A new study from <a href="https://www.osu.edu/">Ohio State University</a> reveals what is going on inside of your <a href="https://www.earth.com/news/gut-brain-interactions-have-an-influence-on-diseases/">brain</a> when you get lost in a fictional fantasy. The experts discovered that the more immersed we become in the lives of our favorite characters of fiction, the more our brain activity reflects how much we identify with them.
&#8220;When they think about a favorite fictional character, it appears similar in one part of the brain as when they are thinking about themselves,&#8221; said study lead author Timothy Broom.
The research was focused on self-described fans of the HBO series &#8220;Game of Thrones.&#8221; The individuals were instructed to think about themselves, nine of their friends, and nine characters from the drama series. The participants also reported on which character they felt closest to and liked the most.
According to Broom, Game of Thrones was ideal for this study because it attracted a devoted fan base and the large cast presented a variety of characters that people could become attached to.
One of the key findings involved participants who scored highest on &#8220;trait identification.&#8221; These individuals agreed most strongly with statements like &#8220;I really get involved in the feelings of the characters in a novel.&#8221;
&#8220;People who are high in trait identification not only get absorbed into a story, they also are really absorbed into a particular character,&#8221; said Broom. &#8220;They report matching the thoughts of the character, they are thinking what the character is thinking, they are feeling what the character is feeling. They are inhabiting the role of that character.&#8221;
The researchers used an fMRI machine to measure activity in various parts of the brain through small changes in blood flow. As the participants&#8217; brains were scanned, they were evaluating themselves, their friends, and Game of Thrones characters. 
A part of the brain called the ventral medial prefrontal cortex (vMPFC) is known to show increased activity when people think about themselves and, to a lesser extent, when they think about close friends.
While in the fMRI, the individuals were shown a series of names &#8211; including themselves, friends, or characters &#8211; along with a trait, such as lonely, sad, trustworthy, or smart. The participants simply said &#8220;yes&#8221; or &#8220;no&#8221; to imply whether the trait fit the person.
As expected, the vMPFC was most active when people were evaluating themselves, less active when they evaluated friends, and least active when they evaluated characters from Game of Thrones.
However, among those who were high in trait identification, the vMPFC was more active when they thought about the fictional characters than it was for participants who identified less with the characters. This region of the brain was particularly active when the individuals evaluated the character they identified with the most.
Study co-author Dylan Wanger said the findings help explain how fiction can have such a big impact on some people.
&#8220;For some people, fiction is a chance to take on new identities, to see worlds though others&#8217; eyes and return from those experiences changed,&#8221; said Wagner.
&#8220;What previous studies have found is that when people experience stories as if they were one of the characters, a connection is made with that character, and the character becomes intwined with the self. In our study, we see evidence of that in their brains.&#8221;
The study is published in the journal <a href="https://academic.oup.com/scan">Social Cognitive and Affective Neuroscience</a>.
&#8211;&#8212;
By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

What happens in your brain while you're lost in fiction

Extreme weather is no longer an occasional event. Drought-fed wildfires in Southern California, a deadly hurricane in the Appalachian Mountains, and devastating floods in New England demonstrate that climate disasters are growing costlier. 



As climate-related damages escalate, governments seek recovery and try to hold fossil fuel companies responsible. Yet legal efforts have stumbled over one issue: proof.



A study published in the journal Nature changes that. It presents a method to scientifically tie specific companies’ emissions to measurable climate damage. This approach could shift how courts handle <a href="https://www.earth.com/news/climate-wins-in-2025-came-from-unexpected-places/" target="_blank" rel="noreferrer noopener">climate</a> liability.



<h2 class="wp-block-heading" id="h-climate-damage-linked-to-specific-companies">Climate damage linked to specific companies</h2>



"Will it ever be possible to sue anyone for damaging the climate?" That question was first raised 20 years ago. Now, researchers say the scientific case is closed.



Using a method called “end-to-end” attribution, scientists link companies’ <a href="https://www.earth.com/news/climate-change-is-now-impacting-earths-rotation/" target="_blank" rel="noreferrer noopener">emissions</a> to specific harms. This approach merges emissions data, peer-reviewed climate models, and economic damage assessments.



"We argue that the scientific case for climate liability is closed, even if the future of these cases remains an open question," said Justin Mankin, the study's senior author from <a href="https://home.dartmouth.edu" target="_blank" rel="noreferrer noopener">Dartmouth College</a>.



"Just over 20 years later, we find the answer to be 'yes.' Our framework can provide robust emissions-based attributions of climate damages at the corporate scale."



<h2 class="wp-block-heading" id="h-estimating-financial-harm">Estimating financial harm</h2>



The research draws on Scope 1 and Scope 3 emissions data. Scope 1 includes direct emissions from a company’s operations. Scope 3 includes emissions from customers using their products.



By integrating this data with climate models, the study estimates the financial harm linked to each company. It compares today’s reality with an alternate world where those <a href="https://www.earth.com/news/earth-day-2025-our-power-our-planet/" target="_blank" rel="noreferrer noopener">emissions</a> never occurred.



"Our findings demonstrate that it is in fact possible to compare the world as it is to a world absent individual emitters," said Christopher Callahan, the study’s first author.



<h2 class="wp-block-heading" id="h-top-companies-may-owe-trillions">Top companies may owe trillions </h2>



From 1991 to 2020, heat-related economic damage from just 111 fossil fuel companies reached $28 trillion. 



Of this, $9 trillion came from the five worst offenders. Chevron, the top investor-owned emitter, may be responsible for losses between $791 billion and $3.6 trillion.



The damages did not fall evenly. The experts pointed out that the tropical regions least culpable for <a href="https://www.earth.com/news/astonishing-global-heat-in-january-2025-defied-climate-expectations/" target="_blank" rel="noreferrer noopener">warming</a> have been disproportionately impacted. These areas contribute the least to emissions but bear the heaviest burden.



<h2 class="wp-block-heading" id="h-legal-potential-of-end-to-end-attribution">Legal potential of end-to-end attribution</h2>



The framework is transparent, flexible, and reproducible. It creates a direct, evidence-based chain from polluter to harm. That clarity could transform litigation.



"We illustrate the trillions in economic losses attributable to the extreme heat caused by <a href="https://www.earth.com/news/wealthier-nations-set-bold-climate-targets-but-citizens-give-less/" target="_blank" rel="noreferrer noopener">emissions</a> from individual companies," noted the researchers.



"The affluence of the Western economy has been based on fossil fuels, but just as a pharmaceutical company would not be absolved from the negative effects of a drug by the benefits of that drug, fossil fuel companies should not be excused for the damage they've caused by the prosperity their products have generated," said Callahan.



<h2 class="wp-block-heading" id="h-using-climate-science-to-target-companies">Using climate science to target companies</h2>



Vermont’s 2024 Climate Superfund Act uses attribution science to assign disaster recovery costs to fossil fuel firms. Mankin contributed testimony, and early versions of this framework influenced the law.



Legal challenges have begun. Opponents argue the state cannot prove which companies caused which damages. But the Nature study directly addresses that gap.



<h2 class="wp-block-heading" id="h-linking-climate-damage-to-companies">Linking climate damage to companies</h2>



Previous climate models focused on general greenhouse gas levels. This study takes a sharper approach by directly simulating each company’s emissions. That allows researchers to trace the exact role each company played in warming.



"Our approach simulates emissions directly, allowing us to trace warming and its repercussions back to specific emitters," said Callahan.



The study highlights heat damage because it’s both measurable and widespread. Earlier work by Mankin and Callahan showed heat waves’ financial toll. Now, they use that foundation to tie losses to corporate behavior.



"Extreme heat is indelibly linked to climate change itself and the losses from it have been an instigator for legal claims," noted Mankin.



<h2 class="wp-block-heading" id="h-accountability-for-climate-damages">Accountability for climate damages</h2>



This study documents what has already happened. "We also live in a world that has warmed considerably over the past 20 years," said Mankin.



"This analysis is not a predictive exercise where we ask what the future holds. Instead, it's a documentary effort where we show what has already happened and provide the reason why."



Science is no longer the obstacle. Climate attribution is now detailed enough to meet legal standards. For communities seeking justice, this could be the beginning of real accountability.



The study is published in the journal <a href="https://www.nature.com/articles/s41586-025-08751-3" target="_blank" rel="noreferrer noopener">Nature</a>.



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Fossil fuel companies linked to specific climate damages

Extreme weather is no longer an occasional event. Drought-fed wildfires...

Antarctica’s winter sea ice usually forms a bright lid over millions of square miles. So when a massive, black patch was spotted by NASA scientists for the first time, satellite operators were taken aback, to say the least.



Then roughly a year later, the situation got even stranger. The gap, called a polynya, swelled to the size of Switzerland and stayed open for weeks.



Only after it refroze did researchers start piecing together how such an enormous opening in the ice could appear hundreds of miles from the nearest shoreline - right above a submerged plateau named Maud Rise.



<h2 class="wp-block-heading" id="h-understanding-polynyas-the-basics">Understanding polynyas - the basics</h2>



<a href="https://www.earth.com/news/carbon-storage-mystery-emerges-in-the-southern-ocean/" target="_blank" rel="noreferrer noopener">The Southern Ocean</a> is normally a layer cake. A thin cap of cold, relatively fresh water floats over saltier, warmer layers, and that slight density difference keeps the column from churning. 



A mid‑ocean polynya needs the cake to collapse. Salt must slip into the surface, make the top layer heavier, and flip the stack. 



Once that happens, convection kicks in, the lid fractures, heat pours skyward, and the ocean “breathes” gases.



Coastal versions manage something similar each year because fierce winds shove ice away from land. Out on the high seas, though, the phenomenon is much less common.



<a href="https://en.wikipedia.org/wiki/Maud_Rise" target="_blank" rel="noreferrer noopener">Maud Rise</a>, a 4,600‑foot‑tall seamount, may provide the missing ingredient by diverting currents and trapping water in tight spirals.



<h2 class="wp-block-heading" id="h-stubborn-patch-over-maud-rise">Stubborn patch over Maud Rise</h2>



History backs that hunch. Between 1974 and 1976, a much larger hole lingered over Maud Rise each winter. 



The Maud Rise polynya was discovered in the 1970s, when remote‑sensing satellites capable of observing <a href="https://www.earth.com/news/rapid-antarctic-sea-ice-loss-is-causing-severe-storms-around-the-world/" target="_blank" rel="noreferrer noopener">sea ice</a> over the Southern Ocean were first launched. 



It persisted through consecutive winters from 1974 to 1976, and oceanographers at the time assumed it would become an annual occurrence. But since the 1970s, it has occurred only sporadically and for brief intervals.



<figure class="wp-block-image aligncenter size-full is-resized"><a href="https://www.earth.com/wp-content/uploads/2025/04/antarctica_sea-ice-hole_Maud-Rise-polynya_switzerland-size_blue-ice_credit-NASA_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/antarctica_sea-ice-hole_Maud-Rise-polynya_switzerland-size_blue-ice_credit-NASA_1s.webp" alt="An arial view of the Maud Rise polynya. Scientists were baffled as to how this formed but now have an explanation. Credit: NASA Earth Observatory" class="wp-image-1966649" style="width:300px;height:auto"/></a><figcaption class="wp-element-caption">An arial view of the Maud Rise polynya. Scientists were baffled as to how this formed but now have an explanation. Click image to enlarge. Credit: NASA Earth Observatory</figcaption></figure>



“2017 was the first time that we've had such a large and long‑lived polynya in the Weddell Sea since the 1970s,” said Aditya Narayanan of the <a href="https://www.southampton.ac.uk/" target="_blank" rel="noreferrer noopener">University of Southampton</a>, lead author of the study in Science Advances. 



He joined colleagues to probe the comeback with robotic floats, tagged elephant seals, and a high‑resolution <a href="https://www.earth.com/news/shrinking-sea-ice-what-record-lows-tell-us-about-the-future/" target="_blank" rel="noreferrer noopener">ocean model</a>.



<h2 class="wp-block-heading" id="h-salt-storms-and-a-hidden-conveyor">Salt, storms, and a hidden conveyor</h2>



During those winters, the clockwise Weddell Gyre sped up. That spin drew a deep layer of warm, salty water nearer the surface, softening ice from below. Yet the meltwater should have freshened the lid and shut down mixing.



"This upwelling helps to explain how the sea ice might melt. But as sea ice melts this leads to a freshening of the surface water, which should in turn put a stop to the mixing," explained Fabien Roquet, a Professor in Physical Oceanography at the <a href="https://www.gu.se/en" target="_blank" rel="noreferrer noopener">University of Gothenburg</a> and co-author of the research. 



"So, another process must be happening for the polynya to persist. There must be an additional input of salt from somewhere."



Roaring extratropical storms supplied part of that punch. Their swirling winds flung sea ice outward and dragged briny water toward Maud Rise. 



Atmospheric rivers - plumes of moist air stretching a thousand miles - added warmth from above, helping strip away stratification.



<h2 class="wp-block-heading" id="h-ekman-transport-as-the-missing-shove">"Ekman transport" as the missing shove</h2>



A final push came from physics first described a century ago. When wind blows across the ocean, Earth’s rotation deflects the surface flow roughly 90 degrees, a process called <a href="https://oceanservice.noaa.gov/education/tutorial_currents/04currents4.html" target="_blank" rel="noreferrer noopener">Ekman transport</a>. 



The model showed this flow steering salt‑laden water onto the northern flank of Maud Rise, exactly where the 2017 hole opened. 



“Ekman transport was the essential missing ingredient that was necessary to increase the balance of salt and sustain the mixing of salt and heat towards the surface water,” said co‑author Alberto Naveira Garabato, also from the University of Southampton.



The storms didn’t just move ice; they herded the right water into the right spot, letting convection roar. By late September, the opening had vented more than twenty times the heat that normally seeps through unbroken ice before finally freezing again.



<h2 class="wp-block-heading" id="h-polynyas-have-a-global-impact">Polynyas have a global impact</h2>



A hole in the <a href="https://www.earth.com/news/southern-ocean-absorbs-more-co2-than-previously-thought/" target="_blank" rel="noreferrer noopener">Southern Ocean</a> sea ice may look local, yet its fingerprints show up far away. 



“The imprint of polynyas can remain in the water for multiple years after they've formed," noted Professor Sarah Gille from University of California San Diego (<a href="https://www.ucsd.edu" target="_blank" rel="noreferrer noopener">UCSD</a>), another co-author of the research



"They can change how water moves around and how currents carry heat toward the continent. The dense waters that form here can spread across the global ocean.” 



Deep convection hauls carbon‑rich water upward, where it can release CO₂, and sends newly formed, oxygen‑rich brine sliding along the seafloor.



<h2 class="wp-block-heading" id="h-what-happens-next">What happens next?</h2>



That heavy brine eventually feeds the global conveyor belt of currents that helps regulate climate. Because the Maud&nbsp;Rise mechanism hinges on a stronger gyre and stormier skies, its future frequency could ride on winds already shifting as the planet warms.



“For the first time since observations began in the 1970s, there's a <a href="https://www.earth.com/news/record-low-antarctic-sea-ice-and-rapid-melting-pace-stuns-climate-scientists/" target="_blank" rel="noreferrer noopener">negative trend in sea ice</a> in the Southern Ocean, which began around 2016. Before then, it had remained somewhat stable," Professor Gille concluded.



The same rise of warm, salty water that primed the 2017 hole now seems to be thinning ice across Antarctica’s fringe.



Scientists will watch the next few winters closely. Whether the polynya returns or not, its story shows that the frozen edge of the world can still spring surprises - and that what happens far south seldom stays there, for the wider planet.



The full study was published in the journal <a href="https://www.science.org/doi/10.1126/sciadv.adj0777" target="_blank" rel="noreferrer noopener">Science Advances</a>.



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Enormous hole the size of Switzerland appeared in the Antarctica sea ice, now we know why

Antarctica’s winter sea ice usually forms a bright lid over...

Long before humans roamed the Australian continent, the land teemed with giants. Towering reptiles, thunderous birds, and hulking marsupials defined a wild and ancient world of sprawling rainforest ecosystems. Among these formidable creatures was&nbsp;Protemnodon, a now-extinct genus of giant kangaroo.



Despite its size - some individuals tipped the scales at 170 kilograms (375 pounds) - it wasn’t a long-range wanderer.



Instead, Protemnodon lived a curiously local life. New research reveals that these megafaunal marsupials stayed close to home, navigating only a small stretch of <a href="https://www.earth.com/news/world-wildlife-day-2025-a-global-call-to-protect-nature/" target="_blank" rel="noreferrer noopener">rainforest</a> terrain. That fateful trait may have doomed them when the land began to dry. 



A study led by Christopher Laurikainen Gaete at the <a href="https://www.uow.edu.au" target="_blank" rel="noreferrer noopener">University of Wollongong</a> uncovers how restricted mobility, climate change, and the loss of rainforest habitats converged to erase these kangaroos from the map.



<h2 class="wp-block-heading" id="h-giant-kangaroos-stayed-close-to-rainforests">Giant kangaroos stayed close to rainforests</h2>



In the animal kingdom, large herbivores tend to move over vast areas to meet their dietary <a href="https://www.earth.com/news/endangered-species-act-faces-its-biggest-legal-shift-in-decades/" target="_blank" rel="noreferrer noopener">needs</a>. Scientists use this trend to predict how extinct animals might have behaved. 



Based on this logic, Protemnodon, with its substantial mass, should have had a home range exceeding 11 square kilometers. The research team, using a regression model anchored in data from living macropods, estimated a predicted home range of 11.6 ± 5.8 km² (4.5 ± 2.2 square miles).



But when they examined fossilized teeth from eight individual Protemnodon collected from the limestone caves of Mt Etna in central Queensland, they found something surprising. The chemical signatures etched into these ancient teeth told a different story. 



Strontium isotopes, which reflect the geology of the area where an animal foraged, revealed the kangaroos fed within a narrow band of territory. Their enamel contained isotopic ratios matching only the local limestone of the Mount Alma Formation.



<h2 class="wp-block-heading" id="h-fossil-teeth-prove-they-lived-locally">Fossil teeth prove they lived locally</h2>



The findings relied on a cutting-edge approach. The researchers conducted strontium isotope analysis using laser ablation mass spectrometry. This technique allowed them to trace where each individual likely lived and ate during enamel formation.



Surprisingly, the vast majority of samples matched strontium levels from the immediate area <a href="https://www.earth.com/news/earth-day-2025-what-were-really-fighting-for/" target="_blank" rel="noreferrer noopener">surrounding</a> the Mt Etna caves.



Only one individual showed signs of a slightly wider movement pattern. This tooth, labeled WIGL8550, held isotope signatures more consistent with nearby formations like Alton Downs Basalt, suggesting a movement of about 1.5 km (0.9 miles) to the east or south.



However, the researchers can’t confirm whether this movement occurred in life or after death. One theory suggests scavengers, such as Thylacoleo carnifex or Sarcophilus, may have dragged the body to the cave after the animal died elsewhere.



In most other specimens, the teeth recorded a remarkably stable pattern. These kangaroos didn’t roam widely. They seemed to live and die within the same small patch of forest.



<h2 class="wp-block-heading" id="h-rainforests-gave-kangaroos-food-and-shelter">Rainforests gave kangaroos food and shelter</h2>



The study explored three main reasons why Protemnodon might have avoided long-distance travel. The first was environmental. 



For over 200,000 years, the Mt Etna region maintained a stable rainforest ecosystem. This lush <a href="https://www.earth.com/news/what-are-the-biggest-drivers-of-biodiversity-loss/" target="_blank" rel="noreferrer noopener">environment</a> offered abundant food and shelter, meaning the kangaroos didn't need to search far for survival.



Second, the species’ feeding habits likely played a role. While modern kangaroos like Macropus are grazers, feeding on grasses across open landscapes, Protemnodon probably browsed. 



Its low-crowned teeth and long forelimbs suggest a diet of leaves, fruits, and soft vegetation, more easily found in dense forest environments. Browsers often have smaller foraging ranges compared to grazers of similar size, and this pattern seems to hold true here.



Third, locomotion appears to have been a limiting factor. Unlike their hopping cousins, Protemnodon may have moved on all fours. Its anatomy - including elongated forelimbs and robust humeri - points toward a quadrupedal gait.



This form of movement, although efficient in forests, restricts the speed and distance an animal can cover. Without the ability to hop long distances, these kangaroos were naturally more sedentary within rainforests.



<h2 class="wp-block-heading" id="h-rainforests-disappear-so-do-the-giants">Rainforests disappear, so do the giants</h2>



These limited movement patterns became a fatal flaw when the <a href="https://www.earth.com/news/earth-day-honors-success-in-clean-energy-and-wildlife-recovery/" target="_blank" rel="noreferrer noopener">climate</a> began to shift. Around 280,000 years ago, the once-stable rainforest began to decline. Increasing aridity transformed the landscape into dry woodlands. The thick vegetation Protemnodon relied upon began to vanish.



Because these kangaroos were so tightly tied to their habitat, they couldn’t adjust. They couldn’t migrate to find new rainforests. The kangaroos lacked both the physical capability and behavioral tendency to move long distances. In effect, they became stranded in an ecological trap. The resources they needed evaporated around them.



New dating methods, including thermally transferred optically stimulated luminescence (TT-OSL) and uranium-thorium dating, confirmed that these individuals lived between 280,000 and 330,000 years ago. Their extinction coincided with the local collapse of rainforest ecosystems. 



Over time, the rainforest fauna of Mt Etna gave way to animals adapted to dry, open conditions.



<h2 class="wp-block-heading" id="h-new-ideas-about-extinct-species">New ideas about extinct species</h2>



The implications of this research stretch beyond a single species, challenging the assumption that body size alone predicts home range in extinct animals.



Instead, the study suggests that environment, diet, and movement style must also be considered. The idea that Australia’s megafauna had flexible ranges similar to African elephants or North American bison may not apply across the board.



“Using data from modern kangaroos, we predicted these giant extinct kangaroos would have much larger home ranges. We were astounded to find that they didn’t move far at all, with ranges mirroring smaller modern kangaroo species,” said Laurikainen Gaete.



“These new isotopic techniques have blown our field wide open. Imagine ancient GPS trackers - we can use the fossils to track individuals and know where they moved, what they ate, who they lived with and how they died. It’s Palaeo Big Brother,” added Dr. Scott Hocknull.



<h2 class="wp-block-heading" id="h-the-fate-of-giant-kangaroos">The fate of giant kangaroos</h2>



The Protemnodon case reveals how extinction can creep up slowly. The kangaroos didn’t die out in a dramatic, singular event - the loss of rainforests sealed their fate. 



Rather, they were slowly cornered by environmental changes they couldn’t outrun. Their highly specialized biology, once perfectly suited to rainforest life, became a burden.



These findings offer a cautionary tale. Species adapted to narrow niches are often the first to go when habitats shrink. For scientists studying extinction, understanding those ancient patterns helps anticipate what modern species might face as climate shifts intensify.



The study is published in the journal <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0319712" target="_blank" rel="noreferrer noopener">PLOS One</a>.



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Giant kangaroos died out when rainforests disappeared

Long before humans roamed the Australian continent, the land teemed...

Scent plays a vital role in how we experience the world. It shapes our memories, emotions, and choices. Fragrance companies spend years perfecting the right blend. But what if artificial intelligence (AI) could do it in minutes?



A team from the <a href="https://www.isct.ac.jp/en" target="_blank" rel="noreferrer noopener">Institute of Science Tokyo</a> has developed an AI model that does just that. The system, named Odor Generative Diffusion (OGDiffusion), uses essential oil data and scent descriptors to create new, ready-to-blend fragrances.



The work signals a shift from traditional perfume artistry to data-guided <a href="https://www.earth.com/news/scent-plays-a-powerful-role-in-choosing-friends/" target="_blank" rel="noreferrer noopener">aroma</a> creation.



<h2 class="wp-block-heading" id="h-ai-overcomes-obstacles-in-scent-design">AI overcomes obstacles in scent design </h2>



In perfumery, food, and household products, <a href="https://www.earth.com/news/scientists-have-recreated-julius-caesars-signature-scent/" target="_blank" rel="noreferrer noopener">scent</a> influences our reactions. Traditionally, only experienced perfumers could design blends. The process involves many trial-and-error steps, often leading to inconsistent results.



OGDiffusion removes this bottleneck. It uses mass spectrometry data from essential oils as a chemical fingerprint. This allows the model to understand and recreate scents without needing chemical knowledge or manual testing.



The innovation lies in its learning method. The model starts with noisy data and learns to clean it up, mapping it to scent labels like "citrus" or "woody." It then builds a scent profile using essential oils and a mathematical method called non-negative least squares.



<h2 class="wp-block-heading" id="h-training-ai-to-create-scents">Training AI to create scents</h2>



Commercial systems like IBM’s Philyra and Firmenich’s Scentmate assist <a href="https://www.earth.com/news/scientists-discover-the-gene-that-gives-a-flower-its-scent/" target="_blank" rel="noreferrer noopener">perfumers</a>. However, they depend on private datasets and still need human input. OGDiffusion is different. It uses open data, works without expert help, and creates blendable recipes using essential oils.



“Our diffusion network uses patterns in mass spectrometry data of essential oils to generate new fragrance profiles in a fully automated, streamlined, and data-driven approach while maintaining high-quality data output. By eliminating human intervention and molecular synthesis from the process, we provide a fast, general, and efficient method for fragrance generation,” explained Nakamoto.



Unlike other AI systems, this model was trained on data from 166 essential oils and 9 common odor descriptors. The training process involved adding controlled noise to the data, then teaching the network to reconstruct the original scent information.



<h2 class="wp-block-heading" id="h-ai-creates-scents-with-precision">AI creates scents with precision </h2>



Creating data-driven scents is one thing. Matching human expectations is another. The researchers performed several sensory tests with human volunteers to validate their work.



In one test, participants had to match AI-generated scents to their correct descriptors. In another, they had to tell apart blends with and without a specific scent label. Both tests showed high accuracy. Volunteers could reliably identify the correct <a href="https://www.earth.com/news/good-mood-sharper-nose-optimistic-dogs-excel-in-scent-detection/" target="_blank" rel="noreferrer noopener">scent</a> or pick the one that matched the descriptor.



A third test asked participants to rank AI-generated scents and real essential oils by strength of a single descriptor. The AI blends consistently ranked higher. This confirmed the system's precision in producing distinct and expected scent profiles.



<h2 class="wp-block-heading" id="h-an-efficient-and-scalable-method">An efficient and scalable method</h2>



“This approach represents a significant advancement in aroma design,” said Nakamoto.



“By automating the generation of mass spectra corresponding to desired odor profiles, the OGDiffusion network offers a more efficient and scalable method for fragrance creation. Moreover, even a novice can create an intended scent to make scented digital contents.”



The OGDiffusion model bridges chemistry and sensory science. It understands how changes in chemical composition affect what we smell. It can even generate multiple variations of the same scent by using different input noise, introducing creative diversity into the process.



<h2 class="wp-block-heading" id="h-aroma-by-algorithm-what-s-next">Aroma by algorithm: What’s next</h2>



The researchers see potential far beyond the lab. OGDiffusion could revolutionize how fragrances are designed in perfumery, flavoring, cosmetics, and even virtual reality. 



Scented digital content is already a reality in experimental spaces. This AI system could make scent design scalable and accessible.



There are limits, though. The current model works with only nine odor descriptors. Adding more would require a larger training set and better data curation. Also, standardizing scent language across datasets remains a hurdle.



Still, the network can expand. It can potentially integrate natural language inputs using embedding tools like fastText. That would allow users to describe a scent in plain words - and get a fragrance back.



<h2 class="wp-block-heading" id="h-ai-can-now-customize-scents">AI can now customize scents </h2>



The model proves that scent creation can be automated, validated, and customized. By using mass spectrometry data as input and blending essential oils as output, OGDiffusion creates a closed loop of design and realization.



The vision is clear: computers not only see and hear - they can now "smell" in a meaningful way. And soon, you might design your own perfume with a few words and clicks. That’s more than a technical win - it’s a sensory revolution.



The study is published in the journal <a href="https://ieeexplore.ieee.org/document/10943150" target="_blank" rel="noreferrer noopener">IEEE Access</a>.



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AI can now create custom fragrances from scent labels

Scent plays a vital role in how we experience the...

Wine is more than a beverage in Italy. It’s a cultural emblem, a historical constant, and an agricultural marvel. From rustic vineyard rows in the hills of Tuscany to sophisticated wine cellars beneath Rome, the Italian wine and grapes story is celebrated.



But few realize that this tale took shape over millennia. The wine we sip today results from thousands of years of patient transformation.



A new study published in the journal PLOS One uncovers this complex history. Led by Mariano Ucchesu from the <a href="https://www.google.com/search?client=safari&amp;rls=en&amp;q=University+of+Montpellier&amp;ie=UTF-8&amp;oe=UTF-8" target="_blank" rel="noreferrer noopener">University of Montpellier</a>, the research team analyzed 1,768 grape seeds from 25 archaeological sites across Italy and San Marino.



These seeds spanned from the Early Neolithic to the Medieval period, covering around 7,000 years. 



Using geometric morphometrics, the team compared ancient seeds to modern wild and cultivated grapes to track their evolution. What emerged was a slow, regionally varied shift from wild <a href="https://www.earth.com/news/eating-grapes-every-day-can-transform-your-muscles/" target="_blank" rel="noreferrer noopener">grape</a> gathering to systematic cultivation and winemaking.



<h2 class="wp-block-heading" id="h-early-italians-used-wild-grapes-for-wine">Early Italians used wild grapes for wine</h2>



The oldest <a href="https://www.earth.com/news/resveratrol-may-boost-female-fertility-naturally/" target="_blank" rel="noreferrer noopener">grape</a> seeds, from the Early Neolithic and Early Bronze Age, show no signs of domestication. Most seeds resembled those of modern wild grapevines, suggesting early communities did not yet cultivate vines. 



Instead, people gathered berries from naturally growing <a href="https://www.earth.com/news/death-of-the-dinosaurs-helped-grapes-conquer-the-world/" target="_blank" rel="noreferrer noopener">plants</a>. These seeds, preserved in waterlogged conditions, remained intact and highly informative.



In these early phases, no domestic-type seed was identified. The study used advanced linear discriminant analysis, trained on a balanced modern reference set, to classify seeds with over 95% accuracy. 



Most pips from La Marmotta (Lazio) and Canàr di San Pietro in Polesine (Veneto) were wild. Even in the Middle Bronze Age, sites across Toscana, Marche, and Emilia Romagna showed only four domestic pips out of 142 examined - a number too small to indicate established cultivation.



This supports a picture of grape use as primarily foraged rather than grown. The absence of consistent domestic traits in northern and central Italy during this period points to a society still reliant on nature’s offerings rather than intentional farming.



<h2 class="wp-block-heading" id="h-turning-point-in-grape-cultivation">Turning point in grape cultivation </h2>



One site, however, told a different story. Sa Osa in Sardinia revealed a turning point. 



By the end of the Late Bronze Age (ca. 1300–1100 BC), nearly half the seeds from this site were domestic in shape and size. This marks the first significant appearance of cultivated grapes in the western Mediterranean.



The domestic seeds from Sa Osa showed a distinct morphology. They were longer and more elongated, with features typical of modern cultivated grapes. 



Paleogenetic analysis revealed that some seeds shared chlorotypes with modern Armenian varieties. This suggests eastern Mediterranean grapevines reached Sardinia through trade or migration.



Several hypotheses exist to explain this. Local communities may have begun their own domestication process. Alternatively, they may have imported fully domesticated plants. 



Or perhaps there was a blend - cultivated grapes from the east mixed with Sardinian wild varieties, creating new hybrids. Evidence of wine residue in Bronze Age Sardinian pottery supports the idea that these grapes were used not just for eating, but for <a href="https://www.earth.com/news/wine-production-in-a-warming-world-the-winners-and-losers/" target="_blank" rel="noreferrer noopener">fermentation</a>.



<h2 class="wp-block-heading" id="h-cultural-exchange-and-early-viticulture">Cultural exchange and early viticulture</h2>



Sardinia’s role in early viticulture may have depended on its strategic location. The island maintained trade connections with the Mycenaeans and Minoans during the Bronze Age. 



These interactions likely carried not only goods but also agricultural knowledge. Techniques for pruning, vine training, and fermentation could have spread westward with sailors and merchants.



“The appearance of the first domesticated grapes during the Bronze Age, in Italian archaeological contexts, points to a long-standing tradition of Italian wine heritage within the broader landscape of Western Europe,” noted the researchers.



At Terramara Santa Rosa di Poviglio in Emilia Romagna, researchers found pollen matching female wild grapevines. This pollen came from flowers with inaperturate grains, a trait of uncultivated plants. 



Its presence suggests people may have been managing or cultivating wild grapevines nearby - an early, experimental form of agriculture.



<h2 class="wp-block-heading" id="h-expansion-of-grape-farming">Expansion of grape farming</h2>



By the 4th century BC, Italy’s grape story had evolved. At Etruscan sites in Emilia Romagna, most seeds were domestic. This shows that true viticulture had taken root. Grape cultivation wasn’t just experimental - it was widespread and sophisticated.



Evidence from Cetamura in Tuscany backs this up. Genetic testing showed links between Etruscan grape seeds and both wild and domestic varieties. Morphometric analysis also aligned these seeds with modern cultivated grapes. 



The Etruscans not only grew grapes but made and traded wine extensively. Their amphorae have been found across France, Spain, and North Africa.



This period marks a major shift in both grape farming and wine culture. Grapes were chosen for specific traits, possibly including flavor, productivity, and resistance. These communities were no longer passive gatherers of fruit. They were actively shaping grape biology and wine traditions.



<h2 class="wp-block-heading" id="h-romans-blended-wild-and-domestic-vines">Romans blended wild and domestic vines</h2>



Viticulture flourished under Roman rule. Between the 1st and 6th centuries AD, archaeological sites show a clear dominance of domestic grape seeds. However, wild seeds did not disappear. In places like Domagnano and Cervia, a significant number of wild or intermediate seeds were found alongside cultivated ones.



This mix points to a deliberate practice. Roman farmers may have cultivated wild vines to create new varieties through introgression. This genetic blending could result in grapes with novel traits—perhaps better suited to different soils or climates.



Interestingly, during Roman times, the difference in shape and size between wild and domestic seeds narrowed. This supports the idea that even wild-looking seeds were cultivated, though not fully transformed. 



Wine was a booming industry, and farmers likely tried every possible way to enhance their yields and flavors.



<h2 class="wp-block-heading" id="h-grapes-and-wine-became-fully-domesticated">Grapes and wine became fully domesticated</h2>



The Medieval period (8th–14th centuries AD) marked a high point in grape domestication. 



Seeds from this era were almost entirely domestic in both shape and size. Sites in Trentino-Alto Adige, Emilia Romagna, and Sardinia all showed this trend.



These seeds closely resembled modern cultivated grapes, suggesting that experimental phases had ended. Farmers had identified and preserved varieties that worked well. Wild vines were no longer widely used. Grape cultivation had become standardized and entrenched in Italian agriculture.



Seed morphology over time supports this. Domestic seeds grew longer and more elongated. Wild seeds, when cultivated, also grew larger than their wild-growing counterparts. But by the Medieval period, the distinction between wild and domestic seeds was wide again, showing that viticulture had settled into a clear direction.



<h2 class="wp-block-heading" id="h-a-legacy-of-patience-and-innovation">A legacy of patience and innovation</h2>



“This research has made it possible, for the first time, to trace the history of the origins of viticulture in Italy,” the authors write. 



“The appearance of the first domesticated grapes during the Bronze Age, in Italian archaeological contexts, points to a long-standing tradition of Italian wine heritage within the broader landscape of Western Europe.”



Supported by the European Union’s Horizon 2020 program and the ANR MICA project, the study shows how cultural exchange, experimentation, and adaptation shaped Italy’s wine landscape. It emphasizes that domestication is not a moment, but a slow evolution.



“This research was made possible thanks to funding received through the European Union’s Horizon 2020 research and innovation program under the Marie Curie Fellowship (2021–2023 n. Agreement-101019563-VITALY) and supported by the ANR MICA project (grant agreement ANR-22-CE27-0026),” noted the study authors. 



”The successful outcome of the research is also due to the valuable collaboration of the archaeobotanical colleagues from CNRS-ISEM in Montpellier and all the Italian colleagues who generously provided the archaeobotanical materials, valuable advice and suggestions for this research.”



<h2 class="wp-block-heading" id="h-italian-grapes-evolved-to-wine">Italian grapes evolved to wine</h2>



The domestication of grapes in Italy was not a single event. It unfolded over thousands of years, shaped by geography, trade, and curiosity. From wild vines gathered by Neolithic foragers to the disciplined vineyards of Medieval monks, the grape’s journey mirrors Italy’s own transformation.



Today, each glass of Italian wine carries that deep past. With every sip, you taste the result of ancient selections, cross-regional exchanges, and countless seasons of change. The story of the Italian grape is, in essence, the story of civilization itself - patient, rooted, and ever evolving.



The study is published in the journal <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0321653" target="_blank" rel="noreferrer noopener">PLOS One</a>.



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How grapes became wine in Italy over 7,000 years

Wine is more than a beverage in Italy. It’s a...

Many people go through upsetting events that leave them stuck with a lingering sense of panic, nightmares, or restlessness. These signs often point toward post-traumatic stress disorder (PTSD), a condition that can damage relationships, block progress at work, and disrupt sleep - though meditation may offer a path toward <a href="https://www.earth.com/news/why-meditation-and-critical-thinking-matter-in-the-age-of-ai/" target="_blank" rel="noreferrer noopener">healing</a>.



After repeated evidence that certain mind-based practices can soothe distressed veterans, college students, and others, experts at <a href="https://www.miu.edu" target="_blank" rel="noreferrer noopener">Maharishi International University</a> have stepped forward to share their findings.



“I’ve served in war zones and seen how PTSD ravages lives long after the battle ends. This research shows transcendental meditation (TM) offers a safe, scalable, and profoundly effective solution - often with results in just a few weeks,” noted Dr. Brian Rees, a co-author of the study and former U.S. Army Medical Corps officer. 



<h2 class="wp-block-heading" id="h-when-the-danger-ends-ptsd-lingers">When the danger ends, PTSD lingers</h2>



Most health professionals recognize that PTSD <a href="https://pubmed.ncbi.nlm.nih.gov/26741477/" target="_blank" rel="noreferrer noopener">starts</a> when people experience or see dangerous events, including assaults, accidents, or other shocks. The brain often stays in a fight-or-flight mode, which can make day-to-day life hard to bear.



<a href="https://www.earth.com/news/meditation-rewires-the-emotional-centers-of-the-brain/" target="_blank" rel="noreferrer noopener">Therapeutic</a> methods commonly rely on talking about past traumas or reliving them under guided conditions. While these approaches can help some people, they may feel unsettling to others who prefer gentler methods.



<h2 class="wp-block-heading" id="h-quick-relief-for-ptsd">Quick relief for PTSD</h2>



The new meta-analysis reviewed 15 separate investigations involving over 1,200 subjects. In each study, <a href="https://www.tm.org/" target="_blank" rel="noreferrer noopener">transcendental meditation</a> led to a noticeable drop in PTSD symptoms faster than inactive comparisons or standard support programs.



“I have 13 years of experience teaching TM in an army hospital to over 300 active-duty soldiers with PTSD and traumatic brain injury issues,” said Dr. Vernon Barnes, an expert in the Georgia Prevention Institute at Augusta University.



”The experience of providers I have worked with is that patients who get TM after therapy recover faster and more completely than those who do not.”



Studies suggest that TM addresses deep-rooted <a href="https://www.earth.com/news/meditation-slows-biological-aging-at-the-molecular-level/" target="_blank" rel="noreferrer noopener">tension</a> without forcing someone to relive disturbing moments.



<h2 class="wp-block-heading" id="h-speed-matters-in-recovery">Speed matters in recovery</h2>



In many of the reviewed studies, results showed up fast - sometimes within days or weeks.



South African college students, for example, experienced a 14-point drop in PTSD symptoms in just two weeks, a change large enough to be clinically significant.



Rapid progress matters because people suffering from PTSD often struggle with motivation, consistency, or even the hope that things can improve. Seeing early success can encourage them to stick with the practice long enough to <a href="https://www.earth.com/news/why-deep-meditation-experiences-feel-timeless-no-past-no-future/" target="_blank" rel="noreferrer noopener">experience</a> more lasting relief.



<h2 class="wp-block-heading" id="h-healing-ptsd-without-reliving-trauma">Healing PTSD without reliving trauma</h2>



Transcendental meditation uses a simple technique of settling into quieter levels of thought for a short period, twice a day.



This can produce calm breathing, lower heart rate, and reduce emotional flare-ups. People of varying backgrounds and ages appear to benefit, whether they’ve witnessed combat, faced severe physical harm, or endured natural catastrophes.&nbsp;



“I saw people burst into tears of <a href="https://www.earth.com/news/mindfulness-meditation-is-a-powerful-weapon-against-chronic-pain/" target="_blank" rel="noreferrer noopener">relief</a> during their very first meditation. One man I taught was so traumatized from war - and then the earthquake - that he did not speak,” said Dr. David Orme-Johnson, professor of psychology at Maharishi International University.



<h2 class="wp-block-heading" id="h-broader-impact-on-health">Broader impact on health</h2>



Long-term <a href="https://pubmed.ncbi.nlm.nih.gov/33334335/" target="_blank" rel="noreferrer noopener">stress</a> can magnify the odds of heart complications, immune system problems, and emotional burnout. By easing tension and jumpiness, transcendental meditation may indirectly help other areas of well-being.



Along with professional counseling, TM adds another tool for those wishing to <a href="https://pubmed.ncbi.nlm.nih.gov/27537781/" target="_blank" rel="noreferrer noopener">reduce dependence on medications</a> or talk-focused therapies. Some clinicians regard it as an additional support to standard treatments, especially when patients feel overwhelmed by repeated trauma recollections.



Research <a href="https://journals.sagepub.com/doi/10.1177/0081246314547124" target="_blank" rel="noreferrer noopener">groups</a> note the need for longer studies that follow participants beyond just a few months. Scientists want to confirm that any relief holds steady over time and across different populations.



They also suggest scaling meditation alongside existing medical care. This may include more training in community centers, hospitals, and universities, where people can maintain regular sessions without financial hurdles.



<h2 class="wp-block-heading" id="h-meditation-could-reshape-ptsd-care">Meditation could reshape PTSD care</h2>



These projects highlight a new option that doesn’t demand rehashing frightening experiences. They point to a technique that goes easy on the nervous system and often produces improvements in less than a month.



Experts believe that future research with bigger volunteer pools will confirm the potential of transcendental meditation as a widely accepted practice. They say that combining it with other counseling methods may make a difference for those whose PTSD has not responded to established approaches.



Transcendental meditation may also reduce the burden on overloaded mental health systems by offering a self-managed option that doesn’t require licensed clinicians for every session. That could make it easier for communities with limited access to therapy to still receive meaningful support.



The study is published in the journal <a href="https://www.mdpi.com/1648-9144/61/4/659" target="_blank" rel="noreferrer noopener">Medicina</a>.



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Meditation can rapidly reduce PTSD without revisiting trauma

Many people go through upsetting events that leave them stuck...

A burst of lightning near the geographic North Pole is stirring anxious questions about our changing climate. It showed up on August of, 2019, when atmospheric conditions lined up in a way few that had ever imagined.



Researchers discovered 342 lightning <a href="https://www.earth.com/news/arctic-meltdown-is-accelerating-global-warming-already-changing-earth-in-unimaginable-ways/" target="_blank" rel="noreferrer noopener">events</a>, with 122 being in a single thunderstorm that traveled over the ice and came within about 27 miles (43 kilometers) of the North Pole.



Jianqiu Zheng and colleagues from the <a href="https://en.ustc.edu.cn" target="_blank" rel="noreferrer noopener">University of Science and Technology of China</a> analyzed the event and found it was tied to an unusual surge of warm air.



<h2 class="wp-block-heading" id="h-arctic-heat-now-fuels-rare-storms">Arctic heat now fuels rare storms</h2>



Temperatures in the far north have been <a href="https://climate.nasa.gov/vital-signs/arctic-sea-ice/" target="_blank" rel="noreferrer noopener">climbing</a> faster than the global average. This shift opens the door for moisture to move into places where it once rarely ventured.



Warm air masses from lower <a href="https://www.earth.com/news/drastic-warming-will-transform-the-arctic-beyond-recognition/" target="_blank" rel="noreferrer noopener">latitudes</a> can now slip into polar regions and create the unstable backdrop for storms. Ice sheets still dominate much of the area, but the air above them is no longer as consistently frigid.



<h2 class="wp-block-heading" id="h-lightning-formed-high-above-north-pole">Lightning formed high above North Pole </h2>



Scientists noted a thundercloud that formed about 1 mile (1.6 kilometers) above the surface of the ice. That formation defied the usual pattern, where storms typically begin closer to ground level.



“This thunderstorm was unlike anything we typically see in the <a href="https://www.earth.com/news/arctic-warming-may-fuel-the-spread-of-diseases-by-unleashing-frozen-viruses/" target="_blank" rel="noreferrer noopener">Arctic</a>,” said Zheng. It developed when a patch of warm, moist air was forced upward by a cooler layer that hugged the ice.



<h2 class="wp-block-heading" id="h-warm-and-cold-air-collided">Warm and cold air collided</h2>



The team attributed this odd weather to a <a href="https://www.weather.gov/lmk/basic-fronts" target="_blank" rel="noreferrer noopener">frontal system</a> that lifted balmy, humid air over a wedge of cold air at the surface. That collision helped launch storm clouds into a zone where lightning is more likely to spark.



The experts relied on ERA5 reanalysis <a href="https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5" target="_blank" rel="noreferrer noopener">data</a> (archived meteorological observations) to piece together how air parcels moved and converged at the time. 



This data offered clues on how two conflicting air masses produced an elevated thundercloud in a zone known for extreme cold.



<h2 class="wp-block-heading" id="h-tracking-lightning-near-the-north-pole">Tracking lightning near the North Pole</h2>



The storm’s path was logged by the World Wide Lightning Location Network (<a href="https://wwlln.net/" target="_blank" rel="noreferrer noopener">WWLLN</a>), a global sensor system that monitors lightning strikes using radio waves. 



This network recorded the closest-known lightning strike to the North Pole, just 27 miles (43 kilometers) away, which helps confirm just how far these unusual storms can reach.



Without systems like WWLLN, events like this could go unnoticed in remote parts of the planet. The ability to track such rare <a href="https://www.earth.com/news/arctic-industrialization-how-will-it-impact-delicate-ecosystems/" target="_blank" rel="noreferrer noopener">phenomena</a> offers scientists a clearer picture of atmospheric behavior in a rapidly warming Arctic.



<h2 class="wp-block-heading" id="h-potential-impact-on-future-forecasts">Potential impact on future forecasts</h2>



“As temperatures rise, we may see more thunderstorms in areas where they were once extremely rare,” said Baohua Ren, a corresponding author of the study who hinted at the ripple effects of higher temperatures..



Shifts in polar climate may force meteorologists to adjust forecasting models. Storm frequency, lightning counts, and general weather patterns could all see new variations.



<h2 class="wp-block-heading" id="h-predicting-what-s-ahead">Predicting what's ahead</h2>



Changes in the <a href="https://www.earth.com/news/the-arctic-may-be-ice-free-sooner-than-we-expected/" target="_blank" rel="noreferrer noopener">Arctic</a> often extend beyond regional boundaries. Variations in sea ice coverage, wind patterns, and ocean currents can trickle down to mid-latitudes and transform familiar seasonal weather.



Some experts wonder whether more frequent lightning in high latitudes might disturb wildlife or disrupt shipping routes.



Elevated storm occurrence might also affect how the upper atmosphere behaves, though more research is needed before making firm predictions.



<h2 class="wp-block-heading" id="h-implications-of-lightning-near-the-north-pole">Implications of lightning near the North Pole </h2>



Lightning isn’t just a flash in the sky, it’s a sign of powerful atmospheric instability. For lightning to occur, there must be strong updrafts and separation of electrical charges within clouds, conditions that are rare in cold, dry regions like the Arctic.



When lightning appears near the North Pole, it signals a major shift in local energy balance. It means the atmosphere had enough moisture, warmth, and motion to support the buildup of charge, which is a clear sign that traditional <a href="https://www.earth.com/news/new-arctic-warming-map-shows-alarming-changes-in-climate-hotspots/" target="_blank" rel="noreferrer noopener">Arctic</a> norms are changing.



A single thunderstorm doesn’t rewrite climate science, but it emphasizes the importance of global temperature trends. <a href="https://acp.copernicus.org/articles/24/4451/2024/" target="_blank" rel="noreferrer noopener">Polar warming events</a> and unexpected weather can align to produce conditions once thought impossible in icy places. 



Scientists see this development as an indication of how quickly the environment can shift. 



<h2 class="wp-block-heading" id="h-extreme-polar-events">Extreme polar events</h2>



Researchers note that more observational campaigns will help explain how moist air triggers lightning near the North Pole. These efforts could improve our ability to understand and track extreme polar weather events.



Polar scientists also emphasize the potential influence on local communities. People who depend on stable ice for hunting or travel might face new hazards when warmer air creates thunderstorms and slushier terrain.



The study was published in <a href="https://link.springer.com/article/10.1007/s00376-024-4141-7" target="_blank" rel="noreferrer noopener">Advances in Atmospheric Sciences</a>.



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Lightning near the North Pole signals major climate shifts

A burst of lightning near the geographic North Pole is...

Alzheimer’s disease and related dementia conditions do not simply rob individuals of memory; they also exact an extraordinary cost on families and on the nation as a whole.



A newly released estimate from researchers at the <a href="https://usc.edu/" target="_blank" rel="noreferrer noopener">University of Southern California</a> (USC) concludes that the total monetary burden of dementia in the United States will reach roughly&nbsp;$781 billion in 2024.



That figure surpasses the annual revenues of many Fortune 500 companies and amounts to more than three percent of the nation’s gross domestic product.



<h2 class="wp-block-heading" id="h-who-pays-and-how-much">Who pays, and how much?</h2>



Although various organizations have attempted to calculate dementia costs in past years, the USC‐led project aims to be the most comprehensive to date. 



The effort, supported by a multi‐year cooperative agreement with the <a href="https://www.nia.nih.gov/">National Institute on Aging</a>, combines detailed medical claims with large, nationally representative surveys and then applies a sophisticated simulation technique known as dynamic microsimulation.



The result is not only a single headline statistic but also a granular picture of who shoulders which costs, how those burdens change as patients age, and how new treatments or policies might shift the outlook over time.



Julie Zissimopoulos co-directs the <a href="https://schaeffer.usc.edu/programs/center-for-health-policy-and-economics/aging-and-cognition/">Aging and Cognition program</a> at the USC Schaeffer Center for Health Policy &amp; Economics and serves as principal investigator of the U.S. Cost of Dementia project. She noted that the goal is to give decision makers the kind of data they need to design smarter interventions.



“Having a better understanding of who bears these costs and how they change over time can inform evidence-based policies that may ultimately reduce the financial impact of dementia,” explained Zissimopoulos.



<h2 class="wp-block-heading" id="h-building-the-dementia-model">Building the dementia model</h2>



The research rests on several interlocking data sets. One is the <a href="https://hrs.isr.umich.edu/about">Health and Retirement Study</a>, a biennial survey of more than 20,000 Americans over age fifty that collects information on income, wealth, health status, and family structure.



Another is de-identified administrative data from the <a href="https://www.cms.gov/">Centers for Medicare &amp; Medicaid Services</a>, which capture hospitalizations, physician visits, prescription drug use, and long-term‐care claims.



By merging these resources and running them through dynamic microsimulation, the team can project how a representative cohort of older Americans will move through different health states, how their care needs will evolve, and how each phase translates into dollars.



The headline number of $781 billion covers several major domains of expense. Direct medical and long-term‐care cost for dementia patients - hospital stays, outpatient visits, skilled nursing facilities, home health aides, and other services - adds up to approximately $232 billion in 2024.



Out-of-pocket payments by patients and their families account for 22% of that sum, or about $52 billion. 



Medicare remains the single largest payer at $106 billion, while Medicaid, which picks up many nursing-home charges for low-income or exhausted‐asset households, spends about $58 billion.



<h2 class="wp-block-heading" id="h-dementia-cost-beyond-medical-bills">Dementia cost beyond medical bills</h2>



Yet medical bills, staggering as they are, represent only the visible part of the iceberg. The USC model attaches a monetary value to <a href="https://www.cms.gov/">quality-of-life</a> losses for both patients and caregivers. 



Economists do this by using survey data on health-related quality of life and applying standard “willingness‐to‐pay” techniques to convert utility losses into dollar terms.



By that yardstick, patients with dementia together lose an estimated $302 billion worth of well-being this year, while family caregivers forfeit an additional $6 billion.



Caregivers also surrender work hours. The model finds that friends and relatives will provide roughly 6.8 billion hours of unpaid care in 2024 - time that could otherwise be spent in the labor force or on personal pursuits. Using average wages to monetize that devotion yields an additional $233 billion. 



<h2 class="wp-block-heading" id="h-enormous-economic-toll">Enormous economic toll </h2>



On top of those unpaid hours are lost wages from people who reduce their schedules or quit altogether to look after loved ones; those forfeited earnings amount to $8.2 billion.



Dana Goldman, founding director of the <a href="https://schaeffer.usc.edu/">USC Schaeffer Institute for Public Policy &amp; Government Service</a> and co-principal investigator on the study, emphasized the stakes. 



“This research demonstrates the enormous toll dementia places on patients, their families, and care partners," she said. "But it also points to the potential value of developing ways to prevent and treat <a href="https://www.earth.com/news/alzheimers-may-not-be-a-brain-disease/">Alzheimer’s</a> and related diseases that cause dementia.” 



Goldman noted that even modest delays in disease progression could yield huge economic dividends, not to mention immeasurable relief for families.



<h2 class="wp-block-heading" id="h-dynamic-dementia-dashboard">Dynamic dementia dashboard</h2>



The study arrives at a moment of rapid change in dementia care. <a href="https://www.fda.gov/">The Food and Drug Administration</a> has recently approved anti-amyloid drugs that, for the first time, appear to slow cognitive decline in certain patients with early-stage Alzheimer’s. 



<a href="https://www.earth.com/news/new-blood-test-can-track-the-progression-of-alzheimers/">Blood-based biomarkers</a> promise cheaper and earlier detection, potentially moving diagnosis up by years.



Policymakers, insurers, and pharmaceutical companies are grappling with how to pay for these innovations and how to ensure equitable access. By updating the cost model annually, the experts hope to provide a real-time dashboard that will let stakeholders see how emerging therapies or policy reforms shift both costs and benefits.



<h2 class="wp-block-heading" id="h-planning-for-dementia-costs">Planning for dementia costs </h2>



Future reports will incorporate additional cost categories - legal fees, home modifications, transportation expenses, and mental-health impacts - aiming for the most exhaustive ledger yet of dementia’s drain on society. 



For now, the $781 billion estimate stands as a stark reminder that the disease is not just a clinical challenge but an economic tsunami, already cresting and bound to grow as the <a href="https://www.earth.com/news/what-25-years-of-research-revealed-about-brain-aging/">aging</a> population swells. 



Evidence-based planning, the researchers argue, is the only way to blunt the tide.



More information about the costs of dementia in the U.S. can be found <a href="https://schaeffer.usc.edu/research/the-cost-of-dementia-in-2025/">here</a>.



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Dementia is a growing global health crisis with a staggering cost

Alzheimer’s disease and related dementia conditions do not simply rob...

The Sun’s newest portrait is not the fiery disc we remember from textbooks. Instead, it sprawls across a mosaic so detailed that you could stack a dozen Earths end to end inside a single pixel and still have room to spare. 



The yellow filaments and bright arcs in this view are bubbles of million-degree plasma caught in magnetic loops that stretch thousands of miles above the surface.



That view comes from the <a href="https://www.esa.int/Science_Exploration/Space_Science/Solar_Orbiter" target="_blank" rel="noreferrer noopener">Solar Orbiter</a> spacecraft, now five years into a planned seven-year tour of duty. 



On March 9, 2025, it aimed its Extreme Ultraviolet Imager at the Sun from about 48 million miles away, gathering 200 separate frames over four and a half hours. 



Technicians stitched those frames into the widest high-resolution ultraviolet image of our star to date - 12,544 pixels on a side.



<h2 class="wp-block-heading" id="h-solar-orbiter-captures-the-sun">Solar Orbiter captures the Sun</h2>



Solar Orbiter left Earth on February 10, 2020, riding an Atlas V rocket. Built by the European Space Agency (<a href="https://www.esa.int" target="_blank" rel="noreferrer noopener">ESA</a>) with key help from NASA, the craft carries ten instruments designed to work as a team, pairing full-disk pictures with on-the-spot particle counts and magnetic-field readings. 



In late 2021, it began routine science operations and has since looped ever closer to the Sun, stealing bits of speed from Venus to tip its orbit for future polar flybys.



The <a href="https://www.esa.int/ESA_Multimedia/Images/2020/01/Solar_Orbiter_s_instruments" target="_blank" rel="noreferrer noopener">Extreme Ultraviolet Imager</a> does its job while the spacecraft bakes in sunlight almost 15 times stronger than what we feel on Earth. 



For the March 9 shoot, mission controllers pointed Solar Orbiter 25 different ways in a 5-by-5 grid. 



At each stop, the camera captured six tight shots and two wider ones at a wavelength of 17.4 nanometers, light invisible to our eyes but perfect for tracing plasma at 1.8 million °F.



The craft sat 11.4 degrees below the solar equator, far enough off-center to reveal the corona’s towering loops yet close enough that every pixel represented roughly 185 miles. 



The finished file measures 12,544 × 12,544 pixels - about 7,505 pixels across the Sun’s 870,000-mile diameter.



<h2 class="wp-block-heading" id="h-zooming-in-on-the-sun-s-surface">Zooming in on the Sun's surface</h2>



During each close approach, Solar Orbiter swoops to within 0.28 astronomical units, roughly 26 million miles from the <a href="https://www.earth.com/news/team-creates-video-showing-the-sun-in-gamma-rays-over-a-14-year-period/" target="_blank" rel="noreferrer noopener">Sun’s surface</a>. 



From that vantage point, the probe can watch bright magnetic knots bubble up, twist, and snap, then match those events to bursts of charged particles that its own detectors sample minutes later. 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2025/04/solar_orbiter_s_widest_high-res_view_of_the_sun/26672644-4-eng-GB/Solar_Orbiter_s_widest_high-res_view_of_the_Sun.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/Sun_Solar-Orbiter_widest-view-yet_ESA_1s.webp" alt="The image you see here combines a whopping 200 individual images into the widest high-resolution view of the Sun yet. Click image to enlarge. Credit: ESA" class="wp-image-1967019"/></a><figcaption class="wp-element-caption">The image you see here combines a whopping 200 individual images into the widest high-resolution view of the Sun yet. Click image to enlarge. Credit: ESA</figcaption></figure>



These coordinated observations help explain how solar storms gain the punch that sometimes knocks out satellites or triggers blackouts on Earth.



<h2 class="wp-block-heading" id="h-solar-orbiter-and-the-poles">Solar Orbiter and the poles</h2>



Each gravity assist at Venus tilts the craft’s path a little higher above the ecliptic. By the end of the decade, the orbit should stand 33 degrees above the solar equator, offering humanity’s first sustained look at the poles.



Early images have already shown magnetic arches plunging back under the surface like the roots of a huge tree - clues to how the <a href="https://www.earth.com/news/the-sun-has-officially-reached-its-solar-maximum-period-in-this-solar-cycle/" target="_blank" rel="noreferrer noopener">11-year sunspot cycle</a> resets itself and why the corona flares so intensely.



<h2 class="wp-block-heading" id="h-why-does-any-of-this-matter">Why does any of this matter?</h2>



Solar weather is no abstract threat. When a blast of energetic particles sweeps past our planet, <a href="https://www.earth.com/news/astronauts-can-survive-mars-space-journey-but-their-kidneys-will-be-permanently-damaged/" target="_blank" rel="noreferrer noopener">astronauts retreat to shielded modules</a>, airlines reroute polar flights, and grid operators brace for geomagnetically induced currents.



By tracing a jet from the Sun’s face to the space around the craft, scientists can now link surface disturbances to the gusts that slam our magnetosphere about two days later. 



Those links sharpen the lead time on solar-storm warnings, buying engineers precious hours to protect hardware.



The March 9 mosaic also hints at smaller, faster events. In March 2023, the mission spotted brief plasma jets - each no wider than Texas - shooting out of tiny sunspots. 



Mapping those jets back to magnetic tangles in the photosphere suggests that even modest disturbances can pump significant heat into the corona, a step toward solving the long-standing mystery of why the outer atmosphere blazes far hotter than the visible surface below.



<h2 class="wp-block-heading" id="h-solar-orbiter-and-the-road-ahead">Solar Orbiter and the road ahead</h2>



Solar Orbiter and NASA’s <a href="https://science.nasa.gov/mission/parker-solar-probe/" target="_blank" rel="noreferrer noopener">Parker Solar Probe</a> already leapfrog one another, one providing panoramic snapshots, the other flying through the very plasma on display. 



As Solar Orbiter climbs toward higher latitudes, those tandem passes will paint the most complete picture yet of our star’s weather engine. 



The next close flyby comes later this year, and every pass brings the craft a little closer - both in miles and in insight - to the forces that light our skies and occasionally rattle our technology.



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Widest high-resolution photo of the Sun ever captured

The Sun’s newest portrait is not the fiery disc we...

Over the past few years, more people across the United States have been experimenting with psilocybin, a hallucinogen found in “magic mushrooms.” 



This increase in psilocybin use has drawn attention from health experts, who note that many users face challenges such as mental illness or chronic pain.



<h2 class="wp-block-heading" id="h-sharp-rise-in-psilocybin-use">Sharp rise in psilocybin use </h2>



Some U.S. states have started softening their policies around the use of psilocybin, which appears to match the timing of its recent surge in popularity. This increase also coincides with a jump in poison center calls, suggesting that not everyone understands the <a href="https://www.earth.com/news/magic-mushrooms-are-the-most-popular-psychedelic-drug/" target="_blank" rel="noreferrer noopener">substance</a> or its risks.



“We found that, since 2019, the number of people using psilocybin has gone up sharply,” said Dr. Karilynn Rockhill, a researcher at the <a href="https://coloradosph.cuanschutz.edu" target="_blank" rel="noreferrer noopener">Colorado School of Public Health</a>. 



Dr. Rockhill led a project that tracked psilocybin use patterns across several age groups and geographic areas.&nbsp;



<h2 class="wp-block-heading" id="h-psilocybin-use-across-all-ages">Psilocybin use across all ages</h2>



Young adults show the largest expansion in psilocybin experimentation. Older adults are not too far behind. 



Looser restrictions and rising social acceptance might encourage some to view psilocybin as a quick fix for depression or anxiety. 



Experts note that certain individuals appear to be self-treating serious conditions. They worry that casual use without medical guidance can create <a href="https://www.earth.com/news/how-psilocybin-mushrooms-got-their-magic/" target="_blank" rel="noreferrer noopener">complications</a>. 



These worries become more pressing when poison center data reveal an uptick in calls from across the age spectrum.



<h2 class="wp-block-heading" id="h-mental-health-and-psilocybin-use">Mental health and psilocybin use</h2>



Psilocybin has drawn attention for potential <a href="https://pubmed.ncbi.nlm.nih.gov/27909165/" target="_blank" rel="noreferrer noopener">benefits</a> in addressing PTSD, substance use disorders, and other challenges. Medical providers, however, warn that its use in these circumstances remains investigational.



People experiencing depression or anxiety sometimes turn to magic mushrooms if they lack immediate professional support.



“Public views on psilocybin are shifting. However, that means we also need to make sure people understand the risks, know how to use it safely if they choose to, and that health care systems are prepared,” said Dr. Joshua Black, a senior scientist at Rocky Mountain Poison and Drug Safety, which is a division of Denver Health.



<h2 class="wp-block-heading" id="h-more-people-are-calling-poison-centers">More people are calling poison centers</h2>



The steep increase in poison center calls, signals that many users do not fully grasp the substance’s <a href="https://www.earth.com/news/confirmed-magic-mushrooms-can-effectively-treat-depression/" target="_blank" rel="noreferrer noopener">effects</a>. Some calls involve disorientation or panic, which can be risky in certain settings.



Others reflect confusion about dosage or harmful interactions with existing prescriptions. Researchers suggest that hospitals and emergency departments might be under-reporting these cases. 



A gap in hospital coding means psilocybin-related visits can slip by unnoticed. That hampers public health agencies that are trying to gauge what’s really happening.



<h2 class="wp-block-heading" id="h-poor-tracking-hides-health-impacts">Poor tracking hides health impacts</h2>



Officials have discovered that current systems for recording hallucinogen-related issues are not keeping up with the changing landscape. Inaccurate data collection may keep local clinics in the dark about how often patients arrive in crisis. 



Health systems need reliable metrics for policy decisions. Some <a href="https://psychedelicalpha.com/data/psychedelic-laws" target="_blank" rel="noreferrer noopener">states</a> have already drafted policies allowing controlled use of psilocybin for medical study.



Others weigh more permissive models. Researchers stress that consistent tracking and standard coding practices can help officials measure any shifts in harm or <a href="https://www.earth.com/news/how-did-magic-mushrooms-evolve-to-contain-psilocybin/" target="_blank" rel="noreferrer noopener">misuse</a>.



<h2 class="wp-block-heading" id="h-education-for-better-outcomes">Education for better outcomes</h2>



Experts call for straightforward educational materials about psilocybin. Too many new users jump in without guidance, and that raises the risk of harmful experiences. 



Medical offices, online platforms, and community centers could play a role in distributing simple facts. A deeper conversation among doctors, public health leaders, and policymakers might also help. 



If people choose to explore psilocybin, they should know its possible <a href="https://www.earth.com/news/mushroom-magic-new-species-discovered-in-africa/" target="_blank" rel="noreferrer noopener">effects</a>. Broad awareness can reduce unintentional injuries and keep poison centers from bearing the brunt of emergencies.



<h2 class="wp-block-heading" id="h-importance-of-responsible-research">Importance of responsible research</h2>



Scientific studies on psilocybin are expanding, driven by interest in its potential therapeutic use. A handful of <a href="https://pubmed.ncbi.nlm.nih.gov/27909164/" target="_blank" rel="noreferrer noopener">clinical trials</a> suggest it can relieve specific mental health symptoms under controlled conditions.



Still, experts advise caution until results are replicated and reviewed. Researchers hope to see more large-scale trials in the near future.



Trials help to confirm safety profiles, determine effective doses, and better understand who could benefit most. Once there is enough valid evidence, health authorities can make informed decisions about approving psilocybin-related therapies.



<h2 class="wp-block-heading" id="h-balancing-hope-and-risks">Balancing hope and risks</h2>



Fans of magic mushrooms highlight experiences of spiritual or introspective growth. Others cite anecdotal relief from depression or chronic pain. 



Medical professionals respond that each user brings a unique history, including mental health factors, that might heighten risks. Some also worry that blanket decriminalization could send the wrong message.



Substance misuse can surface if people jump into using potent compounds without a plan or supervision. Encouraging responsible decisions goes hand in hand with exploring psilocybin’s possible upsides.



<h2 class="wp-block-heading" id="h-the-future-of-psilocybin-safety">The future of psilocybin safety</h2>



A lack of comprehensive tracking tools prevents health facilities from planning for potential surges in psilocybin-related visits. Researchers urge policy revisions that integrate consistent psilocybin coding. Clear codes would allow doctors to pinpoint frequent complications and stock resources accordingly.



Hospitals operating in regions where psilocybin use is on the rise might train staff to handle its distinct side effects. This includes mental health professionals equipped with therapy insights, and emergency teams ready for psychedelic crises.



Supporters of psilocybin believe momentum will continue as studies gain traction and more states debate legalization. Experts will watch these policy shifts in real time.



Community programs or peer education campaigns may help encourage careful exploration of psilocybin rather than spur-of-the-moment decisions.



The study was published in the <a href="https://www.acpjournals.org/doi/10.7326/ANNALS-24-03145" target="_blank" rel="noreferrer noopener">Annals of Internal Medicine</a>.



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Increased use of psilocybin in U.S. raises health concerns

Over the past few years, more people across the United...

Picture Mars - not as the cold, dry and dusty world we see today - but as a temperate place with cloudy skies, rainfall, and rivers that carved valleys into the land. 



This may have been the case billions of years ago, according to a recent study by scientists at the <a href="https://www.colorado.edu/" target="_blank" rel="noreferrer noopener">University of Colorado Boulder</a>. The research suggests that Mars was once a planet shaped by weather cycles. 



"Our study addresses a longstanding mystery about the climate of ancient Mars. Observations of large valley networks suggest formation by flowing water. However, most climate models cannot sustain temperatures above freezing," noted the researchers.



<h2 class="wp-block-heading" id="h-did-rainfall-feed-rivers-on-mars">Did rainfall feed rivers on Mars?</h2>



The experts suggest that the familiar networks of valleys and channels etched across Mars were likely formed not just by melting ice, but by rainfall or snowfall that fed rivers over long periods.



The findings bring new credibility to the idea that <a href="https://www.earth.com/news/hot-water-on-ancient-mars-may-have-been-habitable/" target="_blank" rel="noreferrer noopener">ancient Mars</a> may have been warm and wet, offering a possible explanation for the geological features we still observe from space.



<blockquote class="wp-block-quote">
“You could pull up Google Earth images of places like Utah, zoom out, and you’d see the similarities to Mars,” said Amanda Steckel, who led the study and now works at the California Institute of Technology.
</blockquote>



<h2 class="wp-block-heading" id="h-mystery-of-water-on-mars">Mystery of water on Mars</h2>



Today, most researchers agree that water once existed on the <a href="https://www.earth.com/news/clues-beneath-mars-surface-reveal-possible-habitats-for-ancient-life/" target="_blank" rel="noreferrer noopener">Martian surface</a> - especially during the Noachian epoch, which spanned from about 4.1 to 3.7 billion years ago. But there's been disagreement about how that water got there.



Some believe Mars was always a cold and dry planet, where sunlight barely melted the ice that covered its highlands. Others argue the planet experienced a warmer and wetter climate that allowed for ongoing rainfall or snowmelt.



To test these ideas, the team ran a series of computer simulations to see which conditions could best explain Mars’s ancient valley networks. The simulations were built using landscape modeling software originally designed for Earth studies, and adapted for Mars.



<h2 class="wp-block-heading" id="h-simulations-of-martian-rivers">Simulations of Martian rivers</h2>



The researchers created a digital Mars, mimicking the terrain near the equator where many valley systems are found. They modeled two scenarios: one where the landscape was fed by melting ice caps, and another where water came from falling precipitation.



Over simulated periods ranging from tens of thousands to hundreds of thousands of years, water flowed across the terrain. Each scenario left a distinct mark. 



"We found that the main difference between these scenarios was the location of the origin of the valleys that formed," noted the researchers.



In the melting ice simulation, valleys formed mostly around the edges of where ice would have sat at high elevations. In the precipitation scenario, valley heads emerged across a wide range of elevations - from low basins to areas over 11,000 feet (3,300 meters) high.



<h2 class="wp-block-heading" id="h-rainfall-could-have-helped-valleys-form">Rainfall could have helped valleys form</h2>



<blockquote class="wp-block-quote">
“It’s very hard to make any kind of conclusive statement,” said Steckel. “But we see these valleys beginning at a large range of elevations. It’s hard to explain that with just ice.”
</blockquote>



The results suggest that the precipitation-fed valleys more closely matched the real Martian surface as seen in satellite images captured by NASA’s Mars Global Surveyor and Odyssey missions.



<blockquote class="wp-block-quote">
“<a href="https://www.earth.com/news/wave-ripples-discovered-mars-surface-indicate-liquid-water-present-4-billion-years-ago/" target="_blank" rel="noreferrer noopener">Water</a> from these ice caps starts to form valleys only around a narrow band of elevations,” Steckel said. “Whereas if you have distributed precipitation, you can have valley heads forming everywhere.”
</blockquote>



<h2 class="wp-block-heading" id="h-reading-mars-like-a-history-book">Reading Mars like a history book</h2>



Mars still holds clues to its watery past. Around the equator, images show vast channel networks spreading out from highlands into basins that may once have held lakes - or even oceans.



NASA’s Perseverance rover, which landed in 2021, is now exploring <a href="https://www.earth.com/news/lake-sediments-found-in-jezero-crater-hint-at-past-life-on-mars/" target="_blank" rel="noreferrer noopener">Jezero Crater</a>, a site that scientists believe once contained a lake that was fed by a powerful river.



<blockquote class="wp-block-quote">
“You’d need meters deep of flowing water to deposit those kinds of boulders,” said Brian Hynek, senior author of the study and a scientist at CU Boulder’s Laboratory for Atmospheric and Space Physics.
</blockquote>



To reconstruct this Martian past, Steckel and Hynek used their simulations to trace where these ancient rivers might have started. The results suggest widespread precipitation was more likely responsible for shaping the valleys than occasional ice melt alone.



<h2 class="wp-block-heading" id="h-our-understanding-of-mars-is-evolving">Our understanding of Mars is evolving</h2>



While the study doesn’t fully explain how Mars stayed warm enough to support snow or rainfall, it does add a new piece to the puzzle. The research gives scientists a more detailed view of the planet’s early climate - and may even help us better understand Earth’s own geological past.



<blockquote class="wp-block-quote">
“Once the erosion from flowing water stopped, Mars almost got frozen in time and probably still looks a lot like Earth did 3.5 billion years ago,” Hynek said.
</blockquote>



The <a href="https://www.earth.com/news/mars-captured-in-true-color-like-youve-never-seen-the-red-planet-before/" target="_blank" rel="noreferrer noopener">Red Planet</a> may be dry and desolate now, but its surface still tells stories of a time when water shaped its landscapes. And those stories might bring us closer to understanding both Mars and our own place in the solar system.



The full study was published in the journal <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JE008637" target="_blank" rel="noreferrer noopener">Journal of Geophysical Research Planets</a>.



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Mars’ hidden past: Rainfall may have shaped the ancient landscape

Picture Mars - not as the cold, dry and dusty...

Men and women can both be head-over-heels in love at different stages, yet a new investigation suggests that males might plunge into love’s emotional deep end just a little sooner than females do. Researchers say that while both sexes share the intense emotional highs of romance, each group has its own habits and quirks.



The study was led by Adam Bode, a Ph.D. student at the <a href="https://www.anu.edu.au" target="_blank" rel="noreferrer noopener">Australian National University</a>. He and his colleagues gathered data on early-stage relationships to clarify how biological sex might influence the <a href="https://www.earth.com/news/people-are-falling-in-love-with-ai-companions-and-it-could-be-dangerous/" target="_blank" rel="noreferrer noopener">pattern</a> of falling in love.



<h2 class="wp-block-heading" id="h-men-fall-in-love-faster">Men fall in love faster</h2>



Some scholars <a href="https://royalsocietypublishing.org/doi/10.1098/rstb.2006.1938" target="_blank" rel="noreferrer noopener">argue</a> that humans have long relied on strong mutual <a href="https://www.earth.com/news/where-does-love-live-in-the-brain/" target="_blank" rel="noreferrer noopener">attachments</a> to strengthen relationships and raise families effectively. Love can spark vital changes in behavior, prompting people to prioritize a partner or invest resources in a shared future.



Men’s inclination to leap in quickly may come from a desire to signal commitment and availability. They sense that early displays of fondness can create trust and lower doubts about their intentions.



<h2 class="wp-block-heading" id="h-women-love-deeply-once-they-commit">Women love deeply once they commit</h2>



Females often report deeper <a href="https://www.earth.com/news/why-our-relationships-with-dogs-matter-so-much/" target="_blank" rel="noreferrer noopener">emotional</a> facets when they commit to loving someone. They also seem to think about their beloved more frequently.



“It is the first convincing evidence that women and men differ in some aspects of romantic love,” said Bode. He credits evolutionary processes for shaping these differences, although social and cultural factors may play a role, too.



<h2 class="wp-block-heading" id="h-gender-equality-may-reduce-emotional-intensity">Gender equality may reduce emotional intensity</h2>



“Our study suggests that people from more gender-equal countries experience a lower intensity of romantic love, obsessive thinking, and maybe even commitment,” said Bode. 



That might happen because both men and women in those places face fewer <a href="https://www.earth.com/news/parent-children-relationships-are-key-to-lifelong-well-being/" target="_blank" rel="noreferrer noopener">social</a> pressures that drive them to sink into love’s emotional whirlwind.



Worldwide variations in education, family structures, or relationship norms may mold how each sex behaves. Many <a href="https://repub.eur.nl/pub/16743/Langeslag%202007%20Biological%20Psychology.pdf" target="_blank" rel="noreferrer noopener">specialists</a> believe that the interplay between biology and environment offers the most complete picture of why love unfolds the way it does.



<h2 class="wp-block-heading" id="h-love-s-timing-and-emotional-triggers">Love’s timing and emotional triggers</h2>



Relationship <a href="https://journals.sagepub.com/doi/10.1111/j.0963-7214.2004.00287.x" target="_blank" rel="noreferrer noopener">researchers</a> point out that recognizing slight differences in men’s and women’s early love experiences doesn’t imply any one method of bonding is superior. Instead, these insights underscore the significance of understanding individual romantic triggers.



Scientists continue to explore how hormones, family upbringing, and cultural standards guide the way people fall in love. Researchers predict that future findings will address both interpersonal differences and how outside factors, such as gender equality, can reshape relationship outcomes.



<h2 class="wp-block-heading" id="h-expectations-of-men-and-women">Expectations of men and women</h2>



Friends, family, and therapists often encourage couples to be open and clear about their expectations. This approach might be especially relevant to those who feel like they are fast-tracking an emotional bond.



Some experts have noted that while men might act quickly, that swiftness doesn’t guarantee less intensity down the road. 



Others maintain that once women embrace strong affection, they can become even more focused, devoting time and mental space to cherish their partner.



<h2 class="wp-block-heading" id="h-empathy-makes-it-work">Empathy makes it work</h2>



Healthy relationships may result from understanding these small but fascinating differences. While romantic attachment is unique to each individual, common trends offer suggestions for better communication and empathy.



Love is still influenced by social factors, such as shifting marriage norms or changing personal goals. What remains consistent is the powerful urge to find meaningful closeness, regardless of whether it emerges in a burst of spontaneity or arrives after careful reflection.



<h2 class="wp-block-heading" id="h-different-speeds-help-love-grow">Different speeds help love grow</h2>



Men’s faster declarations of love might be an attempt to show seriousness and lower the possibility of rejection. Women’s strong fixation on their partner could reflect a deeper mental focus that arises once trust and reassurance appear.



Both tendencies hint at love’s core function: to help two people commit enough energy and emotion to build something lasting. This motivation, shaped by biology and steered by <a href="https://www.earth.com/news/social-bonds-drive-learning-in-monkeys-and-humans-alike/" target="_blank" rel="noreferrer noopener">social factors</a>, may let relationships thrive in different cultures and eras.



<h2 class="wp-block-heading" id="h-love-doesn-t-follow-a-fixed-timeline">Love doesn't follow a fixed timeline </h2>



While simple stereotypes about men rushing forward and women hesitating might not capture everyone’s experience, these findings show that each sex can have distinct concerns and benefits. 



Couples can support each other by acknowledging that love doesn’t always follow a fixed timeline.



Staying aware of fast emotional bonds can help partners decide if they’re ready for a milestone, like moving in together or meeting each other’s families. Those who prefer a gentler pace might want to voice that need to avoid feeling overwhelmed.



<h2 class="wp-block-heading" id="h-every-relationship-has-its-own-pace">Every relationship has its own pace</h2>



Communities and health professionals often look for ways to help couples handle potential misalignments in how they experience early-stage romance. Suggesting open dialogue and shared decision-making can avoid misunderstandings about pace and depth.



People who feel they’ve fallen for someone almost overnight may benefit from self-reflection before acting on that emotion. That short gap can avoid conflicts and ensure a steadier foundation.



<h2 class="wp-block-heading" id="h-communication-prevents-mismatched-love">Communication prevents mismatched love</h2>



Men’s rush to say “I love you” might be a spontaneous statement of genuine devotion. At the same time, women’s lingering approach could reflect a thorough emotional check-in.



Ultimately, this study’s results highlight the idea that no two hearts beat exactly alike. Practical advice involves respectful communication, realistic expectations, and empathy for differing emotional speeds.



<h2 class="wp-block-heading" id="h-slow-or-fast-love-needs-trust">Slow or fast, love needs trust</h2>



The quest to understand romance blends biology, anthropology, and psychology. Each discipline adds fresh ideas about how men and women bond and commit their attention.



Couples who celebrate each other’s natural pace or intensity may see improved trust. Small gestures like simple check-ins, thoughtful messages, or shared decisions can support stronger connections.



<h2 class="wp-block-heading" id="h-love-comes-from-culture">Love comes from culture</h2>



This growing body of research has real-world implications for relationship counseling and personal growth. Keeping an open mind about alternate approaches to expressing passion can reduce friction and build more rewarding bonds.



The observations contribute to an ongoing effort by social scientists and mental health practitioners to identify healthy relationship practices.



Knowing that men and women may vary in how they spark or maintain romance can remove confusion and encourage consideration of each partner’s perspective.



The study is published in <a href="https://bsd.biomedcentral.com/articles/10.1186/s13293-025-00698-4" target="_blank" rel="noreferrer noopener">Biology of Sex Differences</a>.



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Men might say 'I love you' first to show they care

Men and women can both be head-over-heels in love at...

Step outside on a warm summer evening, and you’ll likely notice something missing - fewer buzzing bees, fluttering butterflies, or humming beetles. Across the globe, insect numbers are crashing.



These <a href="https://www.earth.com/news/very-little-is-known-about-99-of-all-insects-on-earth/" target="_blank" rel="noreferrer noopener">small creatures</a> may not grab headlines like tigers or elephants, but they play vital roles in pollination, decomposition, and supporting ecosystems. Without them, life on Earth would unravel in quiet but devastating ways.



The concern isn’t new, but recent efforts to grasp the scale and causes of insect decline are painting a clearer, more complex picture. 



A research team at Binghamton University, State University of New York (<a href="https://www.suny.edu" target="_blank" rel="noreferrer noopener">SUNY</a>), has taken a sweeping look at how scientists explain this crisis. Their work doesn’t just identify the usual suspects - it shows a deeply interconnected web of causes, some obvious, many ignored, and all urgent.



<h2 class="wp-block-heading" id="h-insect-are-disappearing-fast">Insect are disappearing fast</h2>



In 2017, a shocking <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0185809" target="_blank" rel="noreferrer noopener">study</a> revealed a 75% drop in insect <a href="https://www.earth.com/news/pests-are-moving-to-cooler-regions-due-to-climate-change/" target="_blank" rel="noreferrer noopener">populations</a> in under 30 years. That single paper stirred a global scientific response, triggering waves of new research.



Scientists began investigating the reasons behind this collapse, with studies emerging across fields from agriculture to climate science.



Despite this burst of attention, understanding the full picture has remained elusive. Many studies focus on specific regions, stressors, or insect groups. 



This fragmented view has made it difficult to see how the various factors combine or overlap. 



<h2 class="wp-block-heading" id="h-linked-causes-of-insect-population-loss">Linked causes of insect population loss</h2>



To capture the breadth of expert opinion, the <a href="https://www.binghamton.edu" target="_blank" rel="noreferrer noopener">Binghamton</a> researchers examined over 175 scientific review papers. These reviews included more than 500 hypotheses about why insects are disappearing. The team read and analyzed them all, building a network of over 3,000 linked ideas.



“It's really hard to talk to everybody about what everyone thinks. And so instead of getting 600 people into a room, we decided to take an approach where we read every paper that's either a review or a meta-analysis,” said Christopher Halsch, a post-doctoral researcher at Binghamton and lead author of the paper.



This network approach allowed them to trace how one cause leads to another. For instance, agriculture may lead to pesticide use, which harms insects. Urban sprawl might increase pollution and fragment habitats. 



Every driver connects to others, forming a dense mesh of stressors that influence insect <a href="https://www.earth.com/news/insect-populations-dramatically-declining-around-the-world-rising-temperatures/" target="_blank" rel="noreferrer noopener">survival</a>.



<h2 class="wp-block-heading" id="h-agriculture-the-dominant-driver">Agriculture: The dominant driver</h2>



When the team looked at which drivers showed up most often, agricultural intensification topped the list. This includes land-use changes, monocultures, and pesticide applications. These practices reduce natural <a href="https://www.earth.com/news/insects-are-uniquely-adapted-to-withstand-harsh-winter-climates/" target="_blank" rel="noreferrer noopener">habitats</a> and expose insects to toxic chemicals.



But Halsch and his colleagues caution against seeing this as a simple ranking. Agricultural practices often interact with other forces, amplifying the damage. 



For example, land cleared for farming may also face climate pressures or pollution. One driver rarely acts alone.



The network map shows that stressors don’t exist in isolation. They create a feedback loop, where one issue triggers another. This interdependence complicates conservation, which often focuses on single threats or single species.



<h2 class="wp-block-heading" id="h-climate-pressures-and-disappearing-insects">Climate pressures and disappearing insects</h2>



Among the other stressors, climate-related changes play a major role. Extreme precipitation, wildfires, rising temperatures, and seasonal shifts all affect insect life cycles, behavior, and habitats. But even within this broad category, complexity reigns.



Each climatic factor may worsen another threat. For example, hotter summers can increase pesticide use, while floods can destroy fragile habitats. These interactions mean that insects face stress from multiple fronts at once.



Despite the importance of these factors, many are still overlooked. The Binghamton study highlights that much of the scientific literature misses critical threats that aren’t easy to quantify or observe.



<h2 class="wp-block-heading" id="h-what-the-literature-misses-entirely">What the literature misses entirely</h2>



Perhaps the most startling finding was what the researchers didn’t find. Entire categories of known threats were nearly absent from the literature. Natural disasters, war zones, railways, and human intrusions - none appeared in any of the reviews examined.



“None of the papers mentioned natural disasters,” said Professor Eliza Grames, who was part of a recent <a href="https://www.binghamton.edu/news/story/5386/20-of-butterflies-in-the-u.s-have-disappeared-since-2000" target="_blank" rel="noreferrer noopener">study</a> showing a 20% loss of butterflies in the United States.



“No papers looked at human intrusions and disturbance, or the effects of war on insects, or railroads.”



These threats are well known in biodiversity discussions. Yet, when it comes to insects, they vanish from view. This raises concerns about research blind spots and missed opportunities to address emerging <a href="https://www.earth.com/news/future-of-farming-insect-waste-reshapes-soil-health/" target="_blank" rel="noreferrer noopener">challenges</a>.



<h2 class="wp-block-heading" id="h-studies-mostly-focus-on-bees-and-butterflies">Studies mostly focus on bees and butterflies</h2>



Another problem is the overwhelming focus on bees and butterflies. These species are loved and easily recognized. They’re also valuable to agriculture, which means they attract research dollars and public support.



“Because people have focused so much on pollinators like bees and butterflies, we are limited in identifying conservation actions that benefit other insects,” said Grames.



This focus creates a loop. “Bees are agriculturally important and people care about them. So there is a lot of research priority towards funding research on bees. So you get this kind of feedback: if you prioritize research on bees, you learn more about bees," said Halsch.



Meanwhile, countless other insects remain poorly understood and unprotected.



<h2 class="wp-block-heading" id="h-towards-a-broader-conservation-vision">Towards a broader conservation vision</h2>



Focusing on well-known species risks missing the bigger picture. The vast majority of insects aren’t pollinators. Many play roles in soil health, pest control, and nutrient cycling. Ignoring them puts entire ecosystems at risk.



“One of the important points we're trying to make in the paper is that conservation actions overly biased towards certain insects or certain stressors will likely be negative for many other insects,” said Halsch. 



“If we focus too much on bees and butterflies and their conservation, we will miss a lot of other species, most of them in fact.”



The way forward, the researchers argue, is to adopt broader, more inclusive strategies. This means managing not just individual drivers, but their connections. It requires recognizing unseen threats and correcting biases in funding and focus.



<h2 class="wp-block-heading" id="h-the-crisis-of-disappearing-insects">The crisis of disappearing insects</h2>



Insects don’t inspire awe like whales or wolves. But their absence would mark the collapse of ecological foundations. This new research urges us to look beyond the familiar, to notice what the data - and our eyes - often miss.



By weaving together 3,000 hypotheses into a single map, the Binghamton team has made one thing clear: insect decline is a many-headed crisis. 



Addressing this issue of disappearing insects will take more than targeted fixes. It will take a shift in how we view the smallest lives on Earth - and how much we’re willing to do to protect them.



The study is published in the journal <a href="https://academic.oup.com/bioscience/advance-article-abstract/doi/10.1093/biosci/biaf034/8115312?redirectedFrom=fulltext" target="_blank" rel="noreferrer noopener">BioScience</a>.



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Insects are still disappearing - and there are hundreds of reasons why

Step outside on a warm summer evening, and you’ll likely...

Chimpanzees,Couple,Sharing,Fruit

In the forested cliffs of Guinea-Bissau’s Cantanhez National Park, a new discovery may be rewriting what we know about the social lives of our primate cousins. A team of researchers, led by scientists from the <a href="https://www.exeter.ac.uk/" target="_blank" rel="noreferrer noopener">University of Exeter</a>, has documented a rare behavior: wild <a href="https://www.earth.com/news/chimpanzees-select-the-best-materials-for-termite-fishing/" target="_blank" rel="noreferrer noopener">chimpanzees</a> eating and sharing fermented fruit that contains alcohol.



The finding, captured using motion-activated cameras, offers intriguing evidence that chimpanzees may not only consume ethanol naturally found in fruits but do so in a way that strengthens their social bonds. This echoes human traditions of sharing <a href="https://www.earth.com/news/drunk-animals-may-explain-humans-love-of-alcohol/" target="_blank" rel="noreferrer noopener">alcohol</a> during communal feasts.



“For humans, we know that drinking alcohol leads to a release of dopamine and endorphins, and resulting feelings of happiness and relaxation,” said lead author Anna Bowland, from the Center for Ecology and Conservation at Exeter’s Penryn Campus in Cornwall.



“We also know that sharing alcohol - including through traditions such as feasting - helps to form and strengthen social bonds. So - now we know that wild chimpanzees are eating and sharing ethanolic fruits - the question is: could they be getting similar benefits?”



<h2 class="wp-block-heading" id="h-chimpanzee-behavior-caught-in-the-act">Chimpanzee behavior: Caught in the act</h2>



The footage showed chimpanzees engaging with large, fibrous African breadfruit that had begun to ferment, naturally developing ethanol levels. Across ten recorded instances, chimps of various ages and sexes were seen actively sharing the fruit, sometimes ignoring larger, unfermented pieces in favor of smaller, fermented ones.



Two adult females, Chip and Até, opted for a ripe, alcoholic piece over a more substantial one. In another case, adult males Mandjambé and Gary approached a breadfruit with aggressive posturing, before Mandjambé laid claim to a piece. Though the initial interactions were tense, others nearby, including Bobby, also joined in and sampled the fruit.



The alcohol content of the fruit, measured at up to 0.61% alcohol by volume (ABV), is relatively low - roughly comparable to a light <a href="https://www.earth.com/news/ancient-humans-were-drinking-beer-in-china-over-10000-years-ago/" target="_blank" rel="noreferrer noopener">beer</a>. But as chimpanzees consume large amounts of fruit daily, the cumulative intake could be significant.



“They can feed on kilograms of the stuff every day. It’s probably analogous to us sipping on a light beer,” said senior author Kimberley Hockings, a lecturer at the University of Exeter.



<h2 class="wp-block-heading" id="h-chimpanzees-sharing-alcoholic-fruit">Chimpanzees sharing alcoholic fruit</h2>



This isn’t the first time scientists have observed chimpanzees consuming alcohol. In 2015, Hockings and her colleagues published research showing that chimps in West Africa had learned to steal palm sap from human containers - sap that had undergone natural <a href="https://www.earth.com/news/brewing-beer-in-space-the-future-of-fermentation/" target="_blank" rel="noreferrer noopener">fermentation</a>. 



Some chimps even appeared tipsy afterward, delaying nest-building and displaying mischievous behavior. However, in the latest observations, there’s no evidence that the chimps reached a level of inebriation. 



The researchers note that becoming visibly drunk would likely impair a wild chimpanzee’s ability to survive, making such behavior evolutionarily disadvantageous. Still, the attraction to fermented fruits raises fascinating questions about cognition, behavior, and the potential benefits of mild alcohol consumption.



“Chimps don’t share food all the time, so this behavior with fermented fruit might be important,” said Hockings.



<h2 class="wp-block-heading" id="h-fruit-feasting-traditions">Fruit feasting traditions</h2>



The study explores the idea that our own traditions of communal eating and drinking may have ancient evolutionary roots. The researchers propose that the behavior seen in chimpanzees today could represent an early form of “feasting.”



“We need to find out more about whether they deliberately seek out ethanolic fruits and how they metabolise it, but this behavior could be the early evolutionary stages of feasting,” Hockings said. “If so, it suggests the human tradition of feasting may have its origins deep in our evolutionary history.”



The notion that humans aren’t alone in their penchant for alcohol isn’t entirely new. Biologists have speculated that <a href="https://www.earth.com/news/early-humans-had-surprising-diets-3-5-million-years-ago/" target="_blank" rel="noreferrer noopener">early humans</a> may have been drawn to fermented fruits both for their energy content and their intoxicating effects.



Recent genetic evidence supports this, revealing a molecular adaptation in the common ancestor of African apes that improved ethanol metabolism. Such adaptations may have allowed ancient species, including humans and chimpanzees, to safely consume small amounts of alcohol as part of their diet.



<h2 class="wp-block-heading" id="h-do-chimpanzees-seek-out-alcoholic-fruit">Do chimpanzees seek out alcoholic fruit?</h2>



Though the dataset is small - just 10 filmed instances - the findings open the door to a new area of primate research. 



Future studies may explore whether chimpanzees intentionally seek out fermented fruits, how their digestive systems process ethanol, and whether such behavior is widespread or localized to specific populations.



Hockings believes that more discoveries may be just around the corner. The number of observations was small but they could lead to an explosion of research into the topic, she argued.



At the very least, the study offers a glimpse into the social dynamics of chimpanzees and the complex behaviors they exhibit - ones that may not be so different from our own. 



Thus, perhaps chimpanzees feasting on alcoholic fruit provide a mirror to the earliest roots of human sociability - bonding over a shared snack and, possibly, a mild buzz.



The study is published in the journal <a href="https://www.cell.com/current-biology/fulltext/S0960-9822(25)00281-7" target="_blank" rel="noreferrer noopener">Current Biology</a>.



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Chimpanzees share alcoholic fruit to increase social bonding

In the forested cliffs of Guinea-Bissau’s Cantanhez National Park, a...

In the forests of Madagascar, few animals command attention quite like lemurs - especially when it comes to questions of social hierarchy. 



In many lemur species, it is the females that rule the roost. They dominate food, take prime spots, and often chase, bite, or hit males who get in their way. 



Yet new evidence shows that this aggressive matriarchy is not universal among lemurs, and the key difference may lie in how their brains deploy a single hormone: oxytocin.



<h2 class="wp-block-heading" id="h-gender-equality-and-oxytocin-receptors">Gender equality and oxytocin receptors </h2>



A new study led by <a href="https://duke.edu/">Duke University</a> takes a close look at seven species in the genus Eulemur. Some of these species, such as the blue‑eyed black lemur, operate under rigid female dominance, while others, like the collared lemur, live in more egalitarian groups.



By mapping oxytocin‑binding sites in the animals’ brains, the researchers discovered an intriguing pattern: lemur societies that are more equitable between the sexes possess a denser network of oxytocin receptors. This is especially true in a brain region that governs fear, anxiety, and aggression.



“It’s more of an even playing field,” said first author Allie Schrock, who completed her PhD in evolutionary anthropology at Duke. Her remark contrasts with blue-eyed black lemurs, where dominant females control males through intimidation and strength.



<h2 class="wp-block-heading" id="h-lemur-queens-rule-the-canopy">Lemur queens rule the canopy</h2>



Dominant females in species like the blue‑eyed black lemur do not confine their aggression to maternal defense or resource scarcity. They wield authority even when circumstances are calm, reinforcing status through spontaneous acts of aggression. 



According to senior author Christine Drea, a professor of evolutionary anthropology at Duke, <a href="https://www.earth.com/news/dopamines-role-in-male-aggression-fades-with-fighting-experience/" target="_blank" rel="noreferrer noopener">aggression</a> in these females is often entirely unprovoked, simply to remind others who’s in charge.



“Males let females have priority access to whatever they want,” Drea said. This arrangement places males perpetually on the defensive, ceding first rights to fruiting trees, coveted shade, or safe resting platforms. 



Though unusual to humans, these social structures are common in lemurs - except for notable deviations in the Eulemur genus.



<h2 class="wp-block-heading" id="h-oxytocin-rewires-lemur-behavior">Oxytocin rewires lemur behavior</h2>



To understand how some Eulemur species shed female domination for gender parity, the team turned to preserved brain tissue housed at the <a href="https://lemur.duke.edu/" target="_blank" rel="noreferrer noopener">Duke Lemur Center</a>. These samples came from naturally deceased, flash-frozen lemurs - a vital resource given Madagascar’s endangered primates.



Using autoradiography, a high‑resolution imaging method, the researchers traced where oxytocin molecules could bind throughout the brain. Oxytocin, popularly dubbed the “love hormone,” is well known for its role in mammalian bonding, trust, and social recognition.



The surprising discovery was that egalitarian lemurs had significantly more oxytocin receptors than their female‑dominated cousins. The density spike was most pronounced in the amygdala, a neural hub for emotion regulation.



This pattern suggests that animals with more oxytocin “targets” in emotional centers may experience a dampening of aggression across both sexes, creating conditions favorable to equal status. Rather than males meeting female hostility blow‑for‑blow, the entire group becomes somewhat less confrontational.



For Drea, the data indicate that egalitarian species achieved gender parity by becoming less aggressive towards others overall.



<h2 class="wp-block-heading" id="h-implications-for-human-neuroscience">Implications for human neuroscience</h2>



The study slots neatly into a broader conversation about oxytocin’s influence on lemur social behavior.



In humans, variations in oxytocin signaling have been tied to spectrum disorders such as <a href="https://www.earth.com/news/autism-diagnoses-have-almost-tripled-in-the-us-over-the-past-ten-years/" target="_blank" rel="noreferrer noopener">autism</a>, as well as to patterns of aggression and anxiety. The Duke study shows tiny chemical shifts in receptors can drive major social changes over evolutionary time.



Scientists have already documented an “oxytocin paradox” in which the hormone can foster in‑group bonding but also fuel suspicion or aggression toward outsiders. 



The lemur findings offer a new perspective. When oxytocin receptors increase in brain areas that reduce fear or promote calm, the hormone’s bonding effects may spread more widely. This could help ease social hierarchies rather than intensify them.



<h2 class="wp-block-heading" id="h-a-million-year-experiment">A million‑year experiment</h2>



Genetic evidence indicates that egalitarian Eulemur species diverged from their more dictatorial relatives within the past million years. That is lightning‑fast in evolutionary terms - and hints moderate adjustments in oxytocin pathways may be sufficient to trigger a social overhaul. 



“We have a natural experiment right here,” Schrock said. He added that closely related species provide a powerful test case for linking neurobiology and behavior.



Researchers will study how oxytocin receptors relate to group size, social habits, and the length of pair bonds. “There's a lot more that we can learn from lemurs about how the brain regulates behavior,” Schrock emphasized.



<h2 class="wp-block-heading" id="h-the-story-of-lemur-society">The story of lemur society</h2>



Though lemurs occupy only a sliver of the world’s biodiversity, their social quirks resonate widely. 



Understanding how neurochemical circuitry shapes aggression and <a href="https://www.earth.com/news/bonobos-cooperation-challenges-beliefs-about-human-evolution/" target="_blank" rel="noreferrer noopener">cooperation</a> could inform conservation strategies. It can also improve welfare in captive primates, and even shed light on human behavioral disorders. 



For endangered species, understanding social harmony can aid reintroduction efforts by reducing conflict and improving survival.



In the end, lemurs remind us that social structures - whether matriarchal dominance or egalitarian negotiation - do not exist in a vacuum. They are built on biochemical foundations that evolution can remodel. 



As scientists continue to uncover those hidden mechanisms, the story of lemur society becomes a window into the delicate interplay between brain chemistry, behavior, and the bonds that hold communities together.



The study is published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rsbl.2024.0647">Biology Letters</a>.



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Hormones influence power and peace in lemur society

In the forests of Madagascar, few animals command attention quite...

In a quiet corner of the Ecuadorian Andes, a chorus of frogs has sparked a global conversation about environmental justice. These aren’t just any amphibians from Ecuador - they’re symbols of resistance, biodiversity, and legal innovation.



In a recent paper, researchers from the <a href="https://www.uvm.edu/instituteforagroecology" target="_blank" rel="noreferrer noopener">University of Vermont’s Institute for Agroecology</a> and international collaborators explore how Ecuador’s pioneering constitutional recognition of the Rights of Nature is changing the way we think about law, justice, and the planet.



The study presents Ecuador as a test case for reimagining governance systems in favor of both people and ecosystems.



<h2 class="wp-block-heading" id="h-tiny-amphibians-massive-impact">Tiny amphibians, massive impact</h2>



At the heart of this story is the Resistance Rocket Frog - Rana Cohete Resistencia - named by residents of Intag Valley to embody the united effort to protect their land. Though small and seemingly inconspicuous, these <a href="https://www.earth.com/news/amphibians-are-being-pushed-beyond-their-heat-limits/" target="_blank" rel="noreferrer noopener">endangered</a> amphibians from Ecuador became co-plaintiffs in a landmark lawsuit that halted large-scale mining in their habitat.



Supported by community members, biologists, lawyers, and activists, the frogs helped establish one of the most influential legal precedents in Earth system law.



“Translating the Constitutional Rights of Nature into concrete conservation measures is a powerful tool to prevent species extinction in areas threatened by <a href="https://www.earth.com/news/deep-sea-mining-forms-dust-clouds-that-devastate-marine-life/" target="_blank" rel="noreferrer noopener">mining</a>,” said Andrea Terán, an Ecuadorian biologist and co-author of the study.



“Large-scale mining concessions are concentrated in the Andes and their foothills, overlapping with regions of high amphibian endemism and richness. Therefore, having a mechanism to halt this extractive economic model opens the door to exploring alternative relationships with nature and sustainable economic models that support life in the long term.”



Ecuador’s <a href="https://www.earth.com/news/effective-conservation-efforts-key-to-saving-biodiversity/" target="_blank" rel="noreferrer noopener">biodiversity</a> is staggering: the country ranks ninth among the world’s most biologically rich nations, home to as many as 20,000 plant species, nearly 700 amphibians, and over 450 types of mammals. <a href="https://www.earth.com/news/world-frog-day-addressing-environmental-threats-to-frogs/" target="_blank" rel="noreferrer noopener">Frogs</a>, in particular, are considered critical ecological indicators due to their acute sensitivity to pollutants, making them a powerful symbol of environmental health.



<h2 class="wp-block-heading" id="h-recognition-of-nature-s-rights">Recognition of nature's rights</h2>



In 2008, Ecuador became the first country in the world to constitutionally recognize the Rights of Nature, granting ecosystems the legal right to “exist, persist, maintain and regenerate.” Unlike traditional environmental laws, which regulate harm through permits and limits, Rights of Nature laws treat ecosystems as legal subjects, not objects. 



This shift allows non-human life to be represented in court as plaintiffs. In the Llurimagua mining case, legal teams successfully argued on behalf of the forest ecosystem and the species within it, using Ecuador’s constitutional protections.



“In the case of Llurimagua, as explained in the article, the practical applicability of the rights of Nature is demonstrated, showing that these are not merely symbolic declarations but rights with real-world legal effects,” said Mario Moncayo, one of the attorneys on the case.



“The recognition of the rights of nature has allowed individuals and communities to exercise them directly, establishing relevant precedents in the protection of nature.” The legal precedent set by these victories has inspired environmental <a href="https://www.earth.com/news/public-health-and-environmental-justice-the-push-for-electric-trucks-in-cities/" target="_blank" rel="noreferrer noopener">justice</a> advocates around the world.



According to Carlos Varela Arias, a constitutional law professor and co-author of the paper, this framework will enable the design of new strategies and global governance mechanisms to adapt human systems to those of nature, allowing for our survival and peaceful coexistence with the natural environment.



<h2 class="wp-block-heading" id="h-a-global-standard-for-nature-s-rights">A global standard for nature's rights?</h2>



The Ecuadorian model is already echoing beyond its borders. Bolivia’s Mother Earth Law, New Zealand’s legal personhood for the Whanganui River and Te Urewera, and Canada’s recognition of First Nations’ land rights all draw on similar legal reasoning.



Cases in Mexico, India, Chile, Argentina, Brazil, and the United States reflect the growing influence of this movement. To institutionalize these advances, the paper outlines three fundamental dimensions of effective Rights of Nature legislation:



<ol start="1" class="wp-block-list">
<li>Intrinsic worth: recognizing nature’s value independent of human utility.</li>



<li>Guiding principle: using Nature’s rights to steer legal and political decisions.</li>



<li>Enforceability: holding states and citizens legally accountable for harm.</li>
</ol>



The authors also identify the Escazú Agreement - a legally binding treaty signed by 23 Latin American countries including Ecuador. The treaty acts as a promising regional tool to reinforce these rights and protect environmental defenders. 



Despite its ratification in 2021, threats to activists remain dire. According to <a href="https://globalwitness.org/en/" target="_blank" rel="noreferrer noopener">Global Witness</a>, over 2,100 nature defenders have been murdered globally in recent years, with 70% of those killings occurring in just four Latin American countries.



<h2 class="wp-block-heading" id="h-legal-innovation-and-indigenous-wisdom">Legal innovation and Indigenous wisdom</h2>



“The Rights of Nature is a strong and inspiring idea that started in Ecuador,” said Amaya Carrasco Torrontegui, senior author of the paper and a University of Vermont affiliate. “This approach encourages us to see Nature not just as a resource, but as something alive and deserving of care - drawing on Indigenous wisdom and the idea of Pachamama, or Mother Earth.”



Lead author Carlos Andres Gallegos-Riofrío emphasized the transformative potential of these legal frameworks. “A key lesson - especially the coalition that advanced the Llurimagua case - is that there are real alternatives for governing the <a href="https://www.earth.com/news/earth-systems-critical-all-life-on-verge-total-collapse-paris-agreement/" target="_blank" rel="noreferrer noopener">Earth system</a>." 



"These alternatives, to become truly transformative, need society’s active engagement. Only then can they serve as critical tools to help local communities stop activities that harm both people and Nature, globally preventing us from continuing to cross the planet’s safe operating boundaries.”



<h2 class="wp-block-heading" id="h-lessons-from-the-andes"><a></a>Lessons from the Andes</h2>



The success of Ecuador’s Rights of Nature movement demonstrates the power of local activism, coalition-building, and a bold rethinking of legal norms. It also highlights the potential of a “tiny avatar” - like the rocket frog - to symbolize much larger battles over climate, biodiversity, and justice.



With mining blocked in three major projects in the Intag Valley and courts upholding the rights of ecosystems in multiple landmark cases, Ecuador’s approach is proving that environmental justice doesn’t always start in global halls of power. It can also begin in a small village, a forested valley, or the determined leap of a tiny frog.



The study is published in the journal <a href="https://www.sciencedirect.com/science/article/pii/S2589811625000199?via%3Dihub" target="_blank" rel="noreferrer noopener">Earth System Governance</a>.



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Does Mother Nature have rights? A tiny frog has joined the fight

In a quiet corner of the Ecuadorian Andes, a chorus...

Every plant leaf, eagle feather, and speck of pond scum spell out existence with the same four DNA letters. Ribosomes read that code, snap together twenty familiar amino acids, and pay each cellular bill with the energy token ATP.



That sameness keeps biologists chasing one big puzzle: if the instructions are nearly identical everywhere, who wrote the first edition? 



The answer points to LUCA - the Last Universal Common Ancestor - an organism that sat at the split between Bacteria and <a href="https://www.earth.com/news/when-the-pressure-builds-archaea-go-multicellular/" target="_blank" rel="noreferrer noopener">Archaea</a>.



<h2 class="wp-block-heading" id="h-one-genetic-code-one-single-ancestor">One genetic code, one single ancestor</h2>



Living systems are not fond of coincidence. A single genetic alphabet, the same protein‑making machinery, and a universal energy currency add up to more than luck. 



“The evolutionary history of genes is complicated by their exchange between lineages," explained Dr. Edmund Moody, lead author from the <a href="https://www.bristol.ac.uk/" target="_blank" rel="noreferrer noopener">University of Bristol</a>. His team sifted thousands of genomes to see how far back the shared toolkit stretches.



"We have to use complex <a href="https://www.earth.com/news/ai-model-esm3-creates-new-protein-that-simulates-500-million-years-of-biological-evolution/" target="_blank" rel="noreferrer noopener">evolutionary models</a> to reconcile the evolutionary history of genes with the genealogy of species.” 



By letting the data, rather than strict cutoffs, decide which features belonged to LUCA, the researchers landed on roughly 2,600 genes - about as many as a run‑of‑the‑mill modern bacterium carries. 



Co-author Dr. Tom Williams noted, “One of the real advantages here is applying the gene‑tree species‑tree reconciliation approach to such a diverse dataset representing the primary domains of life, Archaea and Bacteria. This allows us to say with some confidence - and assess that level of confidence - in how LUCA lived.”



<h2 class="wp-block-heading" id="h-luca-s-developmental-toolkit">LUCA's developmental toolkit</h2>



Previous estimates swung from a lean 80‑gene outline to libraries topping 1,500 families. The updated theory paints LUCA as anything but a genetic ghost. 



Inside those 2,600 blueprints are membrane pumps, DNA‑repair crews, and all the ingredients for simple lipids. Better still, the cache includes the <a href="https://en.wikipedia.org/wiki/Wood%E2%80%93Ljungdahl_pathway" target="_blank" rel="noreferrer noopener">Wood–Ljungdahl pathway</a>, a tidy chemical loop that welds carbon dioxide to hydrogen, spits out acetate, and releases usable energy in the process.



Such provisions point to a self‑reliant cell thriving without outside help. That picture challenges older ideas that early life was a stripped‑down passenger riding geology’s coattails toward complexity. 



Instead, LUCA seems to have been capable, adaptable, and ready to try new tricks the moment the planet cooled enough to keep liquid water in place.



<h2 class="wp-block-heading" id="h-chemistry-of-hydrothermal-vents">Chemistry of hydrothermal vents</h2>



Tracking gene changes throughout Earth's history, the study dates LUCA to about 4.2 billion years ago, only a few hundred million years after Earth itself pulled together. 



“We did not expect LUCA to be so old, within just hundreds of millions of years of Earth formation. However, our results fit with modern views on the habitability of early Earth,” said <a href="https://research-information.bris.ac.uk/en/persons/sandra-alvarez-carretero?_gl=1*1vhoh1m*_ga*NzU0MjM5MjI2LjE3NDQ5Mjc5MDk.*_ga_6R8SPL3HLT*MTc0NDkzMTg1Ni4yLjEuMTc0NDkzMTk2Mi42MC4wLjA." target="_blank" rel="noreferrer noopener">Dr. Sandra Álvarez‑Carretero</a>.



Back then, asteroid impacts and belching volcanoes regularly upended the crust. Yet seafloor hydrothermal vents likely offered warm, metal‑rich oases. 



Iron, nickel, and sulfur minerals could have driven the very reactions scripted in LUCA’s genome. 



The Wood–Ljungdahl pathway, still used by some <a href="https://www.earth.com/news/new-type-of-microbes-found-earths-deep-soil-critical-zone/" target="_blank" rel="noreferrer noopener">present‑day microbes</a>, fits neatly into that setting, turning vent chemistry into food and fuel.



<h2 class="wp-block-heading" id="h-luca-s-peace-was-short-lived">LUCA's peace was short-lived</h2>



“Our study showed that LUCA was a complex organism, not too different from modern prokaryotes. What is really interesting is that it clearly possessed an early immune system, showing that even by 4.2 billion years ago, our ancestor was already engaged in an arms race with viruses,” said <a href="https://www.bristol.ac.uk/people/person/Davide-Pisani-27ef6f2a-19b3-4474-b71c-e61f2c8585a4/" target="_blank" rel="noreferrer noopener">Professor Davide Pisani</a>. 



Genes resembling today’s <a href="https://www.earth.com/news/crispr-gene-editing-gets-a-revolutionary-upgrade-with-new-tool/" target="_blank" rel="noreferrer noopener">CRISPR</a> defenses suggest viral predators appeared almost as soon as cells did.



This constant sparring matters. Viral raids can shuffle genes between hosts faster than random mutation alone. 



The pressure to dodge infection forces microbes to innovate, potentially speeding up the invention of new enzymes, pathways, and even entire metabolic lifestyles that later lineages would inherit.



<h2 class="wp-block-heading" id="h-microbes-sharing-space-with-luca">Microbes sharing space with LUCA</h2>



It’s clear that LUCA was exploiting and changing its environment, but it is unlikely to have lived alone. 



"Its waste would have been food for other microbes, like methanogens, that would have helped to create a recycling ecosystem,” observed Tim Lenton from the <a href="https://www.exeter.ac.uk/" target="_blank" rel="noreferrer noopener">University of Exeter</a>. 



In modern hydrothermal vents, acetate‑producers and methane‑makers trade leftovers, smoothing local chemistry and stabilizing energy flows.



Similar give‑and‑take could explain how <a href="https://www.earth.com/news/was-early-earth-a-purple-planet-scientists-say-its-possible/" target="_blank" rel="noreferrer noopener">early Earth</a> cycled carbon and hydrogen long before <a href="https://www.earth.com/news/sounding-the-alarm-microplastics-are-disrupting-photosynthesis-around-the-world/" target="_blank" rel="noreferrer noopener">photosynthesis</a> took the stage. 



By knitting together waste and resource, hydrothermal vent communities may have tempered extreme swings in temperature and acidity, opening fresh niches for the next wave of <a href="https://www.earth.com/news/earths-first-bacteria-used-oxygen-about-one-billion-years-earlier-than-we-thought/" target="_blank" rel="noreferrer noopener">evolutionary experiments</a>.



<h2 class="wp-block-heading" id="h-why-does-luca-matter">Why does LUCA matter?</h2>



“The findings and methods employed in this work will also inform future studies that look in more detail into the subsequent evolution of prokaryotes in light of Earth history, including the lesser‑studied Archaea with their methanogenic representatives,” said Professor Anja Spang, co-author from the Royal Netherlands <a href="https://www.nioz.nl/en" target="_blank" rel="noreferrer noopener">Institute for Sea Research</a>.



<a href="https://www.bristol.ac.uk/people/person/Philip-Donoghue-4fd2d6ef-3986-4566-97e4-7ae7db296525/" target="_blank" rel="noreferrer noopener">Professor Philip Donoghue</a> highlighted the interdisciplinary nature of the work, saying it brought together data and techniques from across multiple fields. 



This collaborative approach, he explained, made it possible to uncover insights into early Earth and the origins of life that no single discipline could have revealed on its own. 



He also pointed out how swiftly ecosystems seem to have taken root on the early planet - an observation that opens the door to the possibility that life might be thriving on other <a href="https://www.earth.com/news/exoplanet-k2-18b-strongest-evidence-yet-of-extraterrestrial-life-discovered-webb/" target="_blank" rel="noreferrer noopener">Earth-like worlds</a> in the universe.



"This suggests that life may be flourishing on Earth‑like biospheres elsewhere in the universe," Donoghue concluded.



<h2 class="wp-block-heading" id="h-what-happens-next">What happens next?</h2>



To sum it all up, each genome pulled from ocean mud or desert crust adds a puzzle piece to LUCA’s portrait. 



As sequencing tech grows faster and cheaper, scientists will keep hunting for ancient gene families, refining the ancestral blueprint, and scoping out early viral fossils hidden in microbial DNA. 



New drilling missions aimed at untouched seafloor vents could reveal communities whose lifestyles echo those first biochemical gambles, tightening links between geology and genetics.



The storyline is still unfolding, but one takeaway already stands firm: life did not tiptoe onto the stage. It sprinted, armed with a full toolkit, ready to spar with viruses, and eager to reshape its surroundings - leaving every organism alive today carrying a hint of that four‑billion‑year‑old spark.



The full study was published in the journal <a href="https://www.nature.com/articles/s41559-024-02461-1" target="_blank" rel="noreferrer noopener">Nature Ecology &amp; Evolution</a>.



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All life on Earth comes from one single ancestor, now we know what it was

Every plant leaf, eagle feather, and speck of pond scum...

Nature lovers worldwide are turning to EarthSnap, the AI-powered identification app that can instantly recognize over 2 million plants, animals, bugs, birds, and more. 



Built by the team behind Earth.com with over 15M monthly visitors, EarthSnap has quickly gained traction among outdoor enthusiasts looking for a smarter, more interactive way to explore and understand the natural world.



<h2 class="wp-block-heading" id="h-celebrate-earth-month-with-earthsnap">Celebrate Earth Month with EarthSnap</h2>



With the official rollout timed for April in celebration of Earth Month, EarthSnap invites users across the globe to reconnect with nature and explore biodiversity like never before. 



As environmental awareness reaches a peak during this globally recognized month, EarthSnap offers a powerful, tech-driven way to engage with the planet and share discoveries with others.



With its advanced AI, EarthSnap allows users to identify species in seconds simply by snapping a photo. 



The app goes beyond just identification - offering an extensive database filled with detailed insights, a search function for learning more about specific species, and an interactive SnapMap where users can explore identified species from around the world. 



<h2 class="wp-block-heading" id="h-a-deeper-connection-with-nature">A deeper connection with nature</h2>



As more people seek deeper connections with nature, EarthSnap has emerged as a must-have tool for hikers, travelers, gardening enthusiasts and anyone curious about nature.



"EarthSnap is redefining how people interact with the world around them," said Eric Ralls, CEO of EarthSnap and Earth.com. 



"With over 15 million visitors to Earth.com each month, we've seen firsthand the growing demand for accessible, AI-driven tools that make nature exploration easier and more engaging. EarthSnap brings that vision to life.”



EarthSnap is more than just an identification app - it’s a global hub for nature lovers. 



The EarthSnappers Community allows users to share their discoveries, engage with fellow outdoor enthusiasts, and contribute to a growing database of species observations. 



Whether it’s a rare orchid spotted on a mountain trail or a never-before-seen bird in a backyard, EarthSnap makes it easy to document and discuss nature with a like-minded community.



<figure class="wp-block-image aligncenter size-full is-resized"><a href="https://www.earthsnap.com" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/EarthSnap_feature-graphic_press-release_V3s.webp" alt="EarthSnap is FREE, download today. Click here." class="wp-image-1966695" style="width:300px;height:auto"/></a><figcaption class="wp-element-caption">EarthSnap is FREE, download today. Click here.</figcaption></figure>



<h2 class="wp-block-heading" id="h-key-features-driving-earthsnap-s-popularity">Key features driving EarthSnap’s popularity</h2>



● AI-Powered Identification: Instantly recognize over 2 million plants and animals by snapping a photo.



● Search &amp; Learn: Look up species by name to access detailed facts and insights.



● Global SnapMap: Explore photos of identified species from users worldwide.



● Personalized Snap Collections: Save and organize nature discoveries in a digital library.



● Cross-Platform Accessibility: Access all saved photos and data on both mobile and desktop.



As Earth Month continues to inspire a global appreciation for the natural world, EarthSnap is providing a timely solution for those eager to deepen their understanding of biodiversity and participate in meaningful environmental engagement.



With AI-powered tools, a vast species database, and an engaged global community, EarthSnap is setting a new standard for how people interact with nature.



EarthSnap is now available for download on <a href="https://apps.apple.com/us/app/plant-animal-id-earthsnap/id1590178460" target="_blank" rel="noreferrer noopener">iOS</a> and <a href="https://play.google.com/store/apps/details?id=com.earthsnap" target="_blank" rel="noreferrer noopener">Android</a>. To learn more, visit <a href="https://earthsnap.com/" target="_blank" rel="noreferrer noopener">EarthSnap’s website</a>.

Nature enthusiasts are flocking to EarthSnap for plant and animal ID

Nature lovers worldwide are turning to EarthSnap, the AI-powered identification...

When a remotely operated vehicle (ROV) named SuBastian dropped into the frigid waters near the South Sandwich Islands on March 9, the scientists watching the video feed expected fascinating footage of deep‑sea life. What they did not anticipate was history.&nbsp;



At roughly 600 meters (1,968 feet) below the surface, the ROV’s cameras recorded a transparent juvenile colossal <a href="https://www.earth.com/news/new-species-of-deep-sea-squid-discovered-that-broods-giant-eggs/" target="_blank" rel="noreferrer noopener">squid</a> (Mesonychoteuthis hamiltoni). This is the first time this legendary species has ever been observed alive in its natural habitat.



<h2 class="wp-block-heading" id="h-a-centennial-surprise">A centennial surprise</h2>



The timing could not have been more fitting: 2024 marks one hundred years since zoologists first described and named the colossal squid, a member of the glass‑squid family Cranchiidae.&nbsp;



After a century of piecing together its existence from beaks found in <a href="https://www.earth.com/news/language-like-patterns-decoded-in-sperm-whale-communication/" target="_blank" rel="noreferrer noopener">sperm‑whale</a> stomachs and the occasional adult cadaver tangled in fishing gear, researchers finally have moving images of a live individual.



“It's exciting to see the first in situ footage of a juvenile colossal and humbling to think that they have no idea that humans exist,” said Kat Bolstad from <a href="https://www.aut.ac.nz/" target="_blank" rel="noreferrer noopener">Auckland University of Technology</a>, one of the experts who verified the find. 



“For 100 years, we have mainly encountered them as prey remains in whale and seabird stomachs and as predators of harvested toothfish.”



<h2 class="wp-block-heading" id="h-colossal-squid-in-every-sense">Colossal squid in every sense</h2>



Even as a youngster, the squid measured nearly 30 centimeters (one foot) long. As adults, these giants are thought to reach seven meters (23 feet) and tip the scales at up to 500 kilograms (1,100 pounds), making them the heaviest invertebrates on Earth.&nbsp;



Yet they remain among the least understood marine animals. Juveniles like the one filmed are nearly transparent; with maturity they darken and lose that ghostly clarity.



Adult colossal squids - possibly exhausted or dying - have occasionally surfaced on fishing lines, but until now none had been witnessed alive in the abyss where they thrive.



<figure class="wp-block-image aligncenter size-full"><a href="https://youtu.be/lzPoG9H8Hlo?si=8us1wTJU1egTZVjn" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/colossal-squid_Mesonychoteuthis-hamiltoni_Schmidt-Ocean-Institute_1s.webp" alt="*Click image to launch the video.* This is the first confirmed live observation of the colossal squid, Mesonychoteuthis hamiltoni, in its natural habitat. The team on Schmidt Ocean Institute’s Research Vessel Falkor (too) captured footage of the 30-centimeter-long squid (nearly one foot) at a depth of 600 meters (1968 feet) using their remotely operated vehicle SuBastian during an Ocean Census flagship expedition searching for new marine life. Credit: Schmidt Ocean Institute" class="wp-image-1966667"/></a><figcaption class="wp-element-caption">*Click image to launch the video.* This is the first confirmed live observation of the colossal squid, Mesonychoteuthis hamiltoni, in its natural habitat. The team on Schmidt Ocean Institute’s Research Vessel Falkor (too) captured footage of the 30-centimeter-long squid (nearly one foot) at a depth of 600 meters (1968 feet) using their remotely operated vehicle SuBastian during an Ocean Census flagship expedition searching for new marine life. Credit: Schmidt Ocean Institute *Click image to launch the video.*</figcaption></figure>



Dr. Aaron Evans, an independent authority on glass squids, helped confirm the juvenile’s identity. One key clue was a set of hooks located midway along each arm - distinctive hardware that differentiates M. hamiltoni from similar glass‑squid species.&nbsp;



Apart from those arm hooks, juveniles of several glass‑squid lineages can look remarkably alike: clear bodies, large eyes, and a pair of long feeding tentacles sporting sharp terminal hooks.



<h2 class="wp-block-heading" id="h-one-breakthrough-leads-to-another">One breakthrough leads to another</h2>



The March discovery was not the research vessel’s only brush with squid lore. On January 25, during an earlier expedition to the Bellingshausen Sea near Antarctica, Falkor (too) scientists had filmed Galiteuthis glacialis, known as the glacial glass squid, alive and undisturbed for the first time.&nbsp;



That sighting came as the team surveyed the seafloor where a Chicago‑sized <a href="https://www.earth.com/news/new-ecosystem-sea-creatures-never-before-seen-revealed-antarctica-iceberg-breakup/" target="_blank" rel="noreferrer noopener">iceberg</a> had calved from the George VI Ice Shelf. At 687 meters (2,254 feet) down, the transparent squid floated with its arms loose above its head - the so‑called “cockatoo pose” typical of glass squids.



“The first sighting of two different squids on back-to-back expeditions is remarkable and shows how little we have seen of the magnificent inhabitants of the Southern Ocean,” noted <a href="https://schmidtocean.org/" target="_blank" rel="noreferrer noopener">Schmidt Ocean Institute</a>’s executive director Jyotika Virmani.&nbsp;



“Fortunately, we caught enough high‑resolution imagery of these creatures to allow the global experts, who were not on the vessel, to identify both species.”



<h2 class="wp-block-heading" id="h-a-collaborative-voyage-of-discovery">A collaborative voyage of discovery</h2>



Both encounters occurred aboard the Schmidt Ocean Institute’s research vessel Falkor (too), equipped with the ROV SuBastian and supported via satellite telepresence by taxonomists around the world.&nbsp;



The 35‑day cruise that netted the colossal‑squid footage served as the flagship expedition of Ocean Census, the largest global mission to discover marine life.



“It's incredible that we can leverage the power of the taxonomic community through R/V Falkor (too) telepresence while we are out at sea,” said expedition chief scientist Michelle Taylor from the <a href="https://www.essex.ac.uk/" target="_blank" rel="noreferrer noopener">University of Essex</a>.&nbsp;



“The Ocean Census international science network is proud to work together with the Schmidt Ocean Institute to accelerate species discovery and expand our knowledge of ocean life, live online with the world's science community.”



<h2 class="wp-block-heading" id="h-a-growing-catalog-of-firsts">A growing catalog of firsts</h2>



SuBastian has rapidly become one of the world’s premier vehicles for squid discovery. In 2020, it filmed the enigmatic Ram’s Horn Squid (Spirula spirula) alive for the first time. 



In 2024, before the colossal‑squid milestone, it captured another first‑ever video of a deep‑sea squid in the genus Promachoteuthis. A fifth suspected first is currently under expert review.



“These unforgettable moments continue to remind us that the Ocean is brimming with mysteries yet to be solved,” Virmani said.



<h2 class="wp-block-heading" id="h-significance-of-the-colossal-squid-sightings">Significance of the colossal squid sightings</h2>



Beyond the thrill of seeing elusive creatures, such footage provides valuable clues about life histories, behaviors, and ecosystems that were once purely speculative. 



Observing a juvenile colossal squid confirms its depth range and offers hints about its developmental stages. 



Similarly, viewing G. glacialis in the wild helps scientists understand how glass squids position themselves in the water column, interact with predators, and potentially respond to changing ocean conditions.



These findings come at a time when the Southern Ocean is undergoing rapid environmental change. <a href="https://www.earth.com/news/antarcticas-melting-ice-shelves-threaten-global-sea-levels/" target="_blank" rel="noreferrer noopener">Ice‑shelf</a> calving, warming waters, and shifting currents could reshape food webs. Documenting present‑day biodiversity is crucial for detecting future alterations.



<h2 class="wp-block-heading" id="h-upcoming-images-of-deep-sea-life">Upcoming images of deep-sea life</h2>



The researchers now plan to analyze the new video frames for details such as muscle movements, fin strokes, and eye orientation - data points that, when compared with dead specimens, can illuminate how these squids hunt and evade predators.&nbsp;



The experts also hope to revisit the South Sandwich trench system to deploy <a href="https://www.earth.com/news/dna-fishing-helps-scientists-survey-marine-life-in-the-deep-ocean/" target="_blank" rel="noreferrer noopener">environmental DNA</a> (eDNA) samplers that might capture genetic traces from larger, unseen individuals.



For the public, these deep‑sea cameos kindle imagination. Once the stuff of sailor legend, colossal squids are no longer merely mythic giants - they are living animals caught on camera, navigating a twilight realm six football fields beneath the waves.



As technology pushes boundaries, the ocean continues to reveal that its most dramatic stories have yet to be told.



The <a href="https://oceancensus.org/" target="_blank" rel="noreferrer noopener">Ocean Census</a> is a partnership between the Schmidt Ocean Institute, the <a href="https://en.nippon-foundation.or.jp/what/projects/ocean/ocean-census" target="_blank" rel="noreferrer noopener">Nippon Foundation‑Nekton Ocean Census</a>, and GoSouth (a consortium led by the <a href="https://www.plymouth.ac.uk/" target="_blank" rel="noreferrer noopener">University of Plymouth</a>, <a href="https://www.geomar.de/en/" target="_blank" rel="noreferrer noopener">GEOMAR Helmholtz Center for Ocean Research</a>, and the <a href="https://www.bas.ac.uk/" target="_blank" rel="noreferrer noopener">British Antarctic Survey</a>).



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Living baby colossal squid captured on video for the first time ever

When a remotely operated vehicle (ROV) named SuBastian dropped into...

The Endangered Species Act (ESA), long regarded as a cornerstone of U.S. environmental policy, is facing a dramatic reinterpretation. Federal agencies have proposed the removal of habitat changes from the definition of “harm” to endangered and threatened species. 



This move, conservation groups warn, could accelerate extinctions by allowing logging, mining, construction, and other development to proceed unimpeded in sensitive areas.



<h2 class="wp-block-heading" id="h-wildlife-protections-face-a-major-shift">Wildlife protections face a major shift</h2>



Since the ESA was enacted in 1973, regulators and courts have treated the term “harm” broadly. Under the existing framework, an activity that destroys or degrades the <a href="https://www.earth.com/news/satellite-data-could-help-protect-30-of-atlantic-ocean-habitats/">habitat</a> of a listed species can be deemed unlawful even if the action is not intended to kill or harass individual animals.



The <a href="https://www.fws.gov/" target="_blank" rel="noreferrer noopener">U.S. Fish and Wildlife Service</a> (FWS) and the <a href="https://www.fisheries.noaa.gov/" target="_blank" rel="noreferrer noopener">National Marine Fisheries Service</a> (NMFS) now argue in their newly released proposal that habitat loss should not count as “harm” because it differs from the direct targeting of wildlife - referred to in the statute as “take.”



The agencies’ notice, recently made public and slated for official publication in the Federal Register, states that the act’s prohibition on “take” was never meant to cover changes to the landscape. Agency lawyers argue the ESA uses other tools, like critical habitat designations, to protect spaces species depend on.



If that interpretation is finalized, private landowners and industry operators could no longer be held liable under the ESA for <a href="https://www.earth.com/news/global-deforestation-crisis-how-can-we-stop-massive-forest-losses/" target="_blank" rel="noreferrer noopener">clearing forests</a>, draining wetlands, or reshaping shorelines so long as they claim no intention to injure protected animals.



<h2 class="wp-block-heading" id="h-changes-could-have-dire-consequences">Changes could have dire consequences</h2>



The announcement drew swift rebuke from environmental organizations. Noah Greenwald, who directs endangered species work at the <a href="https://www.biologicaldiversity.org/" target="_blank" rel="noreferrer noopener">Center for Biological Diversity</a>, noted that habitat destruction is the biggest cause of extinction.



Greenwald argued that the proposed rule “cuts the heart out of the Endangered Species Act.” It does this by removing a key safeguard that has blocked or modified countless development projects over the past half‑century.



“If (you) say harm doesn't mean significant habitat degradation or modification, then it really leaves endangered species out in the cold."



<h2 class="wp-block-heading" id="h-the-rule-threatens-decades-of-progress">The rule threatens decades of progress</h2>



Greenwald also pointed to two high‑profile examples that currently depend on habitat protections: the northern spotted owl in the Pacific Northwest’s old‑growth forests and the <a href="https://www.earth.com/news/save-the-panther-day-protecting-floridas-big-cats/" target="_blank" rel="noreferrer noopener">Florida panther</a> in the state’s shrinking swamplands. 



Greenwald warned the new policy lets loggers and developers act freely if they claim any wildlife harm was unintentional.



<a href="https://earthjustice.org/" target="_blank" rel="noreferrer noopener">Earthjustice</a> attorney Drew Caputo echoed those concerns. He said the rule “threatens a half‑century of progress in protecting and restoring endangered species,” listing bald eagles, gray wolves, Florida manatees, and <a href="https://www.earth.com/news/humpback-whale-travels-farther-than-any-mammal-ever-recorded/" target="_blank" rel="noreferrer noopener">humpback whales</a> as beneficiaries of the existing interpretation. 



“Destroying a forest, beach, river, or wetland that a species relies on for survival constitutes harm to that species,” he said, citing decades of legal precedent.



<h2 class="wp-block-heading" id="h-supreme-court-s-role-in-the-esa">Supreme Court’s role in the ESA</h2>



The current definition of “harm” has already survived judicial scrutiny at the highest level. In the 1995 case Babbitt v. Sweet Home Chapter of Communities for a Great Oregon, the U.S. Supreme Court upheld the government’s inclusion of habitat modification within the scope of “take.” That decision has guided agency practice ever since.



Patrick Parenteau, an emeritus professor at the <a href="https://www.vermontlaw.edu/" target="_blank" rel="noreferrer noopener">Vermont Law and Graduate School</a> who has argued endangered species cases, noted that reversing course now raises questions of legal consistency. 



Opponents may argue the agencies shouldn't abandon a Supreme Court-backed definition without strong new evidence if they finalize the Endangered Species Act rule.



Because the existing standard has been in place for decades, landowners and federal planners have used it to conserve “many, many millions of acres of land,” according to Parenteau. 



Removing habitat from the definition of “harm” could upend scores of conservation plans negotiated between agencies and private stakeholders.



<h2 class="wp-block-heading" id="h-endangered-species-in-hawaii">Endangered species in Hawaii</h2>



Hawaii may feel the impacts more acutely than anywhere else. Although the islands cover less than one percent of U.S. land area, they host roughly 40 percent of all species listed under the ESA. 



Maxx Philipps, Hawaii and Pacific Islands director for the Center for Biological Diversity, warned that weakening habitat safeguards will accelerate Hawaii’s extinction crisis. 



Philipps also said it will destroy the biological and cultural heritage of the islands, highlighting one example, tiny native bees that pollinate coastal dune plants.



Development has already fragmented the few remaining stretches of shoreline. If development proceeds without habitat review, she said, bees and other shoreline species - including green sea turtles - could see their last refuges disappear. 



“Habitat is life, right?” she asked. “And without it, there is no recovery and without recovery, there is only extinction.”



<h2 class="wp-block-heading" id="h-lawsuits-begin-agencies-remain-silent">Lawsuits begin, agencies remain silent</h2>



The <a href="https://www.doi.gov/" target="_blank" rel="noreferrer noopener">Department of the Interior</a>, which oversees FWS, declined to comment, referring inquiries to the agency. 



Officials also noted that the proposal will soon appear in the Federal Register, opening a 30‑day window for public input.



Environmental advocates are already preparing litigation. Caputo said groups like Earthjustice will challenge the rule if it becomes final, arguing that the administration’s narrow interpretation conflicts with the statute’s language and the Supreme Court’s guidance.



<h2 class="wp-block-heading" id="h-removing-habitat-protections">Removing habitat protections </h2>



Supporters of the rule change - including industry associations representing forestry, mining, and farming - contend that private landowners have shouldered disproportionate burdens under the ESA. They argue penalizing habitat changes hurts development and may prompt landowners to clear areas before species are discovered.



Critics counter that streamlined approvals come at the expense of irreplaceable ecosystems and the species dependent on them.



The debate underscores a broader tension within environmental law: balancing economic opportunity against the preservation of <a href="https://www.earth.com/news/effective-conservation-efforts-key-to-saving-biodiversity/" target="_blank" rel="noreferrer noopener">biodiversity</a>. Though Congress could revise the ESA’s habitat rules, past efforts have failed under both Republican and Democratic control.



As a result, the practical meaning of “harm” often hinges on regulatory interpretation and judicial review.



<h2 class="wp-block-heading" id="h-future-of-the-endangered-species-act">Future of the Endangered Species Act </h2>



If the proposed rule to the Endangered Species Act takes effect after the comment period, it would mark one of the most significant shifts in ESA enforcement in decades. 



Conservation organizations predict a surge of lawsuits aimed at reinstating the broader definition of “harm.” They also worry about immediate on‑the‑ground consequences as businesses test the new limits. 



For researchers and advocates vested in species recovery, the stakes could not be higher: without habitat to return to, plants and animals already on the brink may have no path back from the edge.



As Philipps put it, preserving habitat is the foundation for recovery. The ESA’s future hinges on public comments, agency decisions, and expected legal challenges in the months ahead.



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Endangered Species Act faces its biggest legal shift in decades

The Endangered Species Act (ESA), long regarded as a cornerstone...

An exceptionally well-preserved ant fossil encased in 16-million-year-old Dominican amber is offering scientists surprising new insights into the evolutionary journey of a rare group known as dirt ants, or Basiceros.



The fossilized ant - a previously unknown species named Basiceros enana - is the first of its kind ever uncovered in the Caribbean. The discovery suggests that these elusive <a href="https://www.earth.com/news/how-many-ants-live-on-earth-at-any-point-in-time-total-number-is-astounding/" target="_blank" rel="noreferrer noopener">ants</a> once inhabited the islands before vanishing during the Miocene epoch, which spanned from roughly 23 to 5.3 million years ago.



“Dirt ants are rare finds in the wild. Finding one today is exciting given how well they stay hidden, but captured in amber, it's like finding a diamond,” said Gianpiero Fiorentino, the study’s lead author and a PhD candidate at the <a href="https://www.njit.edu/" target="_blank" rel="noreferrer noopener">New Jersey Institute of Technology</a> (NJIT). “This fossil is singularly distinct from all its modern relatives and reshapes the evolutionary history of Basiceros.”



<h2 class="wp-block-heading" id="h-discovery-of-a-dirt-ant-species">Discovery of a dirt ant species</h2>



Previously, all known members of this ant genus were limited to neotropical rainforests stretching from Costa Rica down to Southern Brazil. Currently, nine living Basiceros species are documented. 



The discovery of B. enana, however, raises new questions about how these ants once dispersed and colonized parts of the Caribbean.



“Often lineages will have what appear to be fairly straightforward biogeographic histories. If you find a group of animals that only live in South America up to Costa Rica today, you really have no reason to expect that their early relatives lived in the Caribbean,” said Phil Barden, senior author of the study and associate professor of biology at NJIT.&nbsp;



“A fossil like this underscores how the distribution of living species can belie the complex evolutionary history of life on our planet.”



<h2 class="wp-block-heading" id="h-tracing-the-dirt-ant-s-ancestry">Tracing the dirt ant's ancestry </h2>



To analyze the ancient ant, the team employed cutting-edge imaging methods, including Micro-CT scanning at NJIT and the <a href="https://www.oist.jp/" target="_blank" rel="noreferrer noopener">Okinawa Institute of Science and Technology Graduate University</a>. These techniques enabled them to reconstruct the fossil in 3D and examine intricate anatomical details otherwise invisible.



“The use of Micro-CT scanning really amplified this study, enabling us to capture features that were virtually impossible to see otherwise,” Fiorentino explained.



The researchers compared these structural features to all known living dirt ant species and used molecular dating methods to trace the species' ancestry. Because amber preserves creatures in three dimensions, the team was able to collect extensive information from the small specimen.



<h2 class="wp-block-heading" id="h-significance-of-the-fossil">Significance of the fossil</h2>



The fossil ant, measuring just 5.13 millimeters in length, is significantly smaller than its modern descendants, which can grow to nearly 9 millimeters. As a result, B. enana now holds the distinction of being the smallest member of its genus ever recorded.



“Our results show that the embiggening of these ants was relatively rapid,” Fiorentino said. “They almost doubled in size in the span of 20 million years." 



"Previous hypotheses suggested that these ants were ancestrally large and shrank over time, so this flips that on its head and really illustrates how important fossils can be to understanding the <a href="https://www.earth.com/news/discovery-evolution-not-random-gene-families-pangenome-influence-called-revolutionary/" target="_blank" rel="noreferrer noopener">evolution</a> of a lineage.”



<h2 class="wp-block-heading" id="h-ancient-camouflage-already-in-play">Ancient camouflage already in play</h2>



Yet despite its smaller size, B. enana already displayed some of the key adaptations that help modern dirt ants remain nearly invisible in their environment - a form of <a href="https://www.earth.com/news/how-squid-power-their-amazing-camouflage-abilities/" target="_blank" rel="noreferrer noopener">camouflage</a> known as crypsis. 



These include two layers of specialized hairs designed to trap dirt and debris: long brush-like setae that lift particles and shorter, tighter hairs that hold them close to the body’s surface.



“What this shows is that playing dead and hiding pays off,” Fiorentino said. “Uncovering a unique fossil like this helps us understand how long organisms may have been employing this strategy, though the presence of these characteristics does not necessarily guarantee they behaved in this way.”



The fossil also shares other recognizable features with today’s dirt ants, such as curved propodeal spines, a distinctive trapezoidal head, and sharp mandibles lined with a dozen triangular teeth - traits suggesting a predatory lifestyle.



<h2 class="wp-block-heading" id="h-a-piece-of-a-larger-puzzle">A piece of a larger puzzle </h2>



Despite these survival advantages, Basiceros ants eventually disappeared from the Caribbean, likely due to dramatic environmental shifts during the Miocene. The team suggests that ancient land bridges might have allowed the ants to migrate from mainland South America to the islands.



“The presence of Basiceros in Dominican amber suggests ancient land bridges may have provided pathways for these ants to traverse from the mainland to the Caribbean,” Barden said. 



“This fossil is a piece of a larger puzzle that will help us understand why some groups of organisms undergo <a href="https://www.earth.com/news/dinosaur-extinction-led-to-the-emergence-of-ant-agriculture/" target="_blank" rel="noreferrer noopener">extinction</a> and others stick it out for millions of years.”



<h2 class="wp-block-heading" id="h-loss-of-ants-in-the-caribbean">Loss of ants in the Caribbean</h2>



Fiorentino noted that the dirt ants' extinction could have come down to a loss of available niches or interspecific competition. 



"These ants are predators, and an overall trend that we see from the Caribbean is a loss of predator ant diversity," said Fiorentino.



“Over a third of ant genera have gone extinct on the island of modern-day Dominican Republic since the formation of Dominican amber. Understanding what has driven this pattern of local extinction is crucial to mitigating modern human-driven extinction and protecting biodiversity."



The study is published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rspb.2024.2171" target="_blank" rel="noreferrer noopener">Proceedings of the Royal Society B</a>.



Image Credit: Gianpiero Fiorentino (NJIT)



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Dirt ants were once masters of disguise in the Caribbean

An exceptionally well-preserved ant fossil encased in 16-million-year-old Dominican amber...

We speak to our dogs constantly - during walks, feeding, play, or even casual chatter. Most of us assume they respond only to tone or gestures, not the actual words, but new research challenges this belief.



A collaborative study from the Universities of <a href="https://www.lincoln.ac.uk" target="_blank" rel="noreferrer noopener">Lincoln</a>, <a href="https://www.sussex.ac.uk" target="_blank" rel="noreferrer noopener">Sussex</a>, and <a href="https://www.univ-st-etienne.fr/en/index.html" target="_blank" rel="noreferrer noopener">Jean Monnet</a> has revealed that dogs can detect meaningful words even in monotone human speech.



The researchers found that <a href="https://www.earth.com/news/national-puppy-day-2025-where-happiness-meets-responsibility/" target="_blank" rel="noreferrer noopener">dogs</a> are not just responding to our cheerful pet voices. They actually “listen in,” parsing out significant phrases from otherwise irrelevant sentences.



This raises fascinating questions about language perception, attention, and the impact of thousands of years of domestication.



<h2 class="wp-block-heading" id="h-dogs-don-t-need-baby-talk-speech">Dogs don’t need baby talk speech</h2>



Humans often use an exaggerated, happy tone when addressing dogs. This is called dog-directed speech (DDS), and it's designed to grab their attention - just like baby talk for infants.



Until now, it was assumed that this exaggerated tone helped dogs identify important words. But are they just reacting to pitch, or do they understand actual language?



The researchers created an experiment to test if <a href="https://www.earth.com/news/are-dogs-replacing-children-how-modern-society-is-changing/" target="_blank" rel="noreferrer noopener">dogs</a> could pick out meaningful content when speech lacked the familiar emotional tone. They used a stream of neutral sentences delivered in flat monotone and inserted familiar phrases like “[Dog’s name], come on then.” 



These phrases were spoken in either DDS or neutral reading prosody (NRP). The goal was to see if dogs could still identify these phrases without emotional clues.



<h2 class="wp-block-heading" id="h-dogs-are-really-good-listeners">Dogs are really good listeners </h2>



The findings were striking. <a href="https://www.earth.com/news/pet-dogs-severely-harm-wildlife-even-when-leashed/" target="_blank" rel="noreferrer noopener">Dogs</a> consistently responded to commands spoken in monotone, ignoring the irrelevant surrounding words. In other words, they weren’t just reacting to tone they were actually parsing the speech for meaning.



"Dogs understand that we say their name to get their attention, and this is almost always paired with a happy 'baby talk' speech register because dogs prefer it," noted Dr. Holly Root-Gutteridge, one of the lead researchers.



"We wanted to see if dogs were only responding to this happy voice or if they could recognize their name, even when it was buried in a sentence and delivered in a flat voice."



"We found that dogs could absolutely find their name when presented in a monotone way and buried in stream of irrelevant speech - a prerequisite for comprehending language - and shows how good they are at listening to us."



<h2 class="wp-block-heading" id="h-dogs-can-focus-on-relevant-speech">Dogs can focus on relevant speech </h2>



This capacity relates to what scientists call the “cocktail party effect” - our ability to focus on a single voice amid background noise.



Humans can pick out meaningful speech in a noisy room. This study shows that <a href="https://www.earth.com/news/lost-in-translation-how-we-misread-our-dogs-emotions/" target="_blank" rel="noreferrer noopener">dogs</a> may have a similar skill. Despite irrelevant noise and monotone delivery, they managed to isolate commands meant for them.



The dogs also performed better when a brief pause preceded the command, suggesting they use subtle structural cues to detect speech boundaries. This resembles how human infants learn to segment words.



<h2 class="wp-block-heading" id="h-emotional-tone-boosts-attention">Emotional tone boosts attention</h2>



To better understand how tone and content influence <a href="https://www.earth.com/news/how-dogs-say-goodbye-before-they-die-these-signs-will-tell-you-if-your-friend-is-leaving-soon/" target="_blank" rel="noreferrer noopener">dogs</a>, the researchers ran two experiments. First, they examined responses to DDS and NRP with and without meaningful content. Then, they tested if dogs reacted differently based on the speaker’s gender.



In the prosody experiment, dogs showed the most attention to DDS with meaningful phrases. But they also responded - though less often - to meaningful words in neutral tone. Surprisingly, they reacted to DDS-control phrases (with no meaning) as much as to NRP-meaningful phrases.



"So, this means that they're listening to us all the time and can pick out their name, but they will pay more attention if you give them both cues. So, 'Sheba, come on then' gets more attention from her if you sound eager to see her," noted Dr. Root-Gutteridge.



<h2 class="wp-block-heading" id="h-dogs-aren-t-just-responding-to-tone">Dogs aren't just responding to tone </h2>



In a follow-up experiment, the researchers explored whether dogs responded differently to male and female owners. While women tend to use more exaggerated DDS, the dogs didn’t show a clear preference. Both male and female speakers prompted similar responses.



"We show that dogs can recognize speech information relevant to them in the absence of the usual prosody we use when we address them," noted Professor David Reby, the project’s lead.



This suggests that the ability to perceive verbal content isn't just a reaction to tone or pitch. It may be tied to something deeper, like neural architecture adapted through domestication.



<h2 class="wp-block-heading" id="h-dogs-break-speech-down">Dogs break speech down</h2>



Dogs may be using a process similar to speech segmentation, long studied in humans. This is the ability to split a continuous flow of sound into distinct, meaningful units. 



Infants learn it early on, using pitch, pauses, and patterns. Dogs seem to possess a version of this ability too.



They respond to repeated phonemes and meaningful words embedded in flat speech. Some even outperformed one-year-old human infants in earlier name-recognition tests. This points to a strong capacity for statistical learning and familiar sound identification.



<h2 class="wp-block-heading" id="h-dogs-understand-speech-content">Dogs understand speech content</h2>



The researchers concluded that while DDS helps grab attention, dogs can still process flat speech. This means our furry friends might understand more than we think - especially when we say something they’ve heard often.



Dogs' attention was highest when meaningful content was paired with DDS. However, they still showed notable responses when only one of these cues was present. So, if you’re giving commands without the usual cheerful tone, your dog might still catch on.



<h2 class="wp-block-heading" id="h-implications-for-other-animals">Implications for other animals</h2>



This study has deep implications. It suggests that dogs aren't just tuned to our emotional expressions - they're truly listening for meaning. 



Future research might explore how well this applies to other species like cats or horses, or whether wild relatives like wolves show similar abilities.



The research team also hopes to study whether voice familiarity strengthens word recognition in dogs. Since human babies benefit from familiar voices, the same might be true for our pets.



<h2 class="wp-block-heading" id="h-a-long-history-of-listening">A long history of listening</h2>



Dogs have evolved alongside humans for over 14,000 years. This deep bond likely shaped their ability to understand us. While we’ve long known they respond to tone, this study proves they’re paying closer attention than we assumed.



Their ability to sift through speech, identify relevant phrases, and respond - regardless of tone - marks a new chapter in human-animal communication.



And next time you think your dog isn’t paying attention because you didn’t use a cheerful voice - think again. They might be listening all along.



The study is published in the journal <a href="https://link.springer.com/article/10.1007/s10071-025-01948-z" target="_blank" rel="noreferrer noopener">Animal Cognition</a>.



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Dogs can understand words even in monotone speech

We speak to our dogs constantly - during walks, feeding,...

In the rugged landscapes of Canada’s Rocky Mountains, researchers have identified a previously unknown butterfly species hiding in plain sight.&nbsp;



Long mistaken for the Half-moon Hairstreak (Satyrium semiluna), the butterflies found in the Blakiston Fan region have now been named Satyrium curiosolus, or the Curiously Isolated Hairstreak.



This discovery reveals the species’ unique evolutionary path, suggesting it has remained cut off from its closest relatives for tens of thousands of years - potentially as long as 40,000 years - slowly evolving into a distinct population both genetically and ecologically.



<h2 class="wp-block-heading" id="h-a-completely-isolated-butterfly-population">A completely isolated butterfly population</h2>



Zac MacDonald, co-first author of the study, is a postdoctoral researcher at <a href="https://www.ioes.ucla.edu/" target="_blank" rel="noreferrer noopener">UCLA’s Institute of the Environment and Sustainability</a>. 



“Our whole-genome sequencing of S. curiosolus revealed strikingly <a href="https://www.earth.com/news/butterflys-rapid-expansion-led-to-lower-genetic-diversity/" target="_blank" rel="noreferrer noopener">low genetic diversity</a> and exceptionally high levels of historical inbreeding compared to the geographically nearest S. semiluna populations in British Columbia and Montana, more than 400 km distant,” said MacDonald.



Despite its small size, the species appears to have persisted independently for millennia. “Like the Channel Island Fox, S. curiosolus may have purged some of its harmful recessive genetic variation through a long, gradual history of inbreeding, allowing it to persist as a small and completely isolated population today,” MacDonald added.



The <a href="https://www.earth.com/news/butterfly-migration-habits-are-not-determined-by-their-dna/" target="_blank" rel="noreferrer noopener">butterfly</a> is not only genetically distinct, but also occupies a unique prairie-grassland habitat, unlike its relatives, which typically reside in sagebrush steppe ecosystems. It has adapted to a different set of environmental conditions, relying exclusively on the silvery lupine (Lupinus argenteus) as its host plant - a species not used by S. semiluna populations in British Columbia.



<h2 class="wp-block-heading" id="h-a-rare-mutualistic-partnership">A rare mutualistic partnership</h2>



In another unexpected twist, the study uncovered a mutualistic bond between S. curiosolus larvae and a specific ant species.&nbsp;



“Furthermore, we recently discovered that S. curiosolus larvae have mutualistic relationships with a particular species of <a href="https://www.earth.com/news/ants-perform-life-saving-amputation-surgeries-on-injured-nest-mates/" target="_blank" rel="noreferrer noopener">ant</a> (Lasius ponderosae), which has not been observed in other S. semiluna populations,” said co-author James Glasier, an ecologist at the <a href="https://www.calgaryzoo.com/" target="_blank" rel="noreferrer noopener">Wilder Institute/Calgary Zoo</a>.



The caterpillars secrete a sugary substance known as honeydew, which the ants consume. In exchange, the ants protect the larvae from predators and parasites. 



Caterpillars even retreat into ant nests when disturbed or during extreme temperatures, while adult females strategically lay eggs near the entrances of ant colonies beneath silvery lupines.



<h2 class="wp-block-heading" id="h-protecting-canada-s-isolated-butterfly">Protecting Canada's isolated butterfly</h2>



Formally recognizing S. curiosolus as a distinct species has critical implications for conservation. Its long isolation has led to very low genetic variability, which can make adaptation to environmental shifts more difficult.&nbsp;



<a href="https://www.earth.com/news/red-foxes-montane-need-genetic-rescue-as-they-edge-near-extinction/" target="_blank" rel="noreferrer noopener">Genetic rescue</a> - introducing individuals from closely related populations to increase genetic diversity - is often proposed in such cases. But for S. curiosolus, this approach may not be feasible.



Due to the high degree of differentiation from S. semiluna, the risk of outbreeding depression - where introduced genes reduce fitness - is high. In fact, the species may not even be reproductively compatible with its closest relatives. 



Alternative conservation strategies, such as establishing new populations in safe habitats, may be necessary to preserve this butterfly’s future.



<h2 class="wp-block-heading" id="h-genomic-tools-advance-biodiversity-studies">Genomic tools advance biodiversity studies</h2>



Co-first author Julian Dupuis, an assistant professor at the University of Kentucky, noted that the discovery of S. curiosolus is a powerful demonstration of how genomics is revolutionizing taxonomy and conservation.



“While traditional taxonomic methods often rely on morphology alone, our study underscores the importance of integrating genomic and ecological data to uncover hidden diversity," said Dupuis.



"With the rise of genomic tools, previously unrecognized species like S. curiosolus are being discovered, highlighting the need for conservation strategies that account for cryptic biodiversity.”



<h2 class="wp-block-heading" id="h-tackling-complex-conservation-challenges">Tackling complex conservation challenges </h2>



This kind of research would not be possible without strong partnerships. Academic institutions, national parks, and conservation groups worked together to make the discovery possible.



“Our studies on S. curiosolus and S. semiluna highlight the importance of collaboration between academic scientists, nonprofit organizations, and conservation managers,” MacDonald said. “All of this work was made possible through partnerships between academic researchers, <a href="https://parks.canada.ca/" target="_blank" rel="noreferrer noopener">Parks Canada</a>, and the Wilder Institute/Calgary Zoo.”&nbsp;



“By combining expertise in genomics, field ecology, and conservation management, we were able to produce findings that not only reshape our understanding of biodiversity but also provide actionable insights for species protection.”&nbsp;



MacDonald noted that moving forward, these interdisciplinary collaborations will be critical for tackling complex conservation challenges and ensuring the long-term survival of species like S. curiosolus.



<h2 class="wp-block-heading" id="h-significance-of-the-isolated-butterfly">Significance of the isolated butterfly </h2>



Now that the isolated butterfly Satyrium curiosolus has been officially recognized, the researchers emphasize that further study is needed. Investigating its evolutionary relationships, interactions with host plants and ant species, and responses to climate change will be essential. 



Long-term monitoring led by Parks Canada and the Wilder Institute/Calgary Zoo will help determine how the butterfly copes with ongoing environmental shifts.



“This is a wonderful example of how such monitoring can connect diverse approaches and impactful answers to a simple question like ‘that’s odd - why is it there?’” said senior author Felix Sperling, a professor at the <a href="https://www.ualberta.ca/en/index.html" target="_blank" rel="noreferrer noopener">University of Alberta</a> and curator of the <a href="https://www.ualberta.ca/en/museums/museum-collections/eh-strickland-entomological-museum.html" target="_blank" rel="noreferrer noopener">Strickland Museum of Entomology</a>.



For now, the Curiously Isolated Hairstreak serves as a reminder of how even the smallest, most overlooked creatures can play a vital role in our understanding of <a href="https://www.earth.com/news/polar-light-sustains-biodiversity-over-millions-of-years/" target="_blank" rel="noreferrer noopener">biodiversity</a> - and in shaping how we protect it for future generations.



The study is published in the journal <a href="https://zookeys.pensoft.net/article/143893/" target="_blank" rel="noreferrer noopener">ZooKeys</a>.



Image Credit: MacDonald et al.



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‘Curiously isolated’ butterfly found in Canada's Rocky Mountains

In the rugged landscapes of Canada’s Rocky Mountains, researchers have...

For most of Earth’s first three billion years, oceans brimmed with single‑celled microbes that shuffled along at a slow biochemical pace -- life, but not complex. 



It lacked ample phosphorus, the nutrient every cell needs for DNA assembly, membrane stability, and ATP energy swaps. Rivers dripped only trace amounts of phosphorus into seawater, holding biology to pint‑size proportions and throttling evolutionary experiments in body size.



Evidence for that long famine sits in ancient mudstones, which contain scant phosphate minerals compared with younger rocks. 



Productivity lagged; oxygen production stayed low; food chains hid in microscopic layers. When phosphorus finally surged, life gained the <a href="https://www.earth.com/news/key-ingredients-building-blocks-of-life-found-in-asteroid-bennu-dust-sample/" target="_blank" rel="noreferrer noopener">building blocks</a> to try larger, more complex designs.



<h2 class="wp-block-heading" id="h-volcanic-chaos-and-complex-life">Volcanic chaos and complex life</h2>



About 2.1 billion years ago, the Congo and São Francisco continental blocks slammed together. 



Their collision squeezed faults, stirred magma, and unleashed underwater volcanoes across a shallow inland sea now preserved as the <a href="https://en.wikipedia.org/wiki/Franceville_basin" target="_blank" rel="noreferrer noopener">Francevillian sub‑basin</a> in Gabon. 



Eruptions pumped phosphorus‑rich fluids straight into the water and walled the basin off from the wider ocean.



<a href="https://www.earth.com/news/light-pollution-fuels-toxic-algae-and-alters-carbon-cycling-in-lakes/" target="_blank" rel="noreferrer noopener">Cyanobacteria</a> thrived in this enclosed lagoon, releasing oxygen and burying carbon as fast as nutrients arrived. 



The chemical bloom raised local energy budgets many times over, creating conditions that favored bigger bodies and cooperative cell assemblies rather than lone bacterial drifters.



<h2 class="wp-block-heading" id="h-fossil-discovery-challenges-timeline">Fossil discovery challenges timeline</h2>



Black shales from the basin hold disc‑shaped, ribbon‑shaped, and leaf‑shaped impressions up to six inches long - giants for their day. 



Their regular outlines and clustering hint at biological growth rather than odd mineral concretions. They appear in the same sedimentary layers that show the phosphorus spike, linking anatomy to chemistry.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/08/earth_complex-life_began-much-earlier_lobate-macrofossils_credit-UPoitiers_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/08/earth_complex-life_began-much-earlier_lobate-macrofossils_credit-UPoitiers_1s.webp" alt="The team’s research provides strong validation for the biological affinity of the lobate macrofossils whose validity has been widely debated in the scientific community. Credit: Professor Abderrazzak El Albani of the University of Poitiers, France" class="wp-image-1966454"/></a><figcaption class="wp-element-caption">The team’s research provides strong validation for the biological affinity of the lobate macrofossils whose validity has been widely debated in the scientific community. Click image to enlarge. Credit: Professor Abderrazzak El Albani of the University of Poitiers, France</figcaption></figure>



If these forms truly represent multicellular life, they push the arrival of complex organisms back by roughly 1.5 billion years. 



That jump rewrites the <a href="https://www.earth.com/news/timeline-of-life-ice-ages-gave-evolution-a-kick-start/" target="_blank" rel="noreferrer noopener">evolutionary timeline</a>, showing that animals were not the first to test large size; earlier prototypes surfaced when nutrients and oxygen briefly aligned.



<h2 class="wp-block-heading" id="h-chemistry-meets-biology">Chemistry meets biology</h2>



The new work, led by <a href="https://www.cardiff.ac.uk/" target="_blank" rel="noreferrer noopener">Cardiff University</a> geobiologist Dr. Ernest Chi Fru, pairs detailed rock chemistry with fossil mapping. 



“The availability of phosphorus in the environment is thought to be a key component in the evolution of life on Earth, especially in the transition from simple single‑celled organisms to complex organisms like animals and plants," Dr. Chi Fru explained.



“We already know that increases in marine phosphorus and seawater oxygen concentrations are linked to an episode of biological evolution around 635 million years ago. Our study adds another, much earlier episode into the record, 2.1 billion years ago.”



Digging into the basin’s history, Dr. Chi Fru explained that the volcanic activity following the collision of continental blocks likely isolated the basin from the global ocean, creating a nutrient-rich inland sea. 



This stable environment supported abundant <a href="https://www.earth.com/news/earth-was-once-a-green-marble-before-its-oceans-turned-blue/" target="_blank" rel="noreferrer noopener">cyanobacterial photosynthesis</a>, which in turn oxygenated the water and generated enough energy to support larger, more complex life forms like those seen in the fossils from the period.



<h2 class="wp-block-heading" id="h-why-the-complex-life-experiment-stalled">Why the complex life experiment stalled</h2>



Outside the Francevillian lagoon, oceans still lacked phosphorus and carried little oxygen. Larger creatures would have struggled in those harsh surroundings. 



The basin’s shoreline barrier turned the ecosystem into a biological bubble; when volcanic vents cooled and nutrient flow faded, conditions reverted and the macro‑organisms vanished.



Their failure to spread shows that evolution tests possibilities whenever resources allow, but those trials can fizzle if the wider planet remains hostile. 



Complexity needs both innovation and the freedom to roam - something the early <a href="https://www.earth.com/news/timeline-of-lifes-evolution-extended-by-nearly-1-5-billion-years/" target="_blank" rel="noreferrer noopener">Proterozoic world</a> could not yet provide.



<h2 class="wp-block-heading" id="h-two-steps-to-modern-animals">Two steps to modern animals</h2>



Researchers see a “two‑step” path. The Francevillian pulse marks step one, following the first known rise in atmospheric oxygen. 



Step two arrived nearly <a href="https://www.earth.com/news/luca-last-universal-common-ancestor-progenitor-all-life-on-earth/" target="_blank" rel="noreferrer noopener">1.5 billion years later</a>, when another oxygen surge met a more sustained supply of nutrients during the Ediacaran period. 



That tandem lifted complex life beyond isolated pockets, setting the stage for the Cambrian explosion and the diverse animals that populate Earth now.



The record hints that ample phosphorus may be as critical as oxygen for forging ecosystems full of active, energy‑demanding organisms. Without both factors in play, biology tends to stay microscopic.



<h2 class="wp-block-heading" id="h-why-does-any-of-this-matter">Why does any of this matter?</h2>



Astrobiologists comb <a href="https://www.earth.com/news/building-blocks-of-life-found-on-the-dwarf-planet-ceres/" target="_blank" rel="noreferrer noopener">exoplanet atmospheres</a> for oxygen because it signals possible photosynthesis. The Francevillian story suggests they should also weigh a planet’s phosphorus cycle. 



A world awash in oxygen but starved of phosphate could linger in a microbial phase for eons. Conversely, tectonic quirks that sprinkle oceans with phosphate might jump‑start evolutionary leaps.



Phosphorus, then, is more than fertilizer for terrestrial crops. It is a potential cosmic throttle on complexity, deciding whether life remains small or reaches for new biological heights.



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The full study was published in the journal <a href="https://www.sciencedirect.com/science/article/abs/pii/S0301926824001669?via%3Dihub" target="_blank" rel="noreferrer noopener">Precambrian Research</a>.



Image Credit: Professor Abderrazzak El Albani of the University of Poitiers, France



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Is this a fossil? If so, complex life on Earth emerged 1.5 billion years earlier

For most of Earth’s first three billion years, oceans brimmed...

Dolphins in waters around the United Kingdom have faced mounting pressure from chemical pollution over the past few decades. Many short-beaked common <a href="https://www.earth.com/news/national-dolphin-day-2025-honoring-the-oceans-most-playful-minds/" target="_blank" rel="noreferrer noopener">dolphins</a> have washed ashore, and reports show they carried worrying levels of toxins in their tissue.



Rosie Williams, a researcher at the <a href="https://www.zsl.org" target="_blank" rel="noreferrer noopener">Zoological Society of London</a>, noted that once-banned chemicals and changing sea temperatures could be adding to these animals’ health troubles.



In particular, researchers have pointed to shifts in the water’s characteristics and high burdens of polychlorinated biphenyls (<a href="https://www.epa.gov/pcbs/learn-about-polychlorinated-biphenyls" target="_blank" rel="noreferrer noopener">PCBs</a>).



<h2 class="wp-block-heading" id="h-how-chemicals-and-heat-harm-dolphins">How chemicals and heat harm dolphins</h2>



PCBs were widely used in manufacturing for a long time. In the 1980s, officials in the U.K. decided these chemicals were too dangerous and outlawed them because of their toxic nature.



Despite that move, it seems that residues of these compounds are still entering the <a href="https://www.earth.com/news/super-pod-of-1500-dolphins-captured-in-stunning-drone-footage/" target="_blank" rel="noreferrer noopener">ocean</a>. Some experts believe that old industrial sites leak traces into waterways, and these flows eventually reach marine habitats.



In the meantime, sea surface temperatures appear to be edging higher in parts of the U.K. This warming of the water can put stress on many species, including dolphins that rely on stable conditions for feeding and other life processes.



<h2 class="wp-block-heading" id="h-dolphins-suffer-from-toxins">Dolphins suffer from toxins</h2>



Short-beaked common dolphins rank high up in food chains, which makes them prone to storing more toxins in their bodies. Many <a href="https://www.earth.com/news/young-dolphins-who-play-with-others-become-successful-adults/" target="_blank" rel="noreferrer noopener">fish</a> at lower levels carry smaller amounts of these compounds, but dolphins can accumulate bigger doses by eating prey that has already absorbed contaminants.



“Their position at the top of the food web means that toxins from their prey accumulate in their blubber, providing a concentrated snapshot of chemical pollutants in the ocean – though unfortunately at the expense of their health,” said Thea Taylor, managing director of <a href="https://sussexdolphinproject.org" target="_blank" rel="noreferrer noopener">Sussex Dolphin Project</a>.



When PCBs gather in the fatty tissues of these animals, trouble can follow. According to researchers, these toxins might hurt dolphins’ immune systems, leaving them more vulnerable to various infections.



<h2 class="wp-block-heading" id="h-chemical-damage-in-stranded-dolphins">Chemical damage in stranded dolphins </h2>



In an effort to pinpoint the causes of their deaths, experts analyzed data from short-beaked common dolphins that were found stranded on U.K. shores. The <a href="https://www.nature.com/articles/s42003-025-07858-7" target="_blank" rel="noreferrer noopener">findings</a> revealed a worrying connection between PCB levels and mortality from infectious diseases.



The researchers noted that every slight rise in PCB load carried a higher chance of fatal infections. They also found that spikes in sea temperatures often matched a jump in disease risk.



Some of these illnesses included gastritis, enteritis, bacterial complications, and pneumonia. In many cases, they turned fatal once the <a href="https://www.earth.com/news/dolphins-and-whales-got-new-backbones-for-life-in-the-water/" target="_blank" rel="noreferrer noopener">dolphins</a>’ immune defenses weakened.



<h2 class="wp-block-heading" id="h-the-role-of-water-temperatures">The role of water temperatures</h2>



Scientists suggest that warmer waters might also shift prey distributions. That could complicate the dolphins’ feeding patterns, leaving them in worse shape and more likely to get sick.



Some experts worry that higher temperatures might boost the activity of disease-causing organisms in the ocean. If pathogens grow faster, dolphins become more likely to encounter them.



Taken together, these factors seem to form a harmful cycle: weaker dolphins, more pathogens, and chemicals that make everything worse. A multi-layered plan is needed to address all these pressures at once.



<h2 class="wp-block-heading" id="h-old-chemicals-still-pollute-waters">Old chemicals still pollute waters</h2>



Even though PCBs were banned in the U.K. more than 40 years ago, they remain a concern. They have a tendency to cling to sediment and can linger in the environment for very long periods.



Certain manufacturing processes still lead to trace amounts of PCBs that find their way into water. Regulators face a tough challenge in tightening controls and removing older sources of these chemicals.



Rosie Williams has pointed out that these persistent compounds keep surfacing in new samples. Some are found in estuaries or coastal areas where industrial runoff takes a toll.



<h2 class="wp-block-heading" id="h-a-call-for-protective-measures">A call for protective measures</h2>



Marine biologists often describe <a href="https://www.fisheries.noaa.gov/feature-story/early-bloom-toxic-algae-southern-california-sickens-hundreds-sea-lions-and-dolphins" target="_blank" rel="noreferrer noopener">neurotoxins</a>, heavy metals, and chemical pollutants in ocean waters as forces that aggravate existing <a href="https://www.sciencedirect.com/science/article/pii/S0304389423014863" target="_blank" rel="noreferrer noopener">threats</a>. A rise in sea temperature comes on top of everything else, stacking stress upon stress.



“The ocean is facing ‘a triple planetary crisis’ – climate change, pollution and biodiversity loss – but we often look at threats in isolation,” said Williams.



She and her fellow authors believe that better management of industrial waste and more effective water treatment will help break this cycle.



<h2 class="wp-block-heading" id="h-tackling-ocean-chemicals-to-save-dolphins">Tackling ocean chemicals to save dolphins</h2>



Environmental groups have tried to remove contaminated sediments through dredging in certain places. Others hope to enhance filtration techniques so persistent chemicals get trapped before they spread any further.



Experts also note that PCBs are not the only cause for concern. Similar substances, like perfluoroalkyl and polyfluoroalkyl substances (<a href="https://www.niehs.nih.gov/health/topics/agents/pfc" target="_blank" rel="noreferrer noopener">PFAS</a>), also carry toxic <a href="https://pubs.acs.org/doi/10.1021/es001834k" target="_blank" rel="noreferrer noopener">effects</a> that might harm both wildlife and people if not regulated.



“While we cannot reverse the contamination that has already occurred, it is critical to prevent further chemical inputs into the environment,” said Taylor.



<h2 class="wp-block-heading" id="h-dolphin-health-shows-marine-future">Dolphin health shows marine future</h2>



Many researchers agree that dolphins serve as a valuable bellwether for <a href="https://www.earth.com/news/elevated-mercury-levels-discovered-in-dolphins/" target="_blank" rel="noreferrer noopener">ocean</a> health. If top predators suffer, it can reflect risks to smaller organisms and ultimately to human communities too.



Environmental scientists have stressed that these findings should guide policies for marine protection. Even though we cannot simply erase toxins already in the waters, curbing any additional discharge might limit the damage over time.



<h2 class="wp-block-heading" id="h-reducing-chemicals-for-dolphin-survival">Reducing chemicals for dolphin survival</h2>



Going forward, experts will determine which regions have the highest levels of PCB pollution. Some areas may need urgent interventions, especially if incidents of dolphin stranding keep increasing.



Ecosystems are complicated, and climate shifts could spark changes that no one has fully predicted. Observers hope that early and decisive action will give marine life a chance to adapt without getting overwhelmed by chemical burdens.



The study is published in the journal <a href="https://www.nature.com/articles/s42003-025-07858-7" target="_blank" rel="noreferrer noopener">Communications Biology</a>.



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Dolphins face serious threats from chemical pollution and ocean warming

Dolphins in waters around the United Kingdom have faced mounting...

In cities around the world, empty lots and old industrial sites are being transformed into patches of color and life through the planting of wildflowers. These green spaces are meant to help pollinators such as bees and butterflies, providing much-needed food sources from urban wildflowers.



But new research suggests that the soil in which these flowers are planted might be doing more harm than good for the plants and their pollinators.



A team of scientists discovered that wildflowers growing on previously developed land - including sites where buildings and factories once stood - can take up harmful metals such as lead, arsenic, cadmium, and chromium.



These metals don’t just stay in the plants. They end up in the nectar that pollinators feed on, introducing toxic substances directly into their diets.



<h2 class="wp-block-heading" id="h-polluted-roots-of-urban-wildflowers">Polluted roots of urban wildflowers</h2>



Many cities, particularly older ones, have soil that’s been exposed to decades of industrial activity. Sources including cement dust, mining runoff, and vehicle emissions leave behind long-lasting contaminants which can affect urban wildflowers.



In the post-industrial city of Cleveland, Ohio - where the study took place - over 33,000 vacant lots remain from years of population decline and industrial use. Researchers tested <a href="https://www.earth.com/news/sipping-on-nectar-hummingbirds-consume-a-surprising-amount-of-alcohol/" target="_blank" rel="noreferrer noopener">nectar</a> from common self-seeding wildflowers growing in these urban spaces.



The wildflowers included white clover, wild carrot, bindweed, and chicory - plants known to attract <a href="https://www.earth.com/news/why-bees-choose-the-same-flowers-again-and-again/" target="_blank" rel="noreferrer noopener">bees</a> and provide nectar throughout the growing season. Every plant tested contained at least one toxic metal.



Lead was the most common and found in the highest concentrations. The amount and type of metal varied by plant species. 



Chicory had the highest total metal levels, followed by white clover, wild carrot, and bindweed. These are not rare or exotic flowers - they grow widely across cities in both the U.S. and the UK, often planted intentionally as part of pollinator-friendly initiatives.



<h2 class="wp-block-heading" id="h-urban-wildflowers-affect-bee-health">Urban wildflowers affect bee health</h2>



Even small amounts of metal in nectar can affect <a href="https://www.earth.com/news/habitat-quality-and-biodiversity-impact-bee-health/" target="_blank" rel="noreferrer noopener">bee health</a>. Previous studies have shown that these contaminants damage pollinators’ ability to learn and remember, which directly affects how well they can forage for food. 



In extreme cases, the toxins can lead to population decline and even death. Reducing the risk of metal exposure is critical for the success of urban pollinator conservation schemes, according to the researchers.



They also noted that certain plants are more likely to absorb these contaminants than others - a fact that should inform future planting strategies. 



One solution is to test soil quality before sowing wildflowers. Polluted areas might need to be cleaned up first.



In places where harmful metals are already present, managing wildflowers through regular mowing may help. Limiting their bloom time can reduce the amount of contaminated nectar available to bees.



<h2 class="wp-block-heading" id="h-bees-can-benefit-from-wildflower-soil">Bees can benefit from wildflower soil</h2>



Dr. Sarah Scott is an expert in the University of Cambridge’s <a href="https://www.zoo.cam.ac.uk/" target="_blank" rel="noreferrer noopener">Department of Zoology</a> and the study’s lead author.



“It’s really important to have wildflowers as a <a href="https://www.earth.com/news/dancing-bees-reveal-that-urban-gardens-are-a-good-source-of-food/" target="_blank" rel="noreferrer noopener">food source for the bees</a>, and our results should not discourage people from planting wildflowers in towns and cities,” Dr. Scott explained.



“We hope this study will raise awareness that soil health is also important for bee health. Before planting wildflowers in urban areas to attract bees and other pollinators, it’s important to consider the history of the land and what might be in the soil - and if necessary - find out whether there’s a local soil testing and cleanup service available first.”



<h2 class="wp-block-heading" id="h-a-practical-way-to-support-pollinators">A practical way to support pollinators</h2>



Pollinators are <a href="https://www.earth.com/news/pollinators-are-disappearing-and-its-bad-news-for-plants/" target="_blank" rel="noreferrer noopener">vital</a> to the world’s food supply. They help plants - including fruits and vegetables such as apples and tomatoes - develop and reproduce.



Natural pollination is estimated to contribute billions of dollars to global crop production each year. But wild pollinator populations have plummeted by over 50% in the past 50 years, largely due to habitat loss, land use changes, pesticides, and climate change.



“Climate change feels so overwhelming, but simply planting flowers in certain areas can help towards conserving pollinators, which is a realistic way for people to make a positive impact on the environment,” said Dr. Scott.



This new research serves as a reminder that while planting wildflowers is a step in the right direction, the quality of the land they’re planted on matters just as much. 



A colorful patch of blooms may look like a haven for bees - but if the soil beneath holds a toxic past, it could turn into a hidden hazard.



The full study was published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1002/ece3.71238" target="_blank" rel="noreferrer noopener">Ecology and Evolution</a>.



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Urban wildflowers may be harming bees

In cities around the world, empty lots and old industrial...

In the dense rainforests of the Republic of Congo, western lowland gorillas are often seen foraging through the soil. They were long assumed to be foraging for insects, but recent research has turned this assumption on its head. 



The real prize hidden in the dirt is not insects at all, but deer truffles - specifically, a species known as Elaphomyces labyrinthinus.



This revelation not only reshapes our understanding of <a href="https://www.earth.com/news/male-infertility-humans-linked-same-genes-gorilla-small-penises/" target="_blank" rel="noreferrer noopener">gorilla</a> behavior, but also highlights the deep value of traditional ecological knowledge. The research, from the Nouabalé-Ndoki National Park, reveals how primates are deeply connected to their forest environment.



<h2 class="wp-block-heading" id="h-discovery-of-truffle-eating-gorillas">Discovery of truffle-eating gorillas</h2>



The study was led by Gaston Abea, a member of the semi-nomadic Bangombe people and the first Indigenous person in Ndoki to become the lead author of a peer-reviewed scientific paper. 



Born in the village of Bomassa, Abea brought together deep cultural understanding, sharp observational skills, and modern scientific methods to uncover the truth behind soil-scratching <a href="https://www.earth.com/news/are-gorillas-self-aware-new-research-challenges-old-assumptions/" target="_blank" rel="noreferrer noopener">gorillas</a>.



Abea spent over a decade working at the Mondika and Goualougo field stations, tracking gorilla behavior. His local tracker background gave him a unique perspective, helping him spot patterns others might miss.



"My people's traditional knowledge of these forests is endangered by modern lifestyles but is proving invaluable in continuing to study and preserve these ecosystems," said Abea.



His work strengthens the growing recognition of Indigenous perspectives in conservation, though academic research still often overlooks them.



<h2 class="wp-block-heading" id="h-truffle-digging-is-a-regular-behavior">Truffle digging is a regular behavior </h2>



To understand this behavior, the researchers conducted daily observations of four different gorilla <a href="https://www.earth.com/news/primate-bonds-are-not-just-about-love-theyre-strategic/" target="_blank" rel="noreferrer noopener">groups</a> across two sites: the Goualougo Triangle and the Djéké Triangle. They observed these groups nearly every day for almost ten years, documenting each instance of soil scratching.



The team also used molecular classification tools to identify the truffles being foraged. They conducted group scans to determine how much time gorillas spent searching for truffles. 



Then, the researchers used video observations to measure how efficient the animals were during these foraging bouts. Over time, the pattern became clear: soil scratching was a consistent strategy to find deer truffles, not an aimless search or an insect hunt.



<h2 class="wp-block-heading" id="h-some-gorillas-dig-more-than-others">Some gorillas dig more than others</h2>



Interestingly, not all gorilla groups embraced this <a href="https://www.earth.com/news/primate-bonds-are-not-just-about-love-theyre-strategic/" target="_blank" rel="noreferrer noopener">behavior</a> equally. Soil scratching was most frequent in Buka’s group, followed by Kingo’s and Mététélé’s groups. 



In contrast, the Loya-Makassa group rarely engaged in truffle foraging. The behavior’s distribution seems tied partly to the availability of truffles, but not entirely.



Social factors appear to influence the practice as well. In one striking example, an adult female gorilla moved from a group that rarely scratched soil to one that did so almost daily. She soon began to mirror the habits of her new group, suggesting that cultural transmission may shape how gorillas forage.



"This is an exciting finding for our understanding of gorilla foraging behavior," said David Morgan of the <a href="https://www.lpzoo.org" target="_blank" rel="noreferrer noopener">Lincoln Park Zoo</a>, who worked on the study and has spent years researching in Ndoki.



<h2 class="wp-block-heading" id="h-gorillas-carefully-select-truffles">Gorillas carefully select truffles</h2>



One of the most vivid pieces of evidence came from a gorilla named Jeanne. Photographed in the Goualougo Triangle, Jeanne was seen scraping away forest leaf litter with her hands. 



Once the gorilla exposed the soil, she pinched her fingers together and brought a small round object - presumably a truffle - to her mouth. This precise motion defined a successful foraging attempt and offered a glimpse into just how deliberate the behavior is.



The study's inclusion in a special issue of the journal Primates marked a milestone. The issue celebrated 25 years of research in the Ndoki forest and brought attention to <a href="https://www.earth.com/news/most-early-primates-lived-in-pairs-and-were-not-solitary-creatures/" target="_blank" rel="noreferrer noopener">behaviors</a> that may have otherwise gone unnoticed.



<h2 class="wp-block-heading" id="h-protecting-truffle-foraging-traditions">Protecting truffle-foraging traditions</h2>



Abea’s findings were incorporated into an ecological impact assessment for the Djéké Triangle.



As a result, conservation managers decided to adjust planned locations for tourism-related infrastructure. The aim was to protect areas where truffle foraging occurs regularly, ensuring this unique behavior could continue undisturbed.



"This is Gaston's first article as lead author - a milestone for his career and for our capacity-building efforts," said Morgan. "He is the first research assistant of Indigenous People's origin to become first author, in the Ndoki landscape." 



The decision to shift construction plans also highlights a growing understanding of cultural behavior in wildlife. These are not just instinctive acts but socially-influenced practices that may vary by group and change with experience.



<h2 class="wp-block-heading" id="h-from-gorilla-hunters-to-guardians">From gorilla hunters to guardians</h2>



Abea’s story represents more than scientific achievement. It also reflects a cultural shift within his own community. He is one of over 100 Congolese research assistants trained since 2005 at Ndoki, many of whom come from nearby villages and Indigenous Ba’Aka communities.



"Our ancestors used to hunt gorillas, now we protect them, and I hope to inspire other Ba'Akas to do the same," said Abea.



His journey, from a boy in Bomassa to lead author of a major scientific article, mirrors the broader transformation in conservation thinking - one that values the voices and wisdom of local communities.



<h2 class="wp-block-heading" id="h-local-insights-shape-global-research">Local insights shape global research</h2>



While the knowledge about gorillas and foraging for truffles is slowly gaining recognition in the sciences, it still appears too rarely in published research. This study shows how blending local knowledge with science can reveal key insights into animal behavior and ecosystem health.



"This paper shows how much traditional ecological knowledge, scientific research, and conservation can benefit from each other," said Dr. Sydney Ndolo, second author of the paper and now professor of Botany at Université Marien Ngouabi in Brazzaville.



"Local cultures will only survive if they are properly valued, and research is an important means of achieving this."



Through Abea’s work and this study, a hidden part of gorilla life now comes into view - one shaped by truffles, food, forest, and social bonds. And alongside it, the role of Indigenous knowledge in science gains new ground.



The study is published in the journal <a href="https://link.springer.com/article/10.1007/s10329-024-01151-7" target="_blank" rel="noreferrer noopener">Primates</a>.



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Gorillas are digging for a surprising food in the jungle soil

In the dense rainforests of the Republic of Congo, western...

A honeybee colony seems like a perfect model of unity. Inside the hive, thousands of individuals work in rhythm. Foragers seek nectar. Water collectors hydrate the group. Ventilators fan their wings to cool the brood. Guard bees monitor the entrance. 



In this coordinated dance, defense is critical - but personality plays a role, and not all bees choose to sting.



What triggers a bee to sting? Why do some launch themselves into action while others hold back? A new study from the <a href="https://www.uni-konstanz.de/en/" target="_blank" rel="noreferrer noopener">University of Konstanz</a> has explored these questions.



Researchers discovered that not only do <a href="https://www.earth.com/news/why-bees-choose-the-same-flowers-again-and-again/" target="_blank" rel="noreferrer noopener">bees</a> differ in their readiness to sting, but their personalities remain consistent across time and context. The hive may move as one, but decisions start within the individual.



<h2 class="wp-block-heading" id="h-bees-choose-to-sting-or-abstain">Bees choose to sting or abstain</h2>



Doctoral student Kavitha Kannan and neurobiologist Morgane Nouvian led the research at the University of Konstanz. To examine stinging behavior, they needed a reliable group. They selected guard <a href="https://www.earth.com/news/urban-wildflowers-may-be-harming-bees/" target="_blank" rel="noreferrer noopener">bees</a> - those that are naturally closer to the frontlines.



"Basically, you can expect that, simply by the distribution of tasks, a collector will have a different stinging behaviour than a guard. As we wanted to exclude as many influencing factors as possible, this selection was the first logical step. We were then able to gradually test other influencing factors," explained Kannan.



The bees were exposed to a rotating dummy that simulated a predator. The setup allowed repeated trials without harming the <a href="https://www.earth.com/news/world-honey-bee-day-protecting-our-vital-pollinators/" target="_blank" rel="noreferrer noopener">bees</a>. When a bee stings in natural conditions, its stinger is lost and it dies. Here, the bees could engage or abstain multiple times without being harmed. Each action or lack of action was logged.



<h2 class="wp-block-heading" id="h-alarm-scents-don-t-trigger-all-bees">Alarm scents don’t trigger all bees</h2>



In honeybees, a sting is more than a weapon. It is a call to arms. When a <a href="https://www.earth.com/news/artificial-diet-offers-hope-for-saving-endangered-honey-bees/" target="_blank" rel="noreferrer noopener">bee</a> stings, it releases a complex scent signal known as the sting alarm pheromone (SAP), which is primarily composed of iso-amyl acetate (IAA).



This alerts others and encourages them to join in the group defense. As more bees respond, the concentration of IAA increases. Eventually, the response declines - a strategy that may ensure not too many casualties occur. 



The study found that SAP does influence bees, but not equally. When exposed to synthetic IAA, bees showed varied reactions. The presence of this signal raised the odds of stinging - but some bees still held back.



"Ultimately, it turned out that although these factors had an influence, they did not impact the predictability of individual stinging behavior," said Nouvian. The bees that chose to sting in one trial often did so again. Others remained passive, regardless of the alarm.



<h2 class="wp-block-heading" id="h-bee-personality-and-stinging-behavior">Bee personality and stinging behavior </h2>



To probe deeper, the researchers tracked <a href="https://www.earth.com/news/world-wildlife-day-2025-a-global-call-to-protect-nature/" target="_blank" rel="noreferrer noopener">bee</a> responses over four repeated trials. The results were striking. Stinging behavior stayed consistent in most individuals. Some stung every time, others never stung, and very few wavered between the two choices.



Even more interestingly, the bees showed greater consistency in behavior when the time between trials was less. This suggests that internal states - perhaps neurological or hormonal - affect decisions. A bee wasn’t flipping a coin each time. It was acting from a semi-stable inner condition.



This state dependence was especially clear when patterns like 1−0−1−0 (stinging, not stinging, stinging, not stinging) were rare. Instead, most bees either kept attacking or kept abstaining. These temporal patterns implied that bees make evaluations based on more than stimulus alone - they carry a mood-like persistence.



<h2 class="wp-block-heading" id="h-peers-aren-t-always-influential">Peers aren't always influential</h2>



Bees are famously social. Still, the presence of another bee had a surprising effect. Rather than encouraging aggression, it reduced it. Pairs of bees were less likely to sting than solo bees, even when faced with the same threat.



This finding challenges currently-held assumptions. Larger groups don’t necessarily mean higher per-bee aggression. In fact, the data aligns with older studies suggesting that larger colonies can show less per-capita defense.



When tested in pairs, real bees stung less than would be predicted by combining data from singles. The effect appeared again, even when both bees could detect IAA. "Pairs as entities did [respond to IAA] (z = −4.327, p &lt; 0.001) … individual bees within pairs (z = −3.68, p &lt; 0.001)," the research paper noted.



Yet, the experts also found that SAP, when released naturally by one bee, could recruit another. The first bee’s sting raised the odds that its partner would follow. But over multiple exposures, this recruitment faded. Responsiveness to IAA dropped, trial by trial. Even social signals have an expiry date.



<h2 class="wp-block-heading" id="h-bees-with-gentle-personalities-sting-less">Bees with gentle personalities sting less</h2>



Another part of the study tested whether bees adjust based on their companions' personalities. After identifying aggressive and gentle bees, the team mixed them in various combinations. Would gentle bees become bolder when placed among aggressive peers?



The answer was no. Bees classified as gentle stayed that way, even in groups full of stingers. Aggressive bees also stayed true to type. The only thing that influenced changes was the SAP level in the arena. More SAP raised the chance of stinging, less reduced it.



These results reveal that honeybees don’t mirror the behavior of those around them. They react to chemical signals, not peer pressure. 



“We propose that [Lecomte’s] results were rather the consequence of the reduced group size,” noted the researchers, questioning earlier claims about social inhibition among bees.



<h2 class="wp-block-heading" id="h-bees-resist-group-influence">Bees resist group influence</h2>



What does this mean for our understanding of bee society? This study breaks the idea of a hive acting as one. Each bee carries an internal threshold. That threshold can be nudged by alarm pheromones or dulled by time. It can be lowered by a sense of threat or raised by the presence of others.



Still, the final decision lies with the bee. Stinging isn’t a hive decision. It’s an individual one, shaped by subtle internal states and stable personality.



"That bees stop responding to the SAP but not to the threat itself might be another example of social information being less valued than personal information," the researchers suggested.



<h2 class="wp-block-heading" id="h-future-research-on-honeybee-behavior">Future research on honeybee behavior </h2>



This study paves the way for deeper research into honeybee behavior. By proving the stability of individual responses, it opens doors for exploring the biological roots of personality. Future work could look into the neurobiology of aggression or the hormonal triggers behind it.



The hive may appear unified, but it is made of diverse minds. Some are ready to die for the colony. Others prefer to wait, even when the alarm is raised. Both types are part of nature’s plan - and together, they balance risk and survival.



The study was published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rsos.241295" target="_blank" rel="noreferrer noopener">Royal Society Open Science</a>.



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Bees have unique personalities that determine whether they sting

A honeybee colony seems like a perfect model of unity....

Most people imagine crocodiles as relics from the dinosaur era - unchanged, prehistoric predators lurking in murky waters. But their survival story is much more complex.



New research from the <a href="https://www.uco.edu/" target="_blank" rel="noreferrer noopener">University of Central Oklahoma</a> and the University of Utah shows that these animals aren’t just fossils with teeth. They’ve made it through two mass extinctions, thanks in part to one big advantage: adaptability.



<h2 class="wp-block-heading" id="h-why-crocodiles-survived">Why crocodiles survived</h2>



Crocodylians - today’s crocodiles, alligators, and gharials - are the last surviving members of a larger group called crocodylomorphs, which goes back 230 million years.



These ancient creatures included many now-extinct species that once lived in a range of environments.



The research is the first to closely examine the diets of these extinct animals to understand how some survived while others did not.



“Lots of groups closely related to crocodylians were more diverse, more abundant, and exhibited different ecologies, yet they all disappeared except these few generalist crocodylians alive today,” said Keegan Melstrom, lead author and assistant professor at UCO. 



“<a href="https://www.earth.com/news/animal-extinction-risk-is-heavily-influenced-by-climate-change/" target="_blank" rel="noreferrer noopener">Extinction</a> and survivorship are two sides of the same coin. Through all mass extinctions, some groups manage to persist and diversify. What can we learn by studying the deeper evolutionary patterns imparted by these events?”



Today, many scientists believe Earth is entering its <a href="https://www.earth.com/news/the-sixth-mass-extinction-is-currently-in-progress/" target="_blank" rel="noreferrer noopener">sixth mass extinction</a>, fueled by habitat loss, invasive species, and climate change. Studying past survivors, like crocodylians, may offer clues on how to protect today’s wildlife.



<h2 class="wp-block-heading" id="h-crocodylians-vs-mammals">Crocodylians vs. mammals</h2>



For years, <a href="https://www.earth.com/news/mammals-ground-dwellers-survived-the-asteroid-impact-that-killed-the-dinosaurs/" target="_blank" rel="noreferrer noopener">mammals</a> have been the go-to group for studying extinction and survival. Their flexible diets and ability to live in many habitats seemed to explain their resilience. But crocodylomorphs have long been overlooked in this conversation. This crocodylian study changes that.



“There’s a danger of trying to draw conclusions from millions of years ago and directly apply it to conservation. We have to be cautious,” said co-author Randy Irmis. 



“If people study mammals and reptiles and find the same patterns with respect to extinction survival, then we might predict that species with a generalist diet may do better. That information helps us make predictions, but it’s unlikely we’ll ever be able to pick out which individual species will survive.”



<h2 class="wp-block-heading" id="h-shrinking-diversity-of-crocodile-ancestors">Shrinking diversity of crocodile ancestors</h2>



Modern crocodylians are known for living in water and eating just about anything that crosses their path - fish, small mammals, even fellow crocodiles. But this lifestyle is only a narrow snapshot of their past.



In the Late Triassic Period, crocodylomorph ancestors lived mostly on land. They were small-to-medium-sized predators feeding on small animals. Other reptile groups were more dominant at the time, showing off a wide range of sizes and shapes. 



But when the end-Triassic extinction struck, these dominant groups vanished. Only <a href="https://www.earth.com/news/ancient-crocodiles-weighed-1000-pounds-and-walked-on-two-legs/" target="_blank" rel="noreferrer noopener">crocodylomorphs</a>, especially those with flexible diets, pulled through.



“After that, it goes bananas,” said Melstrom. “Aquatic hypercarnivores, terrestrial generalists, terrestrial hypercarnivores, terrestrial herbivores - crocodylomorphs evolved a massive number of ecological roles throughout the time of the dinosaurs.”



For a while, crocodylomorphs thrived in every corner of their ecosystems. But during the Late Cretaceous Period, their diversity began to shrink. By the time a meteor ended the age of dinosaurs 66 million years ago, only a few crocodylian lineages survived - most of them semi-aquatic generalists.



<h2 class="wp-block-heading" id="h-the-evolution-of-crocodylians">The evolution of crocodylians</h2>



To understand what these animals ate, the researchers studied the shape of fossilized teeth and skulls. 



Sharp, pointed teeth suggested a meat-heavy diet, while flatter, grinding teeth pointed to a plant-based menu. Skull structure also offered clues about how the animals hunted and fed.



The crocodylian study was massive in scope. The researchers traveled to museum collections in seven countries across four continents. 



The experts examined the skulls of 99 extinct crocodylomorph species and 20 living crocodylian species. To compare, they also analyzed dietary traits in 89 mammals and 47 lizards. This fossil record, stretching over 230 million years, revealed how crocodylians evolved into a variety of forms.



Some were fast-moving land predators. Others grazed like herbivores. Many returned to the water. Today, that wide-ranging history is mostly hidden behind the toothy grin of a croc.



<h2 class="wp-block-heading" id="h-will-crocodiles-survive-future-changes">Will crocodiles survive future changes?</h2>



While modern crocodylians continue to thrive in rivers and swamps, many face serious threats. The gharial of the Himalayan foothills and the Cuban crocodile in the Zapata Swamp are critically endangered. Their survival may still hinge on one of their oldest traits - a flexible diet.



“When we see living crocodiles and <a href="https://www.earth.com/news/alligators-birds-hearing-dinosaur/" target="_blank" rel="noreferrer noopener">alligators</a>, rather than thinking of ferocious beasts or expensive handbags, I hope people appreciate their amazing 200+ million years of evolution, and how they’ve survived so many tumultuous events in Earth history,” said Irmis. 



“Crocodylians are equipped to survive many future changes - if we’re willing to help preserve their habitats.”



The full crocodylian study was published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1111/pala.70005" target="_blank" rel="noreferrer noopener">Palaeontology</a>.



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How crocodiles survived Earth's biggest mass extinctions

Most people imagine crocodiles as relics from the dinosaur era...

Industrial fishing has been a huge food source for decades. It pulls enormous amounts of marine organisms - and their stored nutrients - out of the water every year. Scientists say these activities are tied to the loss of important nutrients that help keep aquatic systems alive.



This observation gained traction when experts found that modern fishing <a href="https://www.earth.com/news/small-fish-species-are-the-big-catch-of-the-future/" target="_blank" rel="noreferrer noopener">habits</a> remove a significant share of these valuable elements from coastal and open-water habitats.



This research was led by Adrian Gonzalez Ortiz, who carried out this work while completing his master’s degree at <a href="https://www.usu.edu" target="_blank" rel="noreferrer noopener">Utah State University</a>. 



Gonzalez Ortiz teamed up with collaborators from the <a href="https://www.seaaroundus.org/" target="_blank" rel="noreferrer noopener">Sea Around Us</a> initiative and other institutions to analyze the chemicals stored in the bodies of commonly fished species.



<h2 class="wp-block-heading" id="h-fishing-shifts-ocean-nutrient-balance">Fishing shifts ocean nutrient balance</h2>



<a href="https://www.earth.com/news/the-hidden-consequences-of-catch-and-release-sport-fishing/" target="_blank" rel="noreferrer noopener">Fisheries</a> focus on certain species based on demand and convenience. A targeted approach can shift the balance of nutrients like carbon, nitrogen, and phosphorus, which are vital for marine food webs.



The researchers looked at landings across hundreds of locations worldwide. They uncovered patterns of nutrient removal that coincide with shifts in fish population structures in those regions.



<h2 class="wp-block-heading" id="h-fish-loss-weakens-nutrient-circulation">Fish loss weakens nutrient circulation</h2>



Estimates suggest more than 400 million tons of carbon alone were taken out through industrial catches over a span of many years. Even trace losses matter because fish play a part in passing these elements around the oceans.



“Fish and other marine organisms contain specific nutrients in their bodies,” said Gonzalez Ortiz. Capturing species that hold a lot of these elements may lower the supply that keeps ecosystems resilient.



<h2 class="wp-block-heading" id="h-mid-sized-fish-hold-more-nutrients">Mid-sized fish hold more nutrients</h2>



Medium-sized fish - often called <a href="https://www.researchgate.net/figure/What-is-a-mesopredator-In-this-hypothetical-ecosystem-wolves-are-the-apex-or-top_fig1_40738157" target="_blank" rel="noreferrer noopener">mesopredators</a> - have been singled out in the data. They act as hunters and prey, forming a key link for energy and nutrient movement across food webs.



“They store higher proportions of carbon, nitrogen and phosphorus, compared to other trophic groups,” said Dr. Trisha B. Atwood, associate professor at Utah State University.



These fish supply nutrient-rich prey to top-level predators, so removing them weakens both ecosystem function and future fishing <a href="https://www.earth.com/news/dark-vessels-most-industrial-fishing-activity-is-not-publicly-tracked/" target="_blank" rel="noreferrer noopener">prospects</a>.



<h2 class="wp-block-heading" id="h-impacts-on-different-regions">Impacts on different regions</h2>



The study tracked major changes in coastal zones and the open sea. Some coastal waters, such as parts of Southeast Asia, recorded striking extraction rates of nutrients over the past few decades.



In other areas, catches dipped after an initial boom, leading to fewer nutrients being taken out of those spots. This pattern sometimes pushed fishing fleets to head for new territories, where harvesting rose and nutrient removal climbed as well.



<h2 class="wp-block-heading" id="h-fish-removal-changes-ocean-productivity">Fish removal changes ocean productivity</h2>



Nutrient extraction is not just about the fish that people eat. By removing organisms with crucial roles in cycling phosphorus and nitrogen, fisheries can change local productivity in ways that might be overlooked.



“This not only negatively impacts the ecosystem but also fisheries,” said Dr. Atwood. Fish often bring vital substances to shallower waters, and taking them out removes those chemical supplies.



<h2 class="wp-block-heading" id="h-looking-at-possible-solutions">Looking at possible solutions</h2>



Experts are <a href="https://onlinelibrary.wiley.com/doi/10.1111/faf.12233" target="_blank" rel="noreferrer noopener">studying</a> how fisheries management might adapt to curb nutrient losses. Reducing overfishing and giving depleted stocks time to bounce back could help shore up the element flow in some regions.



Stricter catch limits or seasonal bans might lessen the strain on the most affected species. A balanced approach could keep vital trophic levels healthy and ensure that fishing can continue to support global demand.



<h2 class="wp-block-heading" id="h-cascading-effects-in-the-ocean">Cascading effects in the ocean</h2>



Some officials believe that new guidelines could protect fish populations and ocean nutrients. Others say that improved data collection on the basic chemistry of these creatures might spark better policies.



Changes in the nutrient makeup of the ocean can ripple through entire systems. That may impact everything from coral reefs to large migratory predators that need nutrient-packed meals.



<h2 class="wp-block-heading" id="h-research-can-guide-better-fish-policies">Research can guide better fish policies</h2>



Researchers are calling for more local studies that look at the fish in their habitats. That includes examining the full dietary range of predators and how smaller fish pass crucial chemicals around.



Most management rules focus on tonnage alone. Adding information about nutrient composition could paint a clearer picture and keep fisheries more sustainable over the long term.



<h2 class="wp-block-heading" id="h-measuring-success-in-fisheries">Measuring success in fisheries</h2>



Many governments are revisiting how they measure success in fisheries. Some are exploring integrated methods that consider not only the biomass of fish but also the distribution of chemical elements needed to keep the waters productive.



The research team hopes that updated approaches will spur better evaluations of ocean health. “Such a decrease in catches resulted in fisheries expanding to other ocean areas,” said Dr. Maria ‘Deng’ Palomares, manager of the Sea Around Us.



<h2 class="wp-block-heading" id="h-nutrients-and-long-term-ocean-health">Nutrients and long-term ocean health</h2>



Overlooking the chemical side of fishing could lead to unrecognized risks for marine environments. Solutions will likely require precise data, careful planning, and perhaps more restraint in how we exploit aquatic resources.



Stakeholders from the fishing industry and environmental groups acknowledge that balancing needs of people and nature is tricky. This evidence hints that a closer look at key nutrients may give leaders a sharper tool for preserving fish populations.



The study is published in the journal <a href="https://www.nature.com/articles/s43247-025-02218-z" target="_blank" rel="noreferrer noopener">Communications Earth &amp; Environment</a>.



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Fishing removes key nutrients from marine ecosystems

Industrial fishing has been a huge food source for decades....

A recent study suggests that satellite data can help protect 30% of ocean habitats in the Atlantic, while minimizing the disruption to shipping and fishing. The experts propose a practical way to meet global biodiversity targets without major sacrifices to economic activity.



The study was led by scientists at the Plymouth Marine Laboratory and the <a href="https://www.azti.es/" target="_blank" rel="noreferrer noopener">Centro de Investigación Marina y Alimentaria</a> (AZTI), supported by the European Space Agency (ESA).



<h2 class="wp-block-heading" id="h-seascapes-of-the-atlantic">Seascapes of the Atlantic </h2>



The researchers divided the Atlantic Ocean into distinct zones called seascapes. These are areas defined by their unique biological and physical traits.



Using satellite data, the experts were able to identify which zones are most important to biodiversity and could benefit from protection.



“We calculated the center point of each seascape and then determined that, by diverting marine traffic around rather than through <a href="https://www.earth.com/news/marine-protected-areas-fall-short-on-2030-biodiversity-targets/" target="_blank" rel="noreferrer noopener">protected areas</a>, we would achieve the UN’s goal of effectively protecting 30% of biodiversity, without heavy disruption to fishing and shipping,” explained Dr. Asier Anabitarte, a researcher in sustainable fishing technologies at AZTI.



<h2 class="wp-block-heading" id="h-using-satellites-to-protect-the-ocean">Using satellites to protect the ocean</h2>



The researchers used data from ESA’s Envisat and Copernicus Sentinel-3, as well as NASA and NOAA satellites, to track biological activity across different parts of the Atlantic. The team monitored organisms at all levels of the food chain - from microscopic phytoplankton to <a href="https://www.earth.com/news/satellite-tag-allows-long-term-tracking-of-whale-behavior/" target="_blank" rel="noreferrer noopener">whales</a> and other marine mammals.



Dr. Victor Martinez-Vicente, coordinator of the <a href="https://booms-project.org/" target="_blank" rel="noreferrer noopener">BOOMS project</a>, emphasized the importance of this method:



“The biogeography of the ocean has a long history, yet the novel application described in Asier’s paper is a demonstration of the potential that satellite-derived data has to support marine policy at the global scale,” said Dr. Martinez-Vicente.



The experts also mapped human activity - particularly shipping and <a href="https://www.earth.com/news/when-hunting-for-food-fulmars-follow-the-fishing-vessels/" target="_blank" rel="noreferrer noopener">fishing</a> - using data from the Automatic Identification System. This allowed them to overlay areas of heavy traffic with key habitats for species such as migratory birds, turtles, dolphins, and porpoises.



<h2 class="wp-block-heading" id="h-ocean-noise-affects-marine-habitats">Ocean noise affects marine habitats</h2>



The study highlights noise as one of the most damaging effects of human activity on the high seas. The constant hum of engines, <a href="https://www.earth.com/news/military-sonar-does-a-lot-more-damage-to-dolphins-than-previously-disclosed/" target="_blank" rel="noreferrer noopener">sonar</a>, and industrial equipment can severely disrupt life underwater.



“Noise pollution from human activity can be disruptive and damaging to marine habitats because it can affect how cetaceans communicate and hunt,” said Dr. Anabitarte. 



“However, it also affects fish populations by interfering with their ability to sense their environment, their ability to mate, communicate and avoid predators.”



The experts took into account the type of ship, how many were traveling through a given zone, and how much noise they produced. The analysis suggests that careful redirection of shipping lanes could reduce these impacts without adding major costs.



<h2 class="wp-block-heading" id="h-protecting-biodiversity-in-the-atlantic">Protecting biodiversity in the Atlantic </h2>



Currently, only about 1.45% of the high seas - the vast ocean areas outside any country’s jurisdiction - are officially protected.



Yet these waters make up roughly two-thirds of the world's oceans and are under increasing pressure from climate change, overfishing, and industrial development.



In June 2023, the United Nations adopted the Biodiversity Beyond National Jurisdiction agreement. Its aim is to protect 30% of the ocean by 2030, focusing on zones with rare and threatened species. But the lack of solid biodiversity data has made progress difficult.



Satellite technology can help protect these ocean zones by monitoring biodiversity across huge, remote areas and offering science-based recommendations.



<h2 class="wp-block-heading" id="h-smart-protection-shared-oceans">Smart protection, shared oceans</h2>



ESA Ocean Applications Scientist Marie-Helene Rio, who served as the technical officer for the project, sees this study as a promising first step.



“By protecting at least 30% of each seascape with activity lanes is a good starting point for high seas protection, which can be redefined later based on the presence of rare species or key habitats and socioeconomic factors agreed with stakeholders within a systematic spatial planning approach,” said Rio.



Dr. Anabitarte noted that other impacts from shipping and fishing lanes on the high seas should be considered in future studies, including <a href="https://www.earth.com/news/basking-sharks-are-exceptionally-vulnerable-to-ship-strikes/" target="_blank" rel="noreferrer noopener">vessel strikes</a> on mammals, as well as consequences of fishing such as seafloor damage, accidental loss of species, and litter.



This approach - using data to guide decisions - offers a realistic way to protect ocean life while still allowing human activity to continue. Ultimately, the model may help us meet international conservation goals without choosing between nature and progress.



The research was part of ESA’s Science for Society Biodiversity in the Open Ocean: Mapping, Monitoring and Modeling (BOOMS) project.



The&nbsp;study is published in the journal <a href="https://www.sciencedirect.com/science/article/abs/pii/S0025326X25002516" target="_blank" rel="noreferrer noopener">Marine Pollution Bulletin</a>. 



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Satellite data could help protect 30% of Atlantic ocean habitats

A recent study suggests that satellite data can help protect...

If you've ever watched songbirds squabble at a backyard feeder, you've seen a small glimpse of the competition animals face for limited resources. 



While some species seem to be constantly at odds, others - even those that appear quite similar - manage to coexist in surprising harmony.



For decades, a classic theory from the field of ecology has suggested that forest-dwelling <a href="https://www.earth.com/news/two-genes-are-responsible-for-the-rapid-diversification-of-warblers/" target="_blank" rel="noreferrer noopener">warblers</a> share trees by using different parts of them. 



Now, a new study adds a modern twist to that idea and shows it may be more complicated than it seems.



<h2 class="wp-block-heading" id="h-revisiting-a-classic-idea">Revisiting a classic idea </h2>



The research, conducted by scientists at <a href="https://www.psu.edu/" target="_blank" rel="noreferrer noopener">Penn State</a> and the American Bird Conservancy, revisits an influential idea that was first proposed by ecologist Robert MacArthur in the 1950s.



MacArthur observed that several species of warblers could live in the same tree without crowding each other out, simply by <a href="https://www.earth.com/news/birds-social-networks-greatly-influence-their-food-choices/" target="_blank" rel="noreferrer noopener">foraging</a> in different zones - some near the trunk, others at the tips of branches, and at varying heights.



This concept has been a staple in biology textbooks ever since. But thanks to DNA analysis and decades of fieldwork, the new study suggests that the story goes deeper.



<h2 class="wp-block-heading" id="h-a-close-look-at-species-interactions">A close look at species interactions </h2>



Study co-author David Toews is the Louis Martarano Career Development Professor of Biology in the Penn State Eberly College of Science.



“MacArthur suggested that we needed to look more closely at species interactions. We wanted to revisit this idea with modern technology, using molecular methods and an evolutionary perspective that weren’t available in MacArthur’s time," explained Professor Toews.



"This allowed us to not only directly quantify their diet, but also better understand how warblers are partitioning their habitat and how what we see today may have been shaped by competition over the warbler’s evolutionary history.”



<h2 class="wp-block-heading" id="h-analyzing-bird-competition">Analyzing bird competition </h2>



The team observed 13 warbler species that nest in northeastern New York forests during the summer. 



Over 20 years, the researchers tracked where in the trees each bird preferred to forage - how high up they searched, how dense the foliage was, and how close they stayed to the trunk.



The experts also collected fecal samples during five breeding seasons to analyze what the birds were eating.



Using a technique called fecal meta-barcoding, they could extract insect DNA to identify prey species. Alongside this, they studied the physical traits of each bird, including size and beak shape, using public databases.



<h2 class="wp-block-heading" id="h-songbird-foraging-behaviors">Songbird foraging behaviors </h2>



The findings showed that each bird species did indeed forage in slightly different ways. "The implication from MacArthur’s study is that, if the birds are foraging in different areas of the tree, then they are eating different things,” said Professor Toews.



“MacArthur tried to test this using data from his colleagues, who attempted to analyze fragments of insects from stomach contents, but this was biased toward fragments that weren’t digested, and they were extremely difficult to identify."



"Now, we can extract DNA from fecal samples and use a technique called fecal meta-barcoding to see which insect species have been eaten by birds.”



<h2 class="wp-block-heading" id="h-pressures-over-evolutionary-timescales">Pressures over evolutionary timescales </h2>



While the birds' movements and strategies differed clearly - smaller species tended to hover more, and those with longer legs stayed closer to the ground - their diets were surprisingly similar.



Eliot Miller, BirdsPlus Index Manager at the American Bird Conservancy, noted that a bird's and shape are products of many pressures operating over evolutionary timescales.



“But numerous studies, including our own, show that chief amongst these pressures is foraging behavior,” said Miller.



<h2 class="wp-block-heading" id="h-subtle-differences-in-songbird-diets">Subtle differences in songbird diets</h2>



The DNA analysis revealed that although the warblers fed on thousands of insect and spider species, there was a great deal of overlap in their <a href="https://www.earth.com/news/coffee-plantations-limit-native-birds-diets/" target="_blank" rel="noreferrer noopener">diets</a>.



“The birds we studied collectively consumed thousands of arthropod species, and there was a considerable amount of overlap in their diets,” said Professor Toews.



“The differences in diet were quite subtle, and we found that closely related species had more similar diets. This suggests that MacArthur’s emphasis on diet may have been partially misplaced, though the general idea of portioning their resources by foraging in different parts of the trees is sound.”



Many birds were simply taking advantage of what was available. Professor Toews noted that more than 75% of fecal samples contained the most common insect in the area, a snipefly, and more than half of the samples contained a common, invasive leaf weevil.



This kind of opportunistic feeding may suggest that while <a href="https://www.earth.com/news/competition-limits-the-ranges-of-tropical-mountain-birds/" target="_blank" rel="noreferrer noopener">competition</a> shaped the songbirds’ physical traits and foraging strategies, diet may not have played as strong a role in pushing species apart.



<h2 class="wp-block-heading" id="h-bird-migration-and-competition">Bird migration and competition </h2>



“Because of the notable differences in foraging behavior, we believe that competition has shaped how these species forage today, as well as how they evolved to forage over evolutionary time,” Miller said. 



“But we don’t see many differences in diet, so it’s likely that other forces may have more directly influenced warbler evolution. It is worth noting that these birds migrate to Central and South America over the winter, so competition for resources in those locations as well as the stress of <a href="https://www.earth.com/news/songbirds-benefit-from-social-networks-during-migration/" target="_blank" rel="noreferrer noopener">migration</a> may also shape the traits we see today.”



The researchers are planning future studies to look more closely at what warblers eat during their time in the tropics and how the nutritional value of their food might vary. 



This could offer deeper insight into how competition and migration shape these songbirds beyond their breeding grounds.



<h2 class="wp-block-heading" id="h-a-more-nuanced-view-of-coexistence">A more nuanced view of coexistence</h2>



“MacArthur was right in that these warblers are partitioning their habitat in fine ways, but it’s a little more complex than he originally thought,” said Professor Toews.



“People often observe competitive interactions between species at their bird feeders, and studies like this show how these kinds of interactions that happened hundreds or thousands of years ago can shape the species we see today.”



The takeaway? Even birds that seem to get along may be playing out a long, slow competition - one that stretches across trees, continents, and generations.



The full study was published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rsbl.2025.0001" target="_blank" rel="noreferrer noopener">Biology Letters</a>.



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Bird competition: How warblers share trees without fighting

If you've ever watched songbirds squabble at a backyard feeder,...

Sea slugs are famous for their unusual shapes and colors, but their habit of shining during daylight is still surprising to many. They refuse to hide and instead display bright spots, stripes, or swirling hues that some predators quickly learn to avoid.



Dr. Cedric van den Berg from the <a href="https://www.uq.edu.au" target="_blank" rel="noreferrer noopener">University of Queensland</a> and his team examined 45 species of <a href="https://ocean.si.edu/ocean-life/invertebrates/collage-nudibranch-colors" target="_blank" rel="noreferrer noopener">nudibranch slugs</a> to see how color patterns might work as predator deterrents. 



The researchers looked at how certain slugs appear to <a href="https://www.earth.com/news/sea-slugs-use-sunlight-to-survive-just-like-plants/" target="_blank" rel="noreferrer noopener">fish</a> with trichromatic vision, finding that being active under bright conditions helps highlight toxic or stinging defenses.



<h2 class="wp-block-heading" id="h-sea-slugs-flash-bright-colors">Sea slugs flash bright colors</h2>



“Sea <a href="https://www.earth.com/news/mystery-mollusk-glowing-sea-slug-found-in-the-deep-sea/" target="_blank" rel="noreferrer noopener">slugs</a> use bright, contrasting color patterns to send messages to potential predators like ‘Don’t eat me, I’m poisonous,’” noted Dr. van den Berg.



Sea slugs often rely on <a href="https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/aposematism" target="_blank" rel="noreferrer noopener">aposematic signals</a>, which are bright or bold patterns that suggest they’re not worth a predator’s time.&nbsp;



Animals with chemical defenses, such as irritating toxins or stinging cells, appear to flaunt thick stripes or glowing spots. 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/04/sea-slug_Risbecia-apolegma_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/sea-slug_Risbecia-apolegma_1s.webp" alt="Colorful sea slug, species name Risbecia apolegma" class="wp-image-1966961"/></a><figcaption class="wp-element-caption">Colorful sea slug, species name Risbecia apolegma. Click image to enlarge.</figcaption></figure>



Those colors can look intense to fish that rely on sight, so it’s a clear communication strategy in well-lit environments.



Nocturnal slugs, by comparison, usually stick to calmer patterns. Their prey time is after sunset, so they’re less likely to advertise threats that won’t be easily seen in the dark.



<h2 class="wp-block-heading" id="h-fish-avoid-slugs-that-shine-in-sunlight">Fish avoid slugs that shine in sunlight</h2>



The researchers used specialized imaging to simulate how these patterns register with a fish’s eyes. A quick flash of white or dark stripes against a colorful background can make a <a href="https://www.earth.com/news/inspired-by-sea-slugs-microneedles-could-transform-health-monitoring/" target="_blank" rel="noreferrer noopener">fish</a> think twice about an easy meal.



“We can even use the fingerprint to successfully classify the daytime activity of almost 90% of all the species we looked at,” said Dr. van den Berg. This suggests a strong link between how slugs look and when they move around each day.



Some slugs have more than just bright colors at their disposal. They also pack potent chemicals that might taste awful or damage a predator’s tissues on contact.



<h2 class="wp-block-heading" id="h-sunlight-strengthens-sea-slug-colors">Sunlight strengthens sea slug colors </h2>



Light is crucial for these color patterns to send the right message. Bold outlines or high-contrast spots fade in dim conditions, but under direct sun, the same hues scream for attention.



A fish that tries nibbling a slug with toxins might get a nasty mouthful. That experience can teach predators to avoid the next brightly spotted slug they see.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/04/sea-slug_nudibranch_Favorinus-mirabilis_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/sea-slug_nudibranch_Favorinus-mirabilis_1s.webp" alt="Color nudibranch sea slug, species name Favorinus mirabilis" class="wp-image-1966959"/></a><figcaption class="wp-element-caption">Color nudibranch sea slug, species name Favorinus mirabilis. Click image to enlarge.</figcaption></figure>



Scientists call these patterns and body outlines essential parts of the slug’s warning display. It’s like wearing a vibrant outfit that signals danger to those who might otherwise bite first and ask questions later.



<h2 class="wp-block-heading" id="h-toxic-chemicals-and-warning-colors">Toxic chemicals and warning colors</h2>



These creatures store or produce toxic compounds, depending on their diet and species-specific <a href="https://www.earth.com/news/largest-predator-prey-feast-ever-seen-in-the-ocean-enormous-quickly-altered-food-chain/" target="_blank" rel="noreferrer noopener">traits</a>. A few absorb nasty elements from what they eat, then load them into stinging cells on their backs.



Not all sea slugs rely on chemical deterrents, though. Some have mild or no toxins and instead hide or blend with the environment at night.



Other slugs team multiple strategies. One group even uses <a href="http://www.seaslugforum.net/showall/biolumin" target="_blank" rel="noreferrer noopener">bioluminescent flashes</a>, but that tends to happen if they get harassed after dark.



<h2 class="wp-block-heading" id="h-colors-as-survival-strategies">Colors as survival strategies</h2>



Colorful warnings are common in reef environments filled with fish that spot <a href="https://www.whoi.edu/know-your-ocean/did-you-know/why-are-corals-so-colorful/" target="_blank" rel="noreferrer noopener">bright objects</a> from many angles. Sea slugs are only one example of creatures that play this card.



These slugs aren’t alone in teaching predators to step back. Some marine animals sport bright polka dots or bold stripes, but the principle is the same: let attackers know a nasty surprise awaits them.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/04/sea-slugs_Costasiella-Kuroshimae-nudibranch_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/sea-slugs_Costasiella-Kuroshimae-nudibranch_1s.webp" alt="Colorful sea slug nudibrance, species name Costasiella Kuroshimae" class="wp-image-1966963"/></a><figcaption class="wp-element-caption">Colorful sea slug nudibrance, species name Costasiella Kuroshimae. Click image to enlarge.</figcaption></figure>



Biologists are keen to see how these patterns might shift as <a href="https://www.earth.com/news/seamounts-are-gathering-hubs-for-ocean-predators/" target="_blank" rel="noreferrer noopener">ocean</a> conditions change. If waters get murkier or fish populations decline, it could alter what signals remain effective.



<h2 class="wp-block-heading" id="h-bold-colors-help-sea-slugs-survive">Bold colors help sea slugs survive</h2>



Future research may reveal more about how brightness levels in shallow waters affect slug survival. Since some species rely on colorful hints to broadcast their poison, changes in light could tilt the scales in favor of camouflage instead.



Learning more about daytime patterns might also explain how certain toxins develop. If a slug’s flashy outfit reliably stops attacks, chemical defenses might grow stronger over time.



It’s a balancing act. Slugs can’t be so bold that hungry predators want to test them, yet they have to be bold enough for the signal to stand out in daylight.



Studying sea slugs provides a glimpse of how clever visual signals shape daily routines. Their reliance on sunshine to amplify threats is a neat twist on survival.



Most species in this research project seem to embrace the idea of risking daylight for the payoff of a loud warning. The few that prefer darkness skip the bright stripes and trust stealth to keep them off the menu.



The study is published in the <a href="https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2656.70036" target="_blank" rel="noreferrer noopener">Journal of Animal Ecology</a>.



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Sea slugs are very tiny, but they might also be the most beautiful creatures in the seas

Sea slugs are famous for their unusual shapes and colors,...

Bonobos are known for gentle interactions, yet recent work suggests they might be less tolerant when rewards are split unequally. Researchers set out to see if these apes would walk away from deals that favored a partner and shortchanged them.



This insight emerges from the work of first author Kia Radovanović from <a href="https://www.uu.nl/en" target="_blank" rel="noreferrer noopener">Utrecht University</a>. A team at the Max Planck Institute for Evolutionary Anthropology collaborated on these trials to gauge bonobos’ <a href="https://www.earth.com/news/world-bonobo-day-a-celebration-of-love-peace-and-conservation/" target="_blank" rel="noreferrer noopener">reactions</a> to unequal treats.



<h2 class="wp-block-heading" id="h-bonobos-recognize-unfair-rewards-and-protest">Bonobos recognize unfair rewards and protest</h2>



Some experts use the phrase <a href="https://www.behavioraleconomics.com/resources/mini-encyclopedia-of-be/inequity-aversion/" target="_blank" rel="noreferrer noopener">inequity aversion</a> for patterns in animals that refuse to cooperate when they get a raw deal. Human <a href="https://academic.oup.com/qje/article-abstract/114/3/817/1848113?redirectedFrom=fulltext" target="_blank" rel="noreferrer noopener">studies</a> have noted how people often protest if someone else is given better benefits for the same effort.



Bonobos share close ties with people on the <a href="https://evolution-outreach.biomedcentral.com/articles/10.1007/s12052-008-0035-x" target="_blank" rel="noreferrer noopener">evolutionary tree</a>. Their social lives revolve around interactions where resources and tasks are commonly exchanged. 



When tested in a token-exchange setting, they faced a scenario where one <a href="https://www.earth.com/news/bonobo-communication-shares-many-structural-similarities-with-human-language/" target="_blank" rel="noreferrer noopener">participant</a> got a higher-value treat, while the other settled for a lesser option.



<h2 class="wp-block-heading" id="h-why-turn-down-free-snacks">Why turn down free snacks?</h2>



“We found that bonobos more often refused to participate when faced with inequitable rewards,” said Radovanović. This outcome goes against the idea that they simply expect the same tasty morsel and quit if disappointed.



There were instances where an automated contraption handed out the treats. Bonobos avoided interacting if the gadget gave them a lower reward, yet spared a friend something tastier. 



This trend did not appear to stem from dissatisfaction with the human caretaker but instead from the unequal handouts themselves.



<h2 class="wp-block-heading" id="h-how-much-unfairness-can-bonobos-tolerate">How much unfairness can bonobos tolerate?</h2>



Cooperative behavior in this species is often viewed as a key characteristic. Some pairs seemed more tolerant of small imbalances, especially if they had strong social <a href="https://www.earth.com/news/bonobos-are-more-endangered-than-previously-known/" target="_blank" rel="noreferrer noopener">bonds</a>.



The closer pairs of bonobos sometimes accepted the mismatch without walking away. These differences in how each ape responds hint that personal relationships might play a role in how big a difference in goodies they are willing to allow.



<h2 class="wp-block-heading" id="h-bonobos-chimps-and-unfair-rewards">Bonobos, chimps, and unfair rewards</h2>



Unlike bonobos, chimpanzees in similar tests often show refusal <a href="https://www.earth.com/news/orphaned-bonobos-can-regain-social-skills-and-empathy/" target="_blank" rel="noreferrer noopener">patterns</a> that seem tied more to the person handing out the food than to fairness itself. 



When chimpanzees received lesser rewards, they reacted more strongly if the distributor was a human instead of a machine. That suggests they may be expressing frustration with the person, not necessarily protesting the unfairness of the trade.



Bonobos didn’t follow that same pattern. Their refusals were strongest when a machine was involved and their partner still got something better. 



This detail sets them apart and raises the possibility that bonobos might have developed a clearer internal barometer for fairness, while chimpanzees may lean more toward social expectations or experimenter-based cues.



<h2 class="wp-block-heading" id="h-more-tests-to-explore-fairness-in-apes">More tests to explore fairness in apes</h2>



Fair-minded behavior might develop from social structures that value harmony.



"This study provides new insights into how fairness may have evolved, but further research is needed,” said Daniel Haun, Director at the <a href="https://www.mpg.de/de" target="_blank" rel="noreferrer noopener">Max Planck Institute for Evolutionary Anthropology</a>.



Researchers continue to plan follow-up tasks that offer group-based <a href="https://www.earth.com/news/bonobos-are-thriving-in-salonga-national-park/" target="_blank" rel="noreferrer noopener">activities</a> and broader test groups. They hope to see whether living conditions or group composition shape each individual’s perception of what is or is not an acceptable share.



<h2 class="wp-block-heading" id="h-bonobos-value-rewards-and-fairness">Bonobos value rewards and fairness</h2>



People once believed that only humans show strong objections when rewards are lopsided. Bonobo evidence suggests some apes may notice these imbalances too. 



This pattern could reinforce cooperation over time, because no one wants to keep playing with a partner who always gets the bigger prize.



These observations add a new perspective on how a sense of fair play might have taken shape in diverse primate lineages. Focusing on bonobos’ responses could clarify the complexities of social ties and resource division in living groups.



<h2 class="wp-block-heading" id="h-can-bonobos-fix-unfairness-themselves">Can bonobos fix unfairness themselves?</h2>



Researchers propose testing different tasks where bonobos can actively equalize outcomes. Deeper analysis may also reveal if other apes respond similarly in varied settings. 



Questions remain about how environment and familiarity influence the readiness to leave an unfair arrangement.



If bonobos keep showing that they can detect and reject unequal rewards, the idea of fairness in non-human species grows stronger. That could shift how we talk about morality and ethical conduct in the broader animal kingdom.



The study is published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rspb.2024.2873" target="_blank" rel="noreferrer noopener">Proceedings of the Royal Society B: Biological Sciences</a>.



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Bonobos say no to unfair trades, even if it costs rewards

Bonobos are known for gentle interactions, yet recent work suggests...

Conservation scientists often reassure themselves with a simple rule of thumb: species that live over huge swaths of territory and boast large populations are usually safer from extinction than creatures confined to small patches of habitat. 



However, a new global analysis of roughly 1,500 bird species has revealed that there's no comfortable rule when it comes to climate change.



The study, led by the <a href="https://www.utexas.edu/" target="_blank" rel="noreferrer noopener">University of Texas at Austin</a>, shows that a wide geographic footprint can hide an unexpectedly narrow dependence on climate. In a warming world, that hidden fragility could make certain familiar birds surprisingly vulnerable.



“Because that region is so big, species that occupy it tend to have large populations and large geographic range sizes - two characteristics that are often associated with lower <a href="https://www.earth.com/news/bird-extinctions-shatter-the-harmonious-balance-of-nature/" target="_blank" rel="noreferrer noopener">extinction</a> risks,” explained Carlos Botero, an associate professor of integrative biology and senior author of the study.



“The problem here is that because many of those species are adapted to a very narrow range of climates, those seemingly large populations can be quite <a href="https://www.earth.com/news/hundreds-of-bird-species-face-extinction-risks-in-the-neotropics/" target="_blank" rel="noreferrer noopener">susceptible</a> to collapse when climate patterns begin to change.”



<h2 class="wp-block-heading" id="h-a-paradox-from-the-arctic"><a></a>A paradox from the Arctic</h2>



One of the clearest examples comes from the Arctic, where a single broad climatic regime stretches across thousands of miles. The Bohemian waxwing is emblematic: its breeding distribution spans an immense arc from Scandinavia to Alaska.



Yet the Arctic’s uniform environment means that the waxwing’s entire life cycle is tied to cold temperatures and consistent snow cover. Even minor warming or shifts in precipitation could push the species outside its comfort zone - no matter how far it can fly within that chilly belt.



In their analysis, Botero’s team contrasted the waxwing with the chestnut-crowned laughingthrush. The laughingthrush is restricted to a sliver of montane forest in Nepal, Bhutan, and neighboring parts of Asia - an area a fraction of the waxwing’s extent.



But the Himalayan foothills expose that small-ranged bird to a wider palette of temperatures and <a href="https://www.earth.com/news/extreme-rainfall-increases-as-a-direct-result-of-global-warming/" target="_blank" rel="noreferrer noopener">rainfall</a> patterns throughout the year. The laughingthrush therefore occupies a broader “climate niche,” potentially giving it more room to maneuver as conditions shift.



<h2 class="wp-block-heading" id="h-bird-brains-and-climate-specialization">Bird brains and climate specialization</h2>



The surprises did not stop with range maps. Analyses also revealed an unexpected relationship between brain size and climate flexibility. 



Larger-brained birds, long celebrated for their resourcefulness, tended to be the very species most tightly wedded to specific climate regimes. “Larger brain sizes correlate with more flexible behavior, so `big-brained birds are usually expected to be more adaptable,” Botero said. 



“However, it turns out that many big-brained birds are climate specialists - meaning that they have evolved to thrive in very particular climate types and may therefore also be more <a href="https://www.earth.com/news/some-birds-are-more-at-risk-from-climate-change-than-others/" target="_blank" rel="noreferrer noopener">vulnerable</a> to climate change than we expected.”



Why would an animal capable of problem-solving and tool use paint itself into a narrow climatic corner? Botero and coauthor João Fabrício Mota Rodrigues (now at <a href="https://unicamp.br/" target="_blank" rel="noreferrer noopener">Brazil’s University of Campinas</a>) suspect that cognitive prowess helps species exploit highly specific environments with great efficiency. 



Over evolutionary time, that specialization can lead to tight physiological tolerances - exactly the trait that becomes risky when the planet’s thermostat creeps upward.



<h2 class="wp-block-heading" id="h-building-a-two-dimensional-climate-map"><a></a>Building a two-dimensional climate map</h2>



To quantify each species’ niche, the team merged two huge datasets. First came detailed range maps created from hundreds of thousands of sightings submitted by volunteer birders to the <a href="https://ebird.org/home" target="_blank" rel="noreferrer noopener">eBird</a> platform. 



Second, the researchers developed a simplified, yet powerful, climate classification that captures two axes of environmental hardship. The first axis - “temperature harshness” - rises as places become colder, more variable, and less predictable. 



The second - “xeric harshness” - ratchets upward with drier, more erratic rainfall. Plotting Earth’s land areas across those twin axes produced a two-dimensional climate space. 



Points near the center represent benign zones: warm, moist, and seasonally steady. Farther out lie the extremes: parched deserts, storm-prone tropics, or frigid <a href="https://www.earth.com/news/how-will-changing-tundra-landscapes-affect-earths-climate/" target="_blank" rel="noreferrer noopener">tundra</a>. 



By overlaying each bird’s distribution onto that grid, the researchers measured how much of the climate space the species actually uses. A small ellipse located at one edge of the diagram signals trouble. 



Birds confined to that limited set of conditions may find it hard to track shifting isotherms or precipitation belts. Conversely, a large swath cutting across multiple quadrants suggests climatic breadth and, potentially, resilience.



<h2 class="wp-block-heading" id="h-hidden-interactions-hidden-risks"><a></a>Hidden interactions, hidden risks</h2>



The latest study adds to a growing chorus urging conservation planners to reconsider single-factor threat lists. 



“We need to stop looking at individual risk factors in isolation, but evaluate how these complex factors combine,” Botero emphasized. “Sometimes, it is the unexpected interactions that matter most.”



Indeed, a species can check all the traditional “safe” boxes - huge range, big population, high intelligence - yet still sit on a climatic knife-edge. Arctic breeders are just one illustration. 



Tropical forest birds with large brains and tight humidity requirements could face similar hazards if droughts intensify. Even desert specialists might falter if rainfall becomes too unpredictable for reliable breeding.



<h2 class="wp-block-heading" id="h-citizen-science-and-big-picture-insights">Citizen science and big-picture insights</h2>



According to Rodrigues, the analysis was made possible by citizen scientists. Data derived from eBird gave the experts an unprecedented global snapshot.



Without hundreds of thousands of observers recording where they saw even the most common species, they couldn’t have mapped climate niches with this precision. Such an approach is quickly becoming a backbone of ecological forecasting. 



By harnessing real-time, geo-tagged records from amateurs, researchers can update models as species ranges expand, contract, or fragment - often faster than traditional field surveys could manage.



<h2 class="wp-block-heading" id="h-smarter-species-conservation">Smarter species conservation</h2>



Recognizing climate specialization where none was suspected may reshape conservation priorities. Agencies often triage limited funds toward charismatic, range-restricted species. 



But Botero’s work suggests that some cosmopolitan birds deserve equal attention, precisely because their “bigness” masks a slender climatic lifeline. Future investigations will probe whether similar patterns hold for mammals, reptiles, or <a href="https://www.earth.com/news/amphibians-are-being-pushed-beyond-their-heat-limits/" target="_blank" rel="noreferrer noopener">amphibians</a>. 



For now, the message is clear: size - of range, of population, of brain - does not guarantee safety. In a rapidly changing climate, ecological nuance matters. 



Understanding that nuance could spell the difference between proactive protection and costly rescue missions when numbers suddenly plummet. As policymakers craft strategies for the coming decades, studies like this remind us that vulnerability isn’t always where we expect it. 



Sometimes it hides beneath vast northern skies, in flocks that seem abundant - until the weather shifts just a little too far, and the invisible boundaries of their climate niches close in.



The study is published in the journal <a href="https://www.nature.com/articles/s41467-025-58815-1" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



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Big brains and wide ranges can't save birds from climate change

Conservation scientists often reassure themselves with a simple rule of...

Strolling a familiar beach and stumbling upon a relic from the age of dinosaurs sounds like pure fantasy, yet that is exactly what happened on England’s west coast. 



A stretch of shoreline below Somerset’s crumbling cliffs yielded a bone so large that it challenged everything we thought we knew about prehistoric marine reptiles. 



The fossil - a lower jaw more than 6½ feet long - promised a creature leagues beyond anything alive today. The find dated to around 202 million years ago, slotting it into the turbulent final chapter of the <a href="https://www.earth.com/news/triassic-fossils-shed-new-light-on-ancient-ecosystems/" target="_blank" rel="noreferrer noopener">Triassic Period</a>.



At that time, much of what is now Britain lay beneath a warm, shallow sea patrolled by meat‑eating giants. Their reign ended in a mass extinction, leaving only scattered bones to whisper their stories - until now.



<h2 class="wp-block-heading" id="h-ruby-and-ichthyotitan-severnensis">Ruby and Ichthyotitan severnensis</h2>



Back in late&nbsp;May&nbsp;2020, 11‑year‑old Ruby&nbsp;Reynolds and her father, Justin, headed for the mudflats of Blue&nbsp;Anchor, looking for fossils. 



Justin spotted a four‑inch scrap of bone, “bigger than any piece of bone I'd ever found before,” he recalls. 



Ruby wandered on and unearthed a second fragment twice that size. “It was just sort of lying there,” she says. “I was just happy, really.” Their excitement would soon ripple far beyond the shoreline.



Word reached paleontologist Dean&nbsp;Lomax, who holds posts at both the <a href="https://www.bristol.ac.uk/" target="_blank" rel="noreferrer noopener">University of Bristol</a> and the <a href="https://www.manchester.ac.uk/" target="_blank" rel="noreferrer noopener">University of Manchester</a>. He recognized echoes of another Somerset specimen lifted in&nbsp;2016 by local collector Paul&nbsp;de&nbsp;la&nbsp;Salle. 



That earlier jaw fragment, called a surangular, came together from several chunks that, Lomax remembers, “fit together perfectly like an ancient prehistoric jigsaw puzzle.”



Ruby's discovery was eventually named Ichthyotitan severnensis, which literally translates to “giant fish lizard from the Severn.” 



<h2 class="wp-block-heading" id="h-ichthyotitan-severnensis-was-a-true-monster">Ichthyotitan severnensis was a true monster</h2>



The first bone’s eroded edges left scientists yearning for more. “It suggests that it was from something unusual and exceedingly large,”&nbsp;Lomax says. 



He and colleagues published a cautious description, but could not pin down the creature’s identity. “What we'd hoped for - we kept our fingers crossed - we hoped that maybe more specimens would come to light in the future,” he admits.



Ruby and Justin’s beachside haul delivered exactly that. After they emailed photographs - “Hey, Dr.&nbsp;Lomax - we think we've found another one of your giant ichthyosaur jawbones”&nbsp;-&nbsp;the research team raced to Somerset. 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/04/Ichthyotitan-severnensis_largest-marine-reptile_jawbone-comparison_credit-Dean-Lomax_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/Ichthyotitan-severnensis_largest-marine-reptile_jawbone-comparison_credit-Dean-Lomax_1s.webp" alt="Photograph of the nearly complete giant jawbone, along with a comparison with the 2018 bone (middle and bottom) found by Paul de la Salle. Credit: Dr. Dean Lomax" class="wp-image-1966376"/></a><figcaption class="wp-element-caption">Photograph of the nearly complete giant jawbone, along with a comparison with the 2018 bone (middle and bottom) found by Paul de la Salle. Click image to enlarge. Credit: Dr. Dean Lomax</figcaption></figure>



“Of course, they were quite right,” Lomax says. “They correctly identified these sections of bone as belonging to an ichthyosaur.” 



Fresh collecting trips recovered still more pieces, leaving nearly two‑thirds of the jaw intact and in excellent shape.



<h2 class="wp-block-heading" id="h-matching-two-huge-jawbones">Matching two huge jawbones</h2>



Comparison of the two Somerset jaws revealed striking similarities. Because both turned up in the same rock layer and displayed uncommon internal bone textures, the team concluded they belonged to one new species. 



In a paper published in PLOS&nbsp;ONE, they proposed that the full animal stretched roughly&nbsp;82&nbsp;feet - “genuinely enormous, about the length of a blue whale,” Lomax says.



Scale alone does not grant a place in the record books; scientists also scrutinized microscopic structures inside the bone. 



These matched the odd pattern seen in other <a href="https://www.earth.com/news/fiona-the-ichthyosaur-was-preserved-for-millions-of-years-after-a-landslide/" target="_blank" rel="noreferrer noopener">super‑sized ichthyosaurs</a>, nudging researchers to suggest these reptiles grew in a way unlike most of their scaly kin.



Whether Ichthyotitan severnensis belonged to the shastasaur group - the clade that once produced Triassic leviathans across the globe - remains uncertain until a complete skeleton surfaces.



<h2 class="wp-block-heading" id="h-sizing-up-ichthyotitan">Sizing up Ichthyotitan</h2>



The Somerset titan likely carried a lighter, more streamlined frame suited for open‑ocean cruising. Its jawbone alone outsizes a grown person by several feet. 



If its proportions followed relatives such as Shonisaurus, the skull may have spanned over&nbsp;10&nbsp;feet, with paddle‑shaped flippers stretching wider than a living‑room couch.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/04/Ichthyotitan-severnensis_largest-marine-reptile_illustration_credit-Gabriel-Ugueto_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/Ichthyotitan-severnensis_largest-marine-reptile_illustration_credit-Gabriel-Ugueto_1s.webp" alt="A giant pair of swimming Ichthyotitan severnensis. Credit: Gabriel Ugueto" class="wp-image-1966374"/></a><figcaption class="wp-element-caption">A giant pair of swimming Ichthyotitan severnensis. Click image to enlarge. Credit: Gabriel Ugueto</figcaption></figure>



Growth to such dimensions suggests a sea rich in food and free of bigger predators. Massive schools of squid‑like cephalopods thrived in Triassic waters, offering a banquet to long‑roaming hunters. 



Stable‑isotope evidence from other ichthyosaur bones hints at warm‑blooded metabolisms, which, paired with live birth and sleek bodies, let them fill whale‑like niches long before mammals took the plunge.



<h2 class="wp-block-heading" id="h-life-in-the-triassic-was-incredible">Life in the Triassic was incredible</h2>



The Triassic often flies under the radar next to the Jurassic’s celebrity dinosaurs, yet biomechanist Kelsey&nbsp;Stilson calls it “a really weird time.” 



Continents had only just fused into <a href="https://www.earth.com/earthpedia-articles/supercontinents-101-pannotia-gondwana-and-pangea/" target="_blank" rel="noreferrer noopener">Pangaea</a>, monsoon‑driven climates swung from drought to deluge, and both early dinosaurs and mammals were fresh on the scene. 



“There were things that we can't even possibly imagine in the past,”&nbsp;Stilson adds. “But we can get little hints, and this is one little hint at this larger picture of evolution on Earth.”



That broader picture shows ichthyosaurs rising fast after the end‑Permian mass extinction, then peaking in size just before the next cataclysm. 



“No marine reptile ever reached such gigantic sizes ever again,”&nbsp;Lomax notes. Later Jurassic and Cretaceous ichthyosaurs shrank, perhaps pushed aside by changing oceans and by the emergence of other reptilian predators such as <a href="https://www.earth.com/news/dinosaurs-were-not-the-only-animals-that-grew-fast-during-the-mesozoic/" target="_blank" rel="noreferrer noopener">pliosaurs</a> and <a href="https://www.earth.com/news/mosasaurs-had-fierce-survival-strategies-including-cannibalism/" target="_blank" rel="noreferrer noopener">mosasaurs</a>.



<h2 class="wp-block-heading" id="h-whales-replaced-ichthyotitan-severnensis">Whales replaced Ichthyotitan severnensis</h2>



The last ichthyosaurs disappeared about&nbsp;94&nbsp;million&nbsp;years ago, vacating the top spot in marine food webs. 



That gap lingered until hoofed mammals ventured back to sea some&nbsp;50&nbsp;million&nbsp;years ago, setting whales on their own path to titanic proportions. 



The repeat story - big fish‑shaped predators evolving from land‑going ancestors - highlights how evolutionary solutions recur when similar ecological opportunities arise.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/04/Ichthyotitan-severnensis_largest-marine-reptile_beached_credit-Sergey-Krasovskiy_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/Ichthyotitan-severnensis_largest-marine-reptile_beached_credit-Sergey-Krasovskiy_1s.webp" alt="A washed-up Ichthyotitan severnensis carcass on the beach. Credit: Sergey Krasovskiy." class="wp-image-1966372"/></a><figcaption class="wp-element-caption">A washed-up Ichthyotitan severnensis carcass on the beach. Click image to enlarge. Credit: Sergey Krasovskiy.</figcaption></figure>



Modern blue whales now stretch beyond&nbsp;100&nbsp;feet and can weigh&nbsp;180&nbsp;tons, yet, length for length, they share the open ocean’s realm with Ichthyotitan in the fossil archives. 



Their stories highlight the ocean’s capacity to <a href="https://www.earth.com/news/trachelosaurus-fischeri-worlds-oldest-long-necked-marine-reptile-rediscovered/" target="_blank" rel="noreferrer noopener">nurture behemoths</a> when food is ample and competition sparse.



<h2 class="wp-block-heading" id="h-what-happens-next">What happens next?</h2>



Somerset’s cliffs erode a little more each winter. Storms tear at ancient mudstones, exposing new fossils overnight. 



“This research has been ongoing for almost eight years. It is quite remarkable to think that gigantic, blue whale‑sized ichthyosaurs were swimming in the oceans around what was the UK during the Triassic Period," Lomax concluded.



"These jawbones provide tantalizing evidence that perhaps one day a complete skull or skeleton of one of these giants might be found. You never know.”



Beachcombers like Ruby and Justin now scan those shores with renewed purpose. Their lucky strike reminds us that scientific breakthroughs sometimes hide in plain sight, waiting for curious eyes and a little persistence. 



The sea claimed Ichthyotitan severnensis long before humans walked Europe, yet its story shows that even after millions of years, a coast‑side ramble can rewrite natural history.



The full study was published in the journal <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0300289" target="_blank" rel="noreferrer noopener">PLOS ONE</a>.



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Largest marine reptile ever known to exist was discovered by an 11-year-old girl

Strolling a familiar beach and stumbling upon a relic from...

Not all birds migrate. Some stay put. Some, like the Lesser Goldfinch, go where conditions allow them to thrive. These tiny songbirds, once mostly limited to the Southwest, are now appearing in increasing numbers far north of their traditional range. What’s more surprising is the speed and consistency of this shift.



New research published in the journal Ornithology offers fresh insight into this striking expansion. It’s a story that touches climate, urbanization, and our relationship with <a href="https://www.earth.com/news/earth-day-2025-what-were-really-fighting-for/" target="_blank" rel="noreferrer noopener">nature</a>. It’s also a reminder that sometimes, change isn’t just visible - it’s audible in birdsong that wasn’t there before.



<h2 class="wp-block-heading" id="h-goldfinch-surge-across-the-northwest">Goldfinch surge across the Northwest</h2>



The study comes from a collaboration between Washington State University (<a href="https://www.google.com/search?client=safari&amp;rls=en&amp;q=Washington+State+University&amp;ie=UTF-8&amp;oe=UTF-8" target="_blank" rel="noreferrer noopener">WSU</a>) and the <a href="https://www.birds.cornell.edu/home/" target="_blank" rel="noreferrer noopener">Cornell Lab of Ornithology</a>. 



The researchers relied on observations submitted by everyday birdwatchers through two Cornell initiatives: Project <a href="https://feederwatch.org" target="_blank" rel="noreferrer noopener">FeederWatch</a> and <a href="https://ebird.org/home" target="_blank" rel="noreferrer noopener">eBird</a>. These programs collect real-time data, creating a massive network of people watching and logging birds.



The analysis revealed that Lesser Goldfinch populations have grown dramatically between 2012 and 2022.



In Washington, the number rose by 110.5%. Idaho saw a 66.3% increase, while Oregon had a more modest but still notable 16.9%. These numbers suggest more than a seasonal visit. They point to full-scale colonization.



<h2 class="wp-block-heading" id="h-personal-experience-sparks-a-major-discovery">Personal experience sparks a major discovery</h2>



For Mason Maron, the lead author of the study, the change wasn’t just academic - it was personal.



"When I first arrived in eastern Washington I was pretty new to birding and Lesser Goldfinches were new to me. I was seeing groups of 30 or 40 at a time and I sort of assumed that was normal, until I started meeting local birders who said, '10 years ago we never had Lesser Goldfinches,’ so I started to investigate what was going on,” said Maron.



That moment of curiosity eventually led to this landmark study. It highlights how individual <a href="https://www.earth.com/news/world-water-day-2025-preserving-glaciers-protecting-our-future/" target="_blank" rel="noreferrer noopener">experiences</a> can turn into powerful scientific discoveries, especially when supported by large-scale data.



<h2 class="wp-block-heading" id="h-goldfinches-are-moving-with-intention">Goldfinches are moving with intention </h2>



Lesser Goldfinches are not just randomly moving. The researchers discovered clear <a href="https://www.earth.com/news/global-warming-is-accelerating-beyond-control-as-co2-levels-rise/" target="_blank" rel="noreferrer noopener">patterns</a>.



"What's fascinating is how these birds are adapting to human-modified landscapes," said Maron. 



"They're not just moving north randomly - they're following specific corridors, particularly along rivers and through urban areas where temperatures are warmer and where both native and non-native plants provide food."



These zones offer warmer microclimates and a diverse range of food sources, making them ideal for expansion. The urban heat island effect plays a role too, buffering the birds from harsher northern winters.



<h2 class="wp-block-heading" id="h-factors-linked-to-goldfinch-expansion">Factors linked to goldfinch expansion </h2>



The study pinpointed four <a href="https://www.earth.com/news/climate-change-is-constantly-reshuffling-earths-species/" target="_blank" rel="noreferrer noopener">environmental factors</a> most closely linked with the birds’ expansion. Maximum annual temperature and rainfall topped the list. Urban development and proximity to rivers also played strong roles.



Although these birds often appear at backyard feeders, Maron and his team were surprised by one finding: bird feeders don’t make a meaningful difference in helping establish new populations.



"There wasn't really a significant association with bird feeders," Maron said. The first individuals to arrive in a new area might go to feeders because they provide easy to access food, but Maron explained that “it's not going to be enough to sustain a whole population."



<h2 class="wp-block-heading" id="h-rivers-act-as-goldfinch-highways-nbsp">Rivers act as goldfinch highways&nbsp;</h2>



Rivers stood out as essential channels. They don’t just provide water. They also bring life in the form of seeds, insects, and disturbed soil - perfect conditions for opportunistic birds like the Lesser Goldfinch.



"These rivers carry weedy plants and seeds really well," said Maron. "We, as people, like to live along the river, so we disturb the soil and that really creates this sort of chain of the perfect conditions for them."



This overlap between human settlement and bird habitat is not just a coincidence. It shows how species can align their movements with our built environments.



<h2 class="wp-block-heading" id="h-stability-in-new-regions">Stability in new regions</h2>



It’s one thing for a species to explore new territory. It’s another to settle in and grow. The researchers found that once goldfinches arrive, they tend to stay - and even thrive.



"Our results are suggestive of this species being able to pretty rapidly colonize new <a href="https://www.earth.com/news/climate-change-earth-energy-imbalance-temperature-rise/" target="_blank" rel="noreferrer noopener">environments</a>," said Jordan Boersma, co-author and research associate at the Cornell Lab of Ornithology. 



"It's not just that Lesser Goldfinches are exploring these new areas…they are moving in and typically turning into stable populations or even increasing populations."



This kind of success story is rare. Many species that encounter environmental change don’t survive, much less expand.



<h2 class="wp-block-heading" id="h-southward-decline-mirrors-northward-growth">Southward decline mirrors Northward growth</h2>



Even as they thrive in the north, Lesser Goldfinches appear to be declining in the south. The Cornell Lab’s eBird Status and Trends project notes losses in the species’ traditional southwestern strongholds.



This suggests that the northward shift may not be a pure gain. Instead, it reflects an underlying pressure - possibly driven by heat, drought, or changing vegetation - that is making the southern part of their range less hospitable.



<h2 class="wp-block-heading" id="h-a-nuanced-view-of-adaptation">A nuanced view of adaptation</h2>



While this study shows how adaptable the Lesser Goldfinch can be, the researchers urge caution in drawing wide conclusions. Most species are not so fortunate.



"What it really shows is that we know a lot of species are declining and struggling because of these changes. Some species can survive and adapt and do better, but it's not necessarily a trade-off," said Maron.



Adaptability varies. For every bird that expands, others may retreat or vanish. It’s a reminder that environmental change rarely distributes benefits equally.



<h2 class="wp-block-heading" id="h-goldfinches-moving-in-response-to-change">Goldfinches moving in response to change</h2>



Boersma sees deeper meaning in the goldfinch’s journey. "This species has proven remarkably adaptable to environmental change," he said. 



"Understanding how birds like the Lesser Goldfinch respond to climate change and urbanization helps us predict how other species might also be impacted."



Birds are sensitive indicators of ecological shifts. Watching them closely reveals how ecosystems are changing - sometimes before we notice anything else.



<h2 class="wp-block-heading" id="h-power-of-public-participation">Power of public participation</h2>



None of this research would exist without everyday people recording what they see in their yards, parks, and neighborhoods. Through Project FeederWatch and eBird, citizens contribute millions of observations that build into something far greater than the sum of its parts.



"When we understand how wildlife responds to environmental change, we're better equipped to make informed decisions about urban planning, conservation, and climate adaptation," said Maron.



The goldfinches remind us that even small birds can carry big messages - if we’re paying attention.



The study is published in the journal <a href="https://academic.oup.com/auk/advance-article-abstract/doi/10.1093/ornithology/ukaf013/8116731?redirectedFrom=fulltext" target="_blank" rel="noreferrer noopener">Ornithology</a>.



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Goldfinches are moving to new homes in unusual places

Not all birds migrate. Some stay put. Some, like the...

species in Sphincterochilidae

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