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

The idea that what we eat shapes how we sleep is catching on fast. A new six-month clinical trial puts the humble avocado at the center of that discussion. 



The research, led by Dr. Kristina Petersen of <a href="https://www.worldcampus.psu.edu/?cid=CPC39865&amp;gad_source=1&amp;gad_campaignid=216632423&amp;gclid=Cj0KCQjwu7TCBhCYARIsAM_S3Njk18_xKLXHwaS2Zu0LDF2JIvkEKY6cuE1XfwJLezsIvCB_JPOl65kaAiMzEALw_wcB" target="_blank" rel="noreferrer noopener">Penn State University</a>, was focused on 969 adults with larger waistlines. The study revealed that individuals who ate one avocado each day reported about 30 extra minutes of nightly sleep compared with the control group. 



Heart doctors now treat solid sleep health as seriously as blood pressure. According to the <a href="https://www.cdc.gov/heart-disease/about/sleep-and-heart-health.html" target="_blank" rel="noreferrer noopener">Centers for Disease Control and Prevention</a>, adults who regularly get fewer than seven hours have higher odds of heart attack and stroke. 



The <a href="https://www.heart.org/en/healthy-living/healthy-lifestyle/lifes-essential-8" target="_blank" rel="noreferrer noopener">American Heart Association</a> includes sleep in its Life's Essential 8 checklist, alongside diet, exercise, and nicotine avoidance.



<h2 class="wp-block-heading" id="h-why-avocado-nutrients-matter-for-sleep-nbsp">Why avocado nutrients matter for sleep&nbsp;</h2>



According to the researchers, one-third of a medium avocado delivers 13 milligrams of <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC2908021/" target="_blank" rel="noreferrer noopener">tryptophan</a>, the amino acid the body uses to make melatonin. It also brings 45 µg of <a href="https://ods.od.nih.gov/factsheets/Folate-HealthProfessional/" target="_blank" rel="noreferrer noopener">folate</a> and 15 milligrams of <a href="https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/" target="_blank" rel="noreferrer noopener">magnesium</a>, which are both tied to smoother circadian rhythms.&nbsp;



Each serving supplies three grams of fiber and five grams of <a href="https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/fats/monounsaturated-fats" target="_blank" rel="noreferrer noopener">monounsaturated fat</a>, nutrients that can trim LDL cholesterol and support steady blood sugar, two issues that often disturb sleep.



<h2 class="wp-block-heading" id="h-avocado-improves-sleep-and-diet">Avocado improves sleep and diet</h2>



Volunteers in the Habitual Diet and Avocado Trial (<a href="https://pubmed.ncbi.nlm.nih.gov/34496276/" target="_blank" rel="noreferrer noopener">HAT</a>) were randomized to eat either one large Hass avocado <a href="https://www.ahajournals.org/doi/10.1161/JAHA.124.039130" target="_blank" rel="noreferrer noopener">daily</a> or fewer than two avocados per month for twenty-six weeks.



Compliance stayed high, about 88 % of the avocado group reported eating the full fruit on recall days, yet their overall calories barely changed, suggesting people swapped rather than piled on food. 



The avocado group scored three points higher on the diet component of Life’s Essential 8 and showed modest reductions in LDL cholesterol, echoing earlier single-food trials.



“Sleep is emerging as a key lifestyle factor in heart health, and this study invites us to consider how nutrition - and <a href="https://www.earth.com/news/global-diet-shifts-the-hidden-costs-of-what-we-eat/" target="_blank" rel="noreferrer noopener">foods</a> like avocado - can play a role in improving it,” said Dr. Petersen. Self-reported sleep increased from an average of 6.4 to nearly 7.0 hours per night.&nbsp;



Heart health depends on a variety of factors. While no one <a href="https://www.earth.com/news/what-methane-in-your-gut-says-about-your-diet/" target="_blank" rel="noreferrer noopener">food</a> can solve everything, avocados provide several nutrients that contribute to different areas of cardiovascular well-being.



<h2 class="wp-block-heading" id="h-how-avocado-may-influence-sleep">How avocado may influence sleep</h2>



Magnesium <a href="https://pubmed.ncbi.nlm.nih.gov/39252819/" target="_blank" rel="noreferrer noopener">supplements</a> can deepen slow-wave sleep in adults with insomnia, and similar benefits appear when the mineral comes from food.



Tryptophan-rich evening snacks have been <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC2654999/" target="_blank" rel="noreferrer noopener">shown</a> to lift nighttime melatonin and lower restlessness in lab studies. Avocados supply both compounds in a heart-healthy package.



The fruit’s steady stream of potassium may also help keep blood pressure dips that occur during deep sleep within a <a href="https://www.earth.com/news/what-you-eat-can-literally-change-the-world/" target="_blank" rel="noreferrer noopener">healthy</a> range, though that mechanism still lacks direct trial evidence.



<h2 class="wp-block-heading" id="h-avocados-may-influence-hormones">Avocados may influence hormones</h2>



Emerging <a href="https://www.maxapress.com/article/doi/10.48130/FMR-2023-0013" target="_blank" rel="noreferrer noopener">research</a> also hints that avocados may influence hormonal balance, particularly cortisol and insulin - two key players in sleep and cardiovascular health. 



The monounsaturated fats in avocados have been shown to support insulin sensitivity and reduce inflammation, both of which can contribute to more restful sleep and improved heart health.



Cortisol, the body’s primary stress hormone, naturally dips at night to prepare us for sleep. Some <a href="https://www.ncbi.nlm.nih.gov/books/NBK326737/" target="_blank" rel="noreferrer noopener">studies</a> suggest that nutrient-dense, fat-rich foods like avocados may help regulate the timing and magnitude of these dips, potentially smoothing the transition to deeper sleep cycles.



<h2 class="wp-block-heading" id="h-diet-sleep-and-cardiovascular-links">Diet, sleep, and cardiovascular links</h2>



The study also showed that eating avocados daily improved overall <a href="https://www.earth.com/news/what-protein-packed-diets-are-really-doing-to-your-gut/" target="_blank" rel="noreferrer noopener">diet</a> quality, which is a foundational pillar in Life’s Essential 8. 



A better diet has cascading effects, not just on cholesterol and glucose, but on how the body regulates stress, hormones, and metabolism, all of which feed back into sleep patterns.



While the exact biological link between avocado nutrients and sleep isn't fully mapped, researchers believe the combination of healthy fats, fiber, and micronutrients may support more stable blood sugar and calm the nervous system, factors that are tied to sleep duration and quality.



<h2 class="wp-block-heading" id="h-future-research-directions">Future research directions </h2>



Because sleep was not the primary endpoint, the researchers relied on questionnaires instead of wearable trackers. 



Future trials that collect objective sleep stages and timing could confirm whether avocado nutrients directly lengthen restorative phases like <a href="https://www.health.harvard.edu/staying-healthy/rem-sleep-what-is-it-why-is-it-important-and-how-can-you-get-more-of-it" target="_blank" rel="noreferrer noopener">REM</a> sleep.



The study group already had elevated waistlines, so the results may not translate to leaner adults or children. Researchers also want to see if pairing avocados with exercise or weight-loss plans produces bigger gains on the full Life’s Essential 8 score.



<h2 class="wp-block-heading" id="h-simple-tips-for-daily-life">Simple tips for daily life</h2>



Swap the late-night cookie for half an avocado on whole-grain toast sprinkled with pumpkin seeds. The mix pairs healthy fat with extra magnesium and tryptophan. 



Keep ripe avocados on the counter and the rest in the fridge to maintain freshness throughout the week. A squeeze of lemon slows browning when you store the second half.



If you take blood-thinning medication, remember that avocados are high in <a href="https://nutritionsource.hsph.harvard.edu/vitamin-k/" target="_blank" rel="noreferrer noopener">vitamin K</a>, and it's important to discuss major diet changes with your clinician first. Adding a single food will not erase poor sleep hygiene, but it can be a good start. 



The study is published in the <a href="https://www.ahajournals.org/doi/10.1161/JAHA.124.039130" target="_blank" rel="noreferrer noopener">Journal of the American Heart Association</a>.



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Want better sleep? Try eating an avocado daily

The idea that what we eat shapes how we sleep...

Carbon pollution in the atmosphere is already causing dangerous changes to the climate. Cutting greenhouse gas emissions is not enough to keep the planet within safe temperature limits. 



Carbon dioxide removal (CDR) strategies aim to slow climate warning by removing CO2 pollution from the atmosphere. An in-depth analysis explains why the job cannot fall on machines alone. 



Plants, soils, and other ecosystems have a part to play in carbon dioxide removal, and this help is urgently needed.



<h2 class="wp-block-heading" id="h-nature-technology-and-co2-removal">Nature, technology, and CO2 removal</h2>



“We must rapidly reduce the production of new <a href="https://www.earth.com/news/greenhouse-gas-emissions-reach-another-all-time-high/" target="_blank" rel="noreferrer noopener">greenhouse gas emissions</a> worldwide. At the same time, we must also remove and store excess carbon already polluting the atmosphere," said Charlotte Streck of the <a href="https://www.uni-potsdam.de/en/university-of-potsdam" target="_blank" rel="noreferrer noopener">University of Potsdam</a>.



Streck noted that in recent years, innovative high-tech CDR companies have introduced promising solutions for capturing carbon. 



However, these solutions are still in research and development stages, and they are not yet proven at the scale needed, she added.



“At the same time, it’s well established that <a href="https://www.earth.com/news/mixed-forests-with-many-tree-species-are-more-effective-at-carbon-storage/" target="_blank" rel="noreferrer noopener">forests</a> and other ecosystems are effective at storing carbon - while also providing clean air and water, safeguarding biodiversity and keeping the planet cool. We must embrace both high-tech and natural methods of CDR to succeed," said Streck.



<h2 class="wp-block-heading" id="h-nature-based-carbon-removal">Nature-based carbon removal</h2>



Matthew Brander of the <a href="https://www.business-school.ed.ac.uk/" target="_blank" rel="noreferrer noopener">University of Edinburgh</a> Business School explained that nature-based and engineered carbon dioxide removal can be deployed synergistically.



“Engineered novel CDR methods offer higher durability and lower reversal risks. However, conventional nature-based CDR methods that rely on storing carbon in vegetation and soil are the most immediately deployable methods at scale, and costs are comparatively low," said Brander.



"It’s clear that high-tech and natural CDR methods can complement - not compete with - one another.”



Peter Ellis of <a href="https://www.nature.org/en-us/" target="_blank" rel="noreferrer noopener">The Nature Conservancy</a> pointed out that engineered CDR is extremely expensive and will require huge amounts of cheap renewable energy, along with years of investment in research and development, before it’s ready to scale.



“In contrast, nature-based CDR is cheap and powered by photosynthesis, which has been in research and development in efficient self-replicating prototypes called plants for 3 billion years,” he added.



<h2 class="wp-block-heading" id="h-defining-carbon-dioxide-removal">Defining carbon dioxide removal </h2>



The Intergovernmental Panel on Climate Change (IPCC) defines carbon dioxide removal (CDR) as any human activity that removes carbon dioxide from the atmosphere and stores it securely - whether in rocks, soils, oceans, or long-lived products.



These methods differ based on how the CO₂ is captured, such as through photosynthesis, chemical processes, or other reactions.



The removal methods also depend on where the carbon is stored and how long it remains stored - whether in living biomass, mineralized form, or deep ocean sediments.



<h2 class="wp-block-heading" id="h-the-best-path-for-co2-removal">The best path for CO2 removal</h2>



No single <a href="https://www.earth.com/news/ocean-based-carbon-dioxide-removal-may-not-be-effective/" target="_blank" rel="noreferrer noopener">CDR option</a> checks every box for cost, speed, scale, and long-term storage. The analysis shows that matching methods to specific needs - and mixing several of them - is the safest path forward.



High-tech systems can lock carbon away for centuries once they work at scale. Yet they are young, expensive, and energy-hungry. 



Natural pathways, such as restoring forests or rebuilding soils, are ready today, cost less, and offer side benefits like habitat and clean water. The downside is that trees can burn, pests can spread, and <a href="https://www.earth.com/news/lightning-near-the-north-pole-signals-major-climate-shifts/" target="_blank" rel="noreferrer noopener">climate shifts</a> can undo the gains.



<h2 class="wp-block-heading" id="h-why-a-mixed-approach-works-best">Why a mixed approach works best</h2>



CDR planners often talk about “reversal risk” - the chance that stored carbon could leak back into the atmosphere. For example, injecting CO₂ into rock is risky at first, before it hardens into minerals. 



Forests, meanwhile, can be lost to fire, pests, or land use changes before they reach full maturity. That’s why success depends on mixing solutions so the weaknesses of one are offset by the strengths of another.



“Policymakers and investors should encourage a balanced, comprehensive approach to investments in both nature- and tech-based CDR,” said Streck. 



“A balanced portfolio mitigates against risks of any one strategy and is most likely to make meaningful contributions toward achieving <a href="https://www.earth.com/news/paris-agreement-which-countries-are-honoring-their-pledges/" target="_blank" rel="noreferrer noopener">Paris Agreement</a> goals.”



Currently, most investment is going toward new technologies that haven’t yet scaled. 



But by also supporting proven nature-based projects, we can remove carbon right away - while giving engineers the time to develop more durable, high-tech options for the future.



And there’s no time to waste. Climate math is unforgiving, and every year of delay makes the job harder. 



By pairing shovels and sensors with seeds and soil, we can cut emissions, store carbon, and offer future generations a better shot at a stable climate.



The full study was published in the journal <a href="https://www.tandfonline.com/doi/full/10.1080/14693062.2025.2501267" target="_blank" rel="noreferrer noopener">Climate Policy</a>.



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We cannot rely on technology alone for carbon dioxide removal

Carbon pollution in the atmosphere is already causing dangerous changes...

Most people go through life feeling glued to their skin. Hands move, feet follow, and the world stays in front of their eyes. Yet a surprising slice of the population has reported slipping loose, hovering a few feet up, and seeing their own body from the outside. 



The phenomenon is called an out-of-body experience (OBE), and its meaning has long puzzled science.



Researchers estimate that anywhere from 5 to 20 percent of global adults have touched this odd territory at least once.



Such accounts crop up in emergency rooms, <a href="https://www.earth.com/news/psilocybin-deeply-enhances-meditation-insights/" target="_blank" rel="noreferrer noopener">meditation retreats</a>, and even on living-room couches during an afternoon nap. 



Pilots under high G-forces have logged them, and neurologists have induced similar sensations in lab volunteers by tickling a small patch of brain behind the right ear. 



<h2 class="wp-block-heading" id="h-obes-the-strangest-trip-of-all">OBEs: The strangest trip of all</h2>



OBEs share a common script: sight and touch split. People feel <a href="https://www.earth.com/news/the-human-brain-adapts-to-weightlessness-in-space/" target="_blank" rel="noreferrer noopener">weightless</a>, hear the room dimly, and watch themselves from above. 



Laboratory work links the effect to the temporoparietal junction, the brain’s traffic circle for balance, vision, and the sense of owning a body. 



When signals there clash - because of <a href="https://www.earth.com/news/stress-eats-away-our-brains-cognitive-defenses/" target="_blank" rel="noreferrer noopener">stress</a>, epilepsy, lack of oxygen, or a virtual-reality headset - the mind may decide to leave its usual seat.



Historical texts show that monks, shamans, and soldiers have all written about brief departures. Modern imaging backs them up: the body stays put. 



Yet cardiology monitors sometimes register sudden drops in heart rate during an OBE, hinting at a reflex that calms the nervous system when things feel too intense.



<h2 class="wp-block-heading" id="h-surveying-the-floaters">Surveying the floaters</h2>



After years of scattered anecdotes, a fresh survey from the <a href="https://med.virginia.edu/" target="_blank" rel="noreferrer noopener">University of Virginia</a> School of Medicine takes stock. The team surveyed more than 500 adults who were certain they had floated. 



Four out of five said it happened between one and four times; the rest reported at least five departures. Most first left their body in childhood.



Nearly three-quarters called the event spontaneous. Nine percent linked it to <a href="https://www.earth.com/news/ancient-arabians-burned-harmal-plants-to-heal-and-protect/" target="_blank" rel="noreferrer noopener">psychoactive compounds</a>, while 8.2 percent said meditation, visualization, or similar practices did the trick. Only 0.7 percent pointed to hypnosis.



<h2 class="wp-block-heading" id="h-obes-and-the-stress-connection">OBEs and the stress connection</h2>



The new data reveal a heavy shadow of <a href="https://www.earth.com/news/child-maltreatment-triples-the-risk-of-substance-use/" target="_blank" rel="noreferrer noopener">early hardship</a>. Many participants recalled medical trauma or abusive homes. 



They also carried more mental-health diagnoses than peers who had never floated, and the likelihood of a diagnosis increased the longer it had been since that first OBE. 



Many people who’ve had out-of-body experiences (OBEs) worry there’s something wrong with them and keep quiet out of fear of being judged. 



“Unfortunately, many mental-health professionals still view these experiences in the same way,” said Weiler, a neuroscientist with UVA’s <a href="https://med.virginia.edu/perceptual-studies/" target="_blank" rel="noreferrer noopener">Division of Perceptual Studies</a>.



Weiler’s team found that individuals who’ve had OBEs often report poorer mental health than those who haven’t. 



However, the researchers believe OBEs may act as “a coping mechanism in response to past trauma,” rather than a sign of illness. 



They urge clinicians to reconsider how they view these experiences and to meet them with “greater openness and sensitivity.”



<h2 class="wp-block-heading" id="h-gains-from-leaving-the-body">Gains from leaving the body</h2>



The survey also tracked unexpected upsides. Fifty-five percent of participants said the experience changed their life; seventy-one percent felt a lasting benefit; and forty percent called it the greatest thing that had ever happened to them. 



Many described a lighter view of death, deeper calm, and a sharper sense of connection to other people. These reports match earlier studies in hospital patients, where OBEs sometimes eased anxiety after major surgery.



While stress can tip the brain into an OBE, curiosity clearly plays a role. Some volunteers used <a href="https://www.earth.com/news/wim-hof-method-helps-fight-stress-inflammation/" target="_blank" rel="noreferrer noopener">breathing exercises</a> or sleep-onset tricks to nudge the event on purpose, chasing the mental clarity they felt hovering in the air. 



Scientists studying <a href="https://www.earth.com/news/meditation-slows-biological-aging-at-the-molecular-level/" target="_blank" rel="noreferrer noopener">meditation</a> note similar patterns of detachment during deep practice, though the body stays motionless on the cushion.



<h2 class="wp-block-heading" id="h-clinical-implications">Clinical implications</h2>



“This view,” the researchers write, “shifts the focus from causation to the possibility that OBEs may also emerge as a consequence - a coping strategy for navigating difficult or traumatic experiences.” 



Their argument moves attention away from the spectacle of floating and toward the stress that often hides underneath. 



“If OBEs are understood not as symptoms of pathology but as coping mechanisms - especially in response to trauma - this reframing can lead to several important shifts in clinical practice, research, and public understanding,” Weiler explained.



“Ultimately, we hope to reduce the stigma around this topic, encourage help-seeking, and build community and resilience among experiencers.”



Therapists who meet an OBE client might soon ask different questions: not “Why did you split from your body?” but “What weight were you carrying when you launched?” 



Workshops for <a href="https://www.earth.com/news/witnessing-trauma-may-cause-ptsd-in-a-different-way/" target="_blank" rel="noreferrer noopener">PTSD</a> already teach grounding techniques, yet some clinicians now explore whether guided imagery that safely mimics an OBE can loosen painful memories without triggering panic.



<h2 class="wp-block-heading" id="h-where-do-obes-go-from-here">Where do OBEs go from here?</h2>



Portable brain scanners and motion-tracking beds promise sharper views of the moment liftoff begins. Researchers aim to map the split-second traffic between inner ear, skin sensors, and sight that lets the self drift. 



Others wonder whether the heart’s slowdown during OBEs could teach new ways to manage panic attacks or chronic pain.



For now, the lesson is plain: when the mind steps outside, it may be staging a clever retreat, buying time until life feels safe again. 



Listening to the story behind that retreat might help bring both mind and body back into easy conversation.



The full study was published in the journal <a href="https://linkinghub.elsevier.com/retrieve/pii/S0191886925002545" target="_blank" rel="noreferrer noopener">Personality and Individual Differences</a>.



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When the mind leaves the body - Scientists investigate the incredible phenomenon of OBEs

Most people go through life feeling glued to their skin....

In science fiction movies like Frankenstein and Re-Animator, human bodies are revived, existing in a strange state between life and death. While this may seem like pure fantasy, a recent study suggests that a “third state” of existence might actually be present in modern biology.&nbsp;



According to the researchers, this third state occurs when the cells of a dead organism continue to function after its death, sometimes gaining new capabilities they never had while the organism was alive.



<h2 class="wp-block-heading" id="h-third-state-beyond-traditional-boundaries-nbsp">"Third state" beyond traditional boundaries&nbsp;</h2>



Amazingly, if further experiments on cells from dead animals -- including humans -- prove this ability, it could even challenge the definition of legal death.&nbsp;



The study, published in the journal <a href="https://journals.physiology.org/doi/abs/10.1152/physiol.00004.2024" target="_blank" rel="noreferrer noopener">Physiology</a>, was led by Professor Peter Noble from the <a href="https://www.washington.edu/" target="_blank" rel="noreferrer noopener">University of Washington in Seattle</a> and Alex Pozhitkov from the <a href="https://www.cityofhope.org/" target="_blank" rel="noreferrer noopener">City of Hope National Medical Center</a> in Duarte, California.



“Life and death are traditionally viewed as opposites,” the researchers wrote in an article for The Conversation. 



“But the emergence of new <a href="https://www.earth.com/news/past-snowball-earth-conditions-drove-evolution-complex-multicellular-life/" target="_blank" rel="noreferrer noopener">multicellular life-forms</a> from the cells of a dead organism introduces a 'third state' that lies beyond the traditional boundaries of life and death.”



<h2 class="wp-block-heading" id="h-cells-come-alive-after-death">Cells come alive after death</h2>



In this third state, certain cells -- when given nutrients, oxygen, bioelectricity, or biochemical signals -- have the capacity to transform into new multicellular organisms, exhibiting new functions even after <a href="https://www.earth.com/news/millions-of-near-death-experiences-validated-by-new-study/" target="_blank" rel="noreferrer noopener">death</a>.



The researchers reviewed recent studies showing the incredible capability of cells to reorganize and take on new forms after the death of the organism.&nbsp;



<h2 class="wp-block-heading" id="h-skin-cells-become-xenobots-nbsp">Skin cells become xenobots&nbsp;</h2>



In 2021, U.S. scientists found that <a href="https://www.earth.com/news/scientists-have-bioprinted-fully-functional-human-skin/" target="_blank" rel="noreferrer noopener">skin cells</a> from dead frogs could adapt to a lab environment and spontaneously form multicellular organisms -- actual living machines called “xenobots.”&nbsp;



While most machines are constructed from materials like steel and plastic, which can degrade or break over time and have harmful side effects, living systems made from self-renewing and biocompatible materials would avoid those negative consequences.



These <a href="https://www.earth.com/news/ai-can-design-and-build-walking-robots-in-seconds/" target="_blank" rel="noreferrer noopener">xenobots</a> displayed behaviors far beyond their original biological purpose, using hair-like structures called cilia to move through their surroundings.



They also proved adept at material collection, information recording, self-healing, and limited replication.



<h2 class="wp-block-heading" id="h-lung-cells-become-anthrobots-nbsp">Lung cells become anthrobots&nbsp;</h2>



Similarly, other researchers discovered that human lung cells could self-organize into tiny multicellular organisms known as “anthrobots.”&nbsp;



Anthrobots range in size from the width of a human hair to the tip of a sharpened pencil. Remarkably, these multicellular robots are designed to self-assemble and have demonstrated a pronounced healing effect on other cells.



<a href="https://www.earth.com/news/anthrobots-scientists-create-tiny-biological-robots-from-human-cells/" target="_blank" rel="noreferrer noopener">These anthrobots</a> could not only move independently but also repair themselves and heal damaged nerve cells nearby.



They have shown capabilities surpassing those of the xenobots, addressing critical questions about&nbsp;<a href="https://www.earth.com/news/engineered-proteins-can-record-cellular-memories/" target="_blank" rel="noreferrer noopener">cellular assembly</a>&nbsp;and cooperation in the body, and the potential for cells to be reassembled into different structures for varied functions.



<h2 class="wp-block-heading" id="h-cells-functioning-in-the-third-state">Cells functioning in the third state</h2>



The experts point to these examples as evidence of new cellular functions that don’t exist during life, illustrating cellular changes in unexpected ways.&nbsp;



However, how exactly these cells function in the third state after an organism dies remains a mystery. 



One possible explanation, reminiscent of Frankenstein-style ideas, involves a hidden system of “electrical circuits” that reanimate the cells.



These channels and pumps may generate electrical signals that allow cells to communicate and perform specific functions like growth and movement, shaping the structure of the new organism they form.



<h2 class="wp-block-heading" id="h-factors-that-influence-the-third-state-nbsp">Factors that influence the third state&nbsp;</h2>



Whether cells can enter this third state depends on several factors, including environmental conditions such as temperature and energy availability. 



Access to fuel and the ability to metabolize that energy also play a crucial role in whether cells can survive and continue functioning postmortem.



Other variables, like the organism’s age, health, sex, and species type, also influence whether cells can enter the third state. 



The research team suggests that these factors “shape the postmortem landscape” -- determining whether or not cells can persist in this unique state.



<h2 class="wp-block-heading" id="h-unexplored-frontiers-in-biology">Unexplored frontiers in biology</h2>



The research opens up “unexplored frontiers” in biology that could one day bring animal cells, and potentially human cells, into this third state.&nbsp;



However, whether this future will resemble something out of Re-Animator, where reanimated tissue leads to catastrophic consequences, remains to be seen. 



In the 1980s cult film, a medical student discovers how to bring human tissue back to life, with dire and violent results.



<h2 class="wp-block-heading" id="h-possibilities-for-innovative-treatments-nbsp">Possibilities for innovative treatments&nbsp;</h2>



This third state not only sheds light on the remarkable adaptability of cells, but also opens up possibilities for innovative <a href="https://www.earth.com/news/gene-regulation-controlling-cells-to-improve-medical-treatments/" target="_blank" rel="noreferrer noopener">treatments</a>.



For instance, anthrobots could be created from a person’s own living tissue to deliver medication without triggering an immune response.



Each Anthrobot starts as a single cell from an adult donor’s trachea, equipped with cilia that facilitate movement. 



Researchers at the New Jersey Institute of Technology (<a href="https://www.njit.edu/" target="_blank" rel="noreferrer noopener">NIJT</a>) developed conditions to maximize this motility, observing various shapes and movement types, marking a significant feature of this biorobotics platform.



These engineered anthrobots, when introduced into the body, could dissolve arterial plaque in patients with atherosclerosis or help clear excess mucus in those with cystic fibrosis.



They are biodegradable and safe, with a limited lifespan and strictly laboratory-bound existence, eliminating concerns of external exposure or uncontrolled proliferation.



<h2 class="wp-block-heading" id="h-transformative-potential-of-the-third-state">Transformative potential of the third state</h2>



Notably, these multicellular organisms have a limited life span, breaking down naturally after four to six weeks. This built-in “kill switch” prevents the risk of potentially harmful cell growth.



“This research has the potential to transform regenerative medicine, redefine legal death, and provide insights into life's physiological limits, paralleling inquiries in embryogenesis,” the authors concluded.&nbsp;



To sum it all up, gaining a deeper understanding of how certain cells can continue functioning and transform into multicellular organisms after an organism’s death, the "third state," holds great potential for advancing both personalized and preventive medicine. 



Stay tuned...this field of biology is getting very interesting, indeed.



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"Third state" of existence between life and death confirmed by scientists

In science fiction movies like Frankenstein and Re-Animator, human bodies...

Astronomers have recently captured a rare and remarkable image of a giant exoplanet in an unusually tilted planetary system just 60 light-years away.



Using NASA’s <a href="https://www.earth.com/news/webb-telescope-may-reveal-how-fast-the-universe-is-expanding/" target="_blank" rel="noreferrer noopener">James Webb Space Telescope</a>, researchers have directly observed 14 Herculis c - one of the coldest planets ever imaged. This observation offers new insights into the evolution and behavior of planets in systems unlike our own.



The findings mark a significant leap forward in our ability to detect and study cold, older exoplanets thanks to Webb’s infrared sensitivity and imaging tools.



<h2 class="wp-block-heading" id="h-14-herculis-c-comes-into-focus">'14 Herculis c' comes into focus</h2>



Only a small number of the nearly 6,000 known exoplanets have been directly imaged. Most of those tend to be blazing hot - often hundreds or even thousands of degrees Fahrenheit.



By contrast, 14 Herculis c is strikingly cold, with a temperature around 26 degrees Fahrenheit (or -3 degrees Celsius). The planet is also massive, estimated to weigh about seven times more than Jupiter.



William Balmer is co-first author of the new paper and a graduate student at <a href="https://www.jhu.edu/" target="_blank" rel="noreferrer noopener">Johns Hopkins University</a>.



“The colder an exoplanet, the harder it is to image, so this is a totally new regime of study that Webb has unlocked with its extreme sensitivity in the infrared,” he said.



“We are now able to add to the catalog of not just hot, young exoplanets imaged, but older exoplanets that are far colder than we’ve directly seen before Webb.”



Webb’s Near-Infrared Camera (NIRCam) captured the faint glow of 14 Herculis c, a planet orbiting a star much like our <a href="https://www.earth.com/news/widest-high-resolution-photo-of-the-sun-ever-captured-solar-orbiter/" target="_blank" rel="noreferrer noopener">Sun</a>.



The central star, 14 Herculis, is slightly smaller and cooler than the Sun but otherwise quite similar. The system’s outer planet now offers a vivid window into planetary physics.



<h2 class="wp-block-heading" id="h-planetary-system-in-disarray">Planetary system in disarray</h2>



What makes this system even more fascinating is its unusual orbital layout. The two known planets, 14 Herculis b and 14 Herculis c, do not orbit in the same flat plane like the planets in our <a href="https://www.earth.com/news/spiral-structure-discovered-at-the-edge-of-our-solar-system-oort-cloud/" target="_blank" rel="noreferrer noopener">solar system</a>.



Instead, their orbits are inclined about 40 degrees to each other, forming a tilted, crisscrossing dynamic around the star.



This extreme misalignment is the first of its kind ever seen in a directly imaged planetary system. The result is a gravitational tug-of-war as the two massive planets pull at each other while circling the star.



“The early evolution of our own solar system was dominated by the movement and pull of our own <a href="https://www.earth.com/news/jupiters-past-how-the-young-gas-giant-shaped-our-solar-system/" target="_blank" rel="noreferrer noopener">gas giants</a>,” Balmer said.



“They threw around <a href="https://www.earth.com/news/asteroid-that-once-threatened-earth-may-target-the-moon/" target="_blank" rel="noreferrer noopener">asteroids</a> and rearranged other planets. Here, we are seeing the aftermath of a more violent planetary crime scene. It reminds us that something similar could have happened to our own solar system. The outcomes for small planets like Earth are often dictated by much larger forces.”



One theory suggests that an early collision ejected a third planet, leaving the remaining two in skewed orbits.



<h2 class="wp-block-heading" id="h-webb-reveals-14-herculis-c-s-orbit">Webb reveals 14 Herculis c's orbit</h2>



Webb’s image does more than show a planet - it also reveals hints about its atmosphere and orbit. 



14 Herculis c orbits its star at a distance of about 1.4 billion miles, placing it between Saturn and Uranus in terms of location if it were in our solar system.



The planet’s orbit is highly elliptical - like a football - and closer to the star than earlier estimates suggested.



The researchers measured the planet’s brightness at a specific infrared wavelength - 4.4 microns - using Webb’s coronagraph. 



Combined with known data about the planet’s mass and the system’s age, the team expected the planet to be brighter at that wavelength - but it wasn’t.



“If a planet of a certain mass formed 4 billion years ago, then cooled over time because it doesn't have a source of energy keeping it warm, we can predict how hot it should be today,” said Daniella C. Bardalez Gagliuffi of <a href="https://www.amherst.edu/" target="_blank" rel="noreferrer noopener">Amherst College</a>, co-first author of the paper with Balmer.



“Added information, like the perceived brightness in direct imaging, would in theory support this estimate of the planet’s temperature.”



<h2 class="wp-block-heading" id="h-carbon-clues-in-a-cold-atmosphere">Carbon clues in a cold atmosphere</h2>



But 14 Herculis c turned out to be dimmer than expected. Researchers argue that a process known as carbon disequilibrium chemistry - often observed in <a href="https://www.earth.com/news/brown-dwarfs-detected-outside-the-milky-way-for-the-first-time/" target="_blank" rel="noreferrer noopener">brown dwarfs</a> - is the likely reason.



In these very cold atmospheres, carbon monoxide and carbon dioxide show up in places where methane should dominate. 



The likely cause is rapid mixing that pushes warm molecules from deep within the planet into colder upper regions.



“This exoplanet is so cold, the best comparisons we have that are well-studied are the coldest brown dwarfs,” Bardalez Gagliuffi explained.



“In those objects we see carbon dioxide and carbon monoxide existing at temperatures where we should see methane.”



“This is explained by churning in the atmosphere. Molecules made at warmer temperatures in the lower atmosphere are brought to the cold, upper atmosphere very quickly.”



<h2 class="wp-block-heading" id="h-beginning-of-a-new-chapter">Beginning of a new chapter</h2>



Researchers hope that this early look at 14 Herculis c is just the beginning. 



Webb's tiny light holds data, but future spectroscopic observations will reveal even more. They could give scientists a much clearer picture of the planet’s atmospheric makeup.



That, in turn, could help explain not just how this strange system formed, but how planetary systems evolve when governed by giant forces and chaotic events.



By pushing the boundaries of what we can see, Webb has once again opened a door - to a cold and tilted world far from Earth, where the rules of planet-making seem just a little different.



The research was presented at the <a href="https://aas.org/meetings/aas246" target="_blank" rel="noreferrer noopener">246th meeting of the American Astronomical Society</a> in Anchorage, Alaska.



The study has been accepted for publication in <a href="https://iopscience.iop.org/journal/2041-8205">The Astrophysical Journal Letters</a>.



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Webb Telescope reveals a chaotic, cold, and strange exoplanet

Astronomers have recently captured a rare and remarkable image of...

A soft, stretchable contact lens can now track eye pressure and movement, even when the eyelids are shut. It sends high-resolution, real-time data to a phone without blurring vision or causing discomfort.



The twin measurements - intraocular pressure and subtle shifts in gaze - are vital for catching problems like glaucoma before damage occurs.



<h2 class="wp-block-heading" id="h-how-the-smart-contact-lens-works">How the smart contact lens works</h2>



Created by engineers at the <a href="https://en.uestc.edu.cn/">University of Electronic Science and Technology of China</a> and tested in rabbits and people, the lens merges capacitive and magnetic sensors inside a five-layer film.



Serpentine copper wires register pressure changes as small as one millimeter of mercury (mmHg). A wafer-thin, neodymium-doped band answers the pressure coils with a magnetic pulse that reveals eye movement.



Both signals reach an exterior receiver the size of ordinary specs and then hop wirelessly to any Bluetooth-ready device.



<h2 class="wp-block-heading" id="h-why-eye-pressure-matters-overnight"><a></a>Why eye pressure matters overnight</h2>



Glaucoma steals sight by slowly eroding the optic nerve. The damage often begins with pressure spikes that emerge after lights-out, when standard tonometers cannot operate.



Excess pressure is not the whole story: rapid eye movement sweeps and irregular <a href="https://www.earth.com/news/gaze-and-intention-the-unspoken-language-of-survival/">gaze</a> fixes also correlate with disease risk.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/smart-contact-lens_stretchable-BCL_credit-Micro-Nano-Journal_1big.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/smart-contact-lens_stretchable-BCL_credit-Micro-Nano-Journal_1s.webp" alt="Design and working principle of the BCL. (i) Schematic diagram of BCL-based closed-eye capacitive intraocular pressure (CIOP) and magnetic eye movement (MEM) monitoring. (ii) Key components of the BCL. (iii) Optical images depicting the BCL in initial, stretched, and twisted states, and the experimental setup worn on an eyeball. (iv) Wireless transmission of CIOP and MEM signals to portable devices. b Three-dimensional image illustrating the thickness of various BCL components. c Height profile along the pink line in (b), displaying the height of multilayer components. d Finite element analysis (FEA) and experimental results of the BCL under a series of pressing heights, with corresponding experimental height results. e Biocompatibility Characterization of the BCL. Credit: Microsystems &amp; Nanoengineering" class="wp-image-1973876"/></a><figcaption class="wp-element-caption">Design and working principle of the BCL. (i) Schematic diagram of BCL-based closed-eye capacitive intraocular pressure (CIOP) and magnetic eye movement (MEM) monitoring. (ii) Key components of the BCL. (iii) Optical images depicting the BCL in initial, stretched, and twisted states, and the experimental setup worn on an eyeball. (iv) Wireless transmission of CIOP and MEM signals to portable devices. b Three-dimensional image illustrating the thickness of various BCL components. c Height profile along the pink line in (b), displaying the height of multilayer components. d Finite element analysis (FEA) and experimental results of the BCL under a series of pressing heights, with corresponding experimental height results. e Biocompatibility Characterization of the BCL. Click image to enlarge. Credit: Microsystems &amp; Nanoengineering</figcaption></figure>



Until now, no wearable system captured both cues while the eyes stayed closed. The new lens does, offering a missing night-time readout that could sharpen diagnosis and tailor drug timing.



<h2 class="wp-block-heading" id="h-engineering-the-smart-contact-lens">Engineering the smart contact lens</h2>



The device builds its sensing core on a transparent elastomer shaped like a standard hydrogel lens. Five nested sheets keep the profile thinner than the edge of a credit card.



The outer face hosts the copper coil, tuned to deform with corneal bulges caused by pressure shifts. A middle layer embeds stretchable conductors leading to a micro-scale circuit. 



Beneath that lies the magnetic film, followed by a comfort cushion that rests on the eye. A final, oxygen-permeable coating seals the stack and preserves clarity.



Tests on rabbit eyes showed the lens surviving thousands of blinks and pressure cycles without delamination. Human volunteers wore it for two hours under continuous monitoring and reported no burning, redness, or blur.



<h2 class="wp-block-heading" id="h-continuous-data-and-instant-feedback">Continuous data and instant feedback</h2>



A glasses-mounted Tesla meter reads the magnetic changes from the lens with more than 97 percent accuracy, translating those variations into horizontal, vertical, and rotational eye motion.



At the same time, the coil’s resonance shift reveals pressure. A companion phone app plots both streams in real time and stores them for later review. 



Clinicians can compare overnight peaks to daily baseline values, flagging patterns that merit therapy adjustments.



“This technology bridges a long-standing gap in ophthalmic care,” noted Dr. Guang Yao, co-lead author of the study.



“The ability to monitor both intraocular pressure and eye movement continuously - even when the eyes are closed - offers a more complete picture of <a href="https://www.earth.com/news/vitamin-helps-prevent-cataracts-and-maintain-eye-health/" target="_blank" rel="noreferrer noopener">eye health</a>.”



“It enables early intervention and more accurate tracking of disease progression, particularly for glaucoma patients. And because it's wireless and wearable, it can be used comfortably at home, not just in clinics.”



<h2 class="wp-block-heading" id="h-detecting-early-warning-signs">Detecting early warning signs</h2>



Eye movement data hint at disorders far outside ophthalmology. Irregular REM cycles mark sleep apnea and some mood conditions. Tremor-like micro-saccades can foreshadow <a href="https://www.earth.com/news/pesticide-exposure-increases-the-risk-of-parkinsons-disease/" target="_blank" rel="noreferrer noopener">Parkinson’s disease</a>.



By delivering a clean, night-long trace, the smart contact lens could help neurologists map early warning signs without bulky lab gear. It may also aid attention studies, tracking gaze stability during prolonged tasks.



The research team foresees layering a drug-reservoir ring onto the current design. In such a closed-loop lens, a pressure spike could trigger a micro-valve to release medication directly onto the cornea.



Add a thin glucose sensor, and the system might warn diabetics of rising blood sugar while dosing their eyes as needed. 



Modular fabrication means each medical discipline could swap in its own sensing film without reinventing the core electronics.



<h2 class="wp-block-heading" id="h-smart-contact-lens-monitors-vision-health">Smart contact lens monitors vision health</h2>



Biocompatibility assays showed no toxic leachates or immune response over a week-long animal trial. Vision tests confirmed that the lens preserved contrast and <a href="https://www.earth.com/news/rare-retinal-cells-explain-complex-color-perception/" target="_blank" rel="noreferrer noopener">color perception</a>.



The next hurdles are mass production and regulatory review, both eased by the fact that the base materials already appear in commercial lenses and wearable electronics. As costs drop, the device could reach pharmacies as a prescription add-on rather than a hospital-only tool.



Until now, monitoring eye health meant using slit-lamp exams or wearing daytime-only sensors - not a lens that worked around the clock.



The stretchable bimodal contact lens rewrites that rulebook, letting vision care continue after the lights go out. 



By catching nocturnal pressure surges and mapping every flicker of motion, it gives doctors a fuller, round-the-clock picture of the organ they struggle hardest to observe.



For millions at risk of silent <a href="https://www.earth.com/news/how-ai-could-protect-millions-of-people-from-vision-loss/" target="_blank" rel="noreferrer noopener">vision loss</a>, a routine morning sync with their phone could soon replace guesswork with precise, night-laden data - and turn sleep into an ally in safeguarding sight.



The study is published in the journal <a href="https://www.nature.com/articles/s41378-025-00946-y" target="_blank" rel="noreferrer noopener">Nature</a>.



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Smart contact lens keeps an eye on your health, night and day

A soft, stretchable contact lens can now track eye pressure...

Dogs aren’t just companions who brighten our daily routines. They may also be key players in monitoring how Valley fever moves through certain regions in the United States.



This disease, also called coccidioidomycosis, involves inhaling fungal spores found in dry soil conditions. 



<a href="http://vetmed.ucdavis.edu/faculty/jane-sykes" target="_blank" rel="noreferrer noopener">Jane Sykes</a>, lead author of a recent <a href="https://www.vetmed.ucdavis.edu/" target="_blank" rel="noreferrer noopener">UC Davis</a> study, worked with her team to see how information from dog infections could apply to humans.



<h2 class="wp-block-heading" id="h-understanding-valley-fever">Understanding Valley fever</h2>



When disturbed by wind, construction, or agricultural activity, the spores of <a href="https://www.sciencedirect.com/topics/immunology-and-microbiology/coccidioides-immitis" target="_blank" rel="noreferrer noopener">Coccidioides immitis</a> and <a href="https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/coccidioides-posadasii" target="_blank" rel="noreferrer noopener">Coccidioides posadasii</a> can ride on dust particles and travel into the lungs.



Some pets like to dig into dirt, creating an ideal chance to breathe in fungal particles. These Valley fever spores thrive in the Western parts of the country, often in places with specific soil moisture levels.



Though many people who are exposed may not experience symptoms, those who do often report flu-like illness, including fatigue, cough, fever, chest pain, and muscle aches.



In some cases, especially in individuals with weakened immune systems, Valley fever can become severe, spreading from the lungs to other parts of the body such as the skin, bones, joints, or even the brain, where it may cause <a href="https://www.earth.com/news/harmful-microbes-persist-on-hospital-surfaces-after-disinfection/" target="_blank" rel="noreferrer noopener">meningitis</a>. 



Diagnosis is typically confirmed through blood tests or imaging, and while mild cases often resolve without treatment, antifungal medications like fluconazole are prescribed for moderate to severe infections.



<h2 class="wp-block-heading" id="h-unusual-canine-clues">Unusual canine clues</h2>



The researchers discovered patterns by checking large collections of <a href="https://www.earth.com/news/lost-in-translation-how-we-misread-our-dogs-emotions/">dog</a> blood tests. 



They found that most positive results are linked to certain states with known contamination zones, but they also noticed smaller clusters appearing in locations not typically flagged for this infection.



“Dogs are sentinels for human infections,” said Jane Sykes. 



Her team collected blood test data in different areas to <a href="https://www.cdc.gov/valley-fever/about/index.html" target="_blank" rel="noreferrer noopener">identify rising trends</a> and potential health concerns for people.



<h2 class="wp-block-heading" id="h-what-puts-dogs-at-risk">What puts dogs at risk</h2>



Some vets <a href="https://vfce.arizona.edu" target="_blank" rel="noreferrer noopener">note</a> that certain breeds may be more prone to lung ailments, but any fungus exposure can be an issue. 



This might involve dusty backyards, fields, or construction sites, where spores in the soil can become airborne.



In regions with droughts or strong winds, soil dryness allows fungal particles to swirl into the air. Intense rainfall can also boost <a href="https://today.ucsd.edu/story/dangerous-airborne-fungus-boosted-by-california-droughts" target="_blank" rel="noreferrer noopener">fungal growth</a>, which further contributes to sporadic spikes in infection.



Researchers see these canine cases as indicators for possible spread in the broader population. Common symptoms in people include fatigue, cough, and sometimes sore joints.



Health agencies note that valley fever can become serious for those with weakened immune systems. Because dogs are tested more readily in certain regions, their results may warn us before human cases spike.



<h2 class="wp-block-heading" id="h-mapping-valley-fever-in-new-zones">Mapping valley fever in new zones</h2>



Scientists have spotted positive <a href="https://www.earth.com/news/uncovering-the-truth-the-reality-behind-canine-dna-testing/">canine</a> cases outside historically recognized areas. Jane Sykes explained that pockets of infection can appear in nearby states that might be overlooked.



“We should be closely watching those states because there could be under-recognition,” she said. This under-recognition means some doctors in these regions may not be aware of the disease and could miss early signs in humans.



Decades of shifting <a href="https://www.noaa.gov/education/resource-collections/climate/climate-change-impacts" target="_blank" rel="noreferrer noopener">climate patterns</a> have altered soil conditions. Over 130 places in the United States have recorded heavier bursts of rain in recent years, raising concerns about potential fungal growth when storms finally soak the land.



As new weather extremes develop, the fungus might have more opportunities to spread. Researchers keep emphasizing how environmental changes can shift the boundaries of diseases, leading to surprises in <a href="https://www.earth.com/news/covid-virus-can-remain-in-sperm-months-after-infection/">infection</a> data.



<h2 class="wp-block-heading" id="h-protecting-yourself-and-your-pet">Protecting yourself and your pet</h2>



Many dog owners wonder if this infection is preventable. Avoiding areas with visible dust clouds is one measure, though it can be tough when your pet loves running outdoors.



Some <a href="https://pubmed.ncbi.nlm.nih.gov/30690600/" target="_blank" rel="noreferrer noopener">vets</a> provide guidance on ways to limit exposure if your area is known for this fungus. 



Though these spores are hard to avoid entirely, regular checkups and early tests may help pets and owners stay aware of new health risks.



Veterinarians who live in spots with many valley fever cases watch for respiratory problems in dogs. A sudden cough or limp can signal hidden issues, prompting tests that reveal infection.



If caught early, there are antifungal treatments that can relieve symptoms. The goal is to manage lung damage and reduce further spread.



<h2 class="wp-block-heading" id="h-dogs-valley-fever-and-the-future">Dogs, valley fever, and the future</h2>



Researchers who track these <a href="https://www.earth.com/news/covid-infection-equips-the-body-to-fight-off-the-flu/">infections</a> see a bigger picture beyond local hotspots. They hope more states will gather accurate data so public health teams can warn residents who may be at risk.



Better knowledge about where the spores hide allows for timely alerts. Clear communication between veterinarians and medical professionals could help limit the toll on both animals and people.



Trends linked to heavy rain, population growth, and soil changes highlight the complexity of valley fever. Officials suggest that improved teaching for doctors could keep illness from going unnoticed.



Dogs may help identify emerging dangers because their health data can fill the gaps where human data are patchy. Scientists remain hopeful that continued studies will keep the public informed about this evolving fungal risk.



The study is published in the <a href="https://academic.oup.com/jid/article/231/5/e986/8108831?login=false" target="_blank" rel="noreferrer noopener">Journal of Infectious Diseases</a>.



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Scientists discover that dogs can alert humans to this quickly-spreading disease

Dogs aren’t just companions who brighten our daily routines. They...

Among tens of thousands of ant species, many show complex behaviors like agriculture and tool use. Longhorn crazy ants add a new twist to that story. Their brains are minuscule, but they manage coordinated, goal-oriented actions. 



A recent study shows that these ants can clear obstacles from a path before a food load even arrives. This action seems to require planning, yet it emerges without any <a href="https://www.earth.com/news/when-you-give-caffeine-to-ants-many-interesting-things-happen/" target="_blank" rel="noreferrer noopener">ant</a> holding a clear mental map.



Dr. Ehud Fonio, a scientist at the <a href="https://www.weizmann.ac.il/pages/" target="_blank" rel="noreferrer noopener">Weizmann Institute of Science</a>, is the lead author of the study.



“Here we show for the first time that workers of the longhorn crazy ant can clear obstacles from a path before they become a problem - anticipating where a large food item will need to go and preparing the way in advance," said Dr. Fonio.



"This is the first documented case of ants showing such forward-looking behavior during cooperative transport."



<h2 class="wp-block-heading" id="h-ants-plan-ahead-for-obstacles">Ants plan ahead for obstacles </h2>



The team made their discovery during fieldwork at the Weizmann Institute. Ants were seen removing pebbles before a food-carrying group arrived. This suggested some form of anticipation.



“When we first saw <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> clearing small obstacles ahead of the moving load we were in awe. It appeared as if these tiny creatures understand the difficulties that lie ahead and try to help their friends in advance,” said Dr. Ofer Feinerman, co-author of the study.



This chance observation led to a large-scale experiment involving 83 trials. The team replaced pebbles with plastic beads and placed cat food as bait. 



Ants cleared beads that blocked the path between food and nest, but only when the food was intact.



<h2 class="wp-block-heading" id="h-crazy-ants-clear-the-way-for-big-food">Crazy ants clear the way for big food</h2>



The ants cleared beads mainly when a single large pellet was present. With crumbs, they rarely cleared anything. This shows context sensitivity. Bead clearing happened only when it helped the group.



Ants transported the beads short distances, around 50 millimeters. They placed them away from the nest-food corridor. This effort reduced the food transport time by up to 15 times.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/longhorn-crazy-ants_carrying-bead_credit-Alessandro-Crespi_1big.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/longhorn-crazy-ants_carrying-bead_credit-Alessandro-Crespi_1s.webp" alt="Worker of longhorn crazy ant clearing a bead. Credit: Alessandro Crespi" class="wp-image-1973861"/></a><figcaption class="wp-element-caption">Worker of longhorn crazy ant clearing a bead. Click image to enlarge. Credit: Alessandro Crespi</figcaption></figure>



When large pellets were pinned down and could not be moved, <a href="https://www.earth.com/news/invasive-ants-have-found-a-new-way-to-spread-across-the-globe-on-cars/" target="_blank" rel="noreferrer noopener">ants</a> still cleared obstacles. But they ignored beads completely when no food or only crumbs were present.



<h2 class="wp-block-heading" id="h-ants-respond-to-scent-not-sight">Ants respond to scent, not sight</h2>



The study’s most surprising finding was that ants began clearing without even seeing or touching the food. The trigger? Fresh pheromone markings left by recruiters.



Even without food, these chemical signals caused some ants to start clearing beads. Of 155 observed ant-bead interactions, 97.2 percent were preceded by a nearby scent mark.



Direct contact with food was not necessary. Just encountering a pheromone trail within a 20 mm radius of a bead triggered clearing. This suggests that the behavior is socially driven, not based on internal plans.



<h2 class="wp-block-heading" id="h-collective-intelligence-of-ant-colonies">Collective intelligence of ant colonies</h2>



The experts discovered that crazy ants use a decentralized form of cognition. Instead of individual planning, their colony acts like a brain. 



Each ant is a unit responding to chemical cues. Together, they clear obstacles as if they understand the goal.



“Taken together, these results imply that our initial impression was wrong: in reality, individual workers don’t understand the situation at all. This intelligent behavior happens at the level of the <a href="https://www.earth.com/news/paleontologists-found-the-oldest-ant-species-on-earth-113-million-years-old-with-scythe-like-jaws/" target="_blank" rel="noreferrer noopener">colony</a>, not the individual," explained study co-author Dr. Danielle Mersch.



"Each ant follows simple cues - like fresh scent marks left by others - without needing to understand the bigger picture, yet together they create a smart, goal-directed outcome."



“We find this to be even more awe-inspiring than our initial guess,” said Feinerman.



<h2 class="wp-block-heading" id="h-simple-rules-for-complex-behavior">Simple rules for complex behavior </h2>



Interestingly, some ants cleared multiple beads in sequence. One ant removed 64 beads. These "serial clearers" often focused on the same sector around the food, repeatedly working in the same direction.



Some switched sectors but returned to old ones. This pattern hints at possible short-term memory or chemical trail-following. Researchers suggest these ants could be following pheromone gradients repeatedly.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/longhorn-crazy-ants_intelligence_swarm_credit-E-Fonio_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/longhorn-crazy-ants_intelligence_swarm_credit-E-Fonio_1s.webp" alt="Examples of experimental set-up and close-up of collective transport of prey and of obstacle-clearing behavior. Credit: E Fonio, D Mersch, O Feinerman" class="wp-image-1973864"/></a><figcaption class="wp-element-caption">Examples of experimental set-up and close-up of collective transport of prey and of obstacle-clearing behavior. Click image to enlarge. Credit: E Fonio, D Mersch, O Feinerman</figcaption></figure>



The research shows how complex behavior emerges from simple rules. It also highlights the power of external memory. Pheromone trails serve as shared information banks etched into the environment.



In this system, memory and action are collective. No single ant plans ahead. Yet their joint behavior gives the illusion of foresight. This mirrors how neurons form intelligent thought in the human brain.



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



This work changes how we think about planning in nature. It shows that meaningful coordination does not require conscious intent. 



In ants, intelligent-seeming food-related outcomes arise from distributed actions and shared cues. These findings deepen our understanding of swarm behavior. 



The study also suggests new directions for robotics, where machines could collaborate without central control by using simple signals.



The study is published in the journal <a href="https://www.frontiersin.org/journals/behavioral-neuroscience/articles/10.3389/fnbeh.2025.1533372/full" target="_blank" rel="noreferrer noopener">Frontiers in Behavioral Neuroscience</a>.



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Swarm intelligence: Ants can anticipate obstacles and plan ahead

Among tens of thousands of ant species, many show complex...

Scoops of lunar soil still surprise half a century after Apollo 17. The latest astonishment comes from specks of glass "moon beads" that sparkle like confetti under laboratory lights. 



Each bead measures under a millimeter and erupted 3.3 to 3.6 billion years ago, yet it keeps the <a href="https://www.earth.com/news/asteroid-that-once-threatened-earth-may-target-the-moon/" target="_blank" rel="noreferrer noopener">Moon</a>’s volcanic diaries locked inside.



The team behind the new analysis includes Thomas Williams, Stephen Parman, Alberto Saal, and Ryan Ogliore of <a href="https://washu.edu/" target="_blank" rel="noreferrer noopener">Washington University in St. Louis</a> and <a href="https://www.brown.edu/" target="_blank" rel="noreferrer noopener">Brown University</a>.



<h2 class="wp-block-heading" id="h-fiery-eruptions-left-moon-beads-behind">Fiery eruptions left moon beads behind</h2>



Molten basalt once blasted into vacuum, froze mid flight, and rained back as droplets now known as <a href="https://academic.oup.com/petrology/article/65/4/egae026/7622998" target="_blank" rel="noreferrer noopener">pyroclastic glass beads</a>. 



These eruptions behaved like the fiery fountains seen today on Kīlauea, launching material dozens of miles high.



Because no atmosphere cushioned the spray, the droplets cooled instantly and recorded chemical signals from deep lunar magma. That process turned them into perfect time capsules for <a href="https://www.earth.com/news/young-ridges-on-moons-surface-suggest-that-it-is-still-active/" target="_blank" rel="noreferrer noopener">planetary</a> scientists.



Astronauts found the first orange deposit at <a href="https://adsabs.harvard.edu/full/1990lgvp.work...56S" target="_blank" rel="noreferrer noopener">Shorty Crater</a> in 1972 and packed pounds of the vivid soil for study. 



Those bright colors hinted at titanium rich magmas that differ from the darker green beads sampled elsewhere on the Moon.



<h2 class="wp-block-heading" id="h-moon-beads-hold-gas-and-water">Moon beads hold gas and water</h2>



Researchers prize the beads because they trap internal gases that never leaked to space. Melt inclusions inside similar beads carry 615 to 1,410 parts per million <a href="https://pubmed.ncbi.nlm.nih.gov/21617039/" target="_blank" rel="noreferrer noopener">water</a>, rivaling Earth’s upper mantle.



That unexpected moisture rewrote textbooks that once labeled the Moon bone dry. It also raised questions about how much volatile material escaped during the <a href="https://www.earth.com/news/total-lunar-eclipse-will-paint-the-moon-blood-red-tomorrow/" target="_blank" rel="noreferrer noopener">Moon</a> forming impact.



The new study focuses less on what sits inside each bead and more on what clings to the outside. There, nanoscale minerals reveal the chemistry of eruption clouds that once roared above the surface.



<h2 class="wp-block-heading" id="h-new-tools-reveal-fine-details">New tools reveal fine details</h2>



Ogliore’s lab used a <a href="https://snsf.stanford.edu/facilities/xsa/nanosims" target="_blank" rel="noreferrer noopener">NanoSIMS instrument</a> that bombards samples with ions and counts the fragments one atom at a time. 



Complementary microscopes and an <a href="https://www.cameca.com/products/apt/technique" target="_blank" rel="noreferrer noopener">atom probe tomography system</a> in partner institutions filled out the picture.



Earlier Apollo <a href="https://ntrs.nasa.gov/citations/20070025090" target="_blank" rel="noreferrer noopener">reports</a> listed the beads’ colors but could not inspect coatings thinner than a red blood cell. Today’s gear slices those coatings like digital deli meat, mapping every element.



“We’ve had these samples for 50 years, but we now have the technology to fully understand them,” said Ogliore.



<h2 class="wp-block-heading" id="h-moon-bead-coatings-show-eruption-clues">Moon bead coatings show eruption clues</h2>



The shine comes from mounds of zinc sulfide just billionths of an inch high. In mineral form that compound is called sphalerite, the chief ore of zinc on Earth. 



Each mound starts rich in iron where it touches the glass, then grades to purer zinc toward the top. That gradient suggests eruption clouds cooled and thinned as the beads rode outward.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/moon_sparkling-volcanic-glass-beads_credit-Icarus_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/moon_sparkling-volcanic-glass-beads_credit-Icarus_1s.webp" alt="Schematic diagram of a lunar lava fountaining volcanic eruption. Two glass bead trajectories through the volcanic gas cloud are illustrated with the arrowed lines (one lofted, one shallow). Three stages of bead evolution are depicted: 1) outgassing, 2) ingassing, 3) desublimation/condensation. Beads on different trajectories will encounter different conditions during stage 3 along different path lengths. Credit: Icarus" class="wp-image-1973856"/></a><figcaption class="wp-element-caption">Schematic diagram of a lunar lava fountaining volcanic eruption. Two glass bead trajectories through the volcanic gas cloud are illustrated with the arrowed lines (one lofted, one shallow). Three stages of bead evolution are depicted: 1) outgassing, 2) ingassing, 3) desublimation/condensation. Beads on different trajectories will encounter different conditions during stage 3 along different path lengths. Click image to enlarge. Credit: Icarus</figcaption></figure>



Coatings on <a href="https://www.earth.com/news/dry-side-of-the-moon-reveals-new-details-about-its-evolution/" target="_blank" rel="noreferrer noopener">lunar</a> beads elsewhere carry sodium chloride, gallium, or fluorine, supporting the idea that fire fountain gases were packed with volatile metals. 



Those films are just a few hundred atoms thick, yet they store clues about pressure, temperature, and gas composition with a fidelity unmatched by larger rocks. They also explain why small beads can sparkle against a dusty gray landscape.



<h2 class="wp-block-heading" id="h-how-moon-beads-guide-future-missions">How moon beads guide future missions</h2>



Knowing how volatiles behaved in ancient eruptions helps refine models of lunar resource distribution. Future astronauts looking for sulfur or zinc deposits might follow pathways mapped by these tiny mounds.



The coatings also record sulfur isotope shifts that trace gas flow, information that can calibrate seismic and orbital data about past volcanic vents. 



Such cross checks are vital as NASA targets Artemis <a href="https://www.nasa.gov/news-release/nasa-provides-update-on-artemis-iii-moon-landing-regions/" target="_blank" rel="noreferrer noopener">landing zones</a> near similar pyroclastic plains.



These glass beads reveal that the Moon’s volcanic past was more dynamic than previously assumed. Rather than being geologically quiet, ancient eruptions threw material high into space, cooled it instantly, and preserved complex gas chemistry.



By identifying specific minerals on the bead surfaces, scientists can now trace how gas pressures dropped and compositions shifted within seconds. That kind of resolution reshapes how we think about volcanic eruptions in a vacuum.



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



These beads do more than tell us about the Moon, they offer a glimpse into how volcanic processes might look on other airless worlds. 



Planets and moons without atmospheres, like Mercury or some asteroids, may also host surface materials with preserved eruption signatures if similar pyroclastic activity occurred.



Studying these processes in lunar samples gives researchers a benchmark for interpreting future samples from other missions, such as Mars’ moons or even returned asteroid regolith. 



This broader view helps scientists compare geologic histories across the solar system and refine our understanding of how planetary bodies lose or retain volatiles.



Williams and colleagues now want to compare orange, green, and black beads across core samples to watch eruption styles evolve over minutes. 



They will also hunt for any beads that show metallic zinc rather than <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/zincblende" target="_blank" rel="noreferrer noopener">sphalerite</a>, a sign of even lower eruption pressures.



The Moon still keeps many secrets, but its glittering beads talk louder each time a new tool listens. Continued cooperation between microscopists and mission planners promises to turn more of that lunar whisper into a readable history.



The study is published in <a href="https://www.sciencedirect.com/science/article/pii/S001910352500154X?via%3Dihub" target="_blank" rel="noreferrer noopener">Icarus</a>.



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Moon volcanoes left sparkling clues behind in the form of tiny glass beads

Scoops of lunar soil still surprise half a century after...

A roaring hockey crowd can spark brain energy in an arena faster than anything else. The sight of skaters hurtling across the ice excites viewers, but deeper <a href="https://www.earth.com/news/stress-hijacks-the-brain-disrupting-sleep-and-memory/" target="_blank" rel="noreferrer noopener">brain</a> activity may be flickering beneath the surface of a fan’s mind.



Fans come from all walks of life. Some passively watch the puck glide around, while others hang on every shift, penalty, and shot attempt as if the future of the universe depends on the next goal.



<h2 class="wp-block-heading" id="h-brains-of-hockey-fans-during-a-game">Brains of hockey fans during a game</h2>



In a recent study by the <a href="https://uwaterloo.ca/" target="_blank" rel="noreferrer noopener">University of Waterloo</a>, researchers used a tool known as functional near-infrared spectroscopy (fNIRS) to see if certain people’s brains respond differently during key points in a game. 



<a href="https://uwaterloo.ca/recreation-and-leisure-studies/people-profiles/luke-potwarka" target="_blank" rel="noreferrer noopener">Dr. Luke Potwarka</a>, associate professor at the University of Waterloo, led this project and took a keen interest in moments that even casual observers might shrug off. 



“We found that for fans who really love the sport, these face-offs were moments of intense <a href="https://www.earth.com/news/your-brain-literally-changes-based-on-daily-activities-and-lifestyle/" target="_blank" rel="noreferrer noopener">mental</a> engagement,” said Dr. Potwarka. 



These were the moments when fans weren’t just watching, they were mentally preparing, anticipating, and evaluating what might come next.



<h2 class="wp-block-heading" id="h-key-hockey-moments-activate-the-brain">Key hockey moments activate the brain</h2>



Face-offs happen countless times in any hockey match. They reset play and give teams a chance to gain control of the puck in strategic areas.



Serious fans often lean forward at that moment. They know a face-off close to the opponent’s net can decide momentum, even if it does not produce an immediate <a href="https://www.earth.com/news/brains-learn-new-skills-much-faster-than-expected/" target="_blank" rel="noreferrer noopener">goal</a>.



The <a href="https://www.sciencedirect.com/topics/immunology-and-microbiology/dorsomedial-prefrontal-cortex" target="_blank" rel="noreferrer noopener">dorsal medial prefrontal cortex</a> is one region that can show stronger signals when emotional intensity ramps up. Researchers noticed that fans with higher <a href="https://pure.psu.edu/en/publications/an-examination-of-the-relationship-between-leisure-activity-invol" target="_blank" rel="noreferrer noopener">ego involvement</a> showed more activation in that area during offensive face-off moments.



For casual observers, these face-offs seemed more ordinary. They responded strongly to obvious events such as a goal, but their brains did not light up as much for plays setting the stage for potential scores.



<h2 class="wp-block-heading" id="h-emotional-attachment-changes-brain-activity">Emotional attachment changes brain activity</h2>



People who identify with a sport often build personal rituals around watching games. They might rearrange plans or wear specific clothing to support their team.



That personal attachment can translate into heightened emotional states when a possible shift in the game’s balance is on the line. Researchers suggest that these insights could help broadcasters tailor content to engage longtime supporters and casual viewers alike.



Fans with strong ego involvement don’t just enjoy hockey, they see it as part of who they are. That identity shapes how they process information, narrowing their focus during key game moments and increasing emotional investment in outcomes.



In the study, individuals who felt most connected to the sport showed heightened activity in both sides of their dorsomedial prefrontal <a href="https://www.earth.com/news/how-the-brain-learns-study-reveals-an-unexpected-twist/" target="_blank" rel="noreferrer noopener">cortex</a>, especially when offensive face-offs occurred. 



This suggests that identity-linked attention kicks in before anything major happens on the ice, not just after a big play unfolds.



<h2 class="wp-block-heading" id="h-using-brain-data-from-hockey-fans">Using brain data from hockey fans </h2>



Sports broadcasters could focus on face-offs or other subtle cues with more compelling commentary. That extra detail might capture the attention of viewers who have yet to develop a strong bond with the game.



Production crews might also highlight slow-motion replays of a critical face-off to show tactics and anticipation. This approach could gradually spark interest for newcomers while feeding the excitement of loyal fans.



Hockey is a fast-moving event. Goals and penalties are the high-drama moments that grab headlines. Yet this study shows that smaller details can captivate those who hold hockey close to their hearts.&nbsp;



<h2 class="wp-block-heading" id="h-what-casual-fans-might-miss">What casual fans might miss</h2>



The absence of strong neural responses from casual fans during offensive face-offs highlights how much knowledge shapes perception. 



Without a deeper understanding of hockey strategy, these viewers may not recognize the tension and possibilities building in those moments.



This difference matters because it means broadcasters can’t assume every viewer sees the same game. What seems ordinary to one person might feel like a make-or-break moment to someone else, depending on how much of their identity is tied to the sport.



<h2 class="wp-block-heading" id="h-exploring-brain-responses-beyond-hockey">Exploring brain responses beyond hockey</h2>



These findings open up possibilities for researchers who want to see how fans react in other sports. 



Differences in knowledge, loyalty, and emotional ties likely play a role in how viewers respond to game events. Basketball, soccer, and baseball each have distinct moments akin to hockey’s face-offs. 



As scientists continue to refine <a href="https://www.ucl.ac.uk/news/2024/sep/wearable-brain-imaging-device-shines-light-how-babies-respond-real-world-situations" target="_blank" rel="noreferrer noopener">wearable brain-imaging devices</a>, they may reveal new ways to understand the bond between spectators and the sports they love.



The study is published in the journal <a href="https://www.nature.com/articles/s41598-025-96895-7" target="_blank" rel="noreferrer noopener">Scientific Reports</a>.



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Loyal hockey fans show higher brain activity during matches

A roaring hockey crowd can spark brain energy in an...

School,,Education,And,Laziness,Concept,-,Tired,Teenage,Student,Girl

Late nights are a badge of honor in many high‑school hallways, yet the cost often hides in plain sight. When classes, homework, and screens shave hours off nightly rest, stress hormones rise and moods wobble. 



A new investigation of nearly two thousand middle‑schoolers marks out a simple guardrail: sleep in a little on weekend mornings, but stop well before lunchtime.



After tracking wrist‑device data and mental‑health scores, the team observed the best outlook in teens who added under two extra hours of <a href="https://www.earth.com/news/sleep-prepares-the-brain-for-the-future-while-protecting-memories-of-the-past/" target="_blank" rel="noreferrer noopener">shut‑eye</a> on Saturdays and Sundays.



<a href="https://cas.uoregon.edu/directory/natural-sciences/all/sojeongk" target="_blank" rel="noreferrer noopener">Sojeong Kim</a> of the University of Oregon, presenting the findings today at the SLEEP 2025 meeting in Seattle, led the study with colleagues from the <a href="https://abcdstudy.org/" target="_blank" rel="noreferrer noopener">Adolescent Brain Cognitive Development project</a>.



<h2 class="wp-block-heading" id="h-most-teens-don-t-sleep-enough">Most teens don’t sleep enough</h2>



Only <a href="https://www.cdc.gov/yrbs/dstr/pdf/dstr-dietary-physicalactivity-sleepbehavior2013-2023-508.pdf" target="_blank" rel="noreferrer noopener">23 percent</a> of U.S. high‑school students log at least eight hours on a school night, federal surveyors reported last year. Sparse rest shows up as poorer attention, slower memory consolidation, and heavier <a href="https://www.earth.com/news/sleep-quality-could-be-the-key-to-better-metabolic-health/" target="_blank" rel="noreferrer noopener">emotional swings</a>.



The <a href="https://aasm.org/advocacy/position-statements/teen-sleep-duration-health-advisory/" target="_blank" rel="noreferrer noopener">American Academy of Sleep Medicine</a> advises 13‑ to 18‑year‑olds to bank eight to ten hours each night for steady growth and learning. 



Yet biology pushes adolescents to prefer late bedtimes, while early bells drag them out of bed before their <a href="https://nigms.nih.gov/education/fact-sheets/Pages/circadian-rhythms" target="_blank" rel="noreferrer noopener">circadian rhythm</a> finishes its natural cycle.



<h2 class="wp-block-heading" id="h-teens-naturally-sleep-and-wake-up-late">Teens naturally sleep and wake up late</h2>



Teenagers experience a biological delay in their circadian rhythm, meaning they naturally fall asleep and wake up later than younger children or adults. 



This shift is caused by changes in <a href="https://www.hopkinsmedicine.org/health/wellness-and-prevention/melatonin-for-sleep-does-it-work" target="_blank" rel="noreferrer noopener">melatonin</a> production during puberty, which pushes the body's internal clock back by one to two hours.



Because school start times don’t align with this shift, teens are often forced to wake up while still in their biological night. 



The resulting disconnect between natural sleep patterns and social demands is known as <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC8707256/" target="_blank" rel="noreferrer noopener">social jetlag</a>, a condition that has been linked to mood disorders and reduced academic performance.



<h2 class="wp-block-heading" id="h-weekend-sleep-boost-of-1-2-hours-helps-mood">Weekend sleep boost of 1–2 hours helps mood</h2>



Researchers call the practice of extending weekend sleep <a href="https://pubmed.ncbi.nlm.nih.gov/36612896/" target="_blank" rel="noreferrer noopener">weekend catch‑up sleep</a>. Kim’s group sorted participants into three bands: no catch‑up, one to two hours, and more than two hours.&nbsp;



Those in the middle group scored lowest on internalizing symptoms, a bundle of anxiety and low mood markers, even after the team adjusted for sex, race, and socioeconomic status. 



The results echo a South Korean cohort in which teens adding 60–119 minutes on weekends reported higher well‑being than those who slept in longer.



“The results show that both <a href="https://www.earth.com/news/why-new-mothers-feel-exhausted-despite-getting-sleep/" target="_blank" rel="noreferrer noopener">sleeping</a> less on weekends than weekdays and sleeping substantially more on weekends were associated with higher anxiety symptoms,” explained Kim.



<h2 class="wp-block-heading" id="h-weekend-sleep-tracked-using-fitbits">Weekend sleep tracked using fitbits</h2>



Researchers collected data from 1,877 teens with an average age of 13.5 years. Each participant wore a Fitbit device to objectively measure sleep duration across both weekdays and weekends.



To track mental health, the team used the <a href="https://aseba.org/wp-content/uploads/BPM-Y11-18_511-sample-copy-watermark-1.pdf" target="_blank" rel="noreferrer noopener">Brief Problem Monitor–Youth</a>, a tool that evaluates internalizing symptoms like anxiety and low mood. 



Weekend catch‑up sleep was calculated by subtracting average weekday sleep from weekend totals, then categorizing teens into three groups based on this difference.



<h2 class="wp-block-heading" id="h-why-too-much-rebound-can-backfire">Why too much rebound can backfire</h2>



At first glance, extra hours of <a href="https://www.earth.com/news/one-night-of-lost-sleep-can-trigger-hidden-health-issues/" target="_blank" rel="noreferrer noopener">rest</a> should erase weekday debt. But oversleeping drags the body clock later, making Sunday night shut‑eye harder to achieve and starting a fresh deficit cycle. 



Long morning lie‑ins also trim daylight exposure, one of the easiest cues for resetting melatonin release.



Laboratory work <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC11578994/" target="_blank" rel="noreferrer noopener">links</a> irregular sleep‑wake patterns with higher evening cortisol and amygdala reactivity, biological changes tied to anxious rumination. 



Kim’s data reinforce the idea that stability, not sheer quantity, keeps teenage brains on an even keel.



<h2 class="wp-block-heading" id="h-parents-can-support-better-sleep-routines">Parents can support better sleep routines</h2>



A two‑hour allowance is practical: if a teen usually rises at 6:30 a.m., a target of 8:30 a.m. on Saturday lets friends stay up for a movie without wrecking Monday. 



Families can dim house lights an hour before bed, swap late‑night scrolling for music or journaling, and schedule weekend sports or chores mid‑morning so alarms are still needed.



“Many teens try to make up for lost sleep by sleeping in on weekends,” Kim said. Parental buy‑in helps translate that urge into a measured routine rather than an open‑ended Sunday sleep marathon.



<h2 class="wp-block-heading" id="h-school-schedules-still-matter">School schedules still matter</h2>



Household tweaks compete with systemic hurdles. U.S. high schools typically start before 8:00 a.m., yet laboratories show adolescent brains remain in a biological night until about that hour. 



Districts that shifted bells past 8:30 a.m. report stronger attendance and lower crash rates, supporting the idea that policy can lighten the private work parents now shoulder.



Weekend guidelines will not replace nightly sufficiency. The new study found no benefit for teens who grabbed little or no rebound sleep, underscoring that weekday restriction still carried emotional costs.



<h2 class="wp-block-heading" id="h-better-tools-may-guide-weekend-sleep-habits">Better tools may guide weekend sleep habits</h2>



Kim’s team plans longitudinal analyses to test whether moderate weekend recovery predicts future mental‑health resilience. 



Wearable devices give scientists a sharper lens than self‑reports and may soon guide personalized alerts, nudging students to adjust bedtime before mood dips.



Until then, a modest Saturday lie‑in stands out as a simple win: enough to refill the tank, not enough to flood the system.



The study is published in <a href="https://academic.oup.com/sleep/article/48/Supplement_1/A115/8136037" target="_blank" rel="noreferrer noopener">Sleep</a>.



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Weekend catch up sleep benefits teens when done right

Late nights are a badge of honor in many high‑school...

Physicists at MIT have spotted a fresh type of magnetism in nickel iodide (NiI₂), a two‑dimensional crystal. It mixes traits of everyday magnets and subtle, hidden ones, yet forms a distinct spiral pattern at the atomic level.



Qian Song, a research scientist at MIT’s Materials Research Laboratory (<a href="https://mrl.mit.edu/" target="_blank" rel="noreferrer noopener">MRL</a>), and his team were the first to <a href="https://www.nature.com/articles/s41586-025-09034-7" target="_blank" rel="noreferrer noopener">identify</a> and manipulate this <a href="https://arxiv.org/abs/2309.01607" target="_blank" rel="noreferrer noopener">p‑wave magnetism</a> in lab-grown nickel iodide flakes. They showed they could flip the spiral spin pattern using a small electric field.



Scientists have studied <a href="https://www.sciencedirect.com/topics/engineering/ferromagnet" target="_blank" rel="noreferrer noopener">ferromagnets</a>, like fridge magnets and compass needles, where all spins align. 



<a href="https://www.sciencedirect.com/topics/physics-and-astronomy/antiferromagnetism" target="_blank" rel="noreferrer noopener">Antiferromagnets</a>, on the other hand, have alternating <a href="https://www.earth.com/news/magnetic-north-pole-is-moving-faster-than-ever-as-it-races-toward-russia/" target="_blank" rel="noreferrer noopener">spins</a> that cancel out overall. This new state blends both: it has a preferred spin direction yet remains magnetically balanced thanks to its spiral layout.



<h2 class="wp-block-heading" id="h-nickel-atoms-form-a-magnetic-spiral">Nickel atoms form a magnetic spiral</h2>



Researchers created single‑crystal flakes of nickel iodide. These were a few nanometers thick and tiny but perfectly layered. 



The nickel <a href="https://www.earth.com/news/our-milky-way-galaxys-magnetic-space-turbulence-captured-in-unprecedented-detail/" target="_blank" rel="noreferrer noopener">atoms</a> in this lattice arrange their spins in a spiral, which can twist left‑handed or right‑handed.



The team tested how these spirals interacted with traveling electrons. They used <a href="https://www.nature.com/articles/s41377-021-00516-7" target="_blank" rel="noreferrer noopener">circularly polarized light</a> and found that electrons matched the spin direction of the spiral. This confirmed the presence of p‑wave magnetism in the material.



Next came a key breakthrough: using a tiny voltage to switch the spiral’s handedness. When the electric field aligned with the spiral, it forced a switch from left to right, changing how <a href="https://www.earth.com/news/earths-magnetic-field-has-a-dent-and-nasa-is-watching-closely/" target="_blank" rel="noreferrer noopener">electrons</a> spin along specific paths.



<a href="https://physics.cmit.edu/faculty/riccardo-comin/" target="_blank" rel="noreferrer noopener">Riccardo Comin</a>, co‑author from MIT, noted this is more efficient than moving electric charge. Since only spins shift, there’s far less heat loss, the usual problem with conventional electronics.



<h2 class="wp-block-heading" id="h-improving-memory-devices">Improving memory devices</h2>



Spintronics stores data using electron spin, not <a href="https://www.earth.com/news/altermagnetism-third-form-of-magnetism-existence-confirmed/" target="_blank" rel="noreferrer noopener">charge</a>. This could allow denser, faster, low‑power memory. 



Song said the control of p‑wave magnets with small electric fields “could save five orders of magnitude of energy.”



Libor Šmejkal of the <a href="https://www.mpg.de/max-planck-research-groups" target="_blank" rel="noreferrer noopener">Max Planck Group</a> praised the results, noting they confirm theoretical expectations and highlight new possibilities for unconventional magnets.



In traditional electronics, current flows by moving electric charge. This generates heat, which limits how small and fast devices can get. <a href="https://www.physics.umd.edu/rgroups/spin/intro.html" target="_blank" rel="noreferrer noopener">Spintronics</a> changes that by transmitting information using spin instead of charge.



Spin currents could allow for cooler, denser, and more efficient devices. If p-wave materials can be used at scale, they might replace some components in hard drives, logic gates, or <a href="https://www.nature.com/articles/s41586-024-08253-8" target="_blank" rel="noreferrer noopener">neuromorphic chips</a> designed to mimic the brain.



<h2 class="wp-block-heading" id="h-effect-works-only-in-extreme-cold">Effect works only in extreme cold</h2>



Right now, these effects show up only below about 60 K, around –346 °F, colder than <a href="https://www.sciencedirect.com/topics/chemical-engineering/liquid-nitrogen" target="_blank" rel="noreferrer noopener">liquid nitrogen</a>. Comin acknowledged that room‑temperature performance remains the next challenge.



But p‑wave magnetism could guide the search for materials that work at everyday conditions. This state connects spins, electric fields, and atomic structure in a way that opens new design paths.



Symmetry plays a major role in how materials behave at the quantum level. 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/spiral-magnetic-order_nii2_new-form-magnetism_credit-MIT_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/spiral-magnetic-order_nii2_new-form-magnetism_credit-MIT_1s.webp" alt="Spiral magnetic order (light blue arrows) on the triangular lattice of NiI2 (black spheres represent Ni atoms) enables electrically switchable (white jagged lines) p-wave magnetism. Spin-up (orange dots) and spin-down (blue dots) electrons propagate in opposite directions and reverse their paths when the handedness of the spiral magnetic order is switched (left vs. right). Credit: Massachusetts Institute of Technology" class="wp-image-1973823"/></a><figcaption class="wp-element-caption">Spiral magnetic order (light blue arrows) on the triangular lattice of NiI2 (black spheres represent Ni atoms) enables electrically switchable (white jagged lines) p-wave magnetism. Spin-up (orange dots) and spin-down (blue dots) electrons propagate in opposite directions and reverse their paths when the handedness of the spiral magnetic order is switched (left vs. right). Click image to enlarge. Credit: Massachusetts Institute of Technology</figcaption></figure>



In p-wave magnets like nickel iodide, the broken <a href="https://www.paradim.org/highlights/MIP_67" target="_blank" rel="noreferrer noopener">inversion symmetry</a> (where the atomic structure isn't identical when flipped) helps create the conditions for <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/anie.202017116" target="_blank" rel="noreferrer noopener">spin–electric field coupling</a>.



This asymmetry allows electric fields to control magnetic properties in ways not possible with traditional magnets. That’s key for building devices that respond to low voltages with high precision, especially for next-generation memory and quantum components.



<h2 class="wp-block-heading" id="h-challenges-for-practical-use">Challenges for practical use</h2>



One hurdle in bringing p-wave magnetism to consumer devices is stability. Many exotic magnetic states only appear at ultracold temperatures or degrade quickly under ambient conditions.



To be viable, materials must combine the right crystal structure, spin properties, and resistance to interference from heat or strain. 



Developing such compounds will require close collaboration between experimental physicists, materials scientists, and device engineers.



The reported study draws on advanced tools: first‑principles calculations and symmetry analysis, confirming p‑wave magnetism’s electrical control in a <a href="https://pubs.acs.org/doi/10.1021/jacs.8b06475" target="_blank" rel="noreferrer noopener">type II multiferroic</a>.



NiI₂ itself has been featured earlier in <a href="https://dspace.mit.edu/handle/1721.1/157577" target="_blank" rel="noreferrer noopener">studies</a> of <a href="https://www.bnl.gov/magnets/helical-project.php" target="_blank" rel="noreferrer noopener">helical magnetism</a> and <a href="https://www.nature.com/articles/natrevmats201646" target="_blank" rel="noreferrer noopener">multiferroics</a>. This latest work builds on multiyear efforts to understand how spiral spins and electric polarization interact.



<h2 class="wp-block-heading" id="h-room-temperature-magnetic-spirals">Room-temperature magnetic spirals</h2>



Scientists aim to identify materials that show similar p‑wave traits above room temperature. Real‑world devices like spintronic memories or processors could benefit from such efficient, controlled magnetism.



The intersection of theory and experiment here is powerful. It points directly at applications. It also signals that we might be entering a new era in how we use electron spin in technology.



P‑wave magnetism has sparked interest beyond MIT. Research groups across Europe and Asia are investigating similar magnetic states in other two‑dimensional materials, hoping to unlock room‑temperature applications.



This work draws on <a href="https://www.nature.com/subjects/condensed-matter-physics" target="_blank" rel="noreferrer noopener">condensed matter physics</a>, <a href="https://www.sciencedirect.com/topics/materials-science/materials-synthesis" target="_blank" rel="noreferrer noopener">materials synthesis</a>, and <a href="https://news.mit.edu/2020/explained-quantum-engineering-1210" target="_blank" rel="noreferrer noopener">quantum engineering</a>. 



The convergence of these fields suggests that progress will depend on shared data, open-source modeling tools, and collaborative frameworks that cross national and disciplinary lines.



The study is published in <a href="https://www.nature.com/articles/s41586-025-09034-7" target="_blank" rel="noreferrer noopener">Nature</a>.



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Physicists observe a new form of magnetism for the first time

Physicists at MIT have spotted a fresh type of magnetism...

The Karoo stretches across more than 150,000 square miles of semi-arid South Africa, a place where sun-bleached soil keeps secrets older than dinosaurs. Wander its stony flats and you’ll see ridges of exposed rock that look like the pages of a giant book. 



The “chapters” span hundreds of millions of years, each one packed with fossilized bone and impressions of vanished forests. For anyone fascinated by life’s backstory, the Karoo is irresistible.



Long before geology students arrived with measuring tapes and plaster, Indigenous families lived among those same outcrops. 



The San, sometimes called the /Xam, camped at waterholes, painted hunting scenes on sandstone walls, and passed down tales of shape-shifting serpents that brewed thunderstorms. 



Their art survives in shallow caves and overhangs, capturing the everyday and the uncanny with equal care.



<h2 class="wp-block-heading" id="h-dicynodont-art-painted-in-caves">Dicynodont art painted in caves</h2>



The Karoo’s fossil fame rests on creatures named dicynodonts - chunky plant-eaters about the size of pigs, sporting a beak and two downward-pointing tusks. 



They ruled the Permian Period more than 250 million years ago, well before the <a href="https://www.earth.com/news/where-did-dinosaurs-come-from-missing-fossils-hold-the-secret/" target="_blank" rel="noreferrer noopener">first dinosaur hatched</a>. 



Because the region is dry and wind-scoured, dicynodont skulls often erode straight out of hillsides; a passerby can spot the ivory-colored bone from yards away. 



It’s not hard to imagine early herders stumbling upon those skulls and weaving them into local lore.



<a href="https://en.wikipedia.org/wiki/San_people" target="_blank" rel="noreferrer noopener">The San</a> also left thousands of charcoal and ochre paintings. Some show antelope and giraffes, others depict trance dances where healers slip into the spirit world. 



Among the most intriguing images appears on a wall known as the Horned Serpent panel, created between 1821 and 1835. 



One painted figure stretches like a slender <a href="https://www.earth.com/news/crocodile-evolution-was-influenced-by-environmental-factors/" target="_blank" rel="noreferrer noopener">crocodile</a> but displays a pair of tusks that bend toward the ground - no living African animal matches that appearance.



<h2 class="wp-block-heading" id="h-tusks-on-the-rock-wall">Tusks on the rock wall</h2>



When researchers first cataloged the panel, they guessed the creature might be a rain-making spirit. That interpretation fit San cosmology, where serpents often control clouds. 



Yet even a mythic animal usually borrows details from reality: hoof shapes, horn curls, or in this case, tusks. The puzzle lingered for decades.



A fresh investigation recently took a different angle. 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/cave-art_south-africa_1800s_dicynodont-extinct_credit-Julien-Benoit_1big.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/cave-art_south-africa_1800s_dicynodont-extinct_credit-Julien-Benoit_1s.webp" alt="Painting of the dicynodont made by the San in the early 1800s. Credit: Julien Benoit" class="wp-image-1973469"/></a><figcaption class="wp-element-caption">Painting of the dicynodont made by the San in the early 1800s. Click image to enlarge. Credit: Julien Benoit</figcaption></figure>



After carefully comparing the painted outline with dozens of Karoo fossils, a paleontologist noticed striking overlap - head shape, tusk angle, and body proportions mirrored those of a typical <a href="https://www.earth.com/news/gordonia-traquairi-pig-like-creature-discovered-roamed-earth-250-million-years-ago/" target="_blank" rel="noreferrer noopener">dicynodont skeleton</a>. 



The artist seems to have sketched what looks like a fossil skull still embedded in rock, then fused it with a serpent’s sinuous torso.



<h2 class="wp-block-heading" id="h-searching-for-answers">Searching for answers</h2>



The idea gains strength from archaeology. Dig sites near San shelters have yielded chipped stone tools alongside fossil fragments carried from distant outcrops. 



That means people collected ancient bones, perhaps as curios or ritual objects. 



Oral traditions recorded in the late 1800s even speak of colossal beasts that once walked the land before “the ground dried and cracked.” Those tales echo the fossil record’s story of extinction during the end-Permian mass die-off.



If the cave art painting really captures a dicynodont, it predates formal paleontology. Western science first named a species in 1845, yet the Horned Serpent panel was finished no later than 1835. 



<figure class="wp-block-image aligncenter size-full"><img src="https://www.earth.com/wp-content/uploads/2025/06/cave-art_south-africa_1800s_dicynodont_horned-serpent-panel_credit-Julien-Benoit_1s.webp" alt="The Horned Serpent panel. A, general view of the Horned Serpent panel photographed in 2024 by the author. B, close up of the section figured in Stow and Bleek's plate 39. C, close up of the tusked animal. D, close up of the warriors painted below the Horned Serpent panel. E, close up of the warriors painted to the right of the panel. Credit: Julien Benoit, 2024, PLOS ONE" class="wp-image-1973466"/><figcaption class="wp-element-caption">The Horned Serpent panel. A, general view of the Horned Serpent panel photographed in 2024 by the author. B, close up of the section figured in Stow and Bleek's plate 39. C, close up of the tusked animal. D, close up of the warriors painted below the Horned Serpent panel. E, close up of the warriors painted to the right of the panel. Click image to enlarge. Credit: Julien Benoit, 2024, PLOS ONE</figcaption></figure>



“The painting was made in 1835 at the latest, which means this dicynodont was depicted at least ten years before the western scientific discovery and naming of the first dicynodont by Richard Owen in 1845," noted Julien Benoit of the <a href="https://www.wits.ac.za/" target="_blank" rel="noreferrer noopener">University of the Witwatersrand</a>, author of this study. 



"This work supports [the fact] that the first inhabitants of southern Africa, the San hunter-gatherers, discovered fossils, interpreted them and integrated them in their rock art and belief system.”



<h2 class="wp-block-heading" id="h-deciphering-the-dicynodont-art">Deciphering the dicynodont art</h2>



Benoit and colleagues photographed the panel under varying light, traced outlines digitally, and matched them with museum specimens. 



The correlation, they argue, is too tight to be chance. Their work joins a handful of cases worldwide - China, Australia, North America - where Indigenous art may double as the earliest depiction of extinct animals.



The research also nudges scientists to widen their lens. Fossil discovery stories often center on explorers in pith helmets, but communities living alongside outcrops have noticed, collected, and wondered about old bones for millennia. 



Recognizing that legacy broadens the history of paleontology and honors knowledge systems that predate universities.



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



Beyond scholarly credit, the find invites fresh partnerships. Rock art sites need protection from erosion, vandalism, and mining. 



By linking paintings to fossils, heritage managers can argue for preserving whole landscapes rather than isolated walls. That approach safeguards both <a href="https://www.earth.com/news/children-played-a-spiritual-role-in-prehistoric-cave-art/" target="_blank" rel="noreferrer noopener">cultural memory</a> and the deep-time record locked in nearby strata.



The study also sparks questions for educators. Imagine guiding school groups to a shelter where a dicynodont skull rests at the foot of a painted serpent. 



Students could trace a line from 250-million-year-old mud to a 19th-century brushstroke, then to modern CT scans revealing bone microstructure. 



Such encounters make earth science tangible and show that curiosity about ancient life is a shared human trait, not an imported discipline.



<h2 class="wp-block-heading" id="h-how-is-this-dicynodont-art-possible">How is this dicynodont art possible?</h2>



Evidence that the San looked at fossils and painted what they saw does more than solve an art mystery. It stitches together culture, geology, and memory across staggering spans of time. 



In the Karoo, one can touch Triassic bone, read a 19th-century pigment trail, and hear present-day scholars debating both. Each element enriches the others. 



The Horned Serpent panel stands as a quiet reminder that the urge to understand our planet’s past didn’t begin in lecture halls - it began wherever someone knelt beside a curious rock and started to wonder.



The full study was published in the journal <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0309908" target="_blank" rel="noreferrer noopener">PLOS One</a>.



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Cave art discovery depicts an animal that went extinct 280-million-years ago, baffling scientists

The Karoo stretches across more than 150,000 square miles of...

A herd of mastodons, rhinoceroses, and giant deer once roamed freely across Earth. Their lives shaped landscapes for tens of millions of years. In a sweeping new study, scientists examined fossil records from more than 3,000 large herbivores to see how their world shifted, and how it didn’t.



An international team of researchers led by Fernando Blanco at the <a href="https://www.gu.se/" target="_blank" rel="noreferrer noopener">University of Gothenburg</a> discovered that herbivore <a href="https://www.earth.com/news/large-herbivore-extinctions-drastically-affect-forest-ecosystems/" target="_blank" rel="noreferrer noopener">ecosystems</a> remained surprisingly steady for long stretches. But they also pinpointed two pivotal moments where the balance flipped.



<h2 class="wp-block-heading" id="h-herbivores-shifted-during-climate-change">Herbivores shifted during climate change</h2>



The first ripple hit around 21 million years ago. A land bridge emerged as the ancient Tethys Sea closed. Suddenly, elephants and relatives could walk from Africa into Eurasia. Other hoofed animals, deer, pigs, rhinos, joined them.&nbsp;



“The environmental pressure was so great that the entire system underwent global reorganization,” noted Blanco. At this point, hoofed communities didn’t collapse, they reassembled. 



Larger brows­ing species with mid‑to‑high crowned molars became dominant. Network analyses of those fossil data reveal a shift to a new <a href="https://www.earth.com/news/animals-with-high-body-temperatures-often-become-herbivores/" target="_blank" rel="noreferrer noopener">system</a> across continents, the first major global transformation in herbivore functional types.



Roughly ten million years later, another reinvention unfolded, this time silently. A cooling, drying climate expanded grasslands worldwide. Forest‑dwelling browsers declined. Grazers equipped with tougher teeth spread.



A functional tipping point followed, reshaping the roles of herbivores again. Grazers and mixed feeders dominated, equipped with both high‑ and low‑crowned teeth. From then on, functional diversity began a long decline, a trend scientists trace onward through the <a href="https://ucmp.berkeley.edu/quaternary/ple.html" target="_blank" rel="noreferrer noopener">Pleistocene</a> and beyond.



<h2 class="wp-block-heading" id="h-different-species-same-ecosystem-structure">Different species, same ecosystem structure</h2>



“It’s like a football team changing players during a match but still keeping the same formation. Different species came into play but they fulfilled similar ecological roles, so the overall structure remained the same,” explained Ignacio A. Lazagabaster of CENIEH in Spain. 



Despite these transformations, the ecosystem backbone remained intact. Even as mastodons, woolly mammoths, and giant rhinos disappeared in the last 129,000 years, the roles they played weren’t lost. 



The network models show that after these extinctions, community configurations, known as continental functional faunas, remained remarkably consistent.



That consistency holds through the last 4.5 million years, reflecting resilience through ice ages and environmental upheavals. Still, the team warns that modern <a href="https://www.earth.com/news/tricking-animals-with-odor-could-save-plants-from-browsing-damage/" target="_blank" rel="noreferrer noopener">biodiversity</a> loss is happening much faster - and could trigger a third tipping point before ecosystems can adjust.



<h2 class="wp-block-heading" id="h-why-these-transitions-matter-now">Why these transitions matter now</h2>



Functional diversity began declining around 10 million years ago, during the spread of C4 grasses and shrinking forests. As herbivores with specialized teeth rose to dominance, the global count of functional roles dropped by about 65 percent in roughly 5 million years.&nbsp;



The drop intensified around 2.5 million years ago with glacial cycles and major biotic exchanges, like <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC2987556/" target="_blank" rel="noreferrer noopener">the Great American Interchange</a>.



Still, the overall shape of ecosystems held firm. The continents shared similar functional configurations even as roles vanished. But today, the authors caution, biodiversity is receding much faster. They warn that another irreversible reorganization may soon be triggered.



<h2 class="wp-block-heading" id="h-herbivores-and-modern-changes">Herbivores and modern changes</h2>



<a href="https://stri.si.edu/story/hungry-megaherbivores" target="_blank" rel="noreferrer noopener">Megaherbivores</a>, those weighing more than a ton, have largely vanished. <a href="https://www.britannica.com/animal/proboscidean" target="_blank" rel="noreferrer noopener">Proboscideans</a>, which once numbered up to 33 species, now survive as just a handful. Yet scientists estimate that they comprised only about 15-18 percent of functional types in most regions. Their loss reduces ecosystem richness but didn’t break the system.



“We may soon reach a third global tipping point, one that we’re helping to accelerate,” said Juan L. Cantalapiedra of Spain’s <a href="https://www.mncn.csic.es/es" target="_blank" rel="noreferrer noopener">MNCN</a>.



The study highlights the importance of large herbivores in ecosystem function. Conservation efforts that protect or reintroduce them could help restore key ecological roles lost in recent millennia.



<h2 class="wp-block-heading" id="h-signals-from-the-fossil-record">Signals from the fossil record</h2>



The fossil record offers a rare, long-term perspective on ecological resilience. By tracking traits like <a href="https://www.sciencedirect.com/science/article/pii/S1349007922000895" target="_blank" rel="noreferrer noopener">tooth morphology</a> and body size across thousands of extinct herbivores, the researchers built a detailed picture of how animals responded to shifting <a href="https://www.earth.com/news/arctic-grazers-secretly-shape-plant-growth-and-survival/" target="_blank" rel="noreferrer noopener">environments</a> over time. 



The team's data-driven approach captured how new species stepped into familiar roles, even after dramatic losses. The research reveals a disconnect between species loss and system collapse. 



While many individual species disappeared, their ecological roles often lived on through new players. That buffering capacity is what kept herbivore ecosystems functionally stable for 60 million years. The question now is whether that same resilience can hold under today’s faster pace of change.



<h2 class="wp-block-heading" id="h-protecting-the-roles-of-herbivores">Protecting the roles of herbivores</h2>



Ancient ecosystem changes took thousands to millions of years to unfold. Humans are transforming biodiversity on century scales. This study shows that large herbivore communities can adapt to change - but only up to a point.



If current declines continue, we risk triggering a shift beyond recovery. Protecting the functional diversity of herbivores is as crucial as protecting population numbers. 



Restoring or preserving herbivore populations may help systems stay resilient as conditions continue to change.



The study is published in the journal <a href="https://www.nature.com/articles/s41467-025-59974-x" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



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Herbivores survived millions of years of change - but now face a modern crisis

A herd of mastodons, rhinoceroses, and giant deer once roamed...

A year-long experiment on a Central Valley dairy farm has confirmed that sealing manure lagoons under gas-tight tarps can trap roughly 80 percent of the methane they would otherwise release.



By capturing the gas and sending it to fuel markets, the system turns a potent climate threat into a usable resource.



Led by researchers from the <a href="https://www.ucr.edu/" target="_blank" rel="noreferrer noopener">University of California, Riverside</a> (UCR), the study gives the first independent, year-over-year check on dairy “digesters” that California regulators have counted on to meet aggressive methane-cutting goals.



More than 130 such systems already dot the state’s milk belt. Until now, officials had relied mainly on engineering models to judge their effectiveness.



<h2 class="wp-block-heading" id="h-capturing-methane-gas-on-a-dairy-farm">Capturing methane gas on a dairy farm</h2>



The test site sits in Tulare County, the nation’s top milk-producing region. Hot summers keep open manure ponds bubbling like low-grade cauldrons, releasing <a href="https://www.earth.com/news/how-ai-can-help-reduce-methane-emissions-from-cows/" target="_blank" rel="noreferrer noopener">methane</a> that warms the planet more than 80 times faster than carbon dioxide over two decades.



Engineers solved the problem by floating a heavy, flexible cover across the lagoon and piping the captured gas through scrubbers before sending it to truck fleets as a low-carbon diesel replacement.



“The digesters can leak, and they sometimes do,” said Francesca Hopkins, the UCR climate scientist who led the work. “But when the system is built well and managed carefully, the emissions really drop. That’s what we saw here.”



<h2 class="wp-block-heading" id="h-measuring-the-invisible"><a></a>Measuring the invisible</h2>



Hopkins’ team set up mobile gas analyzers inside a white research van. For 12 months before construction and twelve months after, they drove grid patterns around the dairy, logging hundreds of methane readings under different winds and <a href="https://www.earth.com/news/arctic-warming-fuels-dangerous-methane-feedback-loop/" target="_blank" rel="noreferrer noopener">temperatures</a>.



The before-and-after comparison showed an 80 percent decline in methane drifting off the property once the cover and piping were in place.



That figure lines up closely with the reduction assumed in California’s official climate inventory.



Most earlier studies had relied on short snapshots or on-site sensors. The new roaming approach captured seasonal swings, day-night cycles, and operational hiccups, providing a more realistic picture of performance over time.



<h2 class="wp-block-heading" id="h-leaks-fixes-and-fast-improvements"><a></a>Leaks, fixes, and fast improvements</h2>



During early tests the team picked up sudden methane spikes. They alerted <a href="https://calbioenergy.com/" target="_blank" rel="noreferrer noopener">California Bioenergy</a>, the company that built and operates the digester. Technicians located torn seams and loose joints, repaired them, and the plumes vanished on subsequent drives.



“This was a textbook case of adaptive management,” Hopkins said. “The partnership between scientists, the company, and the farmer really made a huge difference.”



The episode underlines a broader lesson: digesters work best when operators monitor them closely and move quickly to plug leaks.



California’s new fleet of methane-tracking satellites could help, flagging large plumes so ground crews can respond in days instead of months.



<h2 class="wp-block-heading" id="h-other-pollutants-remain-untouched">Other pollutants remain untouched</h2>



Digesters leave other pollution untouched. They do not curb <a href="https://www.earth.com/news/new-green-tech-ammonia-fertilizer-production-using-earths-natural-forces/" target="_blank" rel="noreferrer noopener">ammonia</a>, a lung-irritating gas, or tiny airborne particles that can hang over dairy counties on still summer days. 



The hardware is also expensive. Farmers need permits, financing, and maintenance contracts to keep covers inflated and engines running.



“They’re not for every farm,” Hopkins said. “But for dairies that can make it work, this is one of the most cost-effective ways we have to cut these <a href="https://www.earth.com/news/2023-climate-change-report-record-high-temperatures-greenhouse-gases-sea-level-rise/" target="_blank" rel="noreferrer noopener">greenhouse gas emissions</a>.”



California’s climate program helps in this regard by awarding low-carbon fuel credits for each ton of methane kept out of the air. Those credits, sold to oil companies that need to hit clean-fuel targets, can repay installation costs in a few years.



<h2 class="wp-block-heading" id="h-slashing-methane-emissions-from-dairy-farms">Slashing methane emissions from dairy farms</h2>



State agencies plan to slash dairy methane 40 percent below 2013 levels by 2030. The new study suggests that target remains within reach if existing digesters keep performing and more come online. 



The research also shows that rigorous, transparent monitoring can build confidence among regulators, industry, and local communities.



“There’s so much division in the climate space,” Hopkins said. “But this is a real example of cooperation that leads to measurable results.”



Digesters will not solve every problem tied to large-scale dairying, yet the Tulare County project proves they can deliver the climate benefit promised on their labels.



With careful design, vigilant upkeep, and open data, farms can turn what was once a methane plume into fuel for trucks, revenue for operators, and progress toward a lower-carbon future.



The study is published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1111/gcbb.70047">Global Change Biology Bioenergy</a>.



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Dairy farms can join the climate fight by trapping methane

A year-long experiment on a Central Valley dairy farm has...

Researchers have launched a database that tracks the maximum body size of over 85,000 marine animal species. This resource spans creatures from tiny zooplankton to massive whales.



“Put simply, biologists have tended to focus on bigger organisms. And as a result, a lot of our understanding of how marine food webs and ecosystems work is based on knowledge of these larger <a href="https://www.earth.com/news/how-ocean-animals-connect-countries-and-continents/" target="_blank" rel="noreferrer noopener">species</a>,” said study co-author Dr. Tom Webb from the <a href="https://www.sheffield.ac.uk/" target="_blank" rel="noreferrer noopener">University of Sheffield</a>.



For decades, marine science has placed the most emphasis on large species. Now, smaller species are getting some attention. Including them matters because they make up most of marine biodiversity and play vital ecosystem roles.



<h2 class="wp-block-heading" id="h-why-size-matters-in-marine-species">Why size matters in marine species</h2>



Body size shapes how ocean creatures live and interact. It influences where they feed, how they move, and their chances of surviving environmental <a href="https://www.earth.com/news/world-oceans-day-2025-sustaining-what-sustains-us/" target="_blank" rel="noreferrer noopener">changes</a>.



Research confirms that size patterns help predict the ecological impact of marine species. Studies show ecosystems are organized by size, with bigger animals eating smaller ones.



Missing size data has hindered climate and conservation models. With 40% of marine species now included, scientists can make stronger predictions. They expect coverage to rise to 75% in the next two years.



The project is led by Dr. Craig R. McClain at the <a href="https://louisiana.edu/" target="_blank" rel="noreferrer noopener">University of Louisiana</a>, working with experts from Sheffield, Tufts, Stanford, Hawaiʻi, and Virginia Tech.



“Body size isn’t just a number - it’s a key to how life works,” said Professor McClain. "This database fills a critical information gap and offers a fresh perspective on ocean biodiversity."



<h2 class="wp-block-heading" id="h-how-tech-helped-gather-size-data">How tech helped gather size data</h2>



The creation of MOBS relied on automated data mining tools that pulled species measurements from thousands of publications and records.



Advances in machine learning helped standardize inconsistent formats and reduce manual entry time.



The researchers also used global taxonomy systems like <a href="https://www.marinespecies.org/about.php" target="_blank" rel="noreferrer noopener">WoRMS</a> to verify species names and classifications. This integration ensured that their data could be reliably linked with other major marine datasets.



<h2 class="wp-block-heading" id="h-a-massive-marine-dataset">A massive marine dataset</h2>



Known as <a href="https://onlinelibrary.wiley.com/doi/10.1111/geb.70062" target="_blank" rel="noreferrer noopener">MOBS</a> (Marine Organismal Body Size Database), it records maximum measures like length, width, and height - standardized across 30 marine animal phyla. The initial release includes 85,204 species and over 181,000 size entries.



The data draws from scientific literature, museum records, and online repositories. It’s open source and freely available through <a href="https://github.com/crmcclain/MOBS_OPEN" target="_blank" rel="noreferrer noopener">GitHub</a>.



With size data spanning tens of thousands of species, scientists can now explore how body size evolved across different lineages. 



They can test long-standing theories about how environmental pressures, such as ocean depth or temperature, shaped the evolution of size in marine animals.



The database also enables comparisons between extinct and living species. By integrating fossil records, researchers can trace size shifts over time and investigate extinction patterns related to body size across evolutionary history.



<h2 class="wp-block-heading" id="h-smaller-species-bigger-blind-spots">Smaller species, bigger blind spots</h2>



Scientists are already using MOBS to explore biases in <a href="https://www.earth.com/news/national-dolphin-day-2025-honoring-the-oceans-most-playful-minds/" target="_blank" rel="noreferrer noopener">species</a> documentation. Smaller marine species often get overlooked in biodiversity surveys, raising questions about conservation priorities.



Researchers are also analyzing how body size changes with climate shifts. Since size affects metabolism and vulnerability, this insight is critical for forecasting ecosystem responses.



This database has real-world implications. Fishing large species disrupts food webs, and those effects ripple down to smaller prey.



Now models can account for these interactions accurately. Insights from birds show larger species face higher extinction risk. A robust marine size dataset may reveal similar trends, improving risk assessment and policy interventions.



<h2 class="wp-block-heading" id="h-protecting-small-vulnerable-species">Protecting small, vulnerable species</h2>



Policymakers and fisheries managers can use size data from MOBS to better regulate marine harvests. Knowing the size structure of species helps design catch limits that maintain ecological balance and prevent overexploitation.



The database also supports marine spatial planning. Regions with high concentrations of small or vulnerable species can be prioritized for conservation zones, improving how resources are allocated for ocean protection.



The project aims to integrate with <a href="https://obis.org/" target="_blank" rel="noreferrer noopener">OBIS</a> (Ocean Biodiversity Information System) and other marine data platforms, enabling spatial and ecological mapping.



With open-source access, the database invites global contributions. Scientists worldwide can suggest updates, correct errors, and share measurements, promoting a community-based science model.



<h2 class="wp-block-heading" id="h-marine-education-and-citizen-science">Marine education and citizen science</h2>



The open-access nature of the MOBS database also opens doors for educators and citizen scientists. Teachers can use real species data in classrooms to introduce students to marine biology, ecology, and data science.



Citizen science groups can incorporate the database into biodiversity monitoring projects. Having access to maximum body size info helps with field identification, ecosystem modeling, and community-led marine conservation initiatives.



<a href="https://www.earth.com/news/sand-extraction-is-an-overlooked-threat-to-marine-ecosystems/" target="_blank" rel="noreferrer noopener">Ocean ecosystems</a> face mounting stress. Climate change, overfishing, and habitat damage threaten marine life.



This dataset gives conservationists better tools to understand and protect ocean biodiversity. By grounding strategies in data that span tiny plankton to whales, MOBS bridges ecological gaps and supports stronger conservation efforts.



The study is published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1111/geb.70062" target="_blank" rel="noreferrer noopener">Global Ecology and Biogeography</a>.



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Body size of 85,000 marine species mapped in new database

Researchers have launched a database that tracks the maximum body...

Measuring around 1 inch in length with a wingspan of approximately 2.7 inches, an ancient cicada <a href="https://www.earth.com/news/fossil-discovery-pushes-back-reptile-evolution-by-40-million-years/">fossil</a> has captured attention for preserving detailed wing veins. Researchers suggest it was part of a family of “true” singing <a href="https://www.nature.org/en-us/get-involved/how-to-help/animals-we-protect/what-to-know-about-brood-x-cicadas/">cicadas</a> that are still common across many warm regions today.



Experts were intrigued by the fossil’s nearly complete form. Its wings, pressed against stone, showed patterns seldom seen in insects so old. 



<h2 class="wp-block-heading" id="h-how-the-cicada-fossil-was-found">How the cicada fossil was found</h2>



The study was led by <a href="https://www.researchgate.net/scientific-contributions/Hui-Jiang-2134327699" target="_blank" rel="noreferrer noopener">Dr. Hui Jiang</a> at the <a href="https://www.uni-bonn.de/en/home" target="_blank" rel="noreferrer noopener">University of Bonn</a> in Germany.



Their team examined layers of rock at the <a href="https://whc.unesco.org/en/list/720/" target="_blank" rel="noreferrer noopener">Messel Pit</a> in Germany. This site is famous for producing remarkable fossils of birds, mammals, and insects.



Scientists say the rocks where the insect was found date to about 47 million years ago. They report that the cicada’s wings and body were flattened in the sediment, leaving behind fine details.



<h2 class="wp-block-heading" id="h-connecting-to-an-older-lineage">Connecting to an older lineage</h2>



Researchers identified this fossil as part of the tribe <a href="https://www.inaturalist.org/taxa/335506-Platypleurini" target="_blank" rel="noreferrer noopener">Platypleurini</a>, which usually thrives in tropical and subtropical regions across Africa and Asia. 



The presence of this group in ancient Europe challenges previous ideas about how these insects were distributed.



Some investigators think this newly described species, Eoplatypleura messelensis, shared characteristics with modern relatives that sing loudly during summer. That links its lineage to cicadas found in similar climates where humidity and warmth are typical.



“We can’t know the exact song,” said Dr. Hui Jiang. His team proposes the ancient cicada likely produced sounds using <a href="https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/tymbal" target="_blank" rel="noreferrer noopener">tymbals</a>, structures that vibrate to create loud calls.



Because the fossil’s body appears a bit broader than most living cicadas, the males (though not found in these particular specimens) might have produced especially powerful tones. It is possible they reached volumes as high as today’s species or even beyond.



<h2 class="wp-block-heading" id="h-cicada-fossil-was-in-a-volcanic-lake">Cicada fossil was in a volcanic lake</h2>



Scientists explain that an ancient volcanic lake once covered the Messel Pit. Its lower layers had very low oxygen levels, which helped preserve organic material without rapid decay.



Sediments in the lake bed were so fine that delicate features, including wing veins, could fossilize. Research teams have uncovered many insects here, yet this cicada stands out for its intact body and wings.



Prior to this find, the earliest recognized members of this singing-cicada family were traced to other regions tens of millions of years ago. 



This fossil’s age adjusts the timeline for when these creatures established themselves outside Africa and Asia.



“Such discoveries would assist in providing better calibrations for determining a more realistic evolutionary rate,” said <a href="https://naturalhistory.si.edu/staff/conrad-labandeira" target="_blank" rel="noreferrer noopener">Dr. Conrad Labandeira</a> from the <a href="https://naturalhistory.si.edu/" target="_blank" rel="noreferrer noopener">Smithsonian Museum of Natural History</a>. That might reshape estimates of when and where these insects roamed.



<h2 class="wp-block-heading" id="h-filling-evolutionary-gaps">Filling evolutionary gaps</h2>



The <a href="https://www.earth.com/news/tooth-enamel-analysis-suggests-early-eurasians-were-multiple-species-paranthropus-robustus/">fossil</a> record for cicadas is surprisingly limited considering how widespread and noisy they are today. 



Only 44 confirmed Cicadidae fossils have been documented, making each new discovery a valuable puzzle piece for tracing their origins.



Fossils like Eoplatypleura messelensis serve as time markers for refining evolutionary trees. They help researchers test models built from molecular data and revise estimates about when key traits (like singing) first appeared.



Modern cicadas in the Platypleurini tribe often dwell in lush forests and shrubby regions with abundant moisture. The Messel region during the Eocene likely had a warm, humid climate, making it a suitable home for this insect.



By comparing wing structure and overall morphology, researchers suggest Eoplatypleura messelensis belonged to a group that probably relied on strong flight. 



This flight, combined with its potential for loud calls, would have helped it find mates and avoid predators in a dense forest canopy.



<h2 class="wp-block-heading" id="h-modern-cicada-cousins">Modern cicada cousins</h2>



One modern relative, the African cicada <a href="https://entnemdept.ufl.edu/walker/ufbir/chapters/chapter_24.shtml" target="_blank" rel="noreferrer noopener">Brevisana brevis</a>, reaches almost 107 decibels. That is close to a jet taking off. In eastern North America, periodical cicadas often reach 90 to 100 decibels, which is about the roar of a subway.



Next year, <a href="https://cicadas.uconn.edu/broods/brood_14/" target="_blank" rel="noreferrer noopener">Brood XIV</a> will emerge in the eastern United States. Its members appear every 17 years in billions, stirring excitement among enthusiasts who gather to witness the spectacle. 



Whether Eoplatypleura messelensis made a similar commotion remains unknown, but the findings hint at a shared ancestry for ear-splitting calls.



<h2 class="wp-block-heading" id="h-shifting-climates-shrinking-ranges">Shifting climates, shrinking ranges</h2>



This Messel Pit cicada might inspire deeper questions about cicada movements across continents. Scientists are eager to find more <a href="https://www.earth.com/news/archaeopteryx-fossil-soft-tissue-flight-evolution-proves-darwin-right/">fossil</a> material that could reveal how these insects adapted through changing climates.



They also hope that additional specimens from Messel will confirm how early European populations compared to their modern kin in Africa and Asia. That information might illuminate how cyclical Earth events influenced cicada journeys over time.



As Earth cooled after the Eocene, the once-humid regions that supported insects like Eoplatypleura messelensis began to dry and cool. 



This shift likely forced many species southward or into extinction, helping explain why today’s Platypleurini are mostly found in tropical zones.



Evidence suggests that ancient Europe supported a much richer variety of Cicadidae species than it does today. The <a href="https://www.earth.com/news/romers-gap-in-the-fossil-record-now-filled-in-with-tetrapod-discovery-westlothiana-lizziae/">fossil</a> record, especially from Messel and other European sites, shows a stark contrast to the low cicada diversity now seen in regions like Germany.



The study is published in <a href="https://www.nature.com/articles/s41598-025-94099-7" target="_blank" rel="noreferrer noopener">Scientific Reports</a>.



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Scientists find a 47-million-year-old cicada fossil that has even preserved the details of its wings

Measuring around 1 inch in length with a wingspan of...

Having itchy skin is a familiar annoyance for some families, and certain children seem to be hit harder than others. Why do these youngsters develop <a href="https://www.nhs.uk/conditions/atopic-eczema/">atopic eczema</a> when their friends do not - especially if they share similar environments?



A research team has been looking into whether a child’s genetic profile influences the risk of eczema. 



After reviewing a set of data involving children from several countries, the experts uncovered hints that a household <a href="https://www.earth.com/news/national-puppy-day-2025-where-happiness-meets-responsibility/" target="_blank" rel="noreferrer noopener">dog</a> might help offset some of the genetic factors behind itchy skin irritation.



Professor Sara Brown from the University of Edinburgh’s <a href="http://The Institute of Genetics and Cancer https://g.co/kgs/DQMJEzs" target="_blank" rel="noreferrer noopener">Institute of Genetics and Cancer</a> and Dr. Marie Standl from <a href="https://www.helmholtz-munich.de/" target="_blank" rel="noreferrer noopener">Helmholtz Munich</a> contributed to this work and brought fresh insight into how these influences might unfold for families everywhere.



<h2 class="wp-block-heading" id="h-understanding-eczema-in-children">Understanding eczema in children</h2>



Eczema involves red, inflamed patches that can be difficult to soothe. This condition arises from a blend of inherited makeup and influences such as early-life bacterial contact or exposure to specific animals. 



Having a family history of dry skin issues does not guarantee a child will develop it, but it raises the odds.



Scientists have wondered why certain kids with a genetic variant live free of symptoms while others encounter a lifetime of creams and lotions. 



Studies from the <a href="https://www.cdc.gov/nchs/products/databriefs/db460.htm#Key_finding" target="_blank" rel="noreferrer noopener">Centers for Disease Control and Prevention</a> note that 7.3% of adults aged 18 and over have eczema.



Experts have long suspected that <a href="https://www.earth.com/news/are-dogs-replacing-children-how-modern-society-is-changing/" target="_blank" rel="noreferrer noopener">dogs</a> might play a protective part for some children, and this new investigation adds support to that theory.



<h2 class="wp-block-heading" id="h-dogs-may-protect-children-from-eczema">Dogs may protect children from eczema</h2>



Families with a pet dog often report that their kids seem to have fewer episodes of skin flare-ups. The researchers wanted to see if this pattern held up at a molecular level. 



They focused on a segment of DNA near the interleukin-7 receptor (<a href="https://pubmed.ncbi.nlm.nih.gov/17660817/" target="_blank" rel="noreferrer noopener">IL-7R</a>), which helps the body regulate immune cells.



“We know that genetic make-up affects a child’s risk of developing eczema and previous studies have shown that owning a pet dog may be protective,” said Professor Brown. 



One part of the study found that children with a slight twist in that gene could sidestep the usual risk for eczema if they had a <a href="https://www.earth.com/news/why-our-relationships-with-dogs-matter-so-much/" target="_blank" rel="noreferrer noopener">dog</a> in their household early in life.&nbsp;



<h2 class="wp-block-heading" id="h-siblings-might-help-reduce-eczema-risk">Siblings might help reduce eczema risk</h2>



Scientists have also noticed that having older brothers or sisters might offer some protection. Observations point to a possible link between exposure to unique bacteria from siblings and a child’s reaction to environmental triggers. 



Further research is needed to confirm how varied bacterial environments influence the genetic component of eczema.



“Not every preventive measure works for everyone, and that’s precisely why gene-environment studies are crucial,” said Dr. Standl. 



Families sometimes consider adding a second child or adopting a <a href="https://www.earth.com/news/dogs-suffer-from-the-january-blues-just-like-humans/" target="_blank" rel="noreferrer noopener">dog</a> to reduce eczema risk. Not every measure works for everyone.&nbsp;



<h2 class="wp-block-heading" id="h-dogs-don-t-work-for-every-eczema-case">Dogs don’t work for every eczema case</h2>



Scientists emphasize that having a dog from day one does not guarantee eczema-free skin. The recent work did not examine the effects of dogs on treating existing cases of eczema. 



Many professionals caution that introducing an animal might irritate symptoms that are already present.



The researchers suggest that contact with dog-related bacteria might shape a child’s immune response in ways that shift how that interleukin-7 receptor behaves. 



Though this gene variation is not the only cause of eczema, it appears to be important in controlling inflammation. Early-life dog exposure could modify that gene’s effect so the skin’s defensive barriers stay in better shape.



<h2 class="wp-block-heading" id="h-why-diversity-in-research-matters">Why diversity in research matters</h2>



The latest findings draw primarily from white European participants, prompting calls for more studies in other populations. 



Eczema affects millions of people <a href="https://nationaleczema.org/eczema-facts/" target="_blank" rel="noreferrer noopener">worldwide</a>, including groups with differing genetic backgrounds. A broader pool of participants will help clarify how these discoveries apply to families everywhere.



Parents often wonder if a dog in the home might lower the odds of their child facing red, itchy skin every night. These early results support the idea that dog ownership might help in specific genetic situations. 



More data from a wider range of people will show whether the same pattern exists in other populations.



<h2 class="wp-block-heading" id="h-eczema-genetics-and-the-future">Eczema, genetics, and the future</h2>



Experts continue exploring the interplay between genetic traits and outside factors to better understand why some children develop eczema. They aim to refine the science so parents have straightforward answers about potential lifestyle steps. 



Future work may also investigate whether other pets or environmental exposures shape this immune balance.



The study team believes that continuing to map the roles of various gene variants could open the door to targeted prevention. 



Parents can stay alert to new findings on additional ways to keep a child’s skin barrier strong. They may also want to consult a pediatrician before making major decisions, especially if a youngster already struggles with chronic irritation.



This study is published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1111/all.16605" target="_blank" rel="noreferrer noopener">Allergy</a>.



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Dogs might protect children from developing this chronic and common condition

Having itchy skin is a familiar annoyance for some families,...

With names like the blue jay and the mallard, birds are among the most familiar wildlife to the general public. Yet bird naming - where the names come from, what they mean - has remained surprisingly underexplored.



A new study offers the most detailed look yet into this world, revealing patterns that stretch from biology to mythology - and even mistaken medieval beliefs.



Researchers from <a href="https://www.nyu.edu/">New York University</a> (NYU) and the <a href="https://nhm.org/">Natural History Museum of Los Angeles County</a> have compiled a massive database of nearly 11,000 English bird names. The findings show that nearly 90 percent are based on physical or ecological traits, while just 11 percent honor people.



The project is one of the first to quantify the structure and sources behind bird naming. It comes at a time when ornithology is reexamining how these names shape public understanding and whose stories they preserve.



<h2 class="wp-block-heading" id="h-a-comprehensive-naming-atlas"><a></a>A comprehensive naming atlas</h2>



Erin Morrison is a professor in Liberal Studies at NYU and is co-lead author of the study. "Until this database, there was no quantitative way to analyze the current state of terms in English bird names,” she said. 



“In addition to showing that a very small percentage of <a href="https://www.earth.com/news/all-birds-one-tree-complete-evolutionary-map-reveals-hidden-links/">birds</a> are named after people, the database reveals some of the terminology we use to name birds is very specialized."



"It points towards an issue with how accessible these names are, such as the isabelline shrike and the diademed sandpiper-plover, even to native English speakers.”



The resource, called the <a href="https://sites.google.com/nyu.edu/avianlexiconatlas/home">AvianLexiconAtlas</a>, includes every known English-language bird species name. It categorizes the main descriptive term into one of ten thematic groups.



<h2 class="wp-block-heading" id="h-what-bird-names-reveal">What bird names reveal</h2>



The categories range from physical characteristics, like the black-capped chickadee, to natural history traits, such as the rock pigeon. They also include cultural references and geographic ties, like the European <a href="https://www.earth.com/news/starlings-are-independent-navigators-not-copycats/">starling</a>.



Some names are straightforward: the yellow-rumped warbler clearly reflects a visual trait. Others, like Wilson’s warbler or Bonaparte’s gull, reference historical figures. 



These names often reflect who discovered or classified the species more than the birds themselves. Still others - such as the barnacle goose, once thought to hatch from barnacles - have roots in outdated folklore.



<h2 class="wp-block-heading" id="h-renaming-effort-underway">Renaming effort underway </h2>



Allison Shultz is co-lead author and curator of ornithology at the Natural History Museum of Los Angeles County.



“The work gives us a rich insight into how birds are named overall,” she said. “Those naming processes can reflect all the strangeness and specificity of the people naming them, their culture, and their history - things that wouldn’t help tell you what a bird looks like.”



This disconnect between name and meaning is central to growing debates in ornithology. Names that once honored explorers or scientists are now being reconsidered. Institutions like the <a href="https://americanornithology.org/">American Ornithological Society</a> are moving to rename all species currently named after people.



The new study offers hard data to guide that shift, revealing just how few species actually fall into that category.



<h2 class="wp-block-heading" id="h-changing-how-we-name-birds">Changing how we name birds</h2>



Common names are often the public’s main entry point to a species. Just as “California <a href="https://www.earth.com/news/can-animals-feel-the-beat-ronan-the-sea-lion-might-just-prove-it/">sea lion</a>” or “brown bear” might quickly convey meaning, bird names should do the same - but many don’t.



“In ornithology, there has been significant reflection among both professional researchers and amateur naturalists about what the terminology in regionally standardized English-language common names should communicate about species of birds,” Morrison noted.



The database could help guide future renaming decisions. It offers a consistent reference for how names are formed, what they signal, and whether they help or hinder understanding.



<h2 class="wp-block-heading" id="h-classroom-idea-becomes-global-tool">Classroom idea becomes global tool</h2>



The project began in Morrison’s Life Science class at NYU in fall 2022, when students identified what type of descriptor formed the basis of a bird’s name.



They examined thousands of names and sorted them into categories: size, behavior, habitat, <a href="https://www.earth.com/news/from-dinosaurs-to-birds-the-mysterious-origin-of-feathers/">plumage</a>, geography, or human reference.



“We found that 1,000 of the 11,000 species were named after male-only plumage, but just 20 were named after female-only plumage,” Shultz said. "The orange-bellied antwren is one of the few."



Students and faculty from NYU’s Liberal Studies program contributed to the final dataset and co-authored the study.



<h2 class="wp-block-heading" id="h-making-names-more-inclusive">Making names more inclusive</h2>



The research team hopes that the AvianLexiconAtlas will serve as a foundational tool for both scientists and <a href="https://www.earth.com/news/birdwatching-can-significantly-improve-students-mental-health/">birdwatchers</a>. It includes not only the core dataset but also a glossary and a gazetteer to decode unfamiliar terms.



That may be especially helpful in parsing names like the Pincoya storm-petrel - named for a Chilean sea spirit said to dance on the waves - or the obscurely labeled baglafecht weaver.



“In the future, we look forward to combining what we learned with rich sources of data like our bird collections to understand the connections between birds and people better,” Shultz said. 



“Overall, this work provides valuable insights in helping develop approachable names that help strengthen this connection and ultimately help protect birds and nature.”



With names playing a central role in how people relate to the natural world, the project encourages a more thoughtful approach to how species are introduced, remembered, and preserved.



The study is published in the journal <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0325890">PLOS One</a>.



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Origins and oddities of bird names mapped for the first time

With names like the blue jay and the mallard, birds...

Acute diarrhea affects nearly 1 in 12 dogs annually in the UK. This stat comes from a new analysis of over 2.2 million vet health records. 



Led by Dan O’Neill at the <a href="https://www.rvc.ac.uk/" target="_blank" rel="noreferrer noopener">Royal Veterinary College</a>, this study uncovers which dogs are most at risk, what symptoms they show, and how vets treat them.



“Experiencing the dreaded ‘poonami’ with your dog is one of those events any <a href="https://www.earth.com/news/dogs-may-respond-to-each-other-through-blinking/" target="_blank" rel="noreferrer noopener">dog</a> owner fears. This new study shows that diarrhea events are very common in dogs but that owners should not panic - no matter how bad the deluge, most dogs will recover in a few days after veterinary treatment,” Dr. O’Neil noted.



<h2 class="wp-block-heading" id="h-dog-breeds-and-diarrhea-risk">Dog breeds and diarrhea risk</h2>



Some dogs are significantly more likely to suffer from diarrhea. The top at-risk <a href="https://www.earth.com/news/study-compares-dna-of-chernobyl-dogs-to-canines-living-outside-the-radiation-zone/" target="_blank" rel="noreferrer noopener">breeds</a> include Cavapoo, Maltese, Miniature Poodle, German Shepherd, Yorkshire Terrier, and Cockapoo. 



Cavapoos had the highest annual incidence risk at nearly 15 percent, followed closely by Maltese and Miniature Poodles.



Why these breeds? Genetics may play a role, but it’s also possible that lifestyle and owner behavior matter. For example, owners of popular designer crossbreeds like Cavapoos may visit vets more often, leading to more diagnoses. 



Still, even accounting for this, the odds ratios point to real predispositions, especially in Miniature Poodles and their crossbred descendants.



<h2 class="wp-block-heading" id="h-designer-breeds-face-higher-diarrhea-odds">Designer breeds face higher diarrhea odds</h2>



Designer crossbreeds like Cockapoos and Cavapoos showed a higher risk than general crossbreeds or purebreds. 



This challenges the idea that hybrid <a href="https://www.earth.com/news/dogs-can-understand-words-even-in-monotone-speech/" target="_blank" rel="noreferrer noopener">dogs</a> always benefit from hybrid vigor. Owners should be aware that these trendy dogs might need more digestive care than expected.



Interestingly, Jack Russell Terriers and Chihuahuas had lower odds of being diagnosed. These findings might help inform breed-specific guidance and early prevention efforts.



<h2 class="wp-block-heading" id="h-age-affects-dog-diarrhea-risk">Age affects dog diarrhea risk</h2>



Age stood out as a major factor. Dogs under 3 years and over 9 years had significantly higher odds of diarrhea. Puppies may eat things they shouldn’t. Older dogs might suffer due to weakened gut health or age-related illness.



The researchers found that very young dogs (under the age of one) had 2.4 times the odds of diarrhea compared to middle-aged dogs. Dogs over 14 had nearly 2.6 times the odds. For both groups, careful diet and close monitoring are key.



<h2 class="wp-block-heading" id="h-common-symptoms-and-what-to-expect">Common symptoms and what to expect</h2>



For most of the dogs in the study, diarrhea was accompanied by other symptoms. Vomiting was seen in 44 percent of cases. Reduced appetite affected 28 percent, and 24 percent were lethargic. A smaller group of dogs (about 13 percent) showed signs of abdominal pain.



Roughly 29 percent of the cases were classified as hemorrhagic (bloody). Surprisingly, blood in stools did not increase the likelihood of lab testing on the first vet visit.



<h2 class="wp-block-heading" id="h-simple-care-for-dog-diarrhea">Simple care for dog diarrhea</h2>



Most cases were managed with supportive care. Probiotics were used in 60 percent of cases. Dietary changes were prescribed in 44 percent. 



Antibiotics, though discouraged for mild cases, were still used in 38 percent of all cases. The most common was oral metronidazole.



Even more striking, 59 percent of hemorrhagic cases were treated with antibiotics, despite guidelines saying they usually should not be. These decisions seem driven by concern for the dog’s well-being and owner anxiety, not always evidence-based need.



<h2 class="wp-block-heading" id="h-is-antibiotic-overuse-a-problem">Is antibiotic overuse a problem?</h2>



Veterinary experts have warned about this for years. Antibiotics should not be the go-to for uncomplicated diarrhea. 



Overuse of antibiotics heightens the risk of resistance and gut microbiome imbalance. Yet, fear of client dissatisfaction and ingrained habits keep antibiotics in play.



A recent European panel strongly advised against giving antibiotics to dogs with mild or moderate diarrhea, even if it’s bloody. They emphasize fluid therapy and dietary support instead.



<h2 class="wp-block-heading" id="h-what-should-dog-owners-do">What should dog owners do?</h2>



Don't panic. Over 80 percent of diarrhea cases resolved with just one vet visit. Most <a href="https://www.earth.com/news/why-our-relationships-with-dogs-matter-so-much/" target="_blank" rel="noreferrer noopener">dogs</a> got better within a few days, even without lab tests or medication.



But stay alert if your dog is very young, elderly, or from a high-risk breed. Monitor for repeated episodes, especially if blood is present or other symptoms appear.



This study gives vets and owners something rare: data from real dogs, in real clinics, across the UK. The message is clear. Diarrhea is common, but most dogs recover fast. Awareness, not alarm, is the best first step.



The study is published in the journal <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0324203" target="_blank" rel="noreferrer noopener">PLOS One</a>.



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Some dogs have a higher risk of digestive problems like diarrhea

Acute diarrhea affects nearly 1 in 12 dogs annually in...

Life almost ended 252 million years ago. The end-Permian mass extinction wiped out 81% of marine life and over half of land-based <a href="https://www.earth.com/news/how-lizards-help-keep-madagascars-forests-alive/" target="_blank" rel="noreferrer noopener">species</a>. But not everything perished. Among the survivors were the archosauromorphs, small early reptiles that would later give rise to crocodiles, dinosaurs, and birds.



These <a href="https://www.earth.com/news/animals-found-to-have-a-sixth-sense-gecko-hearing-vibrations-changing-science-view-of-sound/" target="_blank" rel="noreferrer noopener">creatures</a> were not supposed to survive the intense heat of the early Triassic tropics. Scientists considered this zone nearly lifeless. 



<h2 class="wp-block-heading" id="h-ancient-reptiles-crossed-deadly-zones">Ancient reptiles crossed deadly zones</h2>



New research published in the journal Nature Ecology &amp; Evolution&nbsp;reveals that archosauromorphs did more than endure the deadly zone. They moved through it.



Using a modeling system called TARDIS, which maps dispersal across time and space, researchers estimated the migration routes of 392 archosauromorph species. 



The model linked fossils with landscape data and climate reconstructions, exposing hidden paths through so-called inhospitable regions.



<h2 class="wp-block-heading" id="h-climate-adaptability-and-niche-expansion">Climate adaptability and niche expansion</h2>



The study showed that these reptiles had much wider climate tolerances than fossil <a href="https://www.earth.com/news/reptile-ancestors-appeared-40-million-years-earlier-than-we-thought/" target="_blank" rel="noreferrer noopener">evidence</a> alone suggested. They adapted to extreme environments, including hot and dry zones with high temperature seasonality and low rainfall.



This ability to cross geographic and climatic barriers helped them enter new ecological niches. These movements likely shaped the evolutionary path that led to the rise of dinosaurs.



<h2 class="wp-block-heading" id="h-how-ancient-reptiles-outlived-extinction">How ancient reptiles outlived extinction</h2>



“Amid the worst climatic event in Earth’s history, where more <a href="https://www.earth.com/news/fossil-discovery-pushes-back-reptile-evolution-by-40-million-years/" target="_blank" rel="noreferrer noopener">species</a> died than at any period since, life still survived," said Dr. Joseph Flannery-Sutherland from the <a href="https://www.birmingham.ac.uk" target="_blank" rel="noreferrer noopener">University of Birmingham</a>, who led the study.



"We know that archosauromorphs as a group managed to come out of this event and over the Triassic period became one of the main players in shaping life thereafter."



“Gaps in their fossil record have increasingly begun to tell us something about what we weren’t seeing when it comes to these reptiles. Using our modeling system, we have been able to build a picture of what was happening to the archosauromorphs in these gaps and how they dispersed across the ancient world."



According to Dr. Flannery-Sutherland, the results of the study suggest that these reptiles were much hardier to the extreme climate of the Pangaean tropical dead zone, able to endure these hellish conditions to reach the other side of the world. 



"It’s likely that this ability to survive the inhospitable tropics may have conferred an advantage that saw them thrive in the Triassic world," he noted. 



<h2 class="wp-block-heading" id="h-tracking-evolutionary-radiation">Tracking evolutionary radiation</h2>



The paper describes how the reptiles’ dispersal began in the northern supercontinent Laurasia. Over time, they crossed Central Pangaean mountains and entered southern Gondwana. 



By the Wordian stage, long-distance movements had begun. These ancient reptiles not only traveled across land but also ventured into regions that lacked any fossil record. These regions were once thought off-limits.



The team found that climate conditions during these travels included both very high temperatures and arid environments. Their movement wasn’t random. It often followed low-elevation coastal routes, sometimes aided by monsoon-like humidity along ancient seashores.



“The evolution of life has been controlled at times by the environment, but it is difficult to integrate our limited and uncertain knowledge about the ancient landscape with our limited and uncertain knowledge about the ecology of extinct organisms," noted Professor Michael Benton, senior author of the study.



"But by combining the fossils with reconstructed maps of the ancient world, in the context of evolutionary trees, we provide a way of overcoming these challenges.” 



<h2 class="wp-block-heading" id="h-capturing-the-full-story-of-reptiles">Capturing the full story of reptiles</h2>



The oldest fossils were found in Europe, but that may reflect better sampling rather than true origins. The study's models show that archosauromorphs could have existed elsewhere long before they appeared in the fossil record. 



In fact, dispersal paths into South America and North America predate the oldest known fossils there by up to 15 million years.



By measuring climate variables along these ancient migration routes, the researchers captured broader ecological diversity than fossils alone could show. This reveals how species adapted as they moved through different environments.



<h2 class="wp-block-heading" id="h-tracking-other-ancient-animals">Tracking other ancient animals</h2>



The authors suggest that similar modeling approaches could apply to other ancient lineages with poor fossil records. By coupling evolutionary trees with climate and terrain data, scientists can rebuild missing chapters of evolutionary history.



These early reptiles didn’t just bounce back from catastrophe. They reshaped their world through resilience and movement. Their journey laid the groundwork for the age of dinosaurs and ultimately modern birds and crocodiles.



The study is published in the journal <a href="https://www.nature.com/articles/s41559-025-02739-y" target="_blank" rel="noreferrer noopener">Nature Ecology &amp; Evolution</a>.



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Reptiles survived 'hellish' conditions during Earth's worst climate crisis

Life almost ended 252 million years ago. The end-Permian mass...

Forests, mountains, and deserts are home to a quiet and elusive animal: the cougar. Often overlooked and frequently misunderstood, this powerful predator plays a vital role in North America’s ecosystems. 



On National Cougar Day, June 12, 2025, we take a closer look at the importance of this remarkable species - and the challenges it faces.



National Cougar Day isn’t just about appreciation - it’s a reminder that coexistence matters. It calls on us to learn, adapt, and do our part to protect the wild places and species that still survive alongside us.



As habitat loss and biodiversity decline continue, cougars have become a symbol of resilience. Their ability to survive in changing landscapes highlights the delicate balance of <a href="https://www.earth.com/news/cougars-hunt-smaller-prey-to-avoid-conflict-with-other-predators/" target="_blank" rel="noreferrer noopener">ecosystems</a> - and the critical role top predators play in keeping that balance intact.



<h2 class="wp-block-heading" id="h-the-cougar-s-place-in-nature">The cougar’s place in nature</h2>



Cougars, also known as mountain lions or pumas, are the most widely distributed wild cats in the Western Hemisphere. From the Canadian Yukon to the Andes Mountains of South America, these animals traverse grasslands, deserts, forests, and mountains. 



Despite their wide range, they remain elusive, mostly avoiding humans while maintaining an essential role in local <a href="https://www.earth.com/news/national-cougar-day-the-crucial-ecological-role-of-cougars/" target="_blank" rel="noreferrer noopener">ecosystems</a>.



As apex predators, cougars help control prey populations, especially deer. This influences vegetation growth and benefits many other species. A balanced food chain reduces overgrazing, supports plant diversity, and stabilizes the broader environment. 



Cougars act as nature’s regulators, making sure that no species overwhelms the rest. Their role is subtle but foundational.



<h2 class="wp-block-heading" id="h-why-national-cougar-day-was-created">Why National Cougar Day was created</h2>



National Cougar Day was established in 2019 to celebrate the ecological importance of cougars and draw attention to the threats they face.



Despite their broad range, cougars face habitat loss, human encroachment, road mortality, and lethal management policies in several states. These pressures grow stronger each year.



National Cougar Day seeks to change perceptions. It replaces fear with understanding, myth with science, and confrontation with coexistence. 



Conservation groups use the occasion to spread awareness, share research, and advocate for laws that protect cougars and the <a href="https://www.earth.com/news/apex-predators-can-help-restore-ecosystems-but-not-immediately/" target="_blank" rel="noreferrer noopener">ecosystems</a> they support.



<h2 class="wp-block-heading" id="h-a-clear-focus-in-2025">A clear focus in 2025</h2>



National Cougar Day 2025 echoes a clear message across conservation <a href="https://mountainlion.org" target="_blank" rel="noreferrer noopener">communities</a>: coexistence. 



This year, many wildlife groups are focusing on practical ways to help humans and cougars share space safely. Instead of pushing them out or hunting them down, experts are encouraging informed policies and education.



This focus matters. Urban expansion enters cougar territory more each year, increasing the chance of conflict. Without education, these encounters often lead to tragic outcomes. Most often, it is the cougar that pays the price. 



Understanding how to prevent conflict can change this trend. Learning to interpret cougar behavior and create safe environments helps both humans and animals.



Coexistence includes wildlife corridors, community education, and responsible livestock management. These strategies already show positive results in some regions. They could provide the foundation for broader, lasting harmony between people and wildlife.



<h2 class="wp-block-heading" id="h-growing-threats-to-cougars">Growing threats to cougars</h2>



Cougars are not globally endangered, but their numbers decline in certain regions. Expanding human development slices through their migration paths. Roads, fences, and housing projects isolate populations. This leads to genetic bottlenecks and weakens long-term survival.



Some U.S. states continue to allow cougar hunting under wildlife management plans. While intended to regulate populations, studies show that this often creates instability. When dominant adult cougars are killed, young males take over, leading to more unpredictable behavior and increased human conflict.



The cougar’s greatest threat is human misunderstanding. For decades, stories and media shaped a fearful image. National Cougar Day invites us to look again. Science-based policies can ensure a future where cougars and people thrive together.



<h2 class="wp-block-heading" id="h-moving-forward-with-intention">Moving forward with intention</h2>



National Cougar Day 2025 comes during a time of growing environmental awareness. Climate change, habitat loss, and biodiversity decline dominate global conversations. 



In that context, the cougar’s story offers something different. It offers hope. Unlike many species in crisis, cougars still roam across vast areas. We still have time to act wisely.



This day invites thoughtful action. Watching a documentary, reading wildlife science, or supporting a <a href="https://cougarconservancy.org/save-la-cougars" target="_blank" rel="noreferrer noopener">conservation campaign</a> can all help. Better awareness leads to smarter policies. Informed communities become protectors, not opponents.



By standing up for cougars, we stand up for healthy landscapes. Their survival means the ecosystem is still working. Their absence would show a system in collapse. 



When we protect cougars, we also protect every creature that depends on the balance they maintain.



<h2 class="wp-block-heading" id="h-significance-of-national-cougar-day">Significance of National Cougar Day </h2>



National Cougar Day is an opportunity to recognize an animal that often goes unnoticed but plays a vital role in the natural world. 



Cougars don’t demand attention - they survive quietly, shaping ecosystems simply by being part of them. But today, they face growing threats, and their future depends on our awareness and action. 



June 12 is a chance to learn, to speak up, and to support efforts that keep wild places wild - with cougars still a part of them.



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National Cougar Day 2025: Peacefully coexisting with wildlife

Forests, mountains, and deserts are home to a quiet and...

Pigs stand out among domestic animals for their intelligence, social behavior, and ability to adapt to various environments. But their historical journey from wild creatures to companions in early agricultural societies is just as compelling.



Across centuries, they have played vital roles in food systems, cultural traditions, and even scientific research. Their domestication marks not only a biological transformation but also a deepening relationship between humans and <a href="https://www.earth.com/news/from-wolves-to-dogs-did-domestication-begin-without-human-help/" target="_blank" rel="noreferrer noopener">animals</a>.



A new study, led by researchers from <a href="https://home.dartmouth.edu" target="_blank" rel="noreferrer noopener">Dartmouth</a>, offers fresh insight into that transformation. The findings trace the origins of pig domestication back nearly 8,000 years, placing the earliest known human-pig interactions in South China. 



This discovery does more than date an evolutionary milestone. It adds depth to our understanding of how early agricultural communities shaped - and were shaped by - the animals around them.



<h2 class="wp-block-heading" id="h-tracing-the-first-domesticated-pigs">Tracing the first domesticated pigs</h2>



For years, scholars believed China might be one of the centers where pigs were first <a href="https://www.earth.com/news/all-domestic-horses-have-ancestors-in-russia/" target="_blank" rel="noreferrer noopener">domesticated</a>. However, evidence remained scattered and incomplete. This new research bridges that gap. 



The study shows that pigs living near humans began to eat leftover cooked food and scavenge waste during the early Neolithic period, around 8,000 years ago. 



This was the time in which humans shifted from foraging to farming and made their earliest attempts at domestication. Among the species they tried to domesticate were wild boars - large, fierce creatures with big heads and strong teeth.



"While most wild boars are naturally aggressive, some are more friendly and less afraid of people, which are the ones that may live alongside humans," explained lead author Jiajing Wang. 



"Living with humans gave them easy access to food, so they no longer needed to maintain their robust physiques."



As a consequence, their characteristics underwent changes. "Over time, their bodies became smaller, and their brains also became smaller by about one-third," Wang said.



<h2 class="wp-block-heading" id="h-pig-teeth-reveal-early-signs-of-domestication">Pig teeth reveal early signs of domestication</h2>



Traditionally, archaeologists examine bones to detect <a href="https://www.earth.com/news/sheep-have-been-intertwined-with-humans-for-over-11000-years/" target="_blank" rel="noreferrer noopener">domestication</a>. But this method can miss early behavioral changes. "What probably came first were behavioral changes, like becoming less aggressive and more tolerant of humans," noted Wang.



So the team used a different approach. They analyzed dental calculus - plaque buildup - on 32 pig teeth. These came from ancient sites in the Lower Yangtze River region: Jingtoushan and Kuahuqiao.



Waterlogged conditions helped preserve the organic material. Researchers recovered 240 starch granules from the plaque deposits. These showed that the pigs had eaten cooked rice, yams, an unknown tuber, acorns, and grasses.



"These are plants that were present in the environment at that time and were found in human settlements," said Wang.



<h2 class="wp-block-heading" id="h-pigs-lived-closely-with-humans">Pigs lived closely with humans</h2>



The researchers found another sign of pig-human intimacy: parasite eggs. Specifically, whipworm eggs. These eggs can grow inside human intestines. They showed up in 16 pig specimens and represent the earliest archaeological evidence of human whipworm in East Asia.



"Pigs are known for their habit of eating human waste, so that is additional evidence that these pigs were probably living with humans or having a very close relationship with them," noted Wang.



Wang also added that pigs do not cook food for themselves, so were probably being fed scraps from human food, or possibly scavenging the scraps from waste sites. 



<h2 class="wp-block-heading" id="h-pig-domestication-and-scavenging">Pig domestication and scavenging</h2>



The team also studied tooth sizes. Some pigs had teeth like today’s <a href="https://www.earth.com/news/chicken-domestication-humans-timeline-silk-road-evidence/" target="_blank" rel="noreferrer noopener">domestic</a> pigs. This supports the idea that some were already under human care .



"Wild boars were probably attracted to human settlements as people started settling down and began growing their own food," said Wang. 



"These settlements created a large amount of waste, and that waste attracts scavengers for food, which in turn fosters selection mechanisms that favored animals willing to live alongside humans."



This supports the “commensal pathway” theory - animals first came for food, not because humans wanted to tame them. But Wang’s team also saw signs of the “prey pathway,” where people began managing pigs directly.



<h2 class="wp-block-heading" id="h-why-this-matters-today">Why this matters today</h2>



"Our study shows that some wild boars took the first step towards domestication by scavenging human waste," concluded Wang.



This study also highlights a key issue: living close to animals can spread diseases. Parasite transfer likely began early in human settlements.



The research involved several scholars: Yiyi Tang, Yunfei Zheng, Leping Jiang, Guoping Sun, Xiaolin Ma, and Yanfeng Hou. Their work brings us closer to understanding the long, messy, and fascinating journey of pig domestication.



The study is published in the journal <a href="https://www.pnas.org/doi/10.1073/pnas.2507123122" target="_blank" rel="noreferrer noopener">Proceedings of the National Academy of Sciences</a>.



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Biologists finally unravel the surprising story of how humans domesticated pigs

Pigs stand out among domestic animals for their intelligence, social...

Each year on June 11, the world turns its attention to a quiet predator. International Lynx Day celebrates the mysterious and solitary lynx, one of the forest’s most skilled hunters. 



In 2025, the event serves as both a tribute and a call to action. The lynx may seem invisible in the wild, but their presence shapes entire ecosystems.



This day reminds us of the delicate balance between nature and human development. It invites reflection, education, and renewed commitment to preserving the <a href="https://www.earth.com/news/protecting-lynx-habitat-in-a-shifting-landscape/" target="_blank" rel="noreferrer noopener">species</a>. As pressures on forests intensify, the lynx remains a symbol of resilience, solitude, and environmental health. 



<h2 class="wp-block-heading" id="h-a-closer-look-at-the-lynx-family">A closer look at the lynx family</h2>



The lynx belongs to a small but mighty group within the cat family. There are four distinct species: the Eurasian lynx, the Canada lynx, the Iberian lynx, and the bobcat. 



All share tufted ears, large paws, and a taste for stealth. These <a href="https://www.earth.com/news/saving-the-iberian-lynx-how-humans-rescued-this-rare-feline-from-extinction/" target="_blank" rel="noreferrer noopener">animals</a> live across varied landscapes, from snowy boreal forests to rugged Mediterranean terrain.



The Eurasian lynx is the largest, thriving in pockets across Europe and Asia. The Canada lynx, adapted for deep snow, follows the snowshoe hare's cycle. 



The Iberian lynx, once the most endangered feline in the world, roams the Iberian Peninsula. The bobcat, North America’s smallest lynx species, is widespread but often misunderstood.



Each lynx plays a vital ecological role. They keep prey populations in check, maintain healthy forests, and support biodiversity. However, despite their adaptability, these animals face rising threats that challenge their survival across the globe.



<h2 class="wp-block-heading" id="h-dramatic-recovery-of-the-iberian-lynx">Dramatic recovery of the Iberian lynx</h2>



Of all the lynx <a href="https://www.earth.com/news/canada-lynxs-historic-range-points-to-a-promising-future/" target="_blank" rel="noreferrer noopener">species</a>, the Iberian lynx’s comeback is the most dramatic. In the early 2000s, fewer than 100 individuals remained in the wild. Conservationists feared extinction. Then came a surge of action: breeding programs, habitat protection, and public awareness campaigns.



Today, there are over 2,000 Iberian lynx roaming free. The species has moved from "Critically Endangered" to "Endangered" on the <a href="https://www.iucnredlist.org" target="_blank" rel="noreferrer noopener">IUCN Red List</a>. “This is one of the greatest conservation success stories of the 21st century,” said Miguel Ángel Simón, a leading lynx conservationist in Spain.



Despite this progress, dangers persist. Lynx often fall victim to vehicle collisions. Encroaching development fragments their habitat. 



Conservation groups warn that if momentum slows, the population could stall or reverse. Continued protection, monitoring, and expansion of territory remain critical for the Iberian lynx to thrive long term.



<h2 class="wp-block-heading" id="h-habitat-fragmentation-a-shared-threat">Habitat fragmentation: A shared threat</h2>



All lynx <a href="https://www.earth.com/news/canada-lynx-survival-linked-to-life-cycle-of-snowshoe-hares/" target="_blank" rel="noreferrer noopener">species</a> depend on large, connected forests. When these habitats become isolated, their survival grows uncertain. Roads, farms, and fences block their natural movement. This not only leads to accidents but also weakens genetic diversity through inbreeding.



In Europe, rewilding efforts have reintroduced lynx to places like the Alps, Jura Mountains, and parts of the Balkans. These animals show strong adaptability when given the space. Yet gaps remain. Connectivity between territories is often poor.



In North America, especially Canada, logging and climate change impact the snowshoe hare. With their main prey in decline, lynx populations also suffer. Meanwhile, bobcats, though more resilient, struggle with suburban expansion and reduced prey.



Conservationists argue that saving lynx means more than protecting forest patches. It requires landscape-scale planning and collaboration across borders and communities.



<h2 class="wp-block-heading" id="h-honoring-international-lynx-day">Honoring International Lynx Day </h2>



This year’s International Lynx Day pushes for deeper thinking about conservation. It emphasizes both physical and emotional ties. Forests must be reconnected through wildlife corridors. But people also need to reconnect with nature and with each other.



Wildlife crossings such as green bridges and tunnels are gaining popularity. These help lynx cross busy roads without risk. Forest buffers between farms and wild zones also create safe paths. Some regions in Germany and Switzerland have already seen benefits from such solutions.



Public engagement forms the heart of these efforts. Many communities hold nature walks, host talks, and run school programs during International Lynx Day. Young people, in particular, are seen as crucial allies.



<h2 class="wp-block-heading" id="h-public-perception-and-coexistence">Public perception and coexistence </h2>



Living alongside lynx is not always easy. In some regions, livestock predation fuels resentment. Hunters sometimes see lynx as competition. But research shows that these conflicts often come from misunderstanding.



Lynx are shy and rarely seen. They prefer deer or hares to sheep or goats. Many attacks on livestock are wrongly blamed on them. 



Education and compensation schemes have helped reduce these tensions. In Portugal and Spain, coexistence training has made local farmers more willing to support lynx programs.



Art, film, and storytelling also help reshape public perception. The cultural approaches, when combined with scientific ones, create lasting change.



<h2 class="wp-block-heading" id="h-take-action-on-international-lynx-day">Take action on International Lynx Day </h2>



The lynx does not demand loud attention. It walks quietly, blends in, and keeps to itself. But its survival depends on our willingness to act. International Lynx Day challenges individuals and governments alike.



You do not need to see a lynx in the wild to help. By protecting forests, supporting conservation groups, and spreading awareness, you contribute to their survival. Every tree preserved, every corridor built, and every child educated brings the lynx closer to safety



Let this year’s celebration be more than symbolic. Let it be a turning point where connection becomes action and the silent footsteps of the lynx continue to echo through the forests for generations to come.



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International Lynx Day 2025: Protecting the silent hunters of the forest

Each year on June 11, the world turns its attention...

Each year, more than two trillion wild and farmed fish are killed to feed humanity. Their deaths often go unnoticed. Yet beneath the surface is a simple biological fact: fish can suffer.



Rainbow trout, a <a href="https://www.earth.com/news/small-fish-provide-climate-resilient-nutrition-for-a-warming-world/" target="_blank" rel="noreferrer noopener">species</a> farmed and consumed across the globe, experience not just death - but a prolonged and intense form of distress when killed by air asphyxiation. 



A new study published in the journal Scientific Reports shines a light on this pain and offers a pathway to reduce it.



<h2 class="wp-block-heading" id="h-fish-pain-needs-better-measurement">Fish pain needs better measurement</h2>



Unlike environmental impact or public health, <a href="https://www.earth.com/news/crabs-lobsters-crustaceans-feel-pain-calls-for-immediate-ban-on-boiling-them-alive/" target="_blank" rel="noreferrer noopener">animal suffering lacks a universal metric</a>. There are no equivalents to carbon footprints or life years lost. To address this, scientists developed the Welfare Footprint Framework (WFF).



This tool measures pain in minutes, allowing researchers to compare welfare outcomes across species and <a href="https://www.earth.com/news/world-oceans-day-2025-sustaining-what-sustains-us/" target="_blank" rel="noreferrer noopener">conditions</a>. The research team applied this method to trout slaughter, where air exposure is still a widely used technique.



Fish, when pulled from water, begin a slow and stressful decline. Their gills collapse. They gasp in panic. Their blood chemistry spirals. Oxygen disappears while carbon dioxide builds. 



These biological reactions unfold as the fish continues to move, gasp, and suffer - sometimes for as long as 25 minutes.



<h2 class="wp-block-heading" id="h-fish-suffer-up-to-25-minutes">Fish suffer up to 25 minutes </h2>



The researchers divided the trout's suffering into four time segments. These range from alarm at removal to the final depression of brain activity before unconsciousness. 



Through behavioral, neurological, and pharmacological evidence, the team estimated that the average trout endures about ten minutes of pain that qualifies as hurtful, disabling, or excruciating. 



In some conditions, this could stretch beyond 20 minutes. When adjusted by weight, that translates to 24 minutes of such pain per kilogram (about 11 minutes per pound) of fish killed.



The team used neurophysiological data like EEG signals and reflex loss to identify unconsciousness. They reviewed how fish respond to CO₂, pH imbalance, muscle exhaustion, and fear-inducing stimuli. Each pain level had specific criteria, ranging from annoyance to total disruption of basic functions.



<h2 class="wp-block-heading" id="h-current-methods-cause-painful-deaths">Current methods cause painful deaths</h2>



Air asphyxiation is still legal and common in many parts of the world. But it is neither quick nor painless. Chilling in ice or using ice slurry might sound gentler, yet for cold-adapted species like trout, this method just slows down metabolism. 



This can delay loss of consciousness even further, compounding the suffering. Ice exposure also risks tissue damage, thermal shock, and prolonged fear.



The research shows that suffering does not always begin at the point of slaughter. It often starts well before. 



Crowding, transport, and handling all add to the <a href="https://www.earth.com/news/fish-thought-extinct-for-85-years-reappears-in-himalayan-river-chel-snakehead/" target="_blank" rel="noreferrer noopener">fish</a>’s cumulative pain. These pre-slaughter stressors can cause physical injury and hours of distress. Yet, regulations usually overlook them.



<h2 class="wp-block-heading" id="h-stunning-can-help-fish-suffer-less">Stunning can help fish suffer less </h2>



The study evaluated two types of stunning: electrical and percussive. Electrical stunning, if properly used, could spare 60 to 1,200 minutes of suffering for every dollar spent. This makes it one of the most cost-effective welfare interventions known. 



But implementation remains inconsistent. In many commercial settings, electrical stunning fails to reliably render fish unconscious. Poor placement of electrodes, inadequate voltage, or faulty machines may undermine the potential benefits.



Percussive stunning - a physical blow to the head - has shown better consistency in lab settings. But it's difficult to scale. Fish vary in size. Equipment must be precisely calibrated. Worker fatigue also reduces effectiveness. Any slip means the fish remains conscious while bleeding out.



<h2 class="wp-block-heading" id="h-a-new-language-for-animal-pain">A new language for animal pain</h2>



What makes the Welfare Footprint Framework powerful is its transparency. Instead of assigning a fixed label to pain, it works with probabilities. If scientists believe there's a 40% chance the pain is disabling and a 40% chance it is excruciating, the framework includes both.



This makes the model flexible and more reflective of real-world uncertainty. Pain, like emotion, varies between individuals. Some fish may suffer more than others, even under identical conditions.



"The Welfare Footprint Framework provides a rigorous and transparent evidence-based approach to measuring <a href="https://www.earth.com/news/small-fish-species-are-the-big-catch-of-the-future/" target="_blank" rel="noreferrer noopener">animal</a> welfare, and enables informed decisions about where to allocate resources for the greatest impact," noted Dr. Wladimir Alonso from <a href="https://welfarefootprint.org" target="_blank" rel="noreferrer noopener">Welfare Footprint Institute</a>.



This approach mirrors models used in public health or environmental science. Just like life years lost to disease, we can now talk about minutes of suffering saved.



<h2 class="wp-block-heading" id="h-implications-for-policies-and-people">Implications for policies and people</h2>



Fish slaughter occupies only minutes in an animal’s life - but these minutes can be extremely painful. Compared to long-term reforms on farms, slaughter improvements are easier to implement and affect billions of lives. 



The study's authors argue that investing in better stunning tools and training workers can provide enormous welfare gains.



For policy makers, this research offers a scientific foundation to reform outdated practices. Certification schemes can set minimum stunning effectiveness based on real pain data. 



Governments can use this to guide humane slaughter laws. For consumers, it gives a new way to think about what ends up on their plate.



<h2 class="wp-block-heading" id="h-other-fish-suffer-too">Other fish suffer too</h2>



Though this study focused on rainbow trout, the underlying stress pathways - oxygen deprivation, acidosis, metabolic failure - are common across fish species. That means the Welfare Footprint Framework can be adapted. 



Salmon, catfish, seabass, tilapia - they all may suffer in similar ways during air exposure. However, each species will need specific data. 



Some tolerate low oxygen better. Others may react more strongly to ice. Future research must expand to include this diversity.



<h2 class="wp-block-heading" id="h-a-turning-point-for-aquatic-welfare">A turning point for aquatic welfare</h2>



The world is just beginning to reckon with the sentience of fish. For decades, their pain was denied or ignored. But science no longer allows that. 



With trillions of fish slaughtered every year, even small improvements can have vast impact.



The WFF doesn’t just measure pain. It opens a language of empathy grounded in evidence. It lets regulators, producers, and consumers weigh the cost of change. 



And perhaps, most importantly, the framework acknowledges what fish have felt all along - suffering that deserves to be seen and reduced.



The study is published in the journal <a href="https://www.nature.com/articles/s41598-025-04272-1" target="_blank" rel="noreferrer noopener">Scientific Reports</a>.



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Scientists prove fish suffer "intense pain" for at least 10 minutes after catch, calls made for reforms

Each year, more than two trillion wild and farmed fish...

Beautiful,Black-browed,Albatross,,Falkland,Islands,,South,Atlantic,Ocean

Marion Island, a speck of volcanic rock about 1,243 miles southeast of Cape Town, hardly looks like the setting for a horror story. Yet on this windy, treeless outpost, an invasion of house mice is turning a haven for seabirds into a crime scene. 



Night after night, the rodents swarm across the nests of wandering albatrosses and other ocean-roaming birds, gnawing at eggs - and, more recently, at the birds themselves.



The attacks are easy to miss if you picture mice as timid scavengers. On Marion, milder winters have stretched their breeding season, ballooning their numbers. 



With plants and insects picked clean, the <a href="https://www.earth.com/news/the-modern-day-plague-rodents-fleas-and-their-impact-on-wildlife/" target="_blank" rel="noreferrer noopener">rodents</a> have discovered an easier, protein-rich target that can’t flee: birds that never evolved defenses against land predators.



<h2 class="wp-block-heading" id="h-invasive-mice-wreaking-havoc">Invasive mice wreaking havoc</h2>



House mice first arrived on <a href="https://www.nature.com/articles/205064b0" target="_blank" rel="noreferrer noopener">Marion Island</a> in the early 1800s, stowed away on sealing vessels. For most of the next century, they nibbled seeds and invertebrates. 



Warming temperatures, though, gave them extra breeding cycles each year. The population boom pushed the mice to experiment, and birds - stationary, trusting, and plentiful - proved irresistible.



Visitors now report grisly scenes at dawn. Adult <a href="https://www.earth.com/news/strong-winds-make-it-difficult-for-albatrosses-to-feed/" target="_blank" rel="noreferrer noopener">albatrosses</a> sit tight on nests, unblinking, while scores of mice chew away at feathers, skin, and muscle. 



Lacking any instinct to fight back, the birds endure the assault until sheer blood loss or infection finishes the job.



<h2 class="wp-block-heading" id="h-how-mice-can-displace-seabirds">How mice can displace seabirds</h2>



Marion shelters roughly one-quarter of the world’s wandering albatrosses, <a href="https://www.earth.com/news/albatrosses-use-infrasound-for-long-distance-navigation-study-reveals/" target="_blank" rel="noreferrer noopener">legendary fliers</a> whose wings can stretch 11 feet tip to tip. In all, 29 seabird species breed on the island, yet 19 now face local extinction. 



Climate change adds another layer of trouble: warmer seas push fish farther south or deeper, forcing parent birds to travel longer for food and return to nests depleted.



Chicks miss meals; adults miss breeding windows. <a href="https://www.earth.com/news/seabirds-have-different-strategies-to-survive-storms/" target="_blank" rel="noreferrer noopener">Extreme storms</a>, whipped up by hotter oceans, wash away nest sites perched on exposed tussock slopes. Combined with the mouse attacks, these pressures make every breeding season a roll of the dice.



<h2 class="wp-block-heading" id="h-kill-the-mice-save-the-seabirds">Kill the mice, save the seabirds</h2>



“These mice, for the first time last year, were found to be feeding on adult Wandering Albatrosses,” stated Anderson, who also serves as the CEO of <a href="https://www.birdlife.org.za/" target="_blank" rel="noreferrer noopener">BirdLife South Africa</a>. His team’s camera traps record the slow-motion assaults in heartbreaking detail.



“Mice just climb onto them and slowly eat them until they succumb,” said Anderson. The sad, slow process of dying can take days for a bird. “We are losing hundreds of thousands of seabirds every year through the mice.”



Enter the <a href="https://mousefreemarion.org/" target="_blank" rel="noreferrer noopener">Mouse-Free Marion Project</a>, an operation every bit as ambitious as it sounds. 



The blueprint involves loading helicopters with 600 tons of cereal pellets laced with rodenticide and spreading them across the island’s 15.5-mile length and 10.6-mile width. 



Of the $29 million price tag, about a quarter is already in the bank.



“We have to get rid of every last mouse,” emphasized Anderson. “If there were a male and female remaining, they could breed and eventually get back to where we are now.”



<h2 class="wp-block-heading" id="h-lessons-from-a-previous-fiasco">Lessons from a previous fiasco</h2>



Conservationists have tried drastic fixes here before. In the 1940s, cats were introduced to curb the rodents; instead, the felines multiplied and devoured roughly 450,000 birds each year. 



A massive trapping campaign finally removed the last cat in 1991, but the mice inherited an island free of natural enemies.



That cautionary tale hangs over today’s planning sessions. Project leaders stress that baiting must be swift and island-wide - no gaps, no second chances. 



Precision GPS flight lines and winter timing, when most summer-nesting birds are offshore, aim to protect non-target wildlife.



<h2 class="wp-block-heading" id="h-timing-is-everything">Timing is everything</h2>



Winter 2027 is the chosen window, when food is scarce for mice yet most seabirds have migrated north. Helicopters, weather permitting, will crisscross Marion in overlapping swaths to rain down pellets. 



Comparable missions on <a href="https://datazone.birdlife.org/site/factsheet/south-georgia-mainland-islands-islets-and-stacks" target="_blank" rel="noreferrer noopener">South Georgia</a> and New Zealand’s <a href="https://www.doc.govt.nz/parks-and-recreation/places-to-go/southland/places/subantarctic-islands/antipodes-islands/" target="_blank" rel="noreferrer noopener">Antipodes Islands</a> wiped out rats and mice in recent years, showing the blueprint can work even in harsh sub-Antarctic weather.



Logisticians still face headaches: sudden katabatic winds, hidden lava domes, and thick coastal fog that can ground aircraft for days. Even so, a successful first pass is cheaper and kinder than chasing survivors for decades.



<h2 class="wp-block-heading" id="h-seabirds-mice-and-invasive-species">Seabirds, mice, and invasive species</h2>



The Marion saga isn’t an isolated oddity. Islands make up barely two percent of Earth’s land, yet they hold an outsize share of endangered species. 



<a href="https://www.earth.com/news/cats-have-become-one-of-the-worlds-most-invasive-predators/" target="_blank" rel="noreferrer noopener">Invasive predators</a> - rats, cats, pigs, and now even mice - have driven 75 percent of recorded bird, mammal, and reptile extinctions on islands worldwide. 



Climate change intensifies that pressure, allowing hardy generalists to outcompete specialists already living on the edge.



Protecting seabird strongholds pays off far beyond the shoreline. Albatrosses and petrels fertilize oceans with guano rich in nitrogen and phosphorus, <a href="https://www.earth.com/news/marine-plankton-are-key-players-in-carbon-cycle-regulation/" target="_blank" rel="noreferrer noopener">boosting plankton</a> and fish that feed coastal communities. 



Lose the birds, and <a href="https://www.earth.com/news/giant-viruses-hijack-ocean-plants-to-control-marine-food-webs/" target="_blank" rel="noreferrer noopener">marine food webs</a> feel the pinch.



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



Funding gaps still loom, and the clock keeps ticking. Yet every dollar pledged brings the Mouse-Free Marion Project closer to takeoff. 



If helicopters lift off in 2027 and every pellet lands where it should, Marion could echo with healthy albatross calls again within a decade. That would free the conservationists to tackle other invaded islands before more birds vanish.



For now, researchers keep watch through wind-lashed winters, counting nests and documenting each fresh wound. 



The task is grim, but the payoff - restoring one of the world’s greatest seabird nurseries - would be well worth the sleepless nights. 



Should the plan succeed, Marion Island might one day be known not for its tragedy, but for showing how persistence, good science, and a bit of grit can tip the balance back in favor of the wild.



<a href="https://www.birdlife.org/" target="_blank" rel="noreferrer noopener">Visit BirdLife International</a> for more information on this and other topics.



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Officials plan to literally “bomb” invasive mice that are eating seabirds alive

Marion Island, a speck of volcanic rock about 1,243 miles...

When ships travel to the ends of the Earth, their anchors leave more than temporary marks - they create lasting scars on fragile marine life and ecosystems. 



From tourism vessels to research ships, maritime traffic is growing even in the far reaches of Antarctica. And with every anchor dropped, the seafloor is at risk.



Undersea cables, pipelines, and sensitive wildlife habitats can all be damaged by this simple act. Yet, anchoring remains almost completely unregulated in polar waters.



<h2 class="wp-block-heading" id="h-anchors-leave-their-mark-in-antarctica">Anchors leave their mark in Antarctica</h2>



Scientists have recorded new underwater footage that reveals the impact of ship anchoring in Antarctica’s remote marine environments. Their findings offer a rare look into an underreported environmental issue that’s hidden from view.



“This is the first time the impacts of ship anchoring and chain damage are documented in <a href="https://www.earth.com/news/why-antarctic-waters-are-cooling-in-a-warming-world/" target="_blank" rel="noreferrer noopener">Antarctic waters</a>," explained Matthew Mulrennan, a marine scientist and founder of KOLOSSAL, an ocean exploration and conservation nonprofit in California.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/Antarctic-seabed_undisturbed_anchor-damage-ships_credit-KOLOSSAL_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/Antarctic-seabed_undisturbed_anchor-damage-ships_credit-KOLOSSAL_1s.webp" alt="Directly adjacent to the anchoring sites, marine life flourished. Credit: Matt Mulrennan / KOLOSSAL." class="wp-image-1973330"/></a><figcaption class="wp-element-caption">Directly adjacent to the anchoring sites, marine life flourished. Click image to enlarge. Credit: Matt Mulrennan / KOLOSSAL.</figcaption></figure>



"Activities in Antarctica have a lot of strict rules around conservation, yet ship anchoring is almost completely unregulated."



Study co-author Dr. Sally Watson, a marine geophysicist from New Zealand’s National Institute of Water and Atmospheric Research, emphasized the urgency of the situation.



"Documentation is way overdue, given the importance of these ecosystems and the protections we place on them. Anchoring impacts are understudied and underestimated globally. It’s so important to recognize and mitigate the impacts across all industries and limit planned anchoring,” said Dr. Watson.



<h2 class="wp-block-heading" id="h-what-the-cameras-revealed">What the cameras revealed</h2>



During the austral summer of 2022-23, researchers recorded underwater footage across 36 sites near the <a href="https://www.earth.com/news/heat-in-tasman-sea-is-melting-the-antarctic-peninsula/" target="_blank" rel="noreferrer noopener">Antarctic Peninsula</a> and South Georgia Island. 



Cameras were positioned at various depths - close to the surface, midwater, and just one meter above the seabed. What they captured was alarming.



In areas where ships had dropped anchor, the ocean floor was visibly disturbed. Grooves and striations crisscrossed the seabed, and patches of mud covered the habitat. 



At these sites, marine life was sparse or entirely absent. Sponge colonies were crushed, and overall benthic biomass was nearly nonexistent. Yet, just meters away, life thrived - showing that the destruction was highly localized and recent.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/Antarctic-seabed_crushed-stars-sponges_anchor-damage-ships_credit-KOLOSSAL_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/Antarctic-seabed_crushed-stars-sponges_anchor-damage-ships_credit-KOLOSSAL_1s.webp" alt="Striations, grooves, and mud deposits from anchor retrieval were visible in the substrate of the ocean floor. The researchers observed crushed sponge colonies. Credit: Matt Mulrennan / KOLOSSAL" class="wp-image-1973333"/></a><figcaption class="wp-element-caption">Striations, grooves, and mud deposits from anchor retrieval were visible in the substrate of the ocean floor. The researchers observed crushed sponge colonies. Click image to enlarge. Credit: Matt Mulrennan / KOLOSSAL</figcaption></figure>



“The observed damage was a near miss to three giant volcano <a href="https://www.earth.com/news/sponges-are-mysteriously-moving-across-the-arctic-seafloor/" target="_blank" rel="noreferrer noopener">sponges</a>, believed to be the oldest animals on the planet, which may live up to 15,000 years,” said Mulrennan.



The team also observed other species at risk, including Antarctic sun stars, giant <a href="https://www.earth.com/news/experts-identify-cold-adaptations-in-nervous-system-of-antarctic-octopus/" target="_blank" rel="noreferrer noopener">Antarctic octopuses</a>, sea spiders, and various fish, all of which dwell at depths that make them vulnerable to anchoring.



<h2 class="wp-block-heading" id="h-chain-reaction-across-ecosystems">Chain reaction across ecosystems</h2>



According to the researchers, the impacts of ship anchors to marine life extend beyond individual species.



“The weird and wonderful animals that are impacted, like sponges, are important for filtering water, carbon sequestration, and providing shelter, food, and complex habitats which benefit the whole marine ecosystem, including penguins and seals - the animals tourists come to see,” noted Mulrennan.



This ripple effect could alter the <a href="https://www.earth.com/news/sea-ice-loss-is-transforming-the-marine-food-web/" target="_blank" rel="noreferrer noopener">food web</a>, and affect iconic Antarctic wildlife that draws attention and resources for conservation.



<h2 class="wp-block-heading" id="h-slow-recovery-in-cold-waters">Slow recovery in cold waters</h2>



Life in Antarctica is tough, slow, and highly adapted. That makes it especially vulnerable to disruption. Many organisms in anchor zones are slow-growing and can’t relocate. Recovery could take decades - or more.



“We know that anchor impacts in tropical reefs can last a decade. In muddy sediment the scours can still be visible over a decade later,” said Dr. Watson.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/Antarctic-seabed_Antarctic-sun-stars_anchor-damage-ships_credit-KOLOSSAL_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/Antarctic-seabed_Antarctic-sun-stars_anchor-damage-ships_credit-KOLOSSAL_1s.webp" alt="The researchers recorded giant volcano sponges, Antarctic sun stars, giant Antarctic octopus, sea spiders, and a variety of fish at anchorable depths. Credit: Matt Mulrennan / KOLOSSAL" class="wp-image-1973328"/></a><figcaption class="wp-element-caption">The researchers recorded giant volcano sponges, Antarctic sun stars, giant Antarctic octopus, sea spiders, and a variety of fish at anchorable depths. Click image to enlarge. Credit: Matt Mulrennan / KOLOSSAL</figcaption></figure>



“Ecological recovery is really site specific. Things in cold waters are much slower growing than in warmer temperatures so I expect that recovery would take longer the higher the latitude.”



<h2 class="wp-block-heading" id="h-anchor-impacts-on-marine-life">Anchor impacts on marine life</h2>



The researchers say more work is needed. Studies should examine both short- and long-term effects of anchoring, recovery timelines, and how broader ecological functions are disrupted. 



But a major hurdle remains: there is no global database tracking where and how often ships anchor in polar regions.



“Anchoring is likely the most overlooked ocean conservation issue in terms of global seafloor disruption; it is on par with the damages from bottom trawling,” Mulrennan concluded. “It’s a pressing environmental issue, but it’s out of sight, out of mind.”



The full study was published in the journal <a href="https://www.frontiersin.org/journals/conservation-science/articles/10.3389/fcosc.2025.1500652/full" target="_blank" rel="noreferrer noopener">Frontiers in Conservation Science</a>.



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Ship anchors are doing great harm to protected ocean life on the Antarctic seafloor

When ships travel to the ends of the Earth, their...

Fossilized plant fragments preserved inside the belly of an Australian sauropod dinosaur have given researchers the first complete snapshot of what these long-necked giants actually ate. The evidence firmly backs the long-held view that they were voracious herbivores.



The findings are based on a subadult specimen of Diamantinasaurus matildae that roamed what is now Queensland between 94 and 101 million years ago. Its last meals reveal a mixed, unchewed salad of conifer foliage, seed-fern fruiting bodies, and flowering-plant leaves.



The dinosaur broke off these plant fragments instead of chewing them, leaving the gut microbes to do the hard work of digestion.



<h2 class="wp-block-heading" id="h-unique-dinosaur-discovery">Unique dinosaur discovery</h2>



“No genuine sauropod gut contents had ever been found anywhere before, despite sauropods being known from fossils found on every continent” said lead author Stephen Poropat, a paleontologist at <a href="https://www.curtin.edu.au/" target="_blank" rel="noreferrer noopener">Curtin University</a>.



Until now, scientists pieced together sauropod menus indirectly - examining tooth scratches, jaw mechanics, and neck reach. 



The new discovery provides something more definitive: a preserved cololite, or fossil gut content. Scientists can analyze this down to the species of plant it contains.



<h2 class="wp-block-heading" id="h-big-discovery-in-australia">Big discovery in Australia</h2>



The breakthrough came during the 2017 field season at the <a href="https://www.australianageofdinosaurs.com/" target="_blank" rel="noreferrer noopener">Australian Age of Dinosaurs Museum</a>. Volunteers preparing the Diamantinasaurus skeleton noticed a fractured, oddly packed slab of sediment lodged among the ribs.



Careful extraction revealed dozens of delicate <a href="https://www.earth.com/news/fossil-reveals-how-plants-use-winged-seeds-to-expand-their-habitats/" target="_blank" rel="noreferrer noopener">plant fossils</a>: scales from conifer needles, seed-fern pods. The researchers also found tender angiosperm leaves and even tiny shoots and bracts.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/sauropod-guts_fossilized_australia_credit-Stephen-Poropat_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/sauropod-guts_fossilized_australia_credit-Stephen-Poropat_1s.webp" alt="Australian Age of Dinosaurs Collection Manager Mackenzie Enchelmaier holds up sauropod gut content fossil. Credit: Stephen Poropat" class="wp-image-1973337"/></a><figcaption class="wp-element-caption">Australian Age of Dinosaurs Collection Manager Mackenzie Enchelmaier holds up sauropod gut content fossil. Click image to enlarge. Credit: Stephen Poropat</figcaption></figure>



Chemical analyses later detected biomarkers of both angiosperms and gymnosperms, confirming the findings.



<h2 class="wp-block-heading" id="h-new-insights-into-sauropod-feeding">New insights into sauropod feeding</h2>



Microscopic inspection revealed that the sauropod had snapped, not shredded, most plant fragments.



“The plants within show evidence of having been severed, possibly bitten, but have not been chewed, supporting the hypothesis of bulk feeding in <a href="https://www.earth.com/news/new-species-of-sauropod-dinosaur-discovered/" target="_blank" rel="noreferrer noopener">sauropods</a>,” noted Poropat.



The conclusion matches anatomical expectations: sauropod teeth evolved for nipping vegetation rather than grinding it. 



Instead, these dinosaurs likely swallowed mouthfuls whole, letting fermentation chambers and resident microbes break down the cellulose.



Chemical signatures in the cololite point to an “eat what’s within reach” strategy rather than selective browsing.



“This implies that at least some sauropods were not selective feeders, instead eating whatever plants they could reach and safely process,” Poropat explained.



That indiscriminate appetite would have amplified the ecological influence of sauropods. It allowed their vast bodies to recycle nutrients across entire landscapes during the Jurassic and Cretaceous.



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



The team expected to find conifer and seed-fern remains, but the presence of flowering-plant foliage caught them off-guard.



“Angiosperms became approximately as diverse as conifers in Australia around 100 to 95 million years ago, when this sauropod was alive,” Poropat said.



“This suggests that sauropods had successfully adapted to eat <a href="https://www.earth.com/news/flowering-plants-appeared-two-million-years-earlier-than-we-thought/" target="_blank" rel="noreferrer noopener">flowering plants</a> within 40 million years of the first evidence of the presence of these plants in the fossil record.”



The finding suggests these dinosaurs quickly incorporated new plant types as they emerged in Mesozoic ecosystems.



Because the specimen was a subadult, the researchers infer it could graze both low and mid-story vegetation. Hatchlings grazed only on groundcover, while fully-grown adults could strip branches from treetops.



The abundance of soft shoots and seed pods suggests that younger Diamantinasaurus individuals targeted nutrient-rich new growth, which ferments more easily than woody tissue.



<h2 class="wp-block-heading" id="h-one-stomach-many-questions"><a></a>One stomach, many questions</h2>



Poropat stresses that the study offers “a single data point.” The snapshot captures only the last few meals of one individual and may not represent typical <a href="https://www.earth.com/news/fossilized-poop-reveals-the-diet-of-dinosaurs-200-million-years-ago/" target="_blank" rel="noreferrer noopener">diets</a>, seasonal shifts, or adult feeding habits.



Even a single case shows that gut-content fossils, though rare, can confirm hypotheses and refine our view of dinosaur ecology.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/sauropod-dinosaur_Diamantinasaurus-matildae_illustration_credit-Travis-Tischler_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/sauropod-dinosaur_Diamantinasaurus-matildae_illustration_credit-Travis-Tischler_1s.webp" alt="Artist impression of Diamantinasaurus matildae feeding. Credit: Travis Tischler" class="wp-image-1973335"/></a><figcaption class="wp-element-caption">Artist impression of Diamantinasaurus matildae feeding. Click image to enlarge. Credit: Travis Tischler</figcaption></figure>



The team hopes further excavations in the Winton Formation and other Cretaceous sites will yield additional cololites to broaden the picture.



<h2 class="wp-block-heading" id="h-feeding-for-giants">Feeding for giants</h2>



Taken together, the findings bolster the idea that “indiscriminate bulk feeding” underpinned sauropod dominance for roughly 130 million years.



By gulping vast quantities of whatever greenery was available and outsourcing digestion to microbial partners, these giants could fuel bodies the size of whales on land.



As Poropat and colleagues point out, understanding that strategy not only illuminates dinosaur biology but also helps reconstruct the plant communities and nutrient cycles of ancient Earth.



The study is published in the journal <a href="https://linkinghub.elsevier.com/retrieve/pii/S0960982225005500" target="_blank" rel="noreferrer noopener">Current Biology</a>.



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Fossilized guts reveal the eating habits of sauropod dinosaurs

Fossilized plant fragments preserved inside the belly of an Australian...

Springtime in the Arctic is a spectacular show of life, as millions of birds gather to nest and raise their young under the midnight sun. Remarkably, this annual ritual traces its roots back much further than previously believed - 73 million years ago. 



That’s the conclusion of a recently published study that identifies the oldest known evidence of birds nesting in the polar regions.



The discovery was made in northern Alaska’s Prince Creek Formation. It reveals that several types of birds were already breeding in the Arctic during the <a href="https://www.earth.com/news/late-cretaceous-dinosaur-was-sluggish-and-nearly-deaf/" target="_blank" rel="noreferrer noopener">Late Cretaceous</a> period, when dinosaurs still ruled the land.



These findings challenge previous assumptions about where and when ancient birds reproduced - and expand the timeline of avian life in Earth’s most extreme environments by more than 25 million years.



“For half of the time they have existed, they have been nesting in the Arctic,” said Lauren Wilson, the study’s lead author and a doctoral student at <a href="https://www.princeton.edu/" target="_blank" rel="noreferrer noopener">Princeton University</a>. Wilson completed her master’s degree at the <a href="https://www.uaf.edu/uaf/" target="_blank" rel="noreferrer noopener">University of Alaska Fairbanks</a> (UAF), where the research began.



<h2 class="wp-block-heading" id="h-bird-fossils-rewrite-history">Bird fossils rewrite history</h2>



Using a collection of over 50 fossilized bird bones and teeth excavated from Alaska’s North Slope, Wilson and her team made an important discovery. They identified several species of birds that appear to have nested in the region.



These included diving birds similar to modern loons, gull-like species, and various duck- and goose-like waterfowl. 



The bones representing juveniles - some likely still nest-bound - offer strong evidence that these birds were not merely passing through but breeding in the Arctic.



“Finding bird bones from the Cretaceous is already a very rare thing,” Wilson said. “To find baby bird bones is almost unheard of. That is why these fossils are significant.”



<h2 class="wp-block-heading" id="h-saving-fragile-fossil-evidence">Saving fragile fossil evidence</h2>



The mere existence of such delicate remains is extraordinary. Bird bones are lightweight and fragile by design, and juvenile bones are even more prone to destruction over time.



Yet, thanks to meticulous excavation efforts, researchers were able to recover and identify these fossilized traces of ancient avian life.



The fossils were found in the <a href="https://www.sciencedirect.com/science/article/abs/pii/S0031018218306667" target="_blank" rel="noreferrer noopener">Prince Creek Formation</a>, a remote site along the Colville River renowned for its Cretaceous dinosaur remains.



Until recently, the area was not known for yielding fossil birds. This changed recently, thanks in part to the excavation strategy used by the UAF Museum of the North’s research team.



<h2 class="wp-block-heading" id="h-tiny-bones-from-arctic-bird-fossils">Tiny bones from Arctic bird fossils</h2>



Traditional vertebrate paleontology often focuses on recovering large, visible bones - those of <a href="https://www.earth.com/news/organic-molecules-collagen-discovered-in-66-million-year-old-dinosaur-bones/" target="_blank" rel="noreferrer noopener">dinosaurs</a>, for example. But the team working at Prince Creek takes a more comprehensive approach.



Alongside the big finds, they also gather large volumes of sediment and screen them for microscopic remains. Researchers then carefully examine these samples under microscopes back at the lab, revealing a world of small, often-overlooked fossils.



“We put Alaska on the map for fossil birds,” said Pat Druckenmiller, the paper’s senior author and director of the <a href="https://www.uaf.edu/museum/" target="_blank" rel="noreferrer noopener">University of Alaska Museum of the North</a>. “It wasn’t on anyone’s radar.”



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/birds_arctic-nesting_bird-beak-fossil_credit-Pat-Druckenmiller_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/birds_arctic-nesting_bird-beak-fossil_credit-Pat-Druckenmiller_1s.webp" alt="The tip of a hatchling bird beak sits on the end of a finger. Credit: Pat Druckenmiller" class="wp-image-1973308"/></a><figcaption class="wp-element-caption">The tip of a hatchling bird beak sits on the end of a finger. Click image to enlarge. Credit: Pat Druckenmiller</figcaption></figure>



Druckenmiller credits the fine-grained approach with revealing new insights into Cretaceous Arctic ecosystems. The same methods have also led to the discovery of new dinosaur and mammal species in the region.



“In terms of information content, these little bones and teeth are fascinating and provide an incredible depth of understanding of the animals of this time,” Druckenmiller said.



<h2 class="wp-block-heading" id="h-ancient-arctic-bird-nursery">Ancient Arctic bird nursery</h2>



The findings show that birds have been using the Arctic as a breeding ground far longer than previously thought.



Earlier evidence of polar bird <a href="https://www.earth.com/news/tangled-twigs-the-secrets-of-sturdy-bird-nests/" target="_blank" rel="noreferrer noopener">nesting</a> dated to around 47 million years ago - well after the mass extinction event that wiped out most of Earth’s species, including the non-avian dinosaurs. 



The new discovery pushes that timeline back by 25 to 30 million years, deep into the age of dinosaurs.



“The Arctic is considered the nursery for modern birds,” Druckenmiller said. “It’s kind of cool when you go to Creamer’s Field [a well-known stopover for <a href="https://www.earth.com/news/how-do-migratory-birds-navigate-with-such-accuracy/" target="_blank" rel="noreferrer noopener">migratory birds</a> in Fairbanks], to know that they have been doing this for 73 million years.”



<h2 class="wp-block-heading" id="h-the-origins-of-modern-birds">The origins of modern birds</h2>



Beyond expanding the record of avian life in the polar regions, the fossils raise intriguing questions about the origins of modern birds.



Some of the bones appear to belong to <a href="https://www.earth.com/news/how-and-why-tropical-birds-are-so-strikingly-colorful-and-iridescent/" target="_blank" rel="noreferrer noopener">Neornithes</a> - the group that includes all living birds. These fossils show skeletal traits exclusive to modern birds. Some even lacked teeth, a feature seen in today’s avian species.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/birds_arctic-nesting_with-dinosaurs_illustration_credit-Gabriel-Ugueto_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/birds_arctic-nesting_with-dinosaurs_illustration_credit-Gabriel-Ugueto_1s.webp" alt="An illustration of Cretaceous Period birds with other dinosaurs from the same time period in the background. A paper in the journal Science documents the earliest-known example of birds nesting in the polar regions. Credit: Gabriel Ugueto" class="wp-image-1973310"/></a><figcaption class="wp-element-caption">An illustration of Cretaceous Period birds with other dinosaurs from the same time period in the background. A paper in the journal Science documents the earliest-known example of birds nesting in the polar regions. Click image to enlarge. Credit: Gabriel Ugueto</figcaption></figure>



“If they are part of the modern bird group, they would be the oldest such fossils ever found,” Druckenmiller said. 



At present, the oldest known Neornithes fossils date to around 69 million years ago. “But it would take us finding a partial or full skeleton to say for sure.”



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



The implications of the study go beyond the Arctic. They suggest that ancient birds - despite their small size and delicate physiology - were able to thrive in high-latitude environments long before the <a href="https://www.earth.com/news/earth-polar-regions-changing-fundamental-alarming-ways/">polar climates</a> we know today fully developed.



During the Cretaceous, the Arctic was warmer but still experienced seasonal extremes of light and darkness, posing significant challenges for any nesting animals.



That these birds not only survived but reproduced successfully hints at a more complex evolutionary history than previously assumed. It also suggests modern <a href="https://www.earth.com/news/arctic-geese-adapt-by-finding-a-new-migratory-route/" target="_blank" rel="noreferrer noopener">migratory waterfowl</a> echo ancient patterns by returning to northern wetlands each spring to raise their young.



As researchers continue to study the Colville River fossils, they hope to uncover additional material that can confirm the identity and relationships of these Arctic avian pioneers.



For now, the Prince Creek Formation stands as one of the world’s most important sites for understanding the early history of birds. It shows what can be found when scientists search for both big and small bones.



The study is published in the journal <a href="https://www.science.org/doi/10.1126/science.adt5189" target="_blank" rel="noreferrer noopener">Science</a>.



Image Credit: &nbsp;Gabriel Ugueto



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Scientists find proof that birds nested in the Arctic alongside dinosaurs

Springtime in the Arctic is a spectacular show of life,...

Two notorious hybrid termite species have found a surprising way to become even more destructive. Researchers in Florida report that these wood-eating insects are forming hybrids that might spread into many parts of the world.



Both <a href="https://www.earth.com/news/termites-play-an-unexpected-role-in-rainforest-revival/" target="_blank" rel="noreferrer noopener">species</a> are known for their ability to damage timber and invade new places with ease. The research was led by Thomas Chouvenc at the <a href="https://www.ufl.edu/" target="_blank" rel="noreferrer noopener">University of Florida</a>.



<h2 class="wp-block-heading" id="h-hybrid-termites-may-survive-in-more-places">Hybrid termites may survive in more places</h2>



Invasive termites have already caused massive economic losses, with <a href="https://www.annualreviews.org/doi/10.1146/annurev-ento-120710-100634" target="_blank" rel="noreferrer noopener">estimated</a> worldwide damage of $40 billion each year.



This figure covers structural repairs, preventive treatments, and other costs tied to these <a href="https://www.earth.com/news/termites-are-natures-architects-building-well-ventilated-nests/" target="_blank" rel="noreferrer noopener">insects</a>. Experts worry that combining two invasive species might produce termites that thrive in more environments than either parent.



These interbreeding pests are believed to hail from <a href="https://edis.ifas.ufl.edu/publication/IN278" target="_blank" rel="noreferrer noopener">Coptotermes formosanus</a> (the Formosan subterranean termite) and <a href="https://edis.ifas.ufl.edu/publication/IN285" target="_blank" rel="noreferrer noopener">Coptotermes gestroi</a> (the Asian subterranean termite).



Hybrids could open doors to new areas if they tolerate different climates better than either <a href="https://www.earth.com/news/enormous-desert-structure-termite-mound-built-by-insects-can-be-seen-from-space/" target="_blank" rel="noreferrer noopener">species</a>.



<h2 class="wp-block-heading" id="h-hybrid-traits-from-both-parent-termites">Hybrid traits from both parent termites</h2>



Some hybrid termites have been found to carry traits from both parent species, including the ability to tolerate a wider range of temperatures.



Edouard Duquesne at the Free University of Brussels in Belgium, who was not involved with the research, elaborated on the significance of the study.



“The findings are interesting and alarming. Viable hybrids of these two species would likely lead to a super-invasive termite that could potentially have a huge suitable range worldwide, and that could do important damages,” said Duquesne.



<h2 class="wp-block-heading" id="h-hybrid-termites-could-spread-through-boats">Hybrid termites could spread through boats</h2>



Hybrid termites are not just concerning because of what they are, but because of how easily they could travel. With both parent species already established in southern Florida, opportunities for hybridization increase every year.



“It’s just a matter of time before they get a chance to hybridise,” said Chouvenc. Ships and leisure boats might carry them from infested areas to new coastal regions, making Florida’s global boat traffic a major risk factor for future outbreaks.



<h2 class="wp-block-heading" id="h-what-makes-this-hybrid-unique">What makes this hybrid unique</h2>



The hybrid termites don't just survive - they reproduce. The researchers confirmed that hybrid females can mate with either parent species, forming second-generation <a href="https://www.earth.com/news/chimpanzees-select-the-best-materials-for-termite-fishing/" target="_blank" rel="noreferrer noopener">colonies</a>.



This genetic flexibility may allow the hybrids to evolve quickly and adapt to new challenges. Early studies show that while some of these colonies struggle, others can grow and mature over time.



In one case, a second-generation colony reached over a thousand workers in under three years, showing surprising resilience.



<h2 class="wp-block-heading" id="h-florida-the-perfect-launchpad">Florida: The perfect launchpad</h2>



Florida isn’t just a mixing zone for these two termite species, it’s a global hub for their spread. With nearly a million privately owned leisure boats <a href="https://www.statista.com/statistics/1155988/us-recreational-boating-vessels/" target="_blank" rel="noreferrer noopener">registered</a> in the state, the potential for unnoticed transport is sky-high.



The first confirmed hybrid colony was found just over half a mile from a dense marina district. That proximity makes it likely that flying <a href="https://www.orkin.com/pests/termites/colony/termite-alates" target="_blank" rel="noreferrer noopener">alates</a> could settle onto boats and travel to distant coastlines without ever being detected.



<h2 class="wp-block-heading" id="h-problems-for-pest-control">Problems for pest control</h2>



Most termite treatments are tailored to specific species. Pest management companies often adjust their methods depending on whether they’re dealing with C. formosanus or C. gestroi.



But hybrids could blur that line. Their mixed traits might respond unpredictably to current treatments, making control efforts more complicated and potentially less effective.



<h2 class="wp-block-heading" id="h-why-early-detection-matters">Why early detection matters</h2>



Spotting these hybrids early could prevent bigger problems later. The longer they go unnoticed, the more likely they are to spread through infested wood, soil, or boats.



Unfortunately, identification isn’t always straightforward. Some hybrid termites show features that fall between the two parent species, making them hard to classify without genetic testing or detailed knowledge of termite morphology.



<h2 class="wp-block-heading" id="h-practical-steps-ahead">Practical steps ahead</h2>



In some cases, local authorities try to prevent termite travel by inspecting cargo, but private vessels often escape such checks. Researchers advise owners of docked vessels to inspect wooden parts carefully and seek professional help if they find signs of infestation.



Public agencies might focus more resources on monitoring, because identifying hybrids early could be key to containment. Yet the process of telling these insects apart can be tricky, since their features can blend.



Early identification often involves a close inspection of alates (the winged caste) that appear in warmer months. Scientists note that hybrid alates can show subtle differences in body color or size.



By staying vigilant, communities may slow the spread of these insects to new regions. Many hope that targeted strategies will limit hybrid termite expansions before they become unstoppable.



<h2 class="wp-block-heading" id="h-long-term-risks-for-ecosystems">Long-term risks for ecosystems</h2>



The hybrid termites don’t just threaten buildings - they could also affect forests and natural habitats. Their ability to feed on a wide range of wood sources makes them a potential danger to native trees and vegetation.



As they spread, they may disrupt local ecosystems by outcompeting native decomposer species. Over time, this could affect nutrient cycles in the soil and alter the balance of natural communities.



The study is published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rspb.2025.0413" target="_blank" rel="noreferrer noopener">Proceedings of the Royal Society B</a>.



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Hybrid termites could spread worldwide from Florida boats

Two notorious hybrid termite species have found a surprising way...

In the forests of Madagascar, small lizards do more than sunbathe on rocks or snap at insects. In fact, they may be shaping the future of Madagascar’s forests, one seed at a time.



Madagascar has long fascinated scientists, naturalists, and explorers alike. This large Indian Ocean island is home to some of the world’s rarest species. More than 80% of its wildlife can’t be found anywhere else. Lemurs leap through treetops. Baobabs rise like ancient towers. Orchids bloom in forests untouched for centuries. The island is a living archive of evolution’s creativity.



Its uniqueness stems from a deep, ancient break. Around 88 million years ago, Madagascar drifted away from India. Once separated, its ecosystems evolved in isolation. As generations passed, this seclusion led to extraordinary <a href="https://www.earth.com/news/forests-provide-different-health-benefits-based-on-their-structure/" target="_blank" rel="noreferrer noopener">biodiversity</a>. But amid all the celebrated species and stories, silent helpers have gone unnoticed for too long: the lizards.



<h2 class="wp-block-heading" id="h-how-lizards-spread-seeds-in-forests">How lizards spread seeds in forests</h2>



Many <a href="https://www.earth.com/news/many-forests-that-benefit-people-also-shelter-endangered-birds/" target="_blank" rel="noreferrer noopener">plants</a> don’t just drop seeds nearby. They depend on animals to move them across the land. This natural process, called endozoochory, involves an animal eating fruit or seeds. Later, those seeds get expelled in the animal’s droppings. Carried far from the parent plant, the seeds land in fresh ground, ready to sprout.



Most of what we know about endozoochory comes from studying mammals and birds. Lemurs, for example, are known for their role in this cycle in Madagascar. Birds also help, flying great distances and spreading seeds with every flight. But reptiles, particularly lizards, haven’t received the same attention.



That’s a mistake, say researchers at <a href="https://www.kyoto-u.ac.jp/en" target="_blank" rel="noreferrer noopener">Kyoto University</a>. They argue that lizards have an important part to play too. These animals may not be classic fruit-lovers, but a few species do consume fruits and other plant parts. Their habits, movement, and resilience may allow them to serve as crucial seed dispersers in ways we’ve only just begun to understand.



<h2 class="wp-block-heading" id="h-why-lizards-matter-in-forest-ecosystems">Why lizards matter in forest ecosystems</h2>



Unlike lemurs or fruit bats, most lizards don’t depend on fruit. Less than 10% of lizard species are considered frugivores. Yet those that do eat fruit may influence plant life in ways researchers are only now beginning to measure. Some species even serve as primary seed dispersers for specific plants, especially in areas where larger animals have disappeared.



"Lizards are under-appreciated as seed dispersers in many forest <a href="https://www.earth.com/news/forests-are-still-fighting-climate-change-against-all-odds/" target="_blank" rel="noreferrer noopener">ecosystems</a>, but we hypothesized that they may play a more important role across a broader range of regions than previously recognized," said corresponding author Ryobu Fukuyama.



To test this idea, Fukuyama and his colleagues designed a study focused on three lizard species in Madagascar. These were the Malagasy Giant Chameleon, Cuvier's Madagascar Swift, and the Western Girdled Lizard. 



All three species are omnivorous and known to eat fruit occasionally. However, their potential as seed spreaders had never been seriously evaluated.



<h2 class="wp-block-heading" id="h-observing-lizard-behavior">Observing lizard behavior</h2>



The team set up camp in a tropical dry <a href="https://www.earth.com/news/protecting-forests-helps-birds-and-humans-in-many-ways/" target="_blank" rel="noreferrer noopener">forest</a> in Madagascar. They watched the lizards carefully, recorded their feeding behavior, and collected fecal samples. 



They also ran germination tests to see if the seeds could still grow after passing through a lizard’s gut. This detailed approach helped them track not just what lizards eat, but what they contribute to the ecosystem.



Their findings surprised them. The lizards consumed fruits from more than 20 different plant species. Even more interesting, these plants were often not the same ones favored by lemurs. This suggested that lizards might not just support the same trees as other animals. They might help expand the forest’s botanical diversity.



Fecal analyses confirmed that many seeds remained viable. The lizards were not just accidental consumers. They acted as functioning carriers in the seed cycle, allowing new plants to take root away from their original source.



<h2 class="wp-block-heading" id="h-how-lizards-help-forests-recover">How lizards help forests recover</h2>



Madagascar’s forests face serious threats. Logging, slash-and-burn farming, and habitat destruction have left scars across the landscape. As forests shrink, large fruit-eaters like lemurs lose their homes. When they vanish, the trees that rely on them struggle to reproduce.



But lizards are survivors. They adapt to disturbed environments. Where lemurs falter, these reptiles often continue to thrive. That adaptability may give them a vital role in the regrowth of damaged forests. As long as they keep consuming fruit and dispersing seeds, they could help heal the land.



Their contributions might not replace larger animals completely. But they offer hope for certain plant species that would otherwise vanish. In places where biodiversity is already under pressure, every small helper matters.



<h2 class="wp-block-heading" id="h-what-we-still-don-t-know">What we still don’t know</h2>



The Kyoto University team views this study as only the beginning. They’ve revealed that lizards do eat fruit and spread seeds. But many questions remain. How far do these lizards travel? Do they prefer certain plants over others? Can they truly support forest restoration over time?



"Although lizards in Madagascar consume fruits from many plant species, other aspects of their role as seed dispersers, such as dispersal distances, remain poorly understood," commented Fukuyama.



Future research will explore these unknowns. Understanding dispersal distance, for instance, will help determine how effective lizards really are in forest regeneration. Scientists also want to study whether lizard seed dispersal supports tree diversity, or whether it favors only a few resilient species.



<h2 class="wp-block-heading" id="h-a-new-way-to-look-at-old-forests">A new way to look at old forests</h2>



Madagascar’s ecological story is still unfolding. Its forests, once dense and vibrant, now face an uncertain future. Conservation efforts often focus on charismatic animals, the ones we notice first. Lemurs, chameleons, and rare orchids get headlines. But the lizards, often silent and unnoticed, may be doing more than we imagined.



They offer us a chance to rethink how forests work. Even in the most unexpected corners of nature, there are creatures playing vital roles. By understanding them better, we can protect not only individual species but the living systems that keep our planet healthy.



The study is published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1111/btp.70052" target="_blank" rel="noreferrer noopener">Biotropica</a>.



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How lizards help keep Madagascar's forests alive

In the forests of Madagascar, small lizards do more than...

Somewhere in what is now northern Cameroon, a single stride pressed into wet river mud - three clawed toes, each the length of a hand. Minutes later, the water receded, silt drifted over the mark, and the print was saved for posterity. 



Fast-forward 120 million years, and that fossilized step helps rewrite the map of an ancient world.



Back in the Early Cretaceous, Cameroon was stitched to the elbow of northeastern Brazil. There was no Atlantic Ocean, only a low, swampy plain linking the two landmasses. 



Long-necked plant-eaters lumbered through reed beds, sharp-toothed hunters trailed them, and every footfall wrote a record in clay.



<h2 class="wp-block-heading" id="h-dinosaur-tracks-pre-atlantic-ocean">Dinosaur tracks pre-Atlantic Ocean</h2>



Geologists call that vanished landscape <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/gondwana" target="_blank" rel="noreferrer noopener">Gondwana</a>, the southern supercontinent that had only recently split from Pangea. 



Around 140 million years ago, tectonic forces tugged at its seams, opening rifts that would become the South Atlantic. 



Even as magma welled up offshore, rivers still braided across the future ocean floor, allowing wildlife to wander freely between the continents. 



Those paths are now exposed in two places more than 3,700 miles apart: the Koum Basin of Cameroon and the Borborema region of Brazil.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_ornithopod_Passagem-das-Pedra_credit-SMU_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_ornithopod_Passagem-das-Pedra_credit-SMU_1s.webp" alt="A long ornithopod trackway at Passagem das Pedra, Sousa Basin preserved in floodplain deposits of Lower Cretaceous. Credit: Ismar de Souza Carvalho." class="wp-image-1973174"/></a><figcaption class="wp-element-caption">A long ornithopod trackway at Passagem das Pedra, Sousa Basin preserved in floodplain deposits of Lower Cretaceous. Click image to enlarge. Credit: Ismar de Souza Carvalho.</figcaption></figure>



The connection comes into sharp relief thanks to a study led by paleontologist <a href="https://www.smu.edu/dedman/academics/departments/earth-sciences/people/emeriti/l-jacobs" target="_blank" rel="noreferrer noopener">Louis L. Jacobs</a> of Southern Methodist University (<a href="https://www.smu.edu" target="_blank" rel="noreferrer noopener">SMU</a>). 



His international team catalogued more than 260 dinosaur tracks in both basins across the Atlantic Ocean and showed that “in terms of age, these footprints were similar,” Jacobs said. 



“In their geological and plate tectonic contexts, they were also similar. In terms of their shapes, they are almost identical.” 



The twin sites, once side by side, preserve what researchers now call the <a href="https://www.researchgate.net/figure/Late-Cretaceous-dispersal-of-dinosaurs-across-marine-barriers-1-Titanosauria-South_fig12_346582740" target="_blank" rel="noreferrer noopener">Dinosaur Dispersal Corridor</a>.



<h2 class="wp-block-heading" id="h-stone-tracks-tell-pre-atlantic-dinosaur-tales">Stone tracks tell pre-Atlantic dinosaur tales</h2>



Most of the footprints belong to <a href="https://www.earth.com/news/large-theropod-dinosaurs-thrived-in-polar-environments/" target="_blank" rel="noreferrer noopener">three-toed theropods</a>, the fleet carnivores of their day. A handful of <a href="https://www.earth.com/news/qunkasaura-pintiquiniestra-new-sauropod-dinosaur-discovered-in-spain/" target="_blank" rel="noreferrer noopener">sauropod</a> and <a href="https://www.earth.com/news/100-million-year-old-dinosaur-eggs-show-glimpses-of-life-in-jurassic-america/" target="_blank" rel="noreferrer noopener">ornithopod</a> impressions round out the roster, hinting at herds of plant-eaters trudging through the same wetlands. 



Sediments alongside the tracks contain pollen that also dates to about 120 million years ago, reinforcing the match between both sides of the Atlantic rift.



“One of the youngest and narrowest geological connections between Africa and South America was the elbow of northeastern Brazil nestled against what is now the coast of Cameroon along the Gulf of Guinea,” Jacobs explained. 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_therapods_Sousa-Basin_credit-SMU_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_therapods_Sousa-Basin_credit-SMU_1s.webp" alt="Theropod footprint from Sousa Basin, Lower Cretaceous of northeastern Brazil. Credit: Ismar de Souza Carvalho" class="wp-image-1973179"/></a><figcaption class="wp-element-caption">Theropod footprint from Sousa Basin, Lower Cretaceous of northeastern Brazil. Click image to enlarge. Credit: Ismar de Souza Carvalho</figcaption></figure>



“The two continents were continuous along that narrow stretch, so that animals on either side of that connection could potentially move across it.” 



The footprints freeze that moment when the land bridge was still open yet fragile, a snapshot just before the continents drifted apart for good.



<h2 class="wp-block-heading" id="h-life-along-the-dispersal-corridor">Life along the dispersal corridor</h2>



River valleys served as natural highways. Their floodplains offered water, sheltering vegetation, and soft ground ideal for capturing prints. 



“Rivers flowed and lakes formed in the basins. Plants fed the herbivores and supported a food chain," Jacobs continued. 



"Muddy sediments left by the rivers and lakes contain dinosaur footprints, including those of meat-eaters, documenting that these river valleys could provide specific avenues for life to travel across the continents 120 million years ago.” 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_gondwana_map-path-walked_credit-NMSU_1big.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_gondwana_map-path-walked_credit-NMSU_1s.webp" alt="Paleogeographic reconstruction of the South Atlantic during the earliest Aptian (120 Ma). Red stars represent the Borborema region of Brazil (left red star) and Northern Cameroon footprint-bearing localities (right red star). The Borborema/ Benin-Nigeria Structural Provinces (as shown by Matos et al., 2021a, fig. 1) can be imagined as an ovoid shape with the narrower end just west of the left red star, and the wider end looped beyond the right red star. (Modified from Scotese, 2021)." class="wp-image-1973172"/></a><figcaption class="wp-element-caption">Paleogeographic reconstruction of the South Atlantic during the earliest Aptian (120 Ma). Red stars represent the Borborema region of Brazil (left red star) and Northern Cameroon footprint-bearing localities (right red star). The Borborema/ Benin-Nigeria Structural Provinces can be imagined as an ovoid shape with the narrower end just west of the left red star, and the wider end looped beyond the right red star. Click image to enlarge. Credit: SMU</figcaption></figure>



With every rainy season, new tracks overlapped the old, building a layered story of migration.



Beyond tracks, bones tell of a thriving ecosystem. 



Fossils from nearby basins include <a href="https://www.earth.com/news/benggwigwishingasuchus-eremicarminis-new-triassic-crocodile-species/" target="_blank" rel="noreferrer noopener">crocodilians</a>, turtles, fish, and even early mammals such as Abelodon abeli, a curious tooth-shaped animal that hints at the deep roots of modern mammal lineages. 



Each discovery fills gaps in the puzzle of how life adapted while the ground beneath it slowly tore apart.



<h2 class="wp-block-heading" id="h-footprints-meet-fossils">Footprints meet fossils</h2>



<a href="https://ui.adsabs.harvard.edu/abs/2024JAfES.20905129N/abstract" target="_blank" rel="noreferrer noopener">The Koum</a> and <a href="https://www.researchgate.net/figure/Location-of-the-Babouri-Figuil-Basin-as-well-as-the-main-hydrographic-network-of-the_fig1_357405559" target="_blank" rel="noreferrer noopener">Babouri-Figuil</a> basins are half-graben structures - troughs formed when crust stretches and drops along faults. Similar basins pepper both coasts of the South Atlantic, but few are as rich in terrestrial fossils. 



That makes northern Cameroon a focal point for anyone tracing dinosaur journeys across Gondwana. The first finds came to light in the 1980s during the multinational <a href="https://www.appluslaboratories.com/global/en/about-us/innovation/pireco-project" target="_blank" rel="noreferrer noopener">PIRCAOC project</a>, and newer digs still turn up surprise specimens despite the region’s remote location.



In Brazil, the matching tracks lie within red siltstones that once lined ancient lagoons. Their fine grain preserves claw imprints and skin traces in remarkable detail. 



Together, the African and South American sites confirm that dinosaurs strolled across a contiguous landmass long after <a href="https://www.earth.com/earthpedia-articles/supercontinents-101-pannotia-gondwana-and-pangea/" target="_blank" rel="noreferrer noopener">Pangea</a> began unraveling, using the same river corridors that would later drown beneath the Atlantic.



<h2 class="wp-block-heading" id="h-why-these-tracks-matter-today">Why these tracks matter today</h2>



Studying the dispersed footprints sharpens computer models that reconstruct continental drift, improving predictions of where oil, minerals, or groundwater might reside today. 



They also highlight how living routes shift as climates and coastlines change, offering lessons for wildlife facing modern habitat fragmentation.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_therapods_Koum-Basin_credit-SMU_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/08/dinosaur-footprints_therapods_Koum-Basin_credit-SMU_1s.webp" alt="Two representative theropod tracks from the Koum Basin in northern Cameroon. Credit: SMU" class="wp-image-1973177"/></a><figcaption class="wp-element-caption">Two representative theropod tracks from the Koum Basin in northern Cameroon. Click image to enlarge. Credit: SMU</figcaption></figure>



Visitors can now follow marked trails to view several of the Cameroonian prints, stepping where theropods once hunted. Local guides say the site feels like “a story written in stone.” 



<h2 class="wp-block-heading" id="h-dinosaur-tracks-reunited-across-the-atlantic">Dinosaur tracks reunited across the Atlantic</h2>



That story is still unfolding as researchers scan, map, and compare each trackway. Future excavations may uncover additional corridors, showing that <a href="https://www.earth.com/news/fossils-discovered-in-australia-rewrite-dinosaur-history/" target="_blank" rel="noreferrer noopener">prehistoric migration</a> was as complex and wide-ranging as journeys undertaken by animals in the present day.



The tracks remind us that continents move at a snail’s pace, yet over millions of years that pace is enough to reshape oceans, climates, and the paths available to life. 



By reading the mudstone diaries of Cameroon and Brazil, scientists glimpse how creatures responded to those changes - walking, feeding, and multiplying across a supercontinent that no longer exists, but whose memory endures beneath our feet.



The full study was <a href="https://smu.box.com/s/e2ghm8ycjb1zf6hu9pooypdl4sosylbn" target="_blank" rel="noreferrer noopener">published</a> in print by New Mexico Museum of Natural History &amp; Science



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How did dinosaurs migrate to live in every part of the world? Scientists think they know

Somewhere in what is now northern Cameroon, a single stride...

Mammoth Cave in Kentucky stretches for more than 420 miles (675 kilometers) below the surface of the ground and is often described as the world’s largest cave system. Recent explorations there uncovered two new fossil sharks that once roamed shallow coastal waters more than 325 million years ago.



Ancient shark specialist John-Paul (JP) Hodnett of the Maryland-National Capital Parks and Planning Commission (<a href="https://www.mncppc.org/" target="_blank" rel="noreferrer noopener">MNCPPC</a>) worked with the <a href="https://www.nps.gov/subjects/fossils/index.htm">National Park Service Paleontology Program</a> to identify the fossils. 



These finds have everyone buzzing because they offer a glimpse into marine habitats that thrived when parts of what is now eastern North America were covered by a warm sea.



<h2 class="wp-block-heading" id="h-prehistoric-shark-fossil-puzzle">Prehistoric shark fossil puzzle</h2>



The newly documented sharks are Troglocladodus trimblei and Glikmanius careforum, and they are from a group known as <a href="https://www.uky.edu/KGS/fossils/fossil-month-cten.php">ctenacanth</a> sharks. 



They both measured about 10–12 feet (3–3.6 meters) long, which is similar in size to an oceanic whitetip shark.



The shark fossils were collected from various limestone formations, which were deposited during the Middle to Late <a href="https://www.nps.gov/articles/000/mississippian-period.htm">Mississippian Period</a>. 



The bigger picture is that these habitats were once submerged under shallow seas and supported a wide range of fish life. Researchers have now identified more than 70 ancient fish species in the cave system.



A partial set of jaws belonging to a young <a href="https://shark-references.com/species/view/Glikmanius-careforum">Glikmanius careforum</a> revealed fresh details about cartilage, which rarely fossilizes well. 



Cartilaginous remains of sharks are often fragile and easily destroyed by erosion, so finding them preserved in a protected space is especially rewarding.



Experts note that this newly identified material adds depth to ongoing discussions of how shark groups diversified while the supercontinent <a href="https://www.usgs.gov/faqs/what-was-pangea">Pangea</a> was taking shape.



<h2 class="wp-block-heading" id="h-collaborations-and-fieldwork">Collaborations and fieldwork</h2>



“Every new discovery at Mammoth Cave is possible due to collaborations,” said park superintendent <a href="https://www.nps.gov/maca/learn/management/index.htm">Barclay Trimble</a> of Mammoth Cave National Park. 



Researchers and volunteers have explored hidden passages, river channels, and even narrow crawlways in search of key fossils.



Members of the <a href="https://www.cave-research.org/" target="_blank" rel="noreferrer noopener">Cave Research Foundation</a> also took part in these efforts. The name Glikmanius careforum was chosen to honor that organization’s valuable support in the field.



The partial cartilage from this genus points to a short head with a strong bite, possibly used to feed on smaller fish and <a href="https://www.geo.mtu.edu/KeweenawGeoheritage/HoughtonEC/Orthocones.html">orthocones</a>, which are squid-like creatures with elongated shells.



<h2 class="wp-block-heading" id="h-fossils-help-trace-evolutionary-change">Fossils help trace evolutionary change </h2>



Troglocladodus trimblei stands out for its branching tooth design that helped it secure prey in the Mississippian seas. 



This prehistoric hunter probably shared a coastal environment with G. careforum, in waters that covered modern-day Kentucky and Alabama.



Researchers say these sharks likely thrived in nearshore habitats that teemed with bony fish, shelled organisms, and other <a href="https://www.earth.com/news/cocaine-sharks-brazilian-waters-sharpnose-sharks-rhizoprionodon-lalandii-ocean-pollution/">marine creatures</a>.



Tracing these fossils across multiple rock layers provides insights into how the environment changed over time. 



Coastal waters rose and fell as landmasses drifted toward each other, gradually merging into a single continent. 



These broader patterns helped shape the distribution and evolutionary paths of ancient sharks like T. trimblei and G. careforum.



<h2 class="wp-block-heading" id="h-how-to-preserve-shark-fossils">How to preserve shark fossils</h2>



Field teams spent long hours underground carefully mapping and collecting small fragments of teeth. A single <a href="https://www.npca.org/articles/7703-the-unveiling-of-mammoth-cave-s-history">tooth</a> from T. trimblei sparked initial interest when Superintendent Trimble first discovered it on a 2019 trip. 



Seasoned cavers and geologists coordinated to ensure safe retrieval of each piece, knowing that one misstep could damage the delicate remains.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/ctenacanth-sharks_cave-discovery_325-million-years-ago_1big.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/06/ctenacanth-sharks_cave-discovery_325-million-years-ago_1s.webp" alt="A reconstruction of the new Middle to Late Mississippian ctenacanth sharks from Mammoth Cave National Park and northern Alabama. Glikmanius careforum is seen swimming in the foreground with two Troglocladodus trimblei swimming above. Artwork by Benji Paynose" class="wp-image-1973763"/></a><figcaption class="wp-element-caption">A reconstruction of the new Middle to Late Mississippian ctenacanth sharks from Mammoth Cave National Park and northern Alabama. Glikmanius careforum is seen swimming in the foreground with two Troglocladodus trimblei swimming above. Click image to enlarge. Artwork by Benji Paynose</figcaption></figure>



Research at Mammoth Cave has led to conversations about how best to preserve fragile fossils within difficult-to-access passages. Experts say stable cave temperatures help keep these discoveries in good condition. 



Park managers have also integrated these new data into guidelines for future research so that more clues to marine life from 325 million years ago may be found.



<h2 class="wp-block-heading" id="h-why-these-shark-fossils-matter">Why these shark fossils matter</h2>



Scientists use these finds to compare local fossil collections with specimens from similar periods in other parts of the world. 



Documenting body sizes, tooth arrangements, and skeletal details helps researchers build a clearer timeline of shark <a href="https://www.earth.com/news/shark-skeletons-could-lead-to-technological-innovations/">evolution</a>.



These comprehensive studies uncover shifts in fish diversity that occurred as oceans changed and landmasses joined together. 



Experts also link fossil data with knowledge from bony fish records, coral structures, and other sea life. This combined approach paints a full picture of ancient marine habitats and shows how some species adapted while others vanished. 



The two new fossil sharks at Mammoth Cave highlight that even well-known geologic areas can hold <a href="https://www.earth.com/news/octopus-caught-riding-on-the-back-of-the-worlds-fastest-shark-in-the-open-ocean/">surprises</a> for many years.



<h2 class="wp-block-heading" id="h-future-cave-explorations">Future cave explorations</h2>



Mammoth Cave continues to yield glimpses into a vanished coastline that spanned what is now Kentucky, Europe, and northern Africa. 



T. trimblei and G. careforum are just two recent additions to an ever-expanding fossil catalog, reminding everyone that exploration still brings answers and new questions.



In many ways, these ancient sharks highlight how puzzle pieces of geologic history keep fitting together. Field teams are now eager to see what lies in deeper chambers or behind the narrow channels.



The next phase of study may involve more advanced imaging and careful excavation in lesser-known passages, guided by new mapping techniques. 



Findings like these spur a broader appreciation for the cave system’s scientific value, well beyond its length or visual features.



The study is published in the <a href="https://www.researchgate.net/publication/377873693_NEW_CTENACANTH_SHARKS_CHONDRICHTHYES_ELASMOBRANCHII_CTENACANTHIFORMES_FROM_THE_MIDDLE_TO_LATE_MISSISSIPPIAN_OF_KENTUCKY_AND_ALABAMA">Journal of Vertebrate Paleontology</a>.



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Two prehistoric sea monsters found in the world's largest cave after 325 million years

Mammoth Cave in Kentucky stretches for more than 420 miles...

When scientists on a <a href="https://www.hi.no/en/hi/news/2021/october/after-being-trapped-in-norway-by-the-pandemic,-dr.-fridtjof-nansen-is-once-again-heading-out-into-the-world">research vessel</a> off the northwestern coast of Africa hauled in their catch, they were surprised to find an unusual eel that did not match any known species. The 2-foot (0.6 meter) curiosity had fang-like teeth and a pointed head that set it apart.



It has now been identified it as a spoon-nose eel from the genus Mystriophis, and it has been named Mystriophis caboverdensis. It remains the only documented example of its kind.



According to <a href="https://www-iuem.univ-brest.fr/paddle/project/team/da-luz-alciany" target="_blank" rel="noreferrer noopener">Dr. Alciany Nascimento da Luz</a>, who was part of an international team collaborating with marine research institutes in Cabo Verde, this eel marks a special moment for local biodiversity efforts. 



The discovery also highlights how careful observation can reveal new life forms in waters that scientists survey for resource management.



<h2 class="wp-block-heading" id="h-cataloging-eel-species">Cataloging eel species</h2>



The expedition team aboard the research vessel called <a href="https://www.fao.org/newsroom/detail/Norway-and-FAO-launch-unique-state-of-the-art-oceanic-research-ship/en" target="_blank" rel="noreferrer noopener">Dr. Fridtjof Nansen</a> focused on studying fishing resources and ocean life around the <a href="https://nha.org/research/nantucket-history/history-topics/cape-verde-archipelago/" target="_blank" rel="noreferrer noopener">Cabo Verde Archipelago</a>. 



Researchers took samples at varying depths to map habitats and document marine <a href="https://www.earth.com/news/serpent-like-eel-named-after-hades-god-of-the-underworld/">diversity</a>.



Their work included cataloging eels and other underexplored species in the Eastern Central Atlantic. During these trawls, the spoon-nose eel surfaced and initially passed as an already known specimen.



<h2 class="wp-block-heading" id="h-unique-features-of-new-eel-species">Unique features of new eel species</h2>



Closer analysis showed a short, blunt snout, large eyes, and a body length of about 28 inches (0.7 meters). The dorsal fin sits in a slightly advanced position compared to its closest relatives.



“It co-occurs in the tropical eastern Atlantic with two similar looking species,” wrote Dr. Nascimento da Luz. Another trait setting it apart is the arrangement of teeth, which appear fang-like near its pointed head.



<h2 class="wp-block-heading" id="h-a-peek-into-eel-diversity">A peek into eel diversity</h2>



These tooth structures place the eel in the family <a href="https://biogeodb.stri.si.edu/sftep/en/thefishes/taxon/356" target="_blank" rel="noreferrer noopener">Ophichthidae</a>, which is known for species sometimes referred to as worm or snake eels. The family has an array of body shapes, snout types, and feeding strategies.



Scientists found that differences in fin placement and specific head ratios made it clear that this fish deserved its own name. “We have no doubt as to its uniqueness,” stated Dr. Nascimento da Luz, the lead researcher on this project.



<h2 class="wp-block-heading" id="h-clues-from-a-single-specimen">Clues from a single specimen</h2>



Though only one individual has been found, the data collected was surprisingly rich. 



Scientists used detailed morphometrics, measuring things like fin position, head-to-body ratio, and tooth shape, to distinguish it from known relatives.



DNA analysis added another layer of certainty. Researchers found a 3.6% genetic difference from its closest cousin, Mystriophis crosnieri, enough to classify it as a separate species.



<h2 class="wp-block-heading" id="h-why-spoon-nose-eel-species-matter">Why spoon-nose eel species matter</h2>



Spoon-nose <a href="https://www.earth.com/news/sushi-of-the-future-the-first-ever-lab-grown-eel-is-a-success/">eels</a> help researchers understand how fish evolve in deep-sea environments where visibility is low and prey is scarce. Their body shape, hunting tools, and fin placement all offer clues to how species adapt over time.



Because they tend to live in deeper waters, they are rarely seen. Each new find adds to the scientific puzzle of how life functions in low-light, high-pressure ecosystems that are still largely unexplored.



<h2 class="wp-block-heading" id="h-local-impact-in-cabo-verde">Local impact in Cabo Verde </h2>



Discoveries like this bring global attention to regions like Cabo Verde, encouraging investment in local marine research and training. 



They can also strengthen partnerships between local scientists and international teams working on conservation.



Increased biodiversity awareness can lead to better protection of vulnerable ecosystems. 



As more species are found in these waters, there’s growing incentive to preserve Carbo Verde habitats before they’re impacted by overfishing or climate shifts.



<h2 class="wp-block-heading" id="h-global-quest-for-new-species">Global quest for new species</h2>



Experts estimate that thousands of organisms are described every year, yet many more wait to be documented. 



This <a href="https://www.earth.com/news/eel-trade-is-pushing-another-species-to-the-brink/">eel</a> underscores how ocean surveys can uncover unexpected finds that broaden our knowledge of marine life.



Researchers named the new species after Cabo Verde to honor the location where it was discovered. Such tributes often highlight the importance of local ecosystems and their protection.



<h2 class="wp-block-heading" id="h-looking-ahead">Looking ahead</h2>



The exact habits, diet, and reproduction of the new eel species remain mysteries. The single specimen was enough for analysis of morphology, DNA sequencing, and comparisons with related species.



This discovery prompts a deeper look at the region’s underwater habitats. Further expeditions may reveal whether more spoon-nose <a href="https://www.earth.com/news/electric-eels-have-a-secret-weapon-to-generate-electricity/">eels</a> inhabit neighboring waters or if this new find is actually incredibly rare.



<h2 class="wp-block-heading" id="h-challenges-of-deep-sea-discovery">Challenges of deep-sea discovery</h2>



Finding new species like Mystriophis caboverdensis isn’t easy. Deep-sea trawling requires expensive equipment, <a href="https://www.hi.no/en/hi/news/2021/october/after-being-trapped-in-norway-by-the-pandemic,-dr.-fridtjof-nansen-is-once-again-heading-out-into-the-world" target="_blank" rel="noreferrer noopener">long expeditions</a>, and cooperation between countries and institutions.



Even when a sample is collected, identification can take years. Subtle features must be compared across museum records, and genetic testing depends on funding and lab availability.



The fact that Mystriophis caboverdensis remained unnoticed until now raises questions about how many other species slip through the cracks. Even with decades of ocean exploration, large parts of the sea remain poorly studied.



Scientists say continued investment in <a href="https://www.msc.org/en-au/what-we-are-doing/oceans-at-risk/marine-biodiversity" target="_blank" rel="noreferrer noopener">marine biodiversity</a> research could uncover even more undocumented species. Each new find helps paint a clearer picture of how ecosystems work and how they’re changing.



The study is published in <a href="https://mapress.com/zt/article/view/zootaxa.5632.2.4" target="_blank" rel="noreferrer noopener">Zootaxa</a>.



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Scientists discover a new eel species with fang-like teeth

When scientists on a research vessel off the northwestern coast...

In the waters of Lake Malawi, a single group of fish has evolved into over 800 different species in just a few million years. This rapid and concentrated evolutionary explosion has long puzzled scientists.



Now, researchers have uncovered a powerful genetic mechanism that may explain how such extreme <a href="https://www.earth.com/news/climate-mitigation-strategies-may-be-endangering-biodiversity/" target="_blank" rel="noreferrer noopener">biodiversity</a> can arise so quickly.



A recent study led by scientists from the Universities of <a href="https://www.cam.ac.uk/" target="_blank" rel="noreferrer noopener">Cambridge</a> and <a href="https://www.uantwerpen.be/en/" target="_blank" rel="noreferrer noopener">Antwerp</a> reveals that large chunks of reversed, or “flipped,” DNA in <a href="https://www.earth.com/news/curiosity-of-cichlid-fish-boosts-biodiversity-in-lake-tanganyika/" target="_blank" rel="noreferrer noopener">cichlid fish</a> act like evolutionary accelerators.



These chromosomal inversions preserve key genetic traits across generations and help fish adapt swiftly to new habitats - fueling the formation of new species at remarkable speed.



<h2 class="wp-block-heading" id="h-the-shortcut-in-our-genes">The shortcut in our genes</h2>



“Why are there so many different kinds of animals and plants on Earth?” is a question that has guided evolutionary biology for centuries.



In the case of Malawi’s cichlids, all 800-plus species share a common ancestor. Yet they’ve diversified into everything from algae-grazers to sand-sifters to open-water predators - all within the confines of one lake.



To understand this phenomenon, the researchers examined the genomes of over 1,300 individual cichlids. Some species had flipped DNA sections across five chromosomes - a genetic anomaly called a chromosomal inversion.



“We discovered that, in some species, large chunks of DNA on five chromosomes are flipped - a type of mutation called a chromosomal inversion,” said senior author Hennes Svardal from the University of Antwerp.



Ordinarily, recombination reshuffles <a href="https://www.earth.com/news/oldest-human-dna-ever-found-tells-story-of-lost-branch-on-human-neanderthal-family-tree/" target="_blank" rel="noreferrer noopener">DNA</a> each generation by mixing genetic material from both parents.



But inside these chromosomal inversions, the structure blocks recombination. As a result, organisms inherit linked gene sets together, preserving adaptations that function effectively as a group.



<h2 class="wp-block-heading" id="h-fish-supergenes-lock-in-traits">Fish supergenes lock in traits</h2>



“It’s sort of like a toolbox where all the most useful tools are stuck together, preserving winning genetic combinations that help fish adapt to different environments,” said Moritz Blumer from Cambridge’s Department of Genetics.



These preserved gene clusters, or <a href="https://www.earth.com/news/supergenes-drove-the-rapid-spread-of-common-ragweed/" target="_blank" rel="noreferrer noopener">supergenes</a>, help explain how diverse cichlid fish evolve while sharing the same lake. In sandy lake beds, inversions limit gene mixing, helping preserve each species’ unique adaptations despite a lack of barriers.



The supergenes govern traits essential to survival: vision, hearing, feeding behavior, and more. For instance, fish that live in the lake’s deep waters - some as far down as 655 feet (200 meters) - require specialized vision to navigate dim light.



They also need unique diets to survive in the nutrient-poor depths and physiology to withstand high pressure. Their supergenes lock in those abilities.



<h2 class="wp-block-heading" id="h-supergenes-in-fish-interbreeding">Supergenes in fish interbreeding</h2>



Another advantage of these DNA inversions is that they can transfer wholesale between species when different cichlids <a href="https://www.earth.com/news/28000-year-old-hybrid-child-confirms-interbreeding-between-humans-and-neanderthals/" target="_blank" rel="noreferrer noopener">interbreed</a>. This spreads entire suites of beneficial traits in one stroke.



“When different cichlid species interbred, entire inversions can be passed between them - bringing along key survival traits, like adaptations to specific environments, speeding up the process of evolution,” Blumer said.



This genetic mechanism lets adaptations transfer between species, speeding evolution without needing to evolve traits independently each time.



Researchers found these inversions often act as sex chromosomes, determining whether a fish develops as male or female. Because sex chromosomes drive speciation, this finding adds complexity to how cichlids diversify so rapidly.



<h2 class="wp-block-heading" id="h-going-beyond-fish">Going beyond fish</h2>



“While our study focused on cichlids, chromosomal inversions aren’t unique to them,” said co-senior author Richard Durbin, a professor at Cambridge’s Department of Genetics.



“They’re also found in many other animals - including humans - and are increasingly seen as a key factor in <a href="https://www.earth.com/news/evolution-is-not-as-random-as-we-thought/" target="_blank" rel="noreferrer noopener">evolution</a> and biodiversity.”



These findings reveal new ways to study the genetics of speciation. This applies not just to fish, but across all branches of the tree of life. Supergenes and inversions may be more than just quirks of DNA - they could be among evolution’s most powerful tools for generating new forms and functions.



“We have been studying the process of speciation for a long time,” Svardal said. “By understanding how these supergenes evolve and spread, we’re getting closer to answering one of science’s big questions: how life on Earth becomes so rich and varied.”



The study shows how a DNA twist can speed evolution, offering a key clue to the mystery of biodiversity. It also reveals that sometimes, nature hides its most elegant solutions in its smallest structures.



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Genetic ‘supergenes’ power explosive evolution in some fish

In the waters of Lake Malawi, a single group of...

Mercury levels in Arctic animals keep climbing even though the world has reduced new emissions. A new study shows that mercury already in the ocean is drifting northward on century-long currents and silently refueling pollution.



Researchers from <a href="https://international.au.dk/" target="_blank" rel="noreferrer noopener">Aarhus University</a> and the <a href="https://www.ku.dk/en" target="_blank" rel="noreferrer noopener">University of Copenhagen</a> analyzed more than 700 samples collected across Greenland.



The experts compared modern tissues from <a href="https://www.earth.com/news/international-polar-bear-day-keeping-moms-and-cubs-safe/" target="_blank" rel="noreferrer noopener">polar bears</a>, seals, fish, peat, and even 40-year-old archives, then matched each sample’s six mercury isotopes - slight atomic variants that act like barcodes - to known ocean pathways.



“These isotope signatures act like fingerprints, revealing the sources and transport pathways of mercury,” explained lead author Jens Søndergaard, a senior researcher at Aarhus.



<h2 class="wp-block-heading" id="h-old-emissions-ride-ocean-loops">Old emissions ride ocean loops</h2>



When smokestacks or gold mines release mercury, the vapor can circle the globe for a year before it falls out of the air. Once it sinks into seawater, however, the metal can linger for three hundred years.



The new study shows that this “legacy mercury” is now the main supplier to the Arctic. Water entering central West Greenland rides the North Atlantic’s Irminger Current and arrives with a different isotopic stamp than water feeding the north and east coasts, which drifts down from the Arctic Ocean.



In regions swept by the Atlantic branch, animals carry less total mercury but show higher values of the heavy isotope δ202Hg. Farther north and east, concentrations are higher and the isotope mix points to older Arctic stores.



<h2 class="wp-block-heading" id="h-mercury-climbs-in-arctic-predators">Mercury climbs in Arctic predators</h2>



Scientists have tracked Arctic mercury since the late 1970s, hoping to see a decline after many countries ratcheted down pollution.



Instead, concentrations in polar bears and <a href="https://www.earth.com/news/newly-discovered-species-of-toothed-whale-is-the-earliest-ancestor-of-modern-dolphins/" target="_blank" rel="noreferrer noopener">toothed whales</a> are now twenty- to thirtyfold above pre-industrial levels.



“We’ve monitored mercury in Arctic animals for over 40 years. Despite declining global emissions since the 1970s, we see no corresponding decrease in Arctic concentrations - on the contrary,” said senior author Rune Dietz, an ecologist at Aarhus.



The new isotope data show why: mercury carried by currents can take up to a century and a half to reach Greenland.



<h2 class="wp-block-heading" id="h-isotopes-trace-mercury-s-path">Isotopes trace mercury's path</h2>



Mercury atoms come in several naturally occurring forms that differ slightly in mass. Industrial smokestacks, volcanic plumes, rivers, and ocean chemistry each leave a characteristic mix.



By scanning these mixes in muscle, fur, and ancient peat layers, the team drew a map of hidden routes. In central West Greenland the isotope blend matches Atlantic inflow; in north-eastern sites it matches the high-mercury Arctic Basin.



The peat cores also tell a time-lapse story: layers laid down in recent centuries hold heavier isotopes than layers deeper in the <a href="https://www.earth.com/news/permafrost-thaw-is-a-rising-threat-to-arctic-communities/" target="_blank" rel="noreferrer noopener">permafrost</a>, confirming that modern pollution is still piling up.



<h2 class="wp-block-heading" id="h-health-impacts-of-mercury">Health impacts of mercury</h2>



“Mercury affects the immune system, reproduction, and possibly sensory functions in animals, which can impact their survival,” said co-author Christian Sonne, a professor at Aarhus.



Seals, polar bears, and seabirds already harbor levels linked to suppressed immunity and hormonal disruption. 



Indigenous communities that rely on marine mammals for food face the same toxic threat. With mercury reservoirs still drifting north, even the toughest emission cuts may not deliver quick relief.



<h2 class="wp-block-heading" id="h-arctic-slow-to-reflect-progress">Arctic slow to reflect progress</h2>



The <a href="https://minamataconvention.org/en" target="_blank" rel="noreferrer noopener">United Nations Minamata Convention</a> aims to curb new mercury emissions. The Danish team’s work explains why Arctic numbers refuse to fall despite progress elsewhere.



Ocean inventories of legacy mercury - much of it released during the 19th- and 20th-century coal age - are simply too vast and too slow-moving. Any evaluation of the treaty’s success, the authors warn, must account for that time lag.



The group is expanding its isotope surveys through the <a href="https://www.earth.com/news/microbial-awakening-arctic-food-webs-are-transforming-from-green-to-brown/" target="_blank" rel="noreferrer noopener">GreenPaths project</a> and collaborating with international programs such as WhaleAdapt to follow mercury’s course through other <a href="https://www.earth.com/news/microbial-awakening-arctic-food-webs-are-transforming-from-green-to-brown/">Arctic food webs</a>.



By stitching together isotope records from peat, glaciers, rivers, and marine life, they hope to predict hotspots years before the pollutant arrives.



<h2 class="wp-block-heading" id="h-what-can-be-done-now"><a></a>What can be done now?</h2>



Reducing modern mercury still matters; every gram kept out of the water is one less gram entering the conveyor belt.



But policymakers must pair emission goals with long-term monitoring, dietary guidance for northern communities, and studies on how climate-driven shifts in currents could speed or slow the toxic flow.



The lesson is stark: once mercury reaches the sea, it becomes a traveler with no passport expiry. And as the new isotope “fingerprints” show, the <a href="https://www.earth.com/news/forever-chemicals-threaten-arctic-wildlife-and-human-health/" target="_blank" rel="noreferrer noopener">Arctic’s wildlife</a> - and the people who depend on it - will keep feeling the aftershocks of 19th- and 20th-century pollution well into the 22nd.



The study is published in the journal <a href="https://www.nature.com/articles/s41467-025-60356-6" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



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Mercury pollution rides ocean currents north, threatening Arctic wildlife

Mercury levels in Arctic animals keep climbing even though the...

species in Schizoplacidae

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