Can farms produce enough food to feed us while still leaving space for wildlife? A new proposal says they can.



By setting aside one-fifth of farmland for nature, and tweaking everyday practices on the rest, we can help wildlife recover without sacrificing the food on our tables.



<h2 class="wp-block-heading" id="h-farming-with-wildlife-in-mind">Farming with wildlife in mind</h2>



The plan comes from ecologists at the <a href="https://www.ceh.ac.uk/">UK Centre for Ecology &amp; Hydrology</a> and the University of Alcalá in Spain. Study co-author Professor James Bullock elaborated on the importance of the research.



“Reversing <a href="https://www.earth.com/news/un-report-calls-for-global-change-to-stop-biodiversity-loss/">biodiversity loss</a> and degradation of ecosystems is essential both for nature as well as long-term global food security. But there is no single silver bullet for nature recovery and so far it has been unclear how to integrate rewilding into agricultural landscapes," said Professor Bullock. 



“Our proposed approach moves beyond land sparing versus land sharing. We believe rewilding can be interwoven into agricultural landscapes and could be key to maintaining <a href="https://www.earth.com/news/increasing-plant-based-food-production-would-have-extremely-positive-impact/">food production</a> in a way that is sustainable in the long term for people and the planet.”



<h2 class="wp-block-heading" id="h-dedicating-land-to-nature-recovery">Dedicating land to nature recovery</h2>



According to the study, fostering rewilding approaches alongside farming could create agroecological landscapes that accommodate biodiversity while remaining resilient and functionally connected. Certain incentives would encourage farmers to adopt this approach.



“While setting aside land for nature recovery could potentially be made a legal requirement for farmers and landowners, there is more likely to be acceptance and success of rewilding if there are incentives in the form of payments for ecosystem services and tax deductions,” noted Professor José María Rey Benayas, lead author on the study.



<h2 class="wp-block-heading" id="h-why-farming-needs-wildlife">Why farming needs wildlife</h2>



Modern farming has greatly increased food production since the 1940s. But this has often come at the expense of nature. 



Clearing land, using heavy fertilizers and pesticides, and removing natural features like hedgerows have pushed many plant and animal species to the edge.



This loss doesn’t just affect wildlife - it disrupts vital services that farms depend on, such as healthy soil, natural pest control, and water retention. As these services decline, the long-term productivity and resilience of farming systems are put at risk.



<h2 class="wp-block-heading" id="h-the-cost-of-declining-wildlife">The cost of declining wildlife</h2>



Across Europe and beyond, once-common species are disappearing from farmland. For example, the U.K. has lost over 40 million birds since 1970, and wild bee populations have declined in more than half of European countries, according to multiple long-term surveys.



These animals aren’t just part of the scenery - they’re key to food production. Birds eat crop pests. Bees and other insects pollinate the flowers that develop into fruits and vegetables. Their loss means greater reliance on artificial fertilisers, pesticides, and expensive manual labour.



Bringing wildlife back isn’t just a conservation goal - it’s a practical step toward more affordable and reliable <a href="https://www.earth.com/news/mixed-cover-crops-may-be-the-future-of-sustainable-farming/">farming</a>.



<h2 class="wp-block-heading" id="h-steps-to-farming-alongside-wildlife">Steps to farming alongside wildlife </h2>



The researchers suggest a four-part plan that links nature conservation with everyday farming. 



First, they recommend reserving at least 20% of farmland for nature. This space would include large patches of woodland, wetlands, and species-rich grassland to form strong core habitats. 



Second, these patches should be connected by green corridors - such as hedgerows, ponds, and strips of scrubland - that allow wildlife to move, feed, and reproduce.



Third, they propose protecting small hotspots within working fields. This would involve setting aside about 10% of cropped land for flower strips, beetle banks, and bird perches, bringing the total to the 30% global restoration goal. 



Finally, they call for small changes in daily farming practices, like reducing chemical use, planting flowers for <a href="https://www.earth.com/news/pollinators-face-extinction-risk-due-to-climate-change/">pollinators</a>, and letting livestock graze more freely to help spread seeds and support healthy soil.



<h2 class="wp-block-heading" id="h-rewilding-has-benefits-for-farmers">Rewilding has benefits for farmers</h2>



Many European regions cannot host bears or bison. However, smaller species such as lynx, wildcat, or European hare can still boost ecosystem health. Choosing the right mix depends on local conditions.



Helping wildlife can pay off in more ways than one. When farms support natural habitats, they often see practical benefits in return. 



Better soil retains more water and nutrients, which supports stronger <a href="https://www.earth.com/news/farmers-can-help-make-crops-more-resilient/">crops</a>. Pollinators and natural predators of pests can help increase yields in nearby fields. 



Farmers may also spend less on fertilizers and pesticides, lowering overall input costs. In some places, governments might provide payments or tax breaks to reward efforts that support biodiversity and ecosystem services.



<h2 class="wp-block-heading" id="h-making-room-for-wildlife">Making room for wildlife</h2>



Reaching the 20% target may be challenging for small farms, but collective action can make it achievable. At the same time, each region will need to adapt the plan to fit its local conditions. 



Areas with heavily degraded farmland have the most to gain, while places with traditional, low-impact farming may require fewer changes. 



The researchers emphasize that this is just a starting point - but the message is clear: making room for wildlife alongside farming can help secure both indigenous species and food for the future.



The full study was published in the journal <a href="https://esajournals.onlinelibrary.wiley.com/doi/10.1002/fee.2860">Frontiers in Ecology and the Environment</a>.



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Farming for wildlife: How traditional practices can protect nature

Can farms produce enough food to feed us while still leaving space for wildlife? A new proposal says they can. By setting aside one-fifth of farmland for nature, and tweaking everyday practices on the rest, we can help wildlife recover without sacrificing the food on our tables. Farming with wildlife in mind The plan comes from ecologists at the UK Centre for Ecology &amp; Hydrology and the University of Alcalá in Spain. Study co-author Professor James Bullock elaborated on the importance of the research. “Reversing biodiversity loss...

Although <a href="https://www.earth.com/news/how-does-water-travel-through-our-solar-system/">water</a> makes up 71 percent of our planet’s surface, scientists are not yet sure where and how this water originated. Many experts have previously argued that water most likely arrived to Earth from meteorites.&nbsp;



However, by analyzing melted meteorites which have been floating around in space since the formation of our solar system (four and a half billion years ago), a team of researchers led by the <a href="https://www.umd.edu/">University of Maryland</a> has discovered that these meteorites had extremely low water content. These findings rule out such meteorites as the primary source of Earth’s water, and could have major implications for the search for water – and implicitly life – on other planets.



“We wanted to understand how our planet managed to get water because it’s not completely obvious. Getting water and having surface oceans on a planet that is small and relatively near the sun is a challenge,” said study lead author Megan Newcombe, a professor of Geology at Maryland.



The scientists analyzed seven melted, or achondrite, meteorites that crashed into our planet billions of years after splintering from at least five astronomical objects which collided to form planets in our solar systems, known as “planetesimals.” During melting, these planetesimals were heated up by the decay of radioactive elements in the early solar system’s history, causing them to separate into layers with a crust, mantle, and core.



The experts used an electron microprobe to measure these objects’ levels of magnesium, iron, calcium, and silicon, as well as a secondary ion mass spectrometry instrument to measure their water contents. While some of the meteorite samples came from the inner solar system, where conditions are assumed to be warm and dry, others originated form colder and icier outer areas of our solar system.



“We knew that plenty of outer solar system objects were differentiated, but it was sort of implicitly assumed that because they were from the outer solar system, they must also contain a lot of water,” said study co-author Sune Nielsen, a geologist at the <a href="https://www.whoi.edu/">Woods Hole Oceanographic Institution</a>. “Our paper shows this is definitely not the case. As soon as meteorites melt, there is no remaining water.”&nbsp;



In fact, the analysis revealed that in these achondrite meteor samples – regardless of their origin – water comprised less than two millionth of their mass, suggesting that the heating and melting of planetesimals causes near-total water loss. However, another type of meteorites called “carbonaceous chondrites” were found to contain up to 20 percent of water, making them the most likely source for the origin of water on Earth. “This finding implies that substantial amounts of water could only have been delivered to Earth by means of unmelted material,” the authors wrote.



Due to the inherent relation between water and life, these findings have important implications beyond Geology, particularly in the ongoing search for extraterrestrial life.&nbsp;



“Water is considered to be an ingredient for life to be able to flourish, so as we’re looking out into the universe and finding all of these exoplanets, we’re starting to work out which of those planetary systems could be potential hosts for life. In order to be able to understand these other solar systems, we want to understand our own,” Newcombe concluded.



The study is published in the journal <a href="http://dx.doi.org/10.1038/s41586-023-05721-5">Nature</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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What are the origins of water on Earth?

Although water makes up 71 percent of our planet’s surface,...

A team of researchers led by <a href="https://www.flinders.edu.au/">Flinders University</a> in Australia has recently discovered and described the largest bird of prey that ever lived on the Australian continent – an <a href="https://www.earth.com/news/eagle-fossil-represents-a-unique-branch-of-the-family-tree/">eagle</a> twice the size of the modern-day apex predator the wedge-tailed eagle, named by the experts Dynatoaetus gaffae&nbsp;(Gaff’s powerful eagle).&nbsp;



Closely related to Old World vultures of Asia and Africa, as well as to the critically endangered monkey-eating or Philippine Eagle, this now extinct raptor soared over southern Australia in the late Pleistocene 60,000 years ago. It had a wingspan extending to up to three meters and powerful talons wide enough to easily grab a small kangaroo or koala.&nbsp;



The researchers discovered a variety of large fossil bones scattered across the Flinders Ranges, the Naracoorte and Wellington Caves, and near Cooper Creek in the Lake Eyre Basin.&nbsp;



“We were very excited to find many more bones from much of the skeleton to create a better picture and description of these magnificent long-lost giant extinct birds,”&nbsp;said study lead author Ellen Mather, a paleontologist at Flinders.&nbsp;



“This discovery reveals that this incredible family of birds was once much more diverse in Australia, and that raptors were also impacted by the mass extinction that wiped out most of Australia’s megafauna.”



“It was ‘humongous’ – larger than any other eagle from other continents, and almost as large as the world’s largest eagles once found on the islands of New Zealand and Cuba, including the whopping extinct 13kg Haast’s eagle of New Zealand,” added senior author Trevor Worthy, an associate professor of Vertebrate Paleontology at the same university.



“It had giant talons, spreading up to 30cm, which easily would have been able to dispatch a juvenile giant kangaroo, large flightless bird, or other species of lost megafauna from that era, including the young of the world’s largest marsupial&nbsp;Diprotodon&nbsp;and the giant goanna&nbsp;Varanus priscus.”



According to the researchers, this massive predator most likely coexisted with still living species such as the wedge-tailed eagle. Considering that the Australian birds of prey used to be more diverse, the fact that the wedge-tailed eagle managed to coexist with the giant Dynatoaetus without being outcompeted could mean that its habitat and feeding grounds were more limited in the past.



Dynatoaetus is estimated to have become extinct during the time of the megafaunal mass extinction peaking around 50,000 years ago, which marked a drastic decline in the diversity and function of Australian raptors.



An in-depth description of this eagle is published in the <a href="http://dx.doi.org/10.1007/s10336-023-02055-x">Journal of Ornithology</a>.&nbsp;



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Australia's largest eagle was a massive predator 

A team of researchers led by Flinders University in Australia...

Multicoloured,Asian,Ladybird,/,Ladybug,(harmonia,Axyridis),Walks,On,A

Some animal species use bright <a href="https://www.earth.com/news/how-animals-got-their-complex-color-patterns/">color patterns</a> to keep predators away – a phenomenon known as “aposematism.” Scientists have long pondered how aposematic animals can survive long enough for this warning signal coloration to evolve before predators learn to avoid them.&nbsp;



Now, a team of scientists from <a href="https://carleton.ca/">Carleton University</a> in Canada and <a href="https://en.snu.ac.kr/">Seoul National University</a> in South Korea has found that, during evolution, aposematism emerged through intermediate steps. Initially, coloration was only visible when an animal was fleeing or intentionally displaying color patterns that are normally hidden.



Evolutionary adaptations to avoid being tracked by predators have led to a considerable variation in the diversity of animal color patterns. While some species developed camouflage coloration, enabling them to blend into the background in order to avoid detection, others evolved to exhibit bright colors as conspicuous warning signals that advertise defense mechanisms such as venom, toxicity, or aggression.



The researchers performed a large-scale phylogenetic analysis of over 1,400 amphibian species with known warning coloration along nine different evolutionary models. They discovered that the evolutionary transition from camouflage coloration to aposematism was rarely direct and most likely emerged through a series of intermediary steps in which warning coloration was first hidden and only selectively visible.



According to the scientists, predators encountering such hidden warning signals probably continued to treat permanently aposematic mutants with caution, a phenomenon providing selective pressure for warning coloration to become a permanent adaptation.&nbsp;



“Macroevolutionary studies on animal coloration should take into account these underappreciated hidden signals, which are both common and widespread across the animal kingdom, to advance our understanding of the evolution of antipredator defenses," wrote the researchers.



"Indeed, many animal taxa such as snakes, fishes, and a variety of arthropods include species that are cryptic, aposematic, and have hidden conspicuous signals. We therefore encourage follow-up studies in other taxa to evaluate the generality of the steppingstone hypothesis as a route to aposematism."



The study is published in the journal <a href="http://dx.doi.org/10.1126/science.ade5156">Science</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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How did warning coloration evolve in animals?

Some animal species use bright color patterns to keep predators...

Although there are a lot of potentially useful raw materials bound up in used plastic products such as food wrap or grocery bags, until recently it has been much cheaper to continue producing more of these single-use plastics than to recover and recycle them. Now, a team of researchers led by the Department of Energy’s <a href="https://www.pnnl.gov/">Pacific Northwest National Laboratory</a> (PNNL) has managed to crack the code that stymied prior attempts to break down these persistent plastics.



Usually, <a href="https://www.earth.com/news/recycling-is-not-enough-to-address-the-plastic-crisis/">recycling</a> plastics requires “cracking” or splitting apart the powerful and stable chemical bonds that also make these products so persistent in the environment. This process requires very high temperatures, and is thus expensive and energy intensive.&nbsp;



However, the experts succeeded in combining the cracking step with a second reaction step which immediately completes the conversion to a liquid gasoline-like fuel without unwanted byproducts. This second step deploys what are known as alkylation catalysts, which provide a chemical reaction currently deployed by the petroleum industry to improve the octane rating of gasoline. Crucially, this reaction immediately follows the cracking step in a single reaction vessel, near room temperature&nbsp;(70 degrees Celsius/158 degrees Fahrenheit).



“Cracking just to break the bonds results in them forming another one in an uncontrolled way, and that’s a problem in other approaches,” said&nbsp;study co-author Oliver Y. Gutiérrez, a chemist at PNNL. “The secret formula here is that when you break a bond in our system, you immediately make another one in a targeted way that gives you the end product you want. That is also the secret that enables this conversion at low temperature.”



“The fact that [the petroleum] industry has successfully deployed these emerging alkylation catalysts demonstrates their stable, robust nature,” added senior author&nbsp;Johannes Lercher, the director of PNNL’s<a href="https://www.pnnl.gov/projects/institute-integrated-catalysis">&nbsp;Institute for Integrated Catalysis</a>. “This study points to a practical new solution to close the carbon cycle for waste plastic that is closer to implementation than many others being proposed.”



The scientists found that this process functions only for low-density polyethylene products (LDPE), such as plastic films and squeezable bottles, and polypropylene products (PP), which are not usually collected in recycling programs in the U.S. By contrast, high-density polyethylene (HPDE) would require a pretreatment in order to allow the catalyst access to the bonds that it needs to crack.



“To solve the problem of persistent waste plastic, we need to reach a critical point where it makes more sense to collect it and return it to use than to treat it as disposable. We’ve shown here that we can make that conversion quickly, at mild conditions, which provides one of the incentives to move forward to that tipping point,” Lercher concluded.



The study is published in the journal <a href="http://dx.doi.org/10.1126/science.ade7485">Science</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Scientists find cheaper method of recycling plastics

Although there are a lot of potentially useful raw materials...

The correct timing of an exercise session may influence the extent of fat <a href="https://www.earth.com/news/age-related-changes-in-metabolism-dont-match-our-expectations/">metabolism</a> that takes place, as the body strives to keep glucose and energy levels in balance. This is what scientists have discovered in laboratory mice.&nbsp; A new study from researchers at the <a href="https://ki.se/en">Karolinska Institutet</a> in Sweden, and the University of Copenhagen in Denmark, shows that mice that did exercise in an early active phase, which corresponds to morning exercise in humans, increased their metabolism more than mice that did exercise at a time in the day when they usually rest.&nbsp;



Physiological processes in the bodies of animals are affected by circadian rhythms, the natural 24-hour cycles that respond primarily to input of light and darkness. These changes are mediated by molecular clocks that switch specific genes on or off in cells. A variety of factors including hormones, temperature, food-intake, and exercise can act on tissue-specific molecular clocks to alter the expression of genes that influence metabolism, all in a way that relates to the time of day. This system helps to anticipate and adapt an organism’s physiology and behavior to the activities that take place during different phases of the day.&nbsp;



In order to find out whether the timing of exercise affects the metabolism of fat, the researchers studied the adipose tissue of mice after a session of high-intensity exercise performed at two different points of the daily cycle – when mice began to get active, and when they were in the early stages of resting. These times correspond to a late morning and a late evening exercise session, respectively, in humans. The researchers studied various markers of fat metabolism and analyzed which genes were active in adipose tissue after exercise.



The results, published in the journal <a href="http://dx.doi.org/10.1073/pnas.2218510120">PNAS</a>, showed that certain fatty acids, which are the breakdown products of stored fats, were present at higher concentrations in the mice’s blood after early active phase exercise, but this was not the case after exercise during the early rest phase. This indicates that fat is metabolized as a source of energy more actively when exercise takes place during the early active phase, and that the metabolic response to exercise is dependent on the time of day that exercise takes place.&nbsp;



The researchers also found that physical activity at an early active phase increased the expression of genes involved in the breakdown of adipose tissue, in thermogenesis (heat production) and in the proliferation of mitochondria (where energy for the exercise is generated) in the adipose tissue, all of which indicate a higher metabolic rate. These effects were observed only in mice that exercised in the early active phase and were independent of their food intake.



”Our results suggest that late morning exercise could be more effective than late evening exercise in terms of boosting the metabolism and the burning of fat, and if this is the case, they could prove of value to people who are overweight,” said Professor Juleen Zierath from the Department of Molecular Medicine and Surgery and the Department of Physiology and Pharmacology at the Karolinska Institutet.



Although experimental results derived from mice may not always be directly applicable to humans, the two species do share many basic physiological functions, and mice are a well-established model for human physiology and metabolism. However, there are also important differences, such as the fact that mice are nocturnal.



“The right timing seems to be important to the body’s energy balance and to improving the health benefits of exercise, but more studies are needed to draw any reliable conclusions about the relevance of our findings to humans,” said Professor Zierath.



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By <a href="mailto:bosman@truewan.co.za">Alison Bosman</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Late morning exercise may burn more fat

The correct timing of an exercise session may influence the...

At a time when infectious diseases play a significant role in the media and popular culture – due to the Covid-19 pandemic and TV shows such as “The Last of Us,” in which a deadly, brain-infecting fungus is wiping out most of the human population – many scientists around the world are trying to better understand how viruses, bacteria, and fungi affect not only humans but also other animals.&nbsp;



A team of researchers led by the <a href="https://www.sfsu.edu/">San Francisco State University</a> (SFSU) has recently investigated the emerge and spread of a deadly <a href="https://www.earth.com/news/a-fungus-has-become-more-deadly-thanks-to-jumping-genes/">fungus</a> (Batrachochytrium dendrobatidis&nbsp;or&nbsp;Bd) among amphibians in Africa. Since it affects the skin of amphibians, which is much more important for their survival than it is for humans, this pathogen is highly detrimental for amphibians worldwide, currently contributing to a significant loss in biodiversity.



“When [amphibian] skin starts to change thickness, it basically creates a condition where they can’t maintain their internal processes and they die,” said study co-author Eliseo Parra, a biologist at SFSU. “If infecting a mammal, it might affect your fingernails or something you wouldn’t even notice, but amphibians (frogs, salamanders) use their skin to breathe. It’s a very critical part of their body.”



Since this fungus appears to be lethal for many amphibian populations but not others, the experts aimed to better understand this pathogen’s emergence, evolution, and prevalence, focusing on under-studied areas in Africa. Through a combination of methods including the testing of thousands of frog specimens, the examination of previous scientific studies of this disease, and the genotyping of Bd lineages, the researchers mapped how the fungus interacted with amphibians across the African continent over the past 165 years.



The analyses revealed that, until 2000, there was low prevalence and limited spread of the disease in Africa. Afterwards, prevalence spiked from 3.2 percent to 18.7 percent and Bd became more widespread geographically and increasingly deadly for a large number of amphibians. The scientists identified two main lineages of the fungus in Africa: a global, more dangerous lineage, and a local lineage which, although it was previously thought to be more benign, new evidence shows that it can also be quite destructive. By using this data, the researchers created a model estimating that eastern, central, and western Africa are the regions most vulnerable to Bd.



“We’re trying to extend our findings and make predictions about what could happen in the future. It’s the best way to make our study worth the work,” said senior author Vance Vredenburg, the Associate Chair of the Department of Biology at SFSU. “There are nearly 1,200 amphibian species in Africa. We wanted to say where are the riskiest places for outbreaks. Those will probably be the places where you have the most hosts in one place.”



“It’s very important to note that&nbsp;Bd&nbsp;didn’t spread worldwide without humans helping in one way or another. It’s not the first pathogen that affects hundreds of species worldwide and it’s not going to be the last,” concluded co-author Hasan Sulaeman, a biologist at the same university.



The study is published in the journal <a href="https://doi.org/10.3389/fcosc.2023.1069490">Frontiers in Conservation Science</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Deadly fungus threatens African amphibians

At a time when infectious diseases play a significant role...

A new study led by the <a href="https://www.ualberta.ca/index.html">University of Alberta</a> in Canada has found that, during an <a href="https://www.earth.com/news/poor-sleep-increases-risk-of-infection/">infection</a>, it may be better to let a mild fever run its course instead of automatically reaching for medication. Although the research was conducted on fish, the experts suggest that such an approach to illness might prove beneficial for humans too.



In a laboratory setting, the scientists infected fish with bacteria and tracked and evaluated their behavior using machine learning algorithms. The investigation revealed that their outward symptoms – which were then matched to important immune mechanisms inside the animals - were strikingly similar to those of humans during infections, including immobility, malaise, and fatigue. 



Most importantly, moderate fever appeared to help to clear the fish of infection in about a week, which was half the time it took for those not allowed to exert fever. In addition, untreated moderate fever played a crucial role in controlling inflammation and repairing damaged tissue.



“We let nature do what nature does, and in this case it was very much a positive thing,” said study senior author Daniel Barreda, an immunologist at Alberta, suggesting that we should resist reaching for fever medications such as non-steroidal anti-inflammatory drugs at the first signs of developing a mild fever. “They take away the discomfort felt with fever, but you’re also likely giving away some of the benefits of this natural response.”&nbsp;



While the health advantages of natural fever in humans are not yet confirmed, since the mechanisms driving and sustaining fever have been evolutionarily conserved across the animal kingdom for nearly 550 million years, it is reasonable to expect similar benefits in the case of humans too.&nbsp;



“Our goal is to determine how to best take advantage of our medical advances while continuing to harness the benefits from natural mechanisms of immunity,” Barreda concluded.



The study is published in the journal <a href="http://dx.doi.org/10.7554/eLife.83644">eLife</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Moderate fever can help clear infections faster

A new study led by the University of Alberta in...

The <a href="https://www.earth.com/news/deadly-disease-spread-by-tasmanian-devils-is-evolving/">Tasmanian devil</a> is Australia’s apex terrestrial predator. Since most of these animals are known to be “individual specialists,” feeding on the same food items consistently over time, human impacts on their environment could be influencing whether they have access to their favorite foods, according to a recent study led by the <a href="https://www.unsw.edu.au/">University of New South Wales</a> in Sydney (UNSW Sydney).



“We found Tasmanian devil populations had different levels of variation in their diet depending on their habitat,” said lead author Anna Lewis, a doctoral candidate at UNSW Sydney. “The more that habitat was impacted by humans, the more restrictive the diet became.”



The experts investigated the diets of Tasmanian devil populations across habitats with various levels of disturbance - ranging from undisturbed rainforests to clear pastures – by analyzing stable isotopes from whisker samples. They discovered that devils in human-impacted environments, such as cleared land or regenerated native forests, fed primarily on medium-sized mammals, while in undisturbed areas like rainforests, they ate a broader range of prey and incorporated smaller animals, such as birds, into their diets.



“We found devils in heavily altered areas like cleared land fed on a smaller range of prey compared to populations living in ancient undisturbed regions, who had much more variety in their diet,” Lewis reported. “They may be turning to human-derived sources of food, such as highway roadkill, which are more readily available.”



Interestingly, devils living in regenerated forests also ate a smaller variety of food items, suggesting that, despite appearances, regenerated land lack complex features such as tree hollows in large old trees, which support the diversity of small mammals and birds devils living in rainforests consume.



According to the scientists, devils with limited food opportunities run the risk of interacting more frequently with their conspecifics around carcasses, possibly leading to the proliferation of a highly contagious and lethal cancer, the Devil Facial Tumor Disease (DFTD), which has already reduced local devil populations by 82 percent.



“The highest rate of cancer transmission other than during the mating season occurs when they’re feeding around these large carcasses. So, there could be an increased chance for the disease to spread amongst devils, and the devils themselves are also at risk of being hit while feeding,” Lewis explained.



These findings highlight the urgent need to protect what remains of untouched landscapes for the benefit of both Tasmanian devils and their prey. 



“It’s apparent there is much more diversity of species available in these old-growth forests, and the devils are shining a light on how vital these pristine areas are, and the urgent need to preserve what remains from the constant threat of clearing and mining,” concluded senior author Tracy Rogers, an ecologist at UNSW Sydney.



The study is published in the journal <a href="http://dx.doi.org/10.1038/s41598-023-30490-6">Nature Scientific Reports</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Humans have restricted the diets of Tasmanian devils

The Tasmanian devil is Australia’s apex terrestrial predator. Since most...

To cut carbon emissions, large shipping vessels could be retrofitted with sails so that they can be powered by wind.&nbsp;



A new initiative from the University of Southampton will investigate how modern vessels perform on the ocean when fitted with wing-sails. The experts seek to explore the potential of the technology to decarbonize the UK’s maritime sector.



Lead scientist Dr. Joseph Banks said that global shipping, a large source of emissions, needs to be decarbonized quickly.



“Ships powered by wind is obviously nothing new – but almost every large vessel operating today is powered by fossil fuels, leaving a lasting mark on the environment. While new wind-assist technologies are being developed, many are not ready for market and their predicted fuel savings have not been independently verified at sea, which is why UK-funded research projects like this are so important," said Dr. Banks.&nbsp;



The grants for the Winds of Change project were provided by the Department for Transport and Innovate UK, which is working to transform the UK into a world-leader for clean maritime equipment.



Scientists will test the impact of a retractable 20 meter-high FastRig wing-sail retrofitted on the commercial ship the Pacific Grebe – a 105 meter vessel.



“This is an innovative project because the technology can be retrofitted to pre-existing vessels to quickly reduce emissions from the existing ships and help create quieter, emission-free ships in the future that do no harm to ocean environments and improve air quality in ports towns and cities," said Dr. Banks.&nbsp;



“Our team of researchers will investigate the complex interactions between the wing-sails and the ship hydrodynamics enabling accurate predictions of vessel performance which will be compared to the demonstration vessel Pacific Grebe as part of the project."



Wind power is the fastest way for the sector to reduce emissions. The team hopes their new tool, which predicts the fuel savings delivered by the wing-sails, will drive further investment in marine technology and promote the exciting field of Maritime Engineering.&nbsp;



To learn more about this new research, visit <a href="http://www.southampton.ac.uk/smmi">www.southampton.ac.uk/smmi</a>.



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By <a href="mailto:katherinebucko@gmail.com">Katherine Bucko</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Wind could be used to power cargo ships

To cut carbon emissions, large shipping vessels could be retrofitted...

In Washington State, bald eagles and dairy farmers exist in a mutually beneficial relationship. This win-win connection is driven by the impact of climate change on eagles' traditional winter diet of salmon carcasses, and the increase in eagle abundance following decades of conservation efforts.



Typically, the narrative around birds and farmers is combative due to livestock predation. However, many farmers have grown to appreciate the services that eagles provide, which includes carcass removal and pest control.



Researchers at the <a href="https://www.washington.edu/">University of Washington</a> and Trinity Western University in Canada conducted interviews with farmers on dairy operations to better understand this unique relationship. The study was motivated by lead author Ethan Duvall’s research showing that eagles have been redistributing from rivers to farmland over the past 50 years.



"Climate change has altered the chum salmon spawning schedule, causing them to run earlier in the winter," said Duvall. "Now the salmon are spawning when annual Nooksack River flooding is at its peak. The fish who spawn and die are swept away by the high water instead of being deposited on shore where the eagles can easily access them."



Many rivers in the Pacific Northwest have experienced dramatic salmon population declines, eliminating winter resources for eagles. To adapt, eagles have turned to dairy farm by-products resulting from the births and deaths of cows and prey on waterfowl populations in agricultural areas.



"We know this positive interaction between farmers and bald eagles is not the norm in many other agricultural areas, especially near free-range poultry farms where the eagles snatch chickens," said Duvall.



"But this study gives me hope that, moving forward, farmers, wildlife managers, and conservationists can come together to think critically about how to maximize benefits for people and wildlife in the spaces they share."



The research is published in the journal <a href="http://dx.doi.org/10.1002/ecs2.4456">Ecosphere</a>.



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By <a href="mailto:katherinebucko@gmail.com">Katherine Bucko</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Farmers and bald eagles can coexist peacefully

In Washington State, bald eagles and dairy farmers exist in...

During the Covid-19 pandemic, doctors noticed that children were less affected by the virus than adults and seniors. Researchers with <a href="https://ki.se/en">Karolinska Institutet</a>, the Universities of Bern (Switzerland), Oslo (Norway), and Linköping University (Sweden) have discovered that this phenomenon may be partially explained by children's exposure to the common cold, which produces memory T-cells that could help fight the COVID-19 virus.&nbsp;



To conduct their study, the scientists collected 48 blood samples from children between 2 and 6 years old and 94 samples from adults between 26 and 83 years old. They also included 59 samples from people who had recently recuperated from COVID-19.



Study co-author Annika Karlsson led the research at the Department of Laboratory Medicine, Karolinska Institutet. She explained why children have more immunity than adults and how their findings are important for future epidemiology research.



“These reactions are especially strong early in life and grow much weaker as we get older. Our findings show how the T-cell response develops and changes over time and can guide the future monitoring and development of vaccines," said Karlsson.



According to the analysis, children as young as two years old seemed to benefit from this immunity. Still, more research is needed to understand how our immune response changes as we get older.



“Next, we’d like to do analogous studies of younger and older children, teenagers and young adults to better track how the immune response to coronaviruses develops from childhood to adulthood,” said study co-first author Marion Humbert.



The study was supported by the Swedish Research Council, Region Stockholm (CIMED), Karolinska Institutet, the Knut and Alice Wallenberg Foundation, and the European Research Council.



The research is published in the journal <a href="https://www.pnas.org/doi/10.1073/pnas.2220320120">Proceedings of the National Academy of Sciences</a>.



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By <a href="mailto:nire518@gmail.com">Erin Moody</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer



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Common cold helped protect children from COVID-19

During the Covid-19 pandemic, doctors noticed that children were less...

A new study from the <a href="https://vet.tufts.edu/">Cummings School of Veterinary Medicine</a> has revealed that the deaths of hundreds of seals in New England were caused by bird flu. The research is the first to link a large scale mortality event in wild mammals to avian influenza.&nbsp;



In the summer of 2022, more than 330 New England harbor and gray seals died along the North Atlantic coast. The researchers have connected this shocking event to an outbreak of avian influenza (HPAI) in the region.



The Tufts Wildlife Clinic has been conducting avian influenza surveillance since January 2022, which is shortly after the H5N1 strain arrived from Europe. The testing has revealed that at least three strains of avian influenza have crossed the Atlantic, and there have been consistent waves of bird infections.



In collaboration with NOAA’s Greater Atlantic Region Marine Mammal Stranding Network, the team also tested seals for bird flu.&nbsp;



“We have a better resolution and greater depth of detail on this virus than before because we were able to sequence it and detect changes almost in real time,” said study co-first author Wendy Puryear. “And we have pairings of samples, sometimes literally from a bird and a seal on the same beach.”



“Because of the genetic data that we gathered, we were the first to see a strain of the virus that's unique to New England. The data set will allow us to more meaningfully address questions of which animals are passing the virus to which animals and how the virus is changing,” said co-first author Kaitlin Sawatzki.



Domestic poultry and seabirds are highly susceptible to the H5N1 strain of bird flu. This particular strain is responsible for about 60 million poultry deaths in the U.S. since October 2020.&nbsp;



The experts determined that at the time of the seal mortality event in New England, seagulls were getting hit hard by the H5N1 virus. There are lots of ways gulls and other birds may transmit the virus to seals, and not just through direct contact, noted the researchers.



The highly pathogenic H5N1 is associated with a death rate of nearly 100 percent among domestic and wild birds, and the Tufts research indicates that there is a similar fatality rate for wild mammals. According to the study authors, none of the stranded seals that tested positive for bird flu recovered.



“It's not surprising that you might have transmission between the seals, because it has happened with low pathogenic avian influenza,” said Puryear. “However, we can't say definitively whether or not there has been mammal-to-mammal transmission of HPAI.”



“To get strong evidence of mammal-to-mammal transmission, you need two things: lots of infected animals and time,” explained Sawatzki. “Time for the virus to mutate, and time for the mutated virus to be transmitted to another seal."



"As the virus acquires mutations, we can see shared mutations in the sequences that are specific only to mammals and that haven’t been seen in a bird before. We had the numbers, but this outbreak didn't last long enough to provide evidence for seal-to-seal transmission.”



The team found evidence that the virus had mutated during the mortality event, but there has not been a case of bird flu in seals along the Atlantic coast since the end of summer 2022.



The CDC reports that the risk to the public remains low, with less than 10 human cases of H5N1. In these cases, the individuals had direct contact with infected poultry.



The ultimate public health threat associated with bird flu, however, is not yet known. According to the World Health Organization, 868 cases of human infection with H5N1 have been reported worldwide since 2003, and the fatality rate was over 50 percent.



The study is published in the journal <a href="http://dx.doi.org/10.3201/eid2904.221538">Emerging Infectious Diseases</a>.



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Bird flu killed hundreds of seals in New England last year

A new study from the Cummings School of Veterinary Medicine...

Scientists are transforming chocolate into a functional food by infusing it with probiotics and prebiotics, aiming to create a treat that satisfies cravings while supporting gut health. 



The challenge lies in maintaining chocolate's beloved texture and flavor while adding health benefits.



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Probiotics - beneficial microbes that balance gut bacteria and aid digestion - are typically fragile and can be destroyed by stomach acid or processing. 



Prebiotics act as food for these microbes, helping them thrive. Together, they form "synbiotics," a powerful health combination.



Researchers Smriti Gaur and Shubhi Singh from India's Jaypee Institute of Information Technology took an innovative approach, using natural prebiotics like corn and honey instead of complex processing methods. 



They created five chocolate varieties: a control and four synbiotic versions containing different combinations of prebiotics, probiotics (Lactobacillus strains), and flavor enhancers (cinnamon or orange).



Laboratory simulations of human digestion showed the probiotics remained viable for over five hours, suggesting they could survive long enough to benefit gut health.



Taste tests were positive, with researchers particularly enjoying the orange-flavored variety, describing it as having "vibrant citrus notes" complementing the "rich cocoa" with a "luxurious" texture.



This research represents just the beginning. With further refinement of strains, textures, and flavors, chocolate could evolve beyond mere indulgence to become a functional food that nourishes while it delights.



The study is published in the journal <a href="https://pubs.acs.org/doi/10.1021/acsfoodscitech.4c00741" target="_blank" rel="noreferrer noopener">ACS Food Science &amp; Technology</a>.

Is chocolate the next nutritional powerhouse?

Scientists are transforming chocolate into a functional food by infusing...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Nushagak Bay, a large estuary in southwest Alaska. Nushagak runs mainly north to south and exits in Bristol Bay, a large body of water in the Bering Sea.



"The bay is primarily fed by the Nushagak River, which begins in the Alaska Range and flows southwest approximately 450 km. The bay is also fed by several additional rivers including the Wood, Igushik, Snake and Weary rivers," says ESA.



"The dark colors of the Nushagak River are most likely due to tannins or lignins (chemical substances found in plants). Tannins and lignins from roots, leaves, seeds, bark and soil can leach into the water and give it a brown or even black colour. The sediments then flow southwards where it is mixed with the bluer waters of the bay."



Video/ Image Credit: ESA



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Nushagak Bay in southwest Alaska

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Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> (ACS) reveals that proteins on flu viruses are actually flexible, tilting and waving in a “breath-like” motion. According to the experts, these proteins could be used to better defend against the flu.



"The main antigenic targets of influenza virus are two surface glycoproteins, hemagglutinin (HA) and neuraminidase (NA). Whereas the structural and dynamical properties of both glycoproteins have been studied previously, the understanding of their plasticity in the whole-virion context is fragmented," wrote the researchers.



To investigate, the team conducted detailed simulations of the influenza A H1N1 virion, or the swine flu. The experts concluded that the visualizations show many new vulnerable states of flu viruses, which could improve future vaccines and antiviral drugs.



Video/ Image Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Flu viruses are more flexible than expected

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Lake Trasimeno, which is located west of Perugia in central Italy. It is the fourth largest lake in the country. While Trasimeno’s water level varies, it has a maximum depth of approximately six meters.&nbsp;



"In this Copernicus Sentinel-2 image, captured on 6 August 2022, the lake’s emerald green colour is likely due to the presence of phytoplankton. Streaks in the water, particularly visible in the west, indicate the presence of soil and sediments which have been stirred up by winds. Dark colored waters in the southern part of the lake indicate a presence of submerged and floating macrophytes (aquatic plants) as well as algae," says ESA.



"Surrounded by hills on three sides, Trasimeno is subject to heavy storms created by winds, especially from the north and west. There are three islets in the lake: Maggiore, Minore and Polvese (the largest). The lake’s shores are sparsely inhabited with only two popular villages: Castiglione del Lago and Passignano sul Trasimeno."



"Italy is experiencing its worst drought in 70 years which has affected drinking water supplies, hydroelectric power and agricultural production. High temperatures, hot winds and lack of rainfall are the main causes of drought in the Umbrian region which saw Lake Trasimeno’s drop 1.3 m, reaching the limit of the hydrometric zero in July 2022."



Video/Image Credit: ESA&nbsp;



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Lake Trasimeno in Central Italy

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Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes a new self-powered nanosensor that can instantly detect mercury contamination with the tap of a finger.&nbsp;



The oxidized form of mercury can be harmful when it is ingested through contaminated water or food. This makes it necessary for experts to develop sensors that can quickly and accurately detect the presence of mercury.&nbsp;



Zong-Hong Lin and colleagues have now created a triboelectric nanosensor (TENS) that can detect mercury by simply by touching a sample. According to the researchers, their TENS could serve as the basis for similar devices to safely and remotely monitor other pollutants.



Video Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Detecting mercury contamination with the tap of a finger

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> explores the ability of salt to transform the way that foods and beverages taste. Salt is known to cover up undesirable flavors, such as bitterness in coffee or beer, but how exactly does sodium chloride change the taste of other compounds?



One previous study showed that, not only does salt suppress bitterness, but also enhances sweetness and sourness. Another study revealed that bitterness reduction by salt seems to be happening at the tongue receptor level as well as in the brain.&nbsp;



While it is known that salt taste is mediated by the presence of sodium channels in the form of taste buds, experts believe that there is also an unknown receptor responsible for how we taste salt that has not yet been identified.&nbsp;



Video Credit: ACS Reactions



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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How does salt makes things taste better?

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Santiago, the capital city of Chile. The city is located in the center of the Santiago Metropolitan Region, which has a population of about eight million people.&nbsp;



'The weather of Santiago resembles the Mediterranean climate with dry and warm summers with temperatures reaching up to 35°C (from October to March) and cool and humid winters that can drop to 0°C (from April to September)."



"The city lies in the centre of the country’s central valley around 80 km from the Pacific Ocean to the west and borders Argentina to the east. A tiny part of Argentina is visible in the top-right corner of the image where the mountain crest of the Andes Mountains acts as a divider between the two countries," says ESA.



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Santiago, Chile in South America

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Spiral,Galaxy,,Illustration,Of,Milky,Way

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Astronomers at <a href="https://www.jhu.edu/">Johns Hopkins University</a> have created an interactive map of the universe, including the actual position and real colors of 200,000 galaxies. The map allows the public to access data that was previously only available to scientists.



The map was developed using data collected by the Sloan Digital Sky Survey. For over two decades, a telescope in New Mexico was aimed at slightly different locations to capture the night sky.&nbsp;



"Growing up I was very inspired by astronomy pictures, stars, nebulae and galaxies, and now it's our time to create a new type of picture to inspire people," said map creator Brice Ménard, a professor at Johns Hopkins. "Astrophysicists around the world have been analyzing this data for years, leading to thousands of scientific papers and discoveries. But nobody took the time to create a map that is beautiful, scientifically accurate, and accessible to people who are not scientists. Our goal here is to show everybody what the universe really looks like."



"In this map, we are just a speck at the very bottom, just one pixel. And when I say we, I mean our galaxy, the Milky Way which has billions of stars and planets. We are used to seeing astronomical pictures showing one galaxy here, one galaxy there or perhaps a group of galaxies. But what this map shows is a very, very different scale."



"From this speck at the bottom, we are able to map out galaxies across the entire universe, and that says something about the power of science."



The <a href="https://mapoftheuniverse.net/">interactive map</a> is available online, where it can be downloaded for free.



Video Credit: Johns Hopkins&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Interactive map of the universe includes 200,000 galaxies

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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 



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Lesotho: Africa's "Kingdom in the Sky"

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Dublin, the capital and largest city of Ireland. Beyond its pub culture, Dublin is known as a modern culinary destination and a UNESCO City of Literature.



"Dublin is located near the midpoint of Ireland’s east coast in the province of Leinster. The city, which covers an area of around 115 square kilometers, is bordered by the Dublin Mountains, a low mountain range to the south, and is surrounded by flat farmland to the north and west," says ESA.



"The city straddles the River Liffey, which rises in the Wicklow Mountains and flows around 80 kilometers eastwards through the city of Dublin, in which it is canalised and bordered with quays. It then empties into Dublin Bay, an arm of the Irish Sea."



Dublin has an abundance of green spaces, including one of the largest enclosed public parks in any European capital city. Phoenix Park, which was originally formed as a royal hunting park in the 1660s, includes 707 hectares of green space.



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

The city of Dublin on Ireland's east coast

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the province of Zaragoza in northeast Spain. The image was captured by the Copernicus Sentinel-2 mission.



"Together with the provinces of Huesca and Teruel, Zaragoza formed the old kingdom of Aragon. Its capital, also called Zaragoza (not visible in this image) is home to around half of Aragon’s population," says ESA.



"The Ebro River can be seen winding its way through the province from west to east in this image. Between its source in the Cantabrian Mountains in the northwest and its delta on the Mediterranean coast, the Ebro River is fed by more than 200 tributaries as it flows 910 km across much of northern Spain."



Since rainfall is very scarce in this region, irrigation in the Ebro basin is critically important. In the valleys surrounding the Ebro River, many fields are used for growing crops such as corn, wheat, and barley.



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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The province of Zaragoza in northeast Spain

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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The rapid retreat of the Columbia Glacier

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the Pyrenees Mountains, which form a natural boundary between France and Spain in southwest Europe.



The mountain range is 430 kilometers in length. It stretches from the Mediterranean Sea on the east to the Atlantic Ocean on the west.



At an elevation of 3404 meters, Pico de Aneto is the highest mountain peak in the Pyrenees, and the third-highest peak in Spain. Pico de Aneto is located in the Posets-Maladeta Natural Park, which spans more than 82,000 acres.&nbsp;



"Geological studies have revealed that the Pyrenees Mountains have been around for longer than the Alps, with their sediments first deposited in coastal basins during the Paleozoic and Mesozoic eras," reports ESA.



"The entire mountain range formed due to the upwelling of large sedimentary rocks by the collision of the Iberian and the Eurasian plate around 100 to 150 million years ago, followed by intense erosion from ice and water."



The western Pyrenees receive more precipitation due to moisture blowing in from the Atlantic Ocean. The mountain range contains many lakes, several small glaciers, and some of the highest waterfalls in Europe.



Video &amp; Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

The Pyrenees Mountains in southwest Europe

[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"] Today’s Video of the Day from the...

Earth,Like,Exoplanet,3d,Render

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes two exoplanets that are orbiting a star 218 light-years away. A team of researchers led by the University of Montreal has found evidence that these planets are "water worlds."



The experts used data from NASA’s Hubble and Spitzer Space Telescopes. They discovered that exoplanets Kepler-138 c and Kepler-138 could be composed largely of water.



"We previously thought that planets that were a bit larger than Earth were big balls of metal and rock, like scaled-up versions of Earth, and that's why we called them super-Earths," explained study co-author Björn Benneke.&nbsp;



"However, we have now shown that these two planets, Kepler-138 c and d, are quite different in nature and that a big fraction of their entire volume is likely composed of water. It is the best evidence yet for water worlds, a type of planet that was theorized by astronomers to exist for a long time."



Video Credit: NASA Goddard



Image Credit: NASA, ESA, and Leah Hustak (STScI)



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Two distant planets may be "water worlds"

[sendtonews key="QIoVYJqRBi-2434608-12187" type="single"] Today's Video of the Day from NASA...

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Satellites reveal how Earth's systems are interconnected Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes Earth’s interconnected systems, and how this network is affected by rising temperatures.&nbsp;



During 2020, average global temperatures matched the hottest year on record. The hurricane season was also record-breaking, with many of the storms intensifying at extraordinary speeds. Hot water in the ocean is fuel for hurricanes. The satellite data shows that it's all one interconnected system showing how Satellites reveal how Earth's systems are interconnected.



According to NASA, dust swept up from Northern Africa plays a major role in the formation of hurricanes, and is also a key source of fertilization in the Amazon rainforest. As a result of<a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/"> climate</a> change, dust plumes are expected to decline, which will have an effect on vegetation far away.&nbsp;



Images from Earth-observing satellites show how the world’s plant life is affected by natural disasters, fires, and deforestation. Satellites also reveal how widespread changes in vegetation impact waterways,&nbsp; the climate, air quality. Satellites communicate by using radio waves to send signals to the antennas on the Earth. "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. 



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Satellites reveal how Earth's systems are interconnected

[sendtonews key="JbW4VsY53O-1632195-12187" type="single"] Satellites reveal how Earth's systems are interconnected...

Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes a new map of Mars that is providing insight into the planet’s watery past. The map also reveals where future missions could safely land on Mars.&nbsp;



The map has been created over the last decade using observations of water-rich rocks and mineral deposits. The images were captured by ESA’s Mars Express and NASA’s Mars Reconnaissance Orbiter.



"A big surprise is the prevalence of these minerals, with the map revealing hundreds of thousands of water-affected locations in the oldest parts of the planet," says ESA. "The new data will help answer exciting questions about Mars’ climate history, whether water was globally persistent or confined to short, intense episodes, and whether the conditions were ever suitable for life."



"Specifically, the map shows the locations and abundances of aqueous minerals. These are from rocks that have been chemically altered by the action of water in the past, and have typically been transformed into clays and salts."



According to John Carter of the Institut d’Astrophysique Spatiale (IAS), our collective understanding of Mars has been oversimplified. He explained that planetary scientists have tended to think that only a few types of clay minerals on Mars were created during its wet period, then as the water gradually dried up, salts were produced across the planet.



The new map shows that the composition of Mars is much more complicated than what we thought. For example, while many salts formed after Martian clays, there are some salts that are presumed to be older than some of the clays.&nbsp;



“The evolution from lots of water to no water is not as clear cut as we thought, the water didn’t just stop overnight. We see a huge diversity of geological contexts, so that no one process or simple timeline can explain the evolution of the mineralogy of Mars. That’s the first result of our study. The second is that if you exclude life processes on Earth, Mars exhibits a diversity of mineralogy in geological settings just as Earth does,” said Carter.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

The history of Mars is much more complex than we thought

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Today's Video of the Day from the <a href="https://www.stowers.org/">Stowers Institute for Medical Research</a> describes how cavefish adapted to a sedentary lifestyle over tens of thousands of years. 



The experts found that the muscle metabolism of cavefish has been genetically reprogrammed over time. As a result, the animals have experienced major changes in their morphology and behavior. Despite these changes, however, the cavefish remain healthy and fit.



The research may provide new clues about the evolutionary consequences of prolonged physical inactivity in humans.&nbsp;



“It’s no surprise that people are moving less and less as technology has advanced,” said Rohner. “With cavefish, we have a unique system where we can study what might happen if people remained couch potatoes over very, very long periods of time.”



Video Credit: Stowers Institute for Medical Research



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Cavefish are healthy despite their sedentary lifestyle

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> some of the most incredible waves in the world, as seen by Landsat satellites.



"With more than 370,000 miles of coastline on Earth, there are plenty of places where epic waves build up, curl over, and hurtle toward the shore.- much to the thrill of surfers," says NASA. "There are some places where these waves are so magnificent that they can be seen from space."



"With the broad perspective of satellites, we can see how these iconic waves develop into the world’s tallest, longest, fastest, and heaviest."



Video Credit: NASA Earth Observatory&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Satellites capture the world's biggest and fastest waves

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