Leopards are known for their elusive nature, but now their roars are revealing secrets that could transform wildlife conservation. 



Every voice in nature is distinctive, and this individuality extends beyond humans to one of Earth’s most majestic predators. 



<h2 class="wp-block-heading" id="h-leopard-vocal-signatures">Leopard vocal signatures </h2>



Deep in the heart of Nyerere National Park in Tanzania, a breakthrough study has uncovered the unique vocal signatures of leopards, offering new possibilities for understanding and protecting these enigmatic <a href="https://www.earth.com/news/snow-leopard-day-2024-honoring-the-elusive-mountain-ghost/" target="_blank" rel="noreferrer noopener">big cats</a>.



Over an expansive 450 square kilometers, a collaborative team of scientists combined their expertise to decode the signatures hidden within a leopard’s roar.



The team included researchers from the <a href="https://www.exeter.ac.uk/" target="_blank" rel="noreferrer noopener">University of Exeter</a>, the Wildlife Conservation Unit at the University of Oxford, Lion Landscapes, the Frankfurt Zoological Society, and key Tanzanian organizations.



Supported by computer scientists, the study reveals an innovative approach to studying leopards, which could have profound implications for their <a href="https://www.earth.com/news/un-report-calls-for-global-change-to-stop-biodiversity-loss/" target="_blank" rel="noreferrer noopener">conservation</a>.



<h2 class="wp-block-heading" id="h-leopards-have-distinct-roars">Leopards have distinct roars</h2>



By combining large-scale camera trapping with autonomous audio recording, the researchers made a remarkable discovery: each leopard has a distinct roar. 



This unique vocal signature allowed the experts to identify individual leopards with an impressive 93% accuracy. This innovative approach addresses the significant challenges that scientists face in monitoring these elusive predators in the wild.



Leopards are solitary, nocturnal beings that cover vast terrains, leaving behind little reliable <a href="https://www.earth.com/news/assessments-of-large-african-carnivores-urgently-needed/" target="_blank" rel="noreferrer noopener">data</a> for researchers. There is a desperate need for such information to help prevent their alarming decline, which is mainly due to habitat loss and human-wildlife conflicts.



<h2 class="wp-block-heading" id="h-science-that-could-save-leopards">Science that could save leopards</h2>



There is also a lack of scientific research on the distinct "sawing roar" of a leopard. This roar, a repeated pattern of low-frequency strokes audible even from a kilometer away, is primarily used for attracting mates and territorial defense.



The research team discovered that these unique roars could be the focus of more extensive studies such as population estimates.



Such data can greatly aid policymakers and conservationists in managing landscapes and reducing human-wildlife conflicts.



<h2 class="wp-block-heading" id="h-understanding-ecosystems-in-a-new-way">Understanding ecosystems in a new way</h2>



According to study lead author Jonathan Growcott, a PhD student at the University of Exeter, the discovery of unique vocal signatures demonstrates our limited knowledge about leopards and <a href="https://www.earth.com/news/large-carnivores-need-protection-to-avoid-extinction/" target="_blank" rel="noreferrer noopener">large carnivores</a>.



"We hope it will allow leopards to become the focus of more acoustically complex science such as population density studies and open the door to more work on how large carnivores use vocalizations as a tool," said Growcott.



The research also demonstrates how the integration of different technologies can enrich data collection and scientific understanding of ecosystems.



"Importantly, our success in using a combination of different types of technology could hopefully lead others to think about how to integrate different types of technology into their research, as the rich data this provides could really push science ahead and help us understand ecosystems and landscapes in a much more holistic way.” noted Growcott.



The research was praised by Hazel Norman, CEO of the British Ecological Society. She described it as a brilliant demonstration of how ecologists apply novel ideas and technologies to gain new insights into our natural world.



Our journey of understanding leopards through their roars begins now, and it will open new doors to the conservation of these majestic creatures.



<h2 class="wp-block-heading" id="h-leveraging-technology-for-conservation">Leveraging technology for conservation</h2>



The success of this study highlights the transformative power of integrating advanced technology into <a href="https://www.earth.com/news/world-wildlife-conservation-day-2024-saving-species-from-extinction/" target="_blank" rel="noreferrer noopener">wildlife</a> research. 



By combining large-scale camera trapping with autonomous acoustic recording, the researchers overcame the challenges posed by leopards' solitary and nocturnal habits.



This innovative approach not only identified individual leopards but also opened doors for future applications, such as tracking population changes and monitoring habitat use over time.



As human-wildlife conflicts and habitat loss threaten leopard populations, such tools can serve as critical resources for policymakers and conservationists. 



These technologies enable data collection in previously inaccessible areas, ensuring that elusive species like leopards can be studied and protected effectively.



The potential to scale this methodology across other regions and species further highlights its significance in global wildlife conservation efforts.



-----



Like what you read? <a href="https://www.earth.com/subscribe/" target="_blank" rel="noreferrer noopener">Subscribe to our newsletter</a> for engaging articles, exclusive content, and the latest updates.&nbsp;



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



-----

Leopards reveal their identity through a distinct roar

Leopards are known for their elusive nature, but now their roars are revealing secrets that could transform wildlife conservation. Every voice in nature is distinctive, and this individuality extends beyond humans to one of Earth’s most majestic predators. Leopard vocal signatures Deep in the heart of Nyerere National Park in Tanzania, a breakthrough study has uncovered the unique vocal signatures of leopards, offering new possibilities for understanding and protecting these enigmatic big cats. Over an expansive 450 square kilometers, a collaborative team of scientists combined their expertise...

Tuataras are strange reptiles found living only in New Zealand. A few key traits like teeth fused to jaws and an odd chewing motion point to their divergence from lizards some 230 million years ago. Instead of lizards, tuataras are rhynchocephalians. Now, scientists from the <a href="https://www.si.edu/">Smithsonian</a> have found the fossil remains of another member of rhynchocephalia.&nbsp;



The newly discovered animal was described in the <a href="http://dx.doi.org/10.1080/14772019.2022.2093139">Journal of Systematic Palaeontology</a>. The reptile, named Opisthiamimus gregori, lived in Jurassic North America alongside such superstars as Stegosaurus and Allosaurus. The animal in question was much smaller, only about 6 inches long, but representative of a massive evolutionary epic.



“What’s important about the tuatara is that it represents this enormous evolutionary story that we are lucky enough to catch in what is likely its closing act,” said Matthew Carrano, the National Museum of Natural History curator of Dinosauria. “Even though it looks like a relatively simple lizard, it embodies an entire evolutionary epic going back more than 200 million years.”



The discovery comes from several specimens, including a complete one, discovered in a Morrison formation quarry in Wyoming focusing on an Allosaurus nest. During the late Jurassic, rhynocephalians were common.&nbsp;



At the peak of their existence, rhynocephalians were found all over the world and made a diverse group from herbivores to dedicated fishers. As lizards and snakes grew in diversity, for unclear reasons, rhynocephalians dwindled. Today, the tuatara is the only living representative.&nbsp;



“These animals may have disappeared partly because of competition from lizards but perhaps also due to global shifts in climate and changing habitats,” said Carrano. “It’s fascinating when you have the dominance of one group giving way to another group over evolutionary time, and we still need more evidence to explain exactly what happened, but fossils like this one are how we will put it together.”



---



By <a href="mailto:zachfitzner@yahoo.com">Zach Fitzner</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

New Mesozoic reptile was an ancient relative of the tuatara

Tuataras are strange reptiles found living only in New Zealand....

The development and composition of the gut microbiome in humans are known to be important in shaping host physiology, immunity and long-term health outcomes. However, our understanding of this dynamic process in wild <a href="https://www.earth.com/news/small-mammals-of-the-anthropocene-are-deeply-altered/">mammals</a> is poor. Mothers are important initially, as bacteria are transmitted to the young offspring through milk and suckling, determining the composition of the bacterial populations colonizing the gut. But as the offspring transition to an adult diet, the gut bacteria gradually change in ways not yet understood.&nbsp;



A new study has investigated developmental changes in the gut microbiomes of wild geladas (Theropithecus gelada), Old World monkeys that live in the highlands of Ethiopia and consume a diet consisting almost entirely of grass. The study provides the first evidence of clear and significant maternal effects on the gut microbiome both before and after weaning in a wild mammal. The findings are published in the journal <a href="http://dx.doi.org/10.1016/j.cub.2022.08.037">Current Biology</a>.



The research team, co-led by Stony Brook University anthropologist&nbsp;Dr. Amy Lu, and biologists&nbsp;Dr. Alice Baniel&nbsp;and&nbsp;Dr. Noah Snyder-Mackler&nbsp;at <a href="https://www.asu.edu/">Arizona State University</a>, made use of one of the largest datasets on gut microbiome&nbsp;development in any wild mammal. The experts used high throughput DNA sequencing to identify and characterize the bacteria present in the guts of young geladas in their first three years of life, and assessed the role of maternal effects in shaping the young’s gut microbiome.



The analysis revealed a total of 3,784 different genetic strains of bacteria, belonging to 19 distinct phyla and 76 families, that resided in the gut microbiomes of the geladas. Overall, they found that&nbsp;postnatal microbial colonization in geladas was remarkably similar to that seen in humans, with microbial diversity increasing rapidly after birth and being followed by gradual changes in composition until the time of weaning.&nbsp;



Young infants that were still feeding predominantly off milk had microbiomes that reflected this diet – for instance, there were bacteria present that could digest milk glycans, molecules that cannot be broken down without the action of bacteria. In contrast, older geladas that included more plant matter in their diet had fewer milk-oriented gut microbes and more microbes necessary for the digestion of grass.



Although the main driver of gut microbe composition was the change in diet from milk dominated to grass dominated food, maternal input was also a key factor. The researchers found that the infants of experienced mothers (who had raised infants previously) showed faster maturation of the microbial biome in the gut. This reflected a faster developmental pace overall for infants born to these mothers.&nbsp;



“Infants of first-time moms showed slower development of their gut microbiota, meaning that their guts were specialized toward milk digestion for longer, compared to kids from other moms. This may put offspring of newer moms at a slight developmental disadvantage,” said Baniel. “In addition, even after infants were weaned, their microbiome community was more similar to mom’s than to other adult females in the population, suggesting that moms may be sharing microbes with their offspring.”



“Early life gut microbial development is known to have a large impact on later life health in humans and other model organisms," said Lu. "Now we have solid evidence that mothers can influence this process, both before and after weaning. Although we’re not 100 percent certain how mothers do this, one possible explanation is that they transfer specific bacteria to their offspring.”



According to Snyder-Mackler, these early life changes might have far-reaching consequences which impact the health and survival of these offspring once they become adults.



Future work from this research team is therefore going to examine how differences in the gut microbiome during infancy influence other aspects of development, such as growth, the maturation of the immune system, and the pace of reproductive maturation. Luckily, because they are continuing to study the same infants as they age, the researchers will eventually be able to link the infant gut microbiome and the early-life maternal effects to health, reproduction, and survival in adulthood.&nbsp;



---



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

Primate moms influence their child’s microbiome, even after weaning

The development and composition of the gut microbiome in humans...

Flying,Bat,Hunting,In,Forest.,The,Grey,Long-eared,Bat,(plecotus

A new study led by the <a href="https://illinois.edu/">University of Illinois</a> and <a href="https://www.brown.edu/">Brown University</a> has investigated the diets of endangered Indiana bats and threatened northern long-eared bats, in order to identify ways to effectively manage both species and their <a href="https://www.earth.com/news/red-pandas-face-shrinking-habitats-and-tough-decisions/">habitats</a>.



“This was an in-depth study of these two imperiled species in landscapes where they co-occur. Nobody’s done that before. This investigation gives us a much better sense of how bats not only coexist, but also how they benefit our forests and how we can thus manage the forest to provide bats with better habitat,” said study senior author Joy O’Keefe, a wildlife extension specialist at the University of Illinois.



“When you have two closely related species sharing the same habitat, that means they’re probably built similarly and need similar places to live and things to eat. This brings up a lot of questions about how they’re doing that. Are they competing? Or is there some system in place where they're able to divide resources? Our job was to figure that out,” added study lead author Timothy Divoll, a data scientist at Brown University who completed his doctoral studies under Professor O’Keefe’s supervision.



During four summers, the researchers captured bats of both species and collected fecal samples at two locations in Indiana – a large managed forest and a region with small forest patches close to a major airport – in order to identify insect prey from DNA found in bats’ feces.



The analysis revealed that the two bat species consumed many of the same insects – such as moths, beetles, mosquitoes, crickets, or wasps – as well as a number of agricultural and forest pest species, which proves their crucial role as providers of beneficial ecosystem services.&nbsp;



Surprisingly though, the northern long-eared bats (the smaller of the two species) usually pick up slightly larger prey items, most likely because they are gleaners – meaning they grab prey off surfaces – which would make it easier for them to locate larger insects on leaves or bark. By contrast, the Indiana bats are aerial hawkers, detecting and hunting prey that moves through the air, be it large or small. Although this difference in prey size preference and feeding style could explain how the two species avoid direct competition, the scientists are not yet sure whether this is the case.



“It’s difficult to say whether they’re in direct competition without measuring the availability of different insect types, and we didn’t measure that in our study. But our&nbsp;earlier research in the same forested site&nbsp;showed northern long-eared bats use much less space when foraging than Indiana bats. And they’re selecting habitat slightly differently. At the end of the night, they might end up eating all the same things, but they’re finding them differently,” Dr. Divoll explained.



Ultimately, the bats’ diets were so similar that there were greater differences between the sites investigated – large forest vs. small, near-airport forest patches – than between bat species. “This tells us that, at some level, they are generalizing on whatever is available at a given site. They might be flexible and specialize at certain times, but these two bats are going to go after whatever is predominantly there. They may use different hunting techniques and search different heights of the forest, but they both likely capture easy targets while searching for preferred prey,” Dr. Divoll concluded.



The study is published in the journal <a href="http://dx.doi.org/10.1002/edn3.354">Environmental DNA</a>.



---



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

Bats’ diets offer clues on how to protect them

A new study led by the University of Illinois and...

Insects that are adapted to wet, tropical regions will be impacted by the drier conditions associated with <a href="https://www.earth.com/news/climate-change-limits-the-forest-canopys-cooling-response/">climate change</a>. A paper recently published in <a href="http://dx.doi.org/10.1111/gcb16379">Global Change Biology</a> reveals that tropical insects will also be affected by relatively heavy rainfall.&nbsp;



Researchers in Peru conducted a five-year study on the effects of short-term droughts followed by increased precipitation and found a 50 percent decline in the biomass of arthropods (spiders and insects). These findings suggest that arthropods are more sensitive to climate change than previously thought.&nbsp;



"Most of the time when we think about climate change, we think about warming temperatures, but rainfall patterns will change as well, which is something insects seem to be especially sensitive to," said Felicity Newell, a postdoctoral associate at the <a href="https://www.floridamuseum.ufl.edu/">Florida Museum of Natural History</a>. "We're seeing that rainfall extremes can have negative effects over very short timescales."



This phenomenon of just the right amount of water is an example of Goldilocks preference. Insects, in particular, are already suffering assaults on many fronts, and now we know climate change is another serious threat to their populations. This data is especially alarming because over half of the world's insect diversity occurs in the tropics.&nbsp;



For part of the study, Newell and co-author Ian Ausprey compared rainfall and temperature measurements to the number of insects they collected in the Andes mountains of northern Peru for two-and-a-half years. While they expected that plant growth would determine insect abundance, they found that rainfall had the biggest influence.&nbsp;



"Arthropod biomass decreased after three months of dry weather, but it also decreased after three months of exceptionally wet conditions," Newell explained. "Biomass peaked at intermediate rainfall, creating a dynamic balance between too wet and too dry."&nbsp;



Although the researchers determined that tropical insects, especially smaller ones, were vulnerable to dry conditions in an experimental study, they could not determine why they also reacted negatively to very wet environments.&nbsp;



Moreover, the predictive model they developed places insects as canaries in the coal mine since it predicts that insects will be the first type of animals to react to a climate in peril. Whatever the case, insects are indispensable. Many ecosystems depend on them as engineers, pollinators, and food sources.&nbsp;



"Insects are incredibly diverse and important," said Newell. "They fill the ecosystem roles of pollination and decomposition, and they serve as a food resource for many birds and mammals."&nbsp;



---



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

Tropical insects are more sensitive to climate change than expected

Insects that are adapted to wet, tropical regions will be...

Nest parasites, such as cuckoos, are notorious for being the ultimate free-loaders in <a href="https://www.earth.com/news/nurturing-benefits-of-nature-are-crucial-for-human-well-being/">nature</a>. Females lay their eggs in the nests of other bird species and then leave the unsuspecting host parents to raise a chick that is not their own. Different species of cuckoos have chicks that behave differently once hatching has occurred. Some cuckoo chicks kick out the host nestlings and become the sole survivor in the nest. Others share the nest and food with the host nestlings, and yet others may actually enhance the survival of host chicks by exuding a bad smell that deters predators.&nbsp;



Brown-headed cowbirds (Molothrus ater) are also obligate brood parasites but differ from cuckoos in that they are generalists, laying their eggs in the nests of any other bird they can find. In fact, observers have recorded brown-headed cowbird eggs being laid in the nests of more than 200 different species. Not all the chicks are able to survive – it seems that cowbirds sometimes pick hosts that feed their chicks a different diet (i.e. seeds) to what a growing cowbird needs (insects). Cuckoos tend to be specialists, laying their eggs in the nests of specific host species that will be equipped to raise the cuckoo chick.



In a recent study, experts investigated the behavior of cowbird chicks in the nests of prothonotary warblers (Protonotaria citreas). The researchers aimed to understand the strategies used by cowbird chicks to survive in prothonotary warbler nests when the total number of warbler chicks differs. Cowbird chicks may hatch in a nest with as many as six other nestlings, or sometimes as few as zero, and the researchers wondered how cowbird chick behavior would differ under these conditions.&nbsp;



“Brood parasites like brown-headed cowbirds lay their eggs in the nests of so many different species, we wanted to know about one really important aspect of how they make a go of it in a world that, when they hatch, could be any one of 200 different scenarios,” said&nbsp;<a href="https://nickantonson.weebly.com/">Nicholas Antonson</a>, a Ph.D. candidate at the <a href="https://illinois.edu/">University of Illinois Urbana-Champaign</a> who led the study with&nbsp;<a href="https://sib.illinois.edu/profile/mhauber">Mark Hauber</a>, a U. of I. professor of&nbsp;<a href="https://sib.illinois.edu/eeb/">evolution, ecology and behavior</a>. “We focused on what happens when a cowbird hatches into a nest with different numbers of host nestlings.”



To study cowbird chick success, the researchers deployed nest boxes that were attractive to warblers and cowbirds in a southern Illinois swamp forest. The boxes were designed to exclude ground predators like snakes and raccoons, and aerial predation by hawks and owls. By changing out the bedding in the boxes four days after the eggs hatched, the team also reduced the threat from invertebrate parasites like blowflies.



The team followed nests with and without cowbird parasites and manipulated the number of host chicks in the nests by moving warbler eggs or chicks between nests. All the nests parasitized by cowbirds had either zero, two or four warbler nest mates. Control nests containing only warbler chicks were matched for the total number of young.



The results of the study, published in the <a href="https://royalsocietypublishing.org/journal/rspb">Proceedings of the Royal Society B Biological Sciences</a>, showed that cowbird chicks survive best when they are in a nest with two other nestlings. Their survival is not as good when four host chicks are present, and is also reduced when no other nestlings are present. In general, cowbirds hatch earlier than their nest mates, they tend to be bigger and more aggressive than warbler chicks, and they extract more than their fair share of food from the host parents, Antonson said. Cowbirds need more food because they grow two-to-three times larger in the nest than the warbler chicks.



Interestingly, the researchers noted that when cowbird chicks hatched in nests with four warbler chicks present, the cowbirds seemed to cause the number of host chicks to decrease down to two. The cowbirds did not do this by ejecting or killing warbler chicks, however, as is commonly seen with cuckoos.



“Cowbirds have adapted to live with host nest mates,” Hauber said. “They outcompete them, they raise their heads higher, and they beg more loudly and for longer periods of time, but they do not actively displace the host nest mates.”



“One of the unique aspects of our study is that we also quantified how many cowbirds survived to fledging in each of these different scenarios,” Antonson said. “We found that cowbirds survive best in the nests where they hatch with two host nestlings. That’s better than when they hatch with four host nestlings or with zero host nestlings. Cowbirds raised with more than that optimal number of two host nestlings appear to reduce the host brood sizes down to two.”



This reduction in host nestling numbers when cowbirds are present didn’t occur in the control warbler nests that had no cowbirds, the researchers found.



“We think that the cowbirds are manipulating the host numbers to reduce them to the optimal so that they can grow best,” Hauber said. Stealing food meant for the other nestlings is the likely means by which they do that. Further studies will be needed to confirm that hypothesis.



---



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

Cowbird chicks need nest mates, but two is better than four

Nest parasites, such as cuckoos, are notorious for being the...

Portrait,Closeup,Of,A,Cute,Furry,Rock,Hyrax,(procavia,Capensis)

In a recent study published by the <a href="https://www.britishecologicalsociety.org/">British Ecological Society</a>, researchers have found a strong correlation between the song rhythm of male rock hyraxes and <a href="https://www.earth.com/news/reproductive-health-is-impacted-by-geographic-location/">reproductive</a> success. More specifically, females are looking for a hyrax with rhythm. Females may interpret male rhythmic serenades as a sign of good health.&nbsp;



"We have been studying hyraxes for the past 20 years and have previously found several patterns in their songs that are common features of human language and music," said Dr. Vlad Demartsev, who collected data for the study.



"Their songs have regional dialects so individuals living in proximity sing more similarly to each other. They tend to sing in crescendo (getting louder as the song progresses) and reach peak complexity towards the end of their songs, maybe to keep the audience engaged and listening to the signals."



Dr. Demartsev further explained the importance of rhythm: "One assumption is that rhythm has evolved so that animals that call in groups can better synchronize their songs - like musicians in a band or singers in a choir."



In this case, however, there is a catch; the hyraxes do not sing in a group, but call individually. Yet, those males with rhythm still display greater fitness.&nbsp;



"Male hyraxes that sing more frequently tend to have more surviving offspring," said study co-founder Dr. Lee Koren. "Song rhythms and stability are related to reproductive success and thus potentially hold information about individual quality."



The researchers believe that the ability to create specific, rhythmic songs may signal that the male is free from disease, which could mean an ideal mate and more successful fitness.



Dr. Demartsev would like to see further research conducted on this topic in the future. "It would be fascinating to compare animal species who sing individually and species that sing in groups."



The study is published in the <a href="https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2656.13801">Journal of Animal Ecology</a>.&nbsp;



---



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

Rhythm linked to reproductive success in male rock hyraxes

In a recent study published by the British Ecological Society,...

<a href="https://www.earth.com/news/sharks-important-deserve-protections/">Sharks</a> are apex predators that provide a variety of vital functions for maintaining balanced ecosystems. They shape fish communities, ensure species diversity, and even contribute to carbon sequestration by maintaining seagrass meadows. However, they are highly susceptible to anthropogenic threats, such as fishing, particularly in tropical and coastal areas where large communities depend upon fish as their main source of nourishment.&nbsp;



To date, shark, ray, and chimaera species have not been sufficiently considered in the planning and designing of marine protected areas. Now, a team of researchers from the <a href="https://www.iucn.org/">International Union for the Conservation of Nature</a> (IUCN) has developed a new framework to change how these species are considered in the design of protected areas and thus safeguard them against extinction.&nbsp;



“We still have so much to learn about many shark, ray, and chimaera species, but unfortunately several studies indicate that many protected areas are failing to adequately meet their needs. However, Important Shark and Ray Areas (ISRAs) will help to identify areas for these species using criteria which have been specifically designed to consider their biological and ecological needs,” said study lead author Ciaran Hyde, a consultant to the IUCN Ocean Team.



“Sharks are a long-lived species: many take a long time to reach sexual maturity and then only give birth to a few young. This makes them particularly susceptible to fishing pressure and with an estimated 37 percent of species with an elevated risk of extinction, they are facing a biodiversity crisis. Results from the ISRA project will inform policy and ensure that areas critical to the survival of sharks, rays, and chimaeras are considered in spatial planning,” added study senior author Rima Jabado, the chair of the IUCN SSC Shark Specialist Group.



The new ISRA criteria were developed through a collaborative effort among shark experts, conservation agencies, and governmental bodies, and include four criteria and seven sub-criteria which take into account the complex biological and ecological needs of sharks, the specific habitats supporting their vital functions and life-history characteristics (such as movement, resting, feeding, reproduction), their distinctive attributes, and the diversity of species within various regions.



“All efforts are being made to ensure that the ISRAs contain the best and most up-to-date place-based information that science can offer to decision makers, managers, and marine users. As the ISRA program proceeds by covering progressively the whole extent of the ocean (and relevant inland water) surface, a very broad involvement of the shark expert community world-wide is expected,” concluded co-author Giuseppe Notarbartolo di Sciara, the co-chair of the IUCN Marine Mammal Protected Areas Taskforce and Deputy Chair of the IUCN SSC Cetacean Specialist Group.



The study is published in the journal <a href="http://dx.doi.org/10.3389/fmars.2022.968853">Frontiers in Marine Science</a>.



---



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

New framework to protect sharks developed by IUCN

Sharks are apex predators that provide a variety of vital...

Urban living sulfur-crested cockatoos in some Australian cities have learned how to open the garbage disposal bins and access delicious food in the form of bread and other throwaway titbits. This has had residents up in arms as they try to control the birds’ access to the rubbish using innovative bin lid modifications. You see, although the cockatoos are pretty ingenious at opening the bins, they never close them again and this means garbage gets spread all over the street, leading to conflict between the <a href="https://www.earth.com/news/female-hummingbirds-mimic-males-to-avoid-violence/">birds</a> and the local residents.



Previously, researchers have documented the ingenious bin-opening behavior of sulfur-crested cockatoos in suburban Sydney, and have found that this behavior is learned and transmitted culturally between sub-populations. Now, in a follow-up study, published in the journal <a href="http://dx.doi.org/10.1016/j.cub.2022.08.008">Current Biology</a>, they note the techniques used by people to confound the cockatoos, and describe how these birds are learning all the tricks and overcoming the obstacles.&nbsp;



“When I first saw a video of the cockatoos opening the bins I thought it was such an interesting and unique behavior and I knew we needed to look into it,” said study lead author Barbara Klump, a behavioral ecologist at the Max Planck Institute of Animal Behavior. She explained that the cockatoos’ motivation is waste food. “They really like bread. Once one gets a bin open all the cockatoos in the vicinity will come and try to get something nice to eat.”



The birds typically pry the bins open with their beaks and then maneuver themselves along a small rim while retaining a grip of the lid in their beak. When they reach the back (hinge side) of the bin, they simply flip the lid open. It’s a community affair. “We could actually show that this is a cultural trait,” said Klump. “The cockatoos learn the behavior from observing other cockatoos and within each group they sort of have their own special technique, so across a wide geographic range the techniques are more dissimilar.”



Local residents have responded to the problem by trying to secure the lids using bricks, rocks and other contraptions to keep the birds out of the bins. The bin lids still need to open when the bins are tipped upside down and emptied by an automated arm on the garbage truck. This has led the humans to develop some fairly innovative solutions to restrict access by the parrots. A survey conducted by the researchers found that some people strap full water bottles to the lid, rig ropes to prevent the lid from flipping open, or use sticks or bottles to block the hinges. “There are even commercially available cockatoo locks for bins,” said Klump.&nbsp;



The researchers identified 5 different categories of bin alteration that had been adopted by residents in order to deter or thwart the efforts of the birds. Level 1 represented no alteration whatsoever, while level 2 involved no functional alteration (e.g., a rubber snake). Level 3 alterations included unfixed objects, such as rocks and bricks designed to prevent lifting, while level 4 included the use of objects to prevent flipping of the lid (e.g., bottles, sticks or shoes jammed in the hinges). Level 5 represented the greatest investment on the part of the human, for example an attached weight suspended on a rope.&nbsp;



The researchers found that while level 2 and 3 protection devices could be opened by the cockatoos, level 4 and 5 devices had not yet been conquered by the birds. Interestingly, they noted that the protection method used by humans was not randomly distributed around the suburbs; instead, protection methods appeared to be clustered within streets, implying that the residents in a street are learning from and copying each other.&nbsp;



Residents also reported that they switched techniques on a regular basis, just as soon as the cockatoos had worked out how to deal with a particular bin modification. This is akin to an innovation arms race because each time the cockatoos learn their way around a bin modification, the humans come up with a new technique and share it with others.



“It's not just a social learning on the cockatoo side, but it's also social learning on the human side,” said Klump. “People come up with new protection methods on their own, but a lot of people actually learn it from their neighbors or people on their street, so they get their inspiration from someone else.”



Klump won’t say whom she expects to win the race for control of the bins, but she and her colleagues plan to look at how the cockatoos’ behavior varies from season to season.



Klump expects we will see more of these kinds of human-wildlife interactions in the future. “As cities expand, we will have more interactions with wildlife. I'm hoping that there will be a better understanding and more tolerance for the animals that we share our lives with.”



---



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

Conflict between cockatoos and humans leads to arms race

Urban living sulfur-crested cockatoos in some Australian cities have learned...

Beautiful,Mandrill,Portrait,Closeup,,Baboon,Monkey,With,Colorful,Face,And

Human-animal interactions and the impact on animals of the presence of zoo visitors are crucial for zoo <a href="https://www.earth.com/news/animal-welfare-is-essential-to-sustainable-development/">animal welfare</a>, with many studies providing evidence that different species or even individual animals respond differently to different humans. Now, a multi-institutional team of experts in animal behaviors has investigated how the closure of the zoos at the beginning of the Covid-19 pandemic changed the behavioral patterns of bonobos, chimpanzees, western lowland gorillas, and olive baboons at Twycross Zoo and the Knowsley Safari. 



The analysis revealed that, during the first lockdown, primates spent more time alone and resting, engaged in more sexual and dominance behaviors, and ate less.



“Primates are some of the most cognitively advanced species in zoos and their interactions with visitors are complex,” said study senior author Samantha Ward, a zoo animal welfare scientist at <a href="https://www.ntu.ac.uk/">Nottingham Trent University</a>. “A limitation to understanding how visitors can affect behavior of animals in zoos and parks is that they rarely close to the public for prolonged periods, so this provided us with a unique opportunity.”



As visitors started returning to the zoos after the pandemic restrictions were lifted, the scientists found that bonobos and gorillas spent less time alone and resting, chimpanzees ate more, and olive baboons engaged less in sexual and dominance behaviors, while approaching visitors’ cars more frequently than they had the ranger’s vehicle when the park was closed.&nbsp;



While it is difficult to accurately assess which animal experiences were positive, negative, or neutral for specific animals, the return of visitors appeared to stimulate the chimpanzees and the baboons, while bonobos and gorillas also started to spend less solitary time – features which could be seen as positive. However, the reduction in resting behavior in more sedentary gorillas – which began altering their enclosures most likely to reduce potential overstimulation - could also suggest they were disrupted by the return of the visitors.



“Our study showed the varied ways in which visitors can influence the behavior of primates in captivity. Behavioral changes and changes in enclosure use in the presence of visitors highlights the adaptability of zoo species to their environments. Provision of environments which enable animals to actively adapt in this manner is really important for their welfare,” explained study lead author Ellen Williams, a zoo animal welfare specialist at the <a href="https://www.harper-adams.ac.uk/">Harper Adams University</a>.



“This collaborative study was really important in enabling us to understand the impacts of the closures on zoo animals. Future work could involve looking at the impact on a wider range of species in both zoos and safari parks as well as differences among individual animals,” she concluded.



The study is published in the journal <a href="https://doi.org/10.3390/ani12131622">Animals</a>.



---



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

How did pandemic lockdowns affect zoo animals?

Human-animal interactions and the impact on animals of the presence...

It's a commonly held belief that <a href="https://www.earth.com/news/forest-microclimates-impact-bird-species-diversity/">species</a> diversity benefits an entire community, and researchers at <a href="https://www.rutgers.edu/">Rutgers University</a> have completed a study that supports this idea. The research, published in&nbsp; <a href="https://www.nature.com/articles/s41559-022-01847-3">Nature Ecology &amp; Evolution</a>, shows that bee diversity is essential to ensuring crop pollination and human food supply.&nbsp;



The team observed bee communities on several farms in New Jersey, Pennsylvania, and California and discovered that multiple bee species were necessary for pollination over a flowering season. To ensure pollination over numerous seasons, even more species were required.



"This research shows that abundance (of a species) matters, but bee diversity matters even more," said Michelle Elekonich, the deputy division director of the National Science Foundation's Directorate for Biological Sciences. "It's not the same bees that are abundant at a given point in time, and variety is necessary to provide balance during a growing season – and from year to year."



"We found that two to three times as many bee species were needed to meet a target level of crop pollination over the course of a growing season compared to a single date," explained Natalie Lemanski, lead author of the study. "Similarly, twice as many species were needed to provide pollination over the course of six years compared to a single year."



The researchers observed bees and pollen quantity over several years to gather data for the study. They collected data from six blueberry farms in southern New Jersey, 25 watermelon farms in central New Jersey and eastern Pennsylvania, and 36 watermelon farms in the Northern Central Valley of California.&nbsp;



The experts note that these results indicate that species diversity is crucial for crop success, and the more bee diversity we support, the better our crops will do.



"The magnitude of increase in species needed over multiple years was remarkably consistent among crop systems when considered over the same interval of time," Lemanski concluded. "In addition, the fact that the relationship between timescale and the number of species needed did not level off suggests that even longer time series, spanning multiple seasons, may further bolster the need for biodiversity to ensure reliable ecosystem service."



---



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

Bee diversity is key to sustainable agriculture

It's a commonly held belief that species diversity benefits an...

According to a new study led by <a href="https://www.dal.ca/">Dalhousie University</a> in Canada, <a href="https://www.earth.com/news/wild-seafood-has-one-sixth-the-carbon-footprint-of-red-meat/">seafood</a> can provide better nutrition to people at a lower rate of greenhouse gas emissions than beef, pork, or chicken. These findings suggest that policies aiming to promote seafood diets as a substitute for other animal products could significantly improve food security, while also playing a key role in mitigating climate change.



By calculating the nutritional density and climate impacts of different sources of fish, the scientists found that half of the seafood species they studied have a higher nutrient density and contributed to fewer greenhouse emissions than beef, pork, or chicken. Of the most common species of fish consumed in the United Kingdom, the species with the lowest climate impact relative to their nutrition values were wild-caught salmon, herring, and mackerel, followed closely by anchovies, farmed mussels, and farmed oysters.



&nbsp;“This work makes clear that many of us can effect real climate impact reductions through the choices that we make in what animal-derived foods we include in our diet,” said study co-author Peter Tyedmens, an expert in Ecological Economics at Dalhousie University.&nbsp;



“Shifting from beef, pork and often even chicken to seafood options will almost always result in lower production-related emissions that are ultimately going to be necessary if we are to meaningfully address the climate crisis.”



These findings confirm previous hypotheses that seafood is highly nutritious – containing a variety of proteins, fatty acids, vitamins, and minerals - and its production results in relatively low impacts on the climate, especially when compared to the impacts of more widely consumed animal products, such as beef, pork, or even chicken. Thus, policies to promote seafood in diets as a substitute for other animal protein could improve future food security while also mitigating global warming.



“Based on the patterns found in nutritional attributes and climate impact, we recommend refocusing and tailoring production and consumption patterns towards species and production methods with improved nutrition and climate performance, taking into account specific nutritional needs and emission reduction goals,” the authors concluded.



The study is published in the journal <a href="https://www.nature.com/articles/s43247-022-00516-4">Communications Earth &amp; Environment</a>.



---



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

Replace meat with seafood for a healthier planet

According to a new study led by Dalhousie University in...

Domestic donkeys (Equus asinus) have been highly important to humans for millennia, providing a reliable source of animal labor and long-distance transport in many cultures. However, regardless of the key role they played in ancient pastoral societies across Africa, Europe, and Asia, as well as the functions they still serve in low- and middle-income communities (especially in semi-arid and upland environments), relatively little is known about their origin, domestication timeline, and the impact of human management on their genomes.&nbsp;



Now, a research team led by the <a href="https://www.univ-tlse3.fr/">University Paul Sabatier</a> in Toulouse, France, has performed a comprehensive genetic analysis of both modern and ancient donkeys, revealing their origins, expansion, and management practices. By evaluating 238 modern and ancient donkey genomes - 207 modern donkeys, 31 ancient donkeys, as well as 15 wild equids - the scientists found strong phylogeographic evidence supporting a single domestication event in eastern Africa over 7,000 years ago.&nbsp;



This event was followed by a series of expansions throughout Africa and into Eurasia, where several sub-populations ultimately became isolated and differentiated, most probably due to the aridification of Sahara. Eventually though, genetic variants from Europe and the Near East found their way back into western African donkey populations.&nbsp;



“We found a strong phylogeographic structure in modern donkeys that supports a single domestication in Africa ~5000 BCE, followed by further expansions in this continent and Eurasia and ultimately returning to Africa,” the study authors reported.



In addition, the analyses revealed a previously unknown genetic lineage in the Levant approximately 2,200 years ago that likely contributed to increased genetic flow toward Asian donkey populations. Finally, throughout history, donkey management involved the interbreeding and the production of large-sized bloodlines, particularly during a period when these creatures were essential to the Roman economy and military activities.



The study is published in the journal <a href="https://www.science.org/doi/10.1126/science.abo3503">Science</a>.



---



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

Donkeys were domesticated over 7,000 years ago in Africa

Domestic donkeys (Equus asinus) have been highly important to humans...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"]</div>



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



---



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

[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="G9bUoxcjr4-2511624-12187" type="single"]</div>



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;



---



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.

Flu viruses are more flexible than expected

[sendtonews key="G9bUoxcjr4-2511624-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="3upvlAaHgO-2256633-12187" type="single"]</div>



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;



---



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

[sendtonews key="3upvlAaHgO-2256633-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="LvS8v8bp9z-2564889-12187" type="single"]</div>



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;



---



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.

Detecting mercury contamination with the tap of a finger

[sendtonews key="LvS8v8bp9z-2564889-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="X0f6OHYoI4-2310561-12187" type="single"]</div>



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



---



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.

How does salt makes things taste better?

[sendtonews key="X0f6OHYoI4-2310561-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JRaP49ISmm-2357509-12187" type="single"]</div>



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



---



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.

Santiago, Chile in South America

[sendtonews key="JRaP49ISmm-2357509-12187" type="single"] Today’s Video of the Day from the...

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"]</div>



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;



---



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.

Interactive map of the universe includes 200,000 galaxies

[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"] Astronomers at Johns Hopkins University have created...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="uV9Lh2fQbV-1760058-12187" type="single"]</div>



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;



---



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



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.

Lesotho: Africa's "Kingdom in the Sky"

[sendtonews key="uV9Lh2fQbV-1760058-12187" type="single"] Lesotho: Africa's "Kingdom in the Sky" Today’s...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"]</div>



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;



---



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

[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="oL4FnPTGCV-2384527-12187" type="single"]</div>



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



---



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 province of Zaragoza in northeast Spain

[sendtonews key="oL4FnPTGCV-2384527-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0879czfG3k-1785905-12187" type="single"]</div>



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



---



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 rapid retreat of the Columbia Glacier

[sendtonews key="0879czfG3k-1785905-12187" type="single"] Today’s Video of the Day from NASA...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"]</div>



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



---



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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="QIoVYJqRBi-2434608-12187" type="single"]</div>



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)



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JbW4VsY53O-1632195-12187" type="single"]</div>



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;



---



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



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qARzJPSabQ-2270617-12187" type="single"]</div>



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;



---



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

[sendtonews key="qARzJPSabQ-2270617-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qas3EhyI0Y-2220951-12187" type="single"]</div>



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



---



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

[sendtonews key="qas3EhyI0Y-2220951-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="vpljfR2VBX-2560867-12187" type="single"]</div>



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



---



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

[sendtonews key="vpljfR2VBX-2560867-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="MHyhtebibJ-2200368-12187" type="single"]</div>



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;



---



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

[sendtonews key="MHyhtebibJ-2200368-12187" type="single"] Today’s Video of the Day from NASA...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="761m2QQvR1-2035772-12187" type="single"]</div>



Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes why satellite images and measurements of our planet have become "essential to our survival, offering a new outlook of our world."&nbsp;



Rising sea levels pose one of the biggest societal threats associated with climate change. According to ESA, satellite altimeter missions such as Copernicus Sentinel-6 are essential in monitoring global and regional changes in sea level.



"Unbeknown to many, the island of Crete, Greece, plays an important role in the Copernicus satellite altimetry constellation and on an international stage," reports ESA.



"Satellite altimetry data have to be continuously monitored at the ESA’s Permanent Facility for Altimetry Calibration where different techniques have pioneered the use of transponders to provide the best measurements to validate satellite altimeters in space soon after launch."



Dr. Craig Donlon explains that, by understanding planet Earth through satellite measurements, we are able to find evidence of change.&nbsp;



Video Credit: European Space Agency&nbsp;



---



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

Satellites have become essential to our survival

[sendtonews key="761m2QQvR1-2035772-12187" type="single"] Today’s Video of the Day from the...