Bumblebees, like humans, are prone to memory errors, sometimes getting confused about details or mixing up features from different events.



In a fascinating study, researchers discovered that our buzzing friends make the same memory conjunction errors as we do, shedding new light on animal cognition.



<h2 class="wp-block-heading" id="h-the-bumblebee-study">The bumblebee study</h2>



Researchers at the <a href="https://www.stir.ac.uk/" target="_blank" rel="noreferrer noopener">University of Stirling</a> set out to explore the cognitive capabilities of bumblebees, focusing specifically on their memory systems.



In the study, wild bumblebees were presented with a unique task involving brightly colored objects soaked in sucrose, the bees' favorite sweet treat. After interacting with these objects, the bees were then tested with four new objects.



One object was identical to what they had seen before, another combined features from the original objects, one had only a single matching feature, and the last was entirely unfamiliar.



<h2 class="wp-block-heading" id="h-episodic-memory-in-bumblebees">Episodic memory in bumblebees</h2>



<a href="https://www.earth.com/news/eurasian-jays-possess-the-ability-of-mental-time-travel/" target="_blank" rel="noreferrer noopener">Episodic memory</a>, the ability to recall specific events from the past, is a function often associated with humans and other mammals. 



However, the bumblebees in this study demonstrated a surprising capacity for episodic-like memory. When given the chance to choose, the bees often successfully identified the original object associated with the sucrose. 



Yet, they made <a href="https://www.earth.com/news/cuttlefish-form-false-memories-events-similar-human-brains/" target="_blank" rel="noreferrer noopener">memory errors</a> at times, selecting an object that was a mix of features from different stimuli.



This phenomenon, known as a memory conjunction error, closely mirrors the types of memory mistakes humans make under similar conditions. So, it turns out we have a close competitor in episodic memory, and it happens to be the bumblebee.



"In humans, the recombination processes that are crucial for memory recollection are argued to make memory prone to errors that arise from mistakenly combining elements of stored episodes," said Dr. Gema Martin-Ordas, who led the research.



"In this context, memory conjunction errors are usual forms of memory distortions, and the results presented here show evidence of bees spontaneously making memory conjunction errors."



<h2 class="wp-block-heading" id="h-complex-memory-system-of-bumblebees">Complex memory system of bumblebees</h2>



The research, conducted during the summer of 2022, involved 50 wild bumblebees. Dr. Martin-Ordas believes that the errors observed in the <a href="https://www.earth.com/news/honeybees-create-mental-maps-to-find-their-way-home/" target="_blank" rel="noreferrer noopener">bees’ memory</a> point to the presence of constructive processes in their cognitive system.



This means that bumblebees are not merely storing memories but actively reconstructing and recombining them, which can lead to errors.



"Memory error paradigms, like the one presented here, offer an interesting avenue of research to examine episodic memory from a new approach, since constructive processes can be used to combine and recombine elements of past events to imagine future ones," noted Dr. Martin-Ordas.



The findings suggest that bumblebees may possess a more complex memory system than previously believed, potentially redefining the boundaries of animal cognition.



<h2 class="wp-block-heading" id="h-sophisticated-memory-processes">Sophisticated memory processes</h2>



This study not only illuminates the fascinating world of bumblebee cognition but also opens up broader discussions about the nature of <a href="https://www.earth.com/news/can-we-trust-our-memories-separating-truth-from-fiction/" target="_blank" rel="noreferrer noopener">memory</a> itself. 



The fact that bumblebees exhibit such sophisticated memory processes challenges long-held assumptions about animal intelligence. 



As researchers continue to explore this domain, we may find that the mental faculties of the animal kingdom - even in creatures as small as bumblebees - are far more intricate than previously thought.



<h2 class="wp-block-heading" id="h-understanding-animal-intelligence">Understanding animal intelligence</h2>



The discovery that bumblebees experience memory conjunction errors, similar to humans, raises new questions about the limits of <a href="https://www.earth.com/news/study-monkeys-are-much-smarter-than-we-thought-they-were/" target="_blank" rel="noreferrer noopener">animal intelligence</a>. 



Traditionally, episodic memory and constructive cognitive processes have been associated with larger-brained animals like primates, birds, and mammals. 



This research expands the scope of these cognitive abilities to insects, suggesting that complex memory processes might not be exclusive to creatures with larger, more intricate brains.



The findings have profound implications for understanding how animals navigate and interact with their environments.



<h2 class="wp-block-heading" id="h-broader-implications-of-the-study">Broader implications of the study </h2>



Bumblebees rely on memory to efficiently forage for nectar and pollen, and their ability to recall past experiences might be crucial for survival. 



The constructive nature of their memory errors suggests that these small insects are capable of flexible, adaptive thinking that allows them to make quick decisions in complex, ever-changing environments.



As we continue to uncover the intricacies of bumblebee memory, this research may inspire further studies into how other insects and smaller creatures process information.



Such revelations could ultimately reshape our understanding of the cognitive abilities present across the animal kingdom, especially in species previously thought to have limited mental faculties.



The study is published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rstb.2023.0405" target="_blank" rel="noreferrer noopener">Philosophical Transactions of the Royal Society B</a>.



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Bumblebees make the same memory mistakes as humans

Bumblebees, like humans, are prone to memory errors, sometimes getting confused about details or mixing up features from different events. In a fascinating study, researchers discovered that our buzzing friends make the same memory conjunction errors as we do, shedding new light on animal cognition. The bumblebee study Researchers at the University of Stirling set out to explore the cognitive capabilities of bumblebees, focusing specifically on their memory systems. In the study, wild bumblebees were presented with a unique task involving brightly colored objects soaked in sucrose,...

Coral,Reef,And,Tropical,Fish,In,The,Red,Sea,,Egypt

The United Nations has embarked on a groundbreaking journey to safeguard the world's high seas with a new <a href="https://www.earth.com/news/historic-treaty-adopted-to-protect-biodiversity-in-the-high-seas/" target="_blank" rel="noreferrer noopener">treaty</a>. This initiative, scheduled to be open for signatures on September 20 at the annual UN General Assembly, heralds the beginning of its ratification process.



<h2 id="h-why-is-this-treaty-vital">Why is this treaty vital?</h2>



The high seas, covering approximately 50% of the Earth's surface, play host to a rich array of <a href="https://www.earth.com/news/human-induced-changes-in-ocean-salinity-threaten-biodiversity-and-marine-ecosystems/" target="_blank" rel="noreferrer noopener">biodiversity</a>. However, activities like deep-sea mining, overfishing, pollution, shipping, and the impacts of climate change have placed these vital waters and their ecosystems at risk.



Rebecca Hubbard, the director of the <a href="https://highseasalliance.org/" target="_blank" rel="noreferrer noopener">High Seas Alliance</a>, emphasized the criticality of this venture. "The high seas constitute two-thirds of the world's ocean. It's pivotal that we commence with the establishment of marine protected areas (MPAs) therein," she asserted.



This vast expanse, beyond national boundary waters and officially termed the <a href="https://press.un.org/en/highlights/BBNJ" target="_blank" rel="noreferrer noopener">Marine Biodiversity of Areas Beyond National Jurisdiction</a> (BBNJ), has so far been devoid of legal protection. This UN High Seas Treaty is set to alter this status quo.



<h2>The process of ratification</h2>



Countries signing the treaty are indicating their intention to ratify it. However, it's essential to understand that a signature is not equivalent to domestic legal approval. To truly adopt the treaty, national legislative measures are necessary for each participating country. The treaty will assume a legally binding nature once 60 nations ratify it.



<h2>Current challenges on the high seas</h2>



Environmental groups and conservationists worldwide are keenly observing the treaty's rollout. According to statistics provided by the <a href="https://globalfishingwatch.org/" target="_blank" rel="noreferrer noopener">Global Fishing Watch</a> and assessed by Greenpeace, the hours dedicated to fishing activities on the high seas saw an upward trend, increasing by 8.5% from 2018 to 2022.



<h2>The High Seas Alliance's crucial role</h2>



Comprising 52 non-governmental organizations and the <a href="https://www.iucn.org/" target="_blank" rel="noreferrer noopener">International Union for the Conservation of Nature</a>, the High Seas Alliance has been instrumental in championing this cause. Their dedication and efforts during treaty negotiations have been pivotal in reaching this "historic" agreement.



Furthermore, they have pinpointed several <a href="https://www.earth.com/news/climate-change-disrupts-the-distribution-of-marine-species/" target="_blank" rel="noreferrer noopener">biodiversity</a> hubs on the high seas that necessitate immediate protection. Notable among these are the <a href="https://www.earth.com/news/the-perfect-pathogen-storm-sargassum-and-plastic-debris/" target="_blank" rel="noreferrer noopener">Sargasso Sea</a>, white shark cafe, Salas y Gómez and Nazca ridges, Costa Rica Thermal Dome, and the Lost City hydrothermal field.



Alexander Killion, Managing Director of the <a href="https://bgc.yale.edu/" target="_blank" rel="noreferrer noopener">Center for Biodiversity and Global Change</a> at Yale University, commented on the significance of the protected areas. He noted the importance of prioritizing these zones, especially to shield species most vulnerable to threats.



<h2>A unified approach to conservation</h2>



In March, unity prevailed among UN member nations, leading to a unanimous agreement dedicated to the world's oceans' protection.



Rena Lee, the conference president, jubilantly declared from the UN Headquarters in New York, "The ship has reached the shore." Her announcement marked the culmination of nearly two decades of rigorous dialogue, with the formal adoption of the treaty following in June.



The treaty's inception showcases the international community's commitment to preserving the planet's vital marine ecosystems. With continued collaboration and adherence, the high seas' future may finally be on a course towards regeneration and sustainability.



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UN High Seas Treaty to protect the oceans nears ratification

The United Nations has embarked on a groundbreaking journey to...

Many,Butterfly,With,Yellow,Flower,Against,Blue,Sky

The annual Big Butterfly Count, a leading citizen science project in the UK organized by <a href="https://butterfly-conservation.org/" target="_blank" rel="noreferrer noopener">Butterfly Conservation</a>, has brought some optimistic news for butterfly enthusiasts. According to the 2023 count, the UK has seen an increase in butterfly numbers, with over 1.5 million butterflies and day-flying moths recorded, contrasting sharply with last year's record low.



On average, participants recorded 12 butterflies during each 15-minute counting session, a significant rise from the previous year's average of nine. This marks the highest count in the past four years. The uplifting results can be attributed to this year's summer heat, as well as the extreme temperatures and drought experienced in 2022.



<h2 id="h-scientists-had-been-concerned">Scientists had been concerned</h2>



The 2022 drought had scientists worried about the potential impact on <a href="https://www.earth.com/news/mystery-solved-when-butterflies-evolved-and-what-plants-they-used-for-food/" target="_blank" rel="noreferrer noopener">butterfly</a> populations. Their main concern was that the extreme heatwave might have negatively impacted the food sources of grass-feeding caterpillars, subsequently leading to a reduction in the number of adult butterflies. 



Dr. Zoë Randle, a senior surveys officer at Butterfly Conservation, expressed relief, noting, "We now know that the effects of last year’s drought were not as bad for butterflies as we had feared."



Dr. Randle explained that the fluctuating weather conditions this year have been advantageous for the butterfly population. The environment had ample green food plants available for caterpillars and a bounty of nectar-rich flowers to feed adult <a href="https://www.earth.com/news/monarch-butterflies-with-more-white-spots-are-more-likely-to-survive-their-migration-journey/" target="_blank" rel="noreferrer noopener">butterflies</a>.



However, taking a step back and looking at the broader picture, the news isn't as rosy. Data collected from The Big Butterfly Count over the past 13 years paints a worrying picture, showing significant declines in many butterfly species. 



<h2>Big Butterfly Count isn't all good news</h2>



Randle emphasizes, "While the number of butterflies recorded this summer has been the highest since 2019, the longer-term trends show worrying declines for some of the UK’s most common butterfly species."



For instance, once commonly seen Small tortoiseshell butterflies have seen their population plummet by 30%. Other species like the green-veined white, common blue, ringlet, and speckled wood have also suffered, with declines of 61%, 44%, 41%, and 38%, respectively.



On a brighter note, the red admiral species is thriving, with an impressive 338% increase in population over the last year, landing it at the top of the chart with 248,077 sightings. Additionally, other species like the holly blue, small copper, painted lady, and large white have shown an upward trend, benefiting from the climatic crisis.



However, it's not all sunshine for every species. For instance, while the gatekeeper took the second spot with a 12% improvement from 2022, its numbers have reduced by 28% over the past 13 years.



Dr. Richard Fox, the head of science at Butterfly Conservation, provides a cautionary perspective, highlighting that while weather variations do influence <a href="https://www.earth.com/news/some-butterflies-actually-expand-their-brain-by-adopting-new-behaviors/" target="_blank" rel="noreferrer noopener">butterfly</a> numbers, habitat destruction is a more pressing concern. Fox states, "Butterflies need a place to live. If they can feed, breed, and shelter, they can thrive."



While this year's butterfly count offers a glimmer of hope, the underlying long-term trends underscore the urgent need for conservation efforts and sustainable habitats to ensure these beautiful creatures continue to grace our gardens and wild spaces.



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Big Butterfly Count count rebounds, hits four-year high

The annual Big Butterfly Count, a leading citizen science project...

A team of paleontologists led by the <a href="https://www.bath.ac.uk/" target="_blank" rel="noreferrer noopener">University of Bath</a> has recently discovered a new species of <a href="https://www.earth.com/news/link-herbivorous-carnivorous-dinosaurs/">herbivorous dinosaur</a> on the Isle of Wight in southern England.&nbsp;



This species, named <a href="https://www.earth.com/wp-content/uploads/2023/09/dinosaur_Vectidromeus-insularis_Isle-of-Wright_Credit-Emily-Willoughby_1big.jpg" target="_blank" rel="noreferrer noopener">Vectidromeus insularis</a>, is the second member of the hypsilophodont family found on the Isle of Wight, suggesting that the European continent had its own group of plant-eating dinosaurs that were distinct from those found in North America and Asia.



<h2 id="h-hypsilophodont-dinosaurs-found-in-europe">Hypsilophodont dinosaurs found in Europe</h2>



Hypsilophodonts were a group of nimble bipedal dinosaurs that roamed around Europe about 125 million years ago, and lived among iconic species such as early tyrannosaurs, spinosaurs, and iguanodons. The recently discovered fossil had the size of a chicken, but was most likely a juvenile and may have grown much larger.



According to the experts, V. insularis was a close relative of Hypsilophodon foxii, a species of dinosaur first described in the Victorian era. Small and graceful, with bird-like hindlimbs, these dinosaurs were used by famous biologist Thomas Huxley as a proof that birds are related to dinosaurs.&nbsp;



<h2 id="h-a-distinct-species">A distinct species</h2>



While H. foxii dinosaurs were also found in Europe on the Isle of Wight, its fossils were discovered higher up in the rocks, suggesting that it was two to three million years younger than V. insularis. Moreover, since the latter’s hip bones were slightly different, it was likely a closely related but distinct species.



“Paleontologists have been working on the Isle of Wight for more than a century, and these fossils have played an important role in the history of vertebrate paleontology, but we’re still making new discoveries about the dinosaur fauna as the sea erodes new fossils out of the cliffs,” said lead author Nicholas Longrich, a paleontologist at Bath.



<h2 id="h-evolving-ecosystems">Evolving ecosystems&nbsp;</h2>



Since the Cretaceous strata on this island are hundreds of meters thick and span several millions of years, the fossils found there are likely evidence of a whole series of evolving ecosystems, each with different types of species.



<h2 id="h-amateur-collectors">Amateur collectors </h2>



In finding and describing these new set of fossils, experts from the University of Bath collaborated with researchers from the <a href="https://www.port.ac.uk/" target="_blank" rel="noreferrer noopener">University of Portsmouth</a>, the <a href="https://www.dinosaurisle.com/" target="_blank" rel="noreferrer noopener">Dinosaur Isle Museum</a> in Sandown, as well as with amateur local fossil collectors.



“Working with the amateur community is really important,” said Longrich. “It’s good to have a diverse team; everyone brings something different to the table. These guys have spent their lives collecting and preparing these fossils, they know details about the rock, the geology, and the bone that nobody else does. Everyone sees different pieces of the puzzle.”



“It is utterly bizarre that so many new dinosaurs are being discovered on the Isle of Wight,” added co-author David Martill, a paleontologist at Portsmouth. “Vectidromeus&nbsp;is the seventh new species of dinosaur to be discovered in the last four years. This is all down to the amateur collectors.”



<h2 id="h-two-distinct-species">Two distinct species</h2>



Although dozens of small herbivorous dinosaurs have been classified over the years as part of the hypsilophodont family, further revisions have resulted in reclassifying most of them, ultimately leaving Hypsilophodon&nbsp;as the only species in this family.



“We had a curious situation where one of the first dinosaur families to be recognized had just one species. And now, we have two,” said Longrich.



“What’s intriguing is that they’re not particularly closely related to anything found in North America, Asia, or the southern hemisphere. We’re still piecing together how all these dinosaurs are related, and how dinosaurs moved between continents. After Pangaea broke up, there was a lot of isolation, leading to different kinds of dinosaurs evolving on each continent.”



<h2 id="h-exciting-dinosaur-discoveries-in-europe">Exciting dinosaur discoveries in Europe</h2>



“This exciting new find is the latest in a line of new discoveries from the Isle of Wight. We are enjoying an amazing time of collaboration between collectors, researchers, and the museum. New finds are being made on the coast, in private collections, and the museum stores," said co-author Martin Hunt, the curator of Dinosaur Isle Museum.



The museum’s mission is to try and ensure as many new finds remain here on the Island for the benefit of our Island community; we anticipate this dinosaur to be on display at the museum for the October school holidays."&nbsp;



The study is published in the journal <a href="http://dx.doi.org/10.1016/j.cretres.2023.105707" target="_blank" rel="noreferrer noopener">Cretaceous Research</a>.



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Europe had very unique plant-eating dinosaurs

A team of paleontologists led by the University of Bath...

Many songbirds can learn an amazing repertoire of warbles, whistles, calls, and songs during their lives. Among them, European starlings rank among the most advanced avian vocal learners.&nbsp;



Now, a team of researchers led by <a href="http://dx.doi.org/10.1126/science.adh3428">Rockefeller University</a> has found that <a href="https://www.earth.com/news/starlings-are-a-perfect-example-of-rapid-evolution/">starlings</a> and other complex vocal learners are also superior problem solvers, demonstrating advanced cognitive skills.



<h2 id="h-focus-of-the-study">Focus of the study&nbsp;</h2>



“There is a long-standing hypothesis that only the most intelligent animals are capable of complex vocal learning,” said lead author Jean-Nicolas Audet, a behavioral ecologist at Rockefeller.&nbsp;



“If that is true, then complex vocal learners should also be better at cognitive tasks, but no one had ever demonstrated that before.”



<h2 id="h-vocal-learning">Vocal learning</h2>



Only a few animal groups are capable of complex vocal learning, defined as the ability to learn and remember a large repertoire of sounds.&nbsp;



While humans, elephants, seals, whales, and bats represent most mammalian vocal learners, songbirds, parrots, and hummingbirds are the most advanced avian vocal learners.&nbsp;



<h2 id="h-how-the-research-was-conducted">How the research was conducted&nbsp;</h2>



For the present study, the experts focused on songbirds, ranking their vocal learning complexity across three metrics: how many songs and calls are in their repertoire, whether they can continue to learn new songs and calls during their lives, and whether they can mimic other species.



To determine whether vocal learning abilities are associated to different cognitive skills, the researchers spent three years catching hundreds of wild songbirds from 21 species in mist nets at the Rockefeller University Field Research Center, a vast 1,200 protected acres of land comprising many different ecosystems in New York’s Hudson Valley.



“It’s a protected area, which means the animals have limited exposure to humans,” said co-author Mélanie Couture, a doctoral student in Computational and Systems Neuroscience at Rockefeller. “This is ideal for studying the behaviors of wild birds - what they can do, and how they react to cognitive tasks.”



<h2 id="h-what-the-researchers-learned">What the researchers learned&nbsp;</h2>



The examination revealed that three species – starlings, blue jays, and gray catbirds (relatives of hummingbirds) – were the most adept in learning and remembering a large number of sounds.&nbsp;



These species were also the only ones capable of mimicking other species, which, according to Audet, is the “epitome of vocal learning.”



<h2 id="h-cognitive-tests">Cognitive tests&nbsp;</h2>



The scientists then ran several cognitive tests on 214 birds from 23 species, including two lab-raised bird species which were added to the wild birds. To test problem-solving abilities, they challenged the birds to remove a lid, pierce foil, and pull a stick to retrieve food.&nbsp;



Moreover, they also assessed the birds’ self-control capacities by placing a transparent barrier between them and a snack, and checking how long it took the birds to stop trying to pass through the barrier and go around it.&nbsp;



Finally, other tests were used to assess whether the birds can learn to associate a specific color with a food reward, and how quickly they adapted when the color changed.



<h2 id="h-problem-solving-abilities">Problem-solving abilities&nbsp;</h2>



The experiments revealed a strong correlation between vocal learning and problem-solving abilities. Starlings, blue jays, and catbirds were both the most advanced vocal learners and the most adept at solving puzzles.&nbsp;



The researchers also discovered that the better a bird was at finding its way around an obstacle, the more complex were its vocal learning skills.&nbsp;



In addition, the investigations showed that advanced vocal learners and problem solvers had larger brains relative to the sizes of their bodies, which may be a biological basis for the study’s findings. However, no other associations were found between the rest of the cognitive tests and vocal learning ability.



“Our next step is to look at the brains of the most complex species and try to understand why they are better at problem solving and vocal learning,” Audet said. “We have a pretty good idea of where vocal learning happens in the brain, but it’s not yet clear where problem solving occurs.”



<h2 id="h-study-implications">Study implications&nbsp;</h2>



These findings suggest that vocal learning, problem solving, and brain size may have co-evolved, possibly as a way of increasing biological fitness.&nbsp;



“Our findings help support a previously unproven notion: that the evolution of a complex behavior like spoken language, which depends on vocal learning, is associated with co-evolution of other complex behaviors,” concluded senior author Erich Jarvis, a biologist at Rockefeller.



The study is published in the journal <a href="http://dx.doi.org/10.1126/science.adh3428">Science</a>.



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Among songbirds, complex vocal learners are superior problem solvers

Many songbirds can learn an amazing repertoire of warbles, whistles,...

New research from the <a href="https://www.exeter.ac.uk/" target="_blank" rel="noreferrer noopener">University of Exeter</a> reveals that lapwings, <a href="https://www.earth.com/news/sea-level-rise-threatens-turtle-breeding-grounds/" target="_blank" rel="noreferrer noopener">ground-nesting</a> birds, have evolved unique methods to remain hidden from their predators.



<h2 id="h-clever-strategies">Clever strategies</h2>



Amidst the vast expanse of open fields, one might wonder how ground-nesting birds protect their nests from predators. The answer, according to recent research, lies in the birds' innovative use of terrain and surroundings.&nbsp;



Lapwings, in particular, have demonstrated an impressive knack for using these natural features to hide in plain sight.



<h2 id="h-decline-of-ground-nesting-birds">Decline of ground-nesting birds</h2>



Ground-nesting species across the world are in a state of decline, and various factors have driven this decline. Land management changes, such as intensive farming and urban development, have considerably impacted their habitats.&nbsp;



A surge in the populations of predators like foxes and crows exacerbates the problem. These predators are a significant threat to the eggs and chicks, leading to reduced bird populations and the failure of conservation projects aimed at preserving these species.



<h2 id="h-lapwing-nesting-habits">Lapwing nesting habits</h2>



The Exeter team set out to investigate the nesting habits of lapwings to better understand their survival tactics. The study primarily focused on the visibility or "occlusion" of lapwing nests.&nbsp;



Using advanced models that emulate the vision and viewing angles of predators, the experts assessed the effectiveness of lapwing camouflage techniques.



<h2 id="h-what-the-researchers-discovered">What the researchers discovered&nbsp;</h2>



The findings are fascinating. Even in open fields, lapwings have mastered the art of hiding their eggs by exploiting small variations in the terrain.&nbsp;



Such variations make the eggs practically invisible to ground-based predators like foxes if they are further than approximately 1.5 meters away.



“Like children playing hide and seek, lapwings use cover to complement their camouflage,” said study lead author George Hancock, from the Centre for Ecology and Conservation on Exeter’s Penryn Campus in Cornwall.



“If a nest is properly concealed in this way, it doesn’t matter how good a predator’s vision is - they simply won’t be able to see it until they are nearly on top of it.



“Nests and eggs are also camouflaged – blending in with their surroundings by matching their backgrounds colour and pattern – but it appears this is a secondary defense.”



<h2 id="h-how-the-research-was-conducted">How the research was conducted&nbsp;</h2>



Hancock collaborated with the Game and Wildlife Conservation Trust (GWCT) and used smart phone 3D scanners to measure the shape and height of lapwing nests and their surroundings.



Specialized cameras were used to measure camouflage from the perspective of the lapwing’s predators (foxes, crows and raptors), which can see ultraviolet light.



“Lapwings tended to choose uneven ground for their nests,” said Hancock. “They selected slightly elevated positions, reducing risk of flooding and allowing them to see predators – without being so high as to stand out to predators.”



<h2 id="h-conservation-efforts">Conservation efforts</h2>



Lapwing populations have more than halved since the 1970s. This research provides crucial insights for their conservation.&nbsp;



Understanding the natural defense mechanisms of these birds can aid in designing better and more effective conservation strategies.



For instance, ensuring that natural terrains with variations are preserved or even created could enhance the safety of these nests.&nbsp;



Furthermore, this knowledge can be applied to other ground-nesting species, potentially reversing the decline seen in their numbers.



<h2 id="h-study-implications">Study implications&nbsp;</h2>



“Habitat variation appears to be crucial for allowing lapwings choice in where to nest,” Hancock explained. “The growth of intensive agriculture has left ground-nesting birds with poorer choices of where to nest.



“Grazed fields provide good habitat, as long as they’re not overstocked with too many grazing animals. New technology is allowing us to better measure how animals see and view the world.



“Tilled fields can provide really good camouflage for eggs which match the bare earth and can be concealed by the rough geometry, but might be problematic for chicks which are more exposed.”



By providing habitats that compliment lapwing camouflage, Hancock said conservation managers could use “nature’s toolkit” – in addition to direct predator control – to help lapwings breed successfully.



The study was funded by the Natural Environment Research Council and GWCT. The findings are published in the journal <a href="http://dx.doi.org/10.1002/ECE3.10471" target="_blank" rel="noreferrer noopener">Ecology and Evolution</a>.



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Lapwings are masters of camouflage, hiding in plain sight

New research from the University of Exeter reveals that lapwings,...

Researchers at <a href="https://www.yorku.ca/" target="_blank" rel="noreferrer noopener">York University</a> have discovered the profound influence of maternal care on the development, <a href="https://www.earth.com/news/mothers-hardships-are-reflected-in-their-childs-gut-microbiome/" target="_blank" rel="noreferrer noopener">microbiome</a>, and overall health of carpenter bees. 



Contrary to popular belief, most wild bees lead solitary lives. But among these solitary creatures, the carpenter bee stands out. These tiny bees nurture and care for their offspring like human mothers.&nbsp;



<h2 id="h-tremendous-health-benefits">Tremendous health benefits&nbsp;</h2>



Maternal care provides tremendous benefits to the microbiome, development, and overall health of the young carpenter bees. It shields the bees from harmful pathogens during crucial stages of development.&nbsp;



In fact, the absence of maternal care results in an alarming increase in pathogen loads. The researchers found that 85 percent of these pathogens were fungi, while 8 percent were bacteria.&nbsp;



<h2 id="h-developmental-changes">Developmental changes&nbsp;</h2>



Such an imbalance drastically affects the bees' microbiome, which is vital for their health. It impacts not just their immune system and gene expression but can lead to developmental changes in their brain, eyes, and even behavior.&nbsp;



One notable fungus, Aspergillus, induces the lethal stonebrood disease in honey bees, turning them into mummified versions of their former selves.



<h2 id="h-focus-of-the-study">Focus of the study</h2>



During the course of the study, researchers closely observed the carpenter bees through four distinct developmental stages, starting from the larvae stage.&nbsp;



The team compared and contrasted the effects of the presence and absence of maternal care on these stages.



<h2 id="h-overall-health">Overall health</h2>



The experts report that a lack of maternal care in the later stages of life causes a diminished microbiome in carpenter bees, which raises their vulnerability to diseases and adversely affects their general health.



The research also highlighted how gene expression or suppression, and the regulation thereof, combined with disease loads and maternal care, play a pivotal role in affecting the bee's microbiome and overall health.



“We are documenting the shifts in development, the shifts in disease loads, and it is a big deal because in wild bees there is a lot less known about their disease loads. We are highlighting all of these factors for the first time,” said senior author Sandra Rehan, a professor in York’s Faculty of Science.



<h2 id="h-critical-early-stages">Critical early stages</h2>



Being single mothers, carpenter bees construct one nest annually within the core of deceased plant stems. Here, from spring to fall, they give birth and look after their young diligently.&nbsp;



However, any factor disrupting the mother from tending to her offspring, such as excessive pruning during spring or fall, escalates the risks of nest predation and parasitism, with dire consequences for the young.



“We found really striking shifts in the earliest stages, which was surprising as we didn’t expect that stage to be the most significantly changed,” said study lead author Katherine Chau.&nbsp;



“Looking at gene expression of these bees you can see how the slightest dysregulation early in development cascades through their whole formation. It is all interconnected and shows how vital maternal care is in early childhood development.”



<h2 id="h-study-implications">Study implications&nbsp;</h2>



This research emphasizes the importance of maternal care in the wild bee's life and the broader implications it holds for their development and overall health.&nbsp;



“It is a complex paper that provides layers of data and shows the power of genomics as a tool,” said Rehan. “It allows us to document the interactions between host and environment. I think that is the power of this approach and the new technologies and techniques that we are developing.”



Rehan hopes the research will give people more insight into the hidden life of bees and their vast differences, but also similarities.&nbsp;



“Often people see bees as a monolith, but when you understand the complexity of bees and that there are wild bees and managed bees, people are more likely to care about bee diversity."



The study is published in the journal <a href="https://www.nature.com/commsbio/">Communications Biology</a>. 



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Maternal care provides lifelong health benefits to carpenter bees

Researchers at York University have discovered the profound influence of...

Currently, biodiversity is dwindling at an alarming pace all over the world. One key method for countering this worrisome trend is protecting various areas around the globe, in a hope that this will suffice to save what is left.&nbsp;



However, while such <a href="https://www.earth.com/news/protected-areas-are-failing-to-safeguard-biodiversity/" target="_blank" rel="noreferrer noopener">protected areas</a> have clearly contributed to slowing biodiversity loss overall, it is still unclear how well they work for different species.&nbsp;



To answer this question, a team of researchers led by the <a href="https://www.helsinki.fi/en" target="_blank" rel="noreferrer noopener">University of Helsinki</a> has recently examined changes in the occurrence of hundreds of species both within and outside of protected areas.&nbsp;



<h2 id="h-slowing-the-rate-of-decline">Slowing the rate of decline</h2>



The analysis revealed mixed effects, suggesting that protected areas do not fully meet the expectations set for them.&nbsp;



Thus, rather than reversing biodiversity loss trends, current protected areas will - at best - help decelerate the rate of species decline, offering more time to act on the underlying causes of biodiversity loss.



<h2 id="h-some-species-benefit-more-than-others">Some species benefit more than others</h2>



“Our results show that only a small proportion of species explicitly benefit from protection, but this varied by group," explained senior author&nbsp;Marjo Saastamoinen, an associate professor of Life Sciences at Helsinki.



"Birds show the highest positive response to protection, one out of five species, and plants show warm-dwelling species benefiting more. Protected areas mostly help by slowing down the decline of species occurrences.”&nbsp;



“Importantly though, larger protected areas and longer protection times enhanced positive effects. The benefits were boosted for many more species, adding evidence for the genuine effects of protection.”



<h2 id="h-focus-of-the-study">Focus of the study&nbsp;</h2>



To assess how effective protected areas are, the experts compared how species were faring within natures reserves to how they were doing in similar yet unprotected areas.&nbsp;



The results showed that many species exhibited similar trends within protected and unprotected regions. Thus, species decline seems to be far from being halted by protecting specific areas.&nbsp;



<h2 id="h-what-the-researchers-learned">What the researchers learned&nbsp;</h2>



The findings suggest that the rate of species decline is slowed down with protection rather than stopped or reversed.&nbsp;



Among the 638 species examined, the scientists discovered that one in five bird species, one in eight mammal species, and only one in twenty plant or phytoplankton species benefit from protection.



“Our findings should not discourage us from establishing protected areas,” said lead author&nbsp;Andrea Santangeli, an expert in Organismal and Evolutionary Biology at Helsinki.&nbsp;



“Quite the contrary, they show that protected areas will buy us some time to counter rapid species loss. By protecting an area, we will slow the local loss of many species – but, at the same time, we cannot stop species loss by simply setting aside some small pieces of land here and there and expect miracles to happen.”



<h2 id="h-study-implications">Study implications&nbsp;</h2>



“What we need to do is to make the overall landscape more suitable for the species. Protected areas can serve as lifeboats, but in the longer run, these lifeboats will still need a safe landing site.”



Therefore, current area-based protection is insufficient for acting as a “silver bullet” for countering species loss.&nbsp;



An efficient approach would be to manage already existing protected areas better and increase their connectedness with each other, while making unprotected regions a better place for more species.&nbsp;



The study is published in the journal <a href="http://dx.doi.org/10.1038/s41467-023-41073-4" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



<h2 id="h-effectiveness-of-protected-areas">Effectiveness of protected areas</h2>



Protected areas (PAs), such as national parks, wildlife reserves, and marine protected areas, play a critical role in conservation efforts. Their effectiveness can be evaluated on various fronts:



<h3 id="h-biodiversity-conservation">Biodiversity conservation</h3>



Many PAs have been successful in safeguarding critical habitats and helping in the recovery of endangered species. For instance, the establishment of mountain gorilla sanctuaries in Africa has played a role in the species' slow but steady population increase.



<h3 id="h-ecosystem-services">Ecosystem services</h3>



PAs can help ensure that ecosystems continue to provide vital services, such as clean water, pollination of crops, and carbon sequestration.



<h3 id="h-cultural-and-recreational-values">Cultural and recreational values</h3>



Protected areas offer places for recreation, spiritual rejuvenation, and cultural activities, benefiting both local communities and tourists.



<h3 id="h-economic-benefits">Economic benefits</h3>



Through ecotourism, many PAs contribute significantly to local and national economies.



<h3 id="h-research-and-education">Research and education</h3>



Protected areas serve as living laboratories where scientists can study ecosystems in relatively undisturbed conditions.



<h2 id="h-influential-factors">Influential factors</h2>



While protected areas have been effective in many contexts, their success depends on several factors, including adequate resources, appropriate management strategies, and the engagement of local communities.



<h3 id="h-size-and-connectivity">Size and connectivity&nbsp;</h3>



Small, isolated PAs might not be sufficient to support viable populations of large or wide-ranging species. Corridors or networks of PAs can be more effective than standalone ones.



<h3 id="h-community-involvement">Community involvement&nbsp;</h3>



If local communities are involved in the management and benefits of PAs, they're more likely to be supportive and help ensure the PAs' long-term success.



<h3 id="h-external-pressures">External pressures</h3>



Protected areas are often threatened by external pressures like pollution, climate change, and invasive species, which might originate outside their boundaries.



<h3 id="h-illegal-activities">Illegal activities</h3>



Furthermore, human activities such as poaching and illegal logging can undermine the goals of a protected area.&nbsp;



<h3 id="h-management-and-funding">Management and funding</h3>



Without adequate resources and skilled personnel, PAs may exist only on paper. These established protected areas, where current protection activities are insufficient to halt degradation, are known as "paper parks."



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Protected areas slow down biodiversity loss, but they can't reverse it

Currently, biodiversity is dwindling at an alarming pace all over...

Siberian,Husky,Dog,With,Narrow,Eyes,,Funny,Smiling,Husky,Dog

In a recent study conducted at the <a href="https://www.vetmeduni.ac.at/en/" target="_blank" rel="noreferrer noopener">University of Veterinary Medicine</a> Vienna, Austria, evidence suggests that both wolves and dogs rely not just on their sense of smell but also on their observational memory and social learning when trying to locate hidden food.



The research was led by Sebastian Vetter and his team and published in the open-access journal <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0290547">PLOS ONE</a>. The study builds upon prior research on social learning in wolves and dogs.



<h2 id="h-study-focused-on-social-learning">Study focused on social learning</h2>



Social learning involves acquiring knowledge by observing or interacting with others. A specific type of this learning, known as observational spatial memory, entails remembering the location where another individual has hidden food.



To delve deeper into this phenomenon, Vetter and his colleagues designed an experiment at the <a href="https://www.wolfscience.at/en/" target="_blank" rel="noreferrer noopener">Wolf Science Center</a> in Ernsbrunn, Austria. The subjects of this experiment comprised 9 timber wolves and 8 mongrel dogs. These animals were tested on their capability to locate 4, 6, or 8 caches of food, with the variable being whether they had observed a human hide the food or not.



<h2>What the scientists learned</h2>



The results were quite revealing. Both species located more of the initial 5 food caches faster and traversed shorter distances when they had witnessed the hiding process. 



This behavior clearly implies that the wolves and dogs didn't rely solely on their sense of smell to find the food, reinforcing the idea of observational spatial memory's existence in these animals.



Interestingly, even with the presence or absence of visual cues, wolves consistently outperformed dogs in locating the hidden caches. However, this doesn't necessarily point to a superior cognitive ability in wolves. The researchers speculate that the difference might be rooted in other characteristics, such as persistence or the motivation driven by food.



Reflecting on the broader implications of their findings, the researchers commented, "While domestication probably affected dogs’ willingness to adjust to humans, the results of the current study collaborate previous findings suggesting that cognitive abilities do not differ very much between dogs and wolves."



This study contributes significantly to the understanding of cognition in wolves and dogs and might reshape how we train and interact with these animals in various settings, from household pets to conservation efforts.



<h2>More about social learning</h2>



Social learning is a fascinating process through which individuals acquire new behaviors, skills, or information by observing and imitating others. Unlike individual trial-and-error learning, where an individual learns solely through their own experiences, social learning allows for faster adaptation by leveraging the knowledge and experiences of others.



At its core, social learning hinges on observation. From a young age, humans watch their peers, elders, and even media representations to learn how to act, speak, and even think. For example, a child might learn to tie their shoes by watching a parent or sibling, skipping the painstaking process of figuring it out alone.



<h3>Animals also practice social learning</h3>



As noted earlier in this article, humans aren't the only species that benefit from social learning. Many animals, from birds to primates, observe and mimic others in their group. 



For instance, a young chimpanzee might learn to use a stick to extract termites by watching an elder demonstrate the technique. This mode of learning has considerable advantages.



Efficiency: By observing, individuals can avoid potential risks and pitfalls that come with trial-and-error methods.



Cultural Transmission: Social learning plays a pivotal role in passing down traditions, customs, and techniques from one generation to the next.



Adaptation: In changing environments, observing successful behaviors in peers can lead to quicker adaptation.



In the modern age, with the rise of digital media and online communities, the scope of social learning has expanded exponentially. Platforms like YouTube, where one can watch and learn anything from cooking to coding, are testaments to the power and reach of social learning in today's interconnected world.



In essence, social learning is a testament to the age-old saying, "Monkey see, monkey do." By observing and imitating, we not only preserve valuable knowledge but also foster innovation and adaptation, proving that sometimes, watching is indeed learning.



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Dogs and wolves have social learning ability and can remember where people hid food

In a recent study conducted at the University of Veterinary...

Ecuador, home to a rich tapestry of biodiversity, has unveiled a new entrant: the Neacomys marci. This recently identified spiny mouse species, previously mistaken for another of its kind, bears the length equivalent to a tennis ball. 



With distinctive features such as a pale suede underbelly, a long tail, and a white throat, it stands as the 24th recognized species in its genus, Neacomys.



<h2 id="h-many-recent-spiny-mouse-discoveries">Many recent spiny mouse discoveries</h2>



The last five years have been revolutionary for the Neacomys genus with the discovery of 14 new species, including Neacomys marci. 



Found in the Chocó biogeographic region, one of South America's significant biodiversity hotspots, this region is not only expansive, stretching along the Pacific coasts of Panama, Colombia, and Ecuador, but it's also notably under-researched. 



This particular part of northwestern <a href="https://www.earth.com/news/two-new-species-of-carnivorous-plants-discovered-in-ecuador/" target="_blank" rel="noreferrer noopener">Ecuador's rainforests</a> boasts immense biodiversity and endemism, credit being owed to the confluence of the Chocó and the Andes Mountains.



<h2>How the study was conducted</h2>



The journey to recognizing Neacomys marci didn't happen in isolation. Collaborative efforts among researchers Nicolás Tinoco of <a href="https://www.puce.edu.ec/" target="_blank" rel="noreferrer noopener">Pontificia Universidad</a> Católica del Ecuador, Claudia Koch from Germany's <a href="https://www.leibniz-gemeinschaft.de/en/institutes/leibniz-institutes-all-lists/leibniz-institute-for-the-analysis-of-biodiversity-change#:~:text=The%20Leibniz%20Institute%20for%20the,for%20society%20as%20a%20whole." target="_blank" rel="noreferrer noopener">Leibniz Institute</a> for the Analysis of Biodiversity Change, Javier E. Colmenares-Pinzón of <a href="https://www.uis.edu.co/" target="_blank" rel="noreferrer noopener">Universidad Industrial de Santander</a> in Colombia, and Jorge Brito from <a href="http://inabio.biodiversidad.gob.ec/" target="_blank" rel="noreferrer noopener">Instituto Nacional de Biodiversidad</a> in Quito, Ecuador were integral to this revelation. 



Their in-depth description and findings on this rodent have been <a href="https://doi.org/10.3897/zookeys.1175.106113" target="_blank" rel="noreferrer noopener">published in the open-access journal, Zookeys</a>.



As a genus, Neacomys has made its presence known across eastern Panama and the northern regions of South America. Studies since 2017 have invigorated the understanding of this genus, introducing several new species. 



However, given the expansive uncharted terrains of South America and nearby Panama, many believe that the genus's true diversity might still be lurking in the shadows, waiting for further discovery.



Modern scientific approaches, including molecular analysis, have been paramount in identifying <a href="https://www.earth.com/news/dozens-of-frog-species-rediscovered-in-ecuador/" target="_blank" rel="noreferrer noopener">animal groups</a> with more precision. Additionally, extensive reviews of museum collections and augmented field collection endeavors have been pivotal in comprehending not just Neacomys marci but its peer species as well.



<h2>How to name a new spiny mouse</h2>



The naming of this new species pays tribute to Marc Hoogeslag from Amsterdam, Netherlands. As a co-founder and leader of the International Union for Conservation of Nature - Netherlands Land Acquisition Fund, Hoogeslag has been instrumental in aiding local groups globally in crafting new ecological reserves and championing the cause of endangered species conservation. 



The discovery of Neacomys marci in the EcoMinga Foundation's Manduriacu Reserve stands as testament to the impact of Hoogeslag's initiatives, with the reserve being one of the many beneficiaries of his program.



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New species of spiny mouse discovered in Ecuador

Ecuador, home to a rich tapestry of biodiversity, has unveiled...

In an era long past, when the Earth was hot and humid, marine life thrived. The sea teemed with early squids, eel-like fish, and sea worms, all hunting smaller marine animals -- like the springtails.



Yet, above ground, life had not yet ventured. Such was the state of our planet about 450 million years ago, at the tail end of the <a href="https://www.earth.com/wp-content/uploads/2023/09/Ordovician-period_illustration_Credit-Fritz-Geller-Grimm_1big.jpeg" target="_blank" rel="noreferrer noopener">Ordovician period</a>.



The warm oceans provided an idyllic haven for marine creatures, but change was imminent. Earth’s once balmy land masses began to freeze, as a vast ice cap steadily expanded across its surface.



The previously hospitable waters transformed into cold, unforgiving habitats. Within a brief span, our world witnessed its second-worst mass extinction event. Half of all known species were obliterated.



<h2 id="h-springtails-are-everywhere">Springtails are everywhere</h2>



However, against the odds, the springtail emerged as a survivor. These insect-like creatures are minute, with the largest among them only stretching to six millimeters. At a casual glance, you might mistake them for a garden-variety insect, but they command a unique evolutionary branch.



Over 9,000 species of springtails have been identified, and their habitats range from the soils of backyards to the foliage of dense forests. Interestingly, they get their name from a forked tail, also known as furcula, which allows them to jump up to 10 centimeters high when threatened, a notable feat for such a tiny creature.



Amidst the ever-expanding list of their fascinating traits, springtails have another impressive adaptation: <a href="https://www.earth.com/news/snailfish-have-a-secret-weapon-to-survive-in-frozen-arctic-waters/" target="_blank" rel="noreferrer noopener">antifreeze proteins</a>.



<h2>Tiny animals and antifreeze proteins</h2>



A fascinating <a href="https://www.nature.com/articles/s41598-023-35983-y" target="_blank" rel="noreferrer noopener">new study</a> by researchers from <a href="https://international.au.dk/" target="_blank" rel="noreferrer noopener">Aarhus University</a> and <a href="https://www.queensu.ca/" target="_blank" rel="noreferrer noopener">Queen’s University</a> in Canada suggests that the springtail may have been the first animal to ever produce antifreeze proteins. Prior to this discovery, the scientific consensus was that animals did not develop this ability until much later.



“We knew that antifreeze proteins had developed independently of each other several times during evolutionary history. Fish have them. Insects have them. Some spiders have them. But until we saw these results, we didn't know that they’d developed so early in the animal world," says Professor Martin Holmstrup of the Department of Ecoscience at Aarhus University.



<h2>How to find springtails</h2>



Martin Holmstrup and his colleagues collected the springtails from Denmark, Iceland, and Greenland for their lab. Finding them isn't difficult. You might even discover them in your garden. Here's how:



<ol type="1">
<li>Take a handful of soil or foliage from your garden and put it in a sieve. </li>



<li>Position an adjustable lamp above the sieve and set a tray underneath. </li>



<li>The lamp's heat drives the springtails to seek cooler surroundings, causing them to fall through the sieve. You can then observe them scurrying about in the tray.</li>
</ol>



<h2>What the researchers learned</h2>



Holmstrup, who oversees nearly 20 species of springtails in his laboratory, sent samples to his Canadian colleagues to ascertain when these creatures first developed the antifreeze protein. With DNA sequencing technology, the team searched for sequences associated with antifreeze protein production across a wide range of species.



Their findings? The gene mutation leading to antifreeze protein genesis happened during the Ordovician period.



"The calculations show that springtails developed the antifreeze protein long before other animals. It didn’t happen for fish and insects until a million years later. Although plants and microorganisms, such as bacteria and single-celled algae, might have developed a similar mechanism even earlier,” Holmstrup adds.



<h2>Springtails dry out like raisins</h2>



While these proteins are vital, springtails have another survival mechanism. To protect their cells from freezing, they undergo a form of hibernation, drying out completely. In this state, their metabolism drops to near-undetectable levels.



“You can compare them to a grape that dries into a raisin in a process reminiscent of freeze-drying. The springtails shrink and become small, wrinkly critters in winter. And then, when spring arrives, they absorb water and swell back to normal size,” Holmstrup explains.



<h2>Antifreeze proteins and the food industry</h2>



The concept of antifreeze proteins first emerged in the mid-20th century. For years, scientists were puzzled at how Arctic fish could thrive in icy waters that, based on temperature alone, should have frozen them. It wasn’t until the late 1960s that the American researcher Arthur DeVries identified these proteins in Arctic fish, noting their ability to prevent ice from forming within their cells.



Today, the implications of these proteins reach beyond our understanding of evolutionary survival. The food industry, particularly in the frozen sector, has taken a keen interest.



Holmstrup shares, "The genes that encode the antifreeze proteins in fish have been copied into industrial yeast cell cultures. This makes the yeast produce the very useful proteins, which can then be added to different foods."



For instance, companies like Unilever have integrated these proteins into ice creams, resulting in enhanced textures and an improved freezing-thawing process. But the potential applications don't end there.



As Holmstrup concludes, "In the longer term, this effect could be used in connection with the cryopreservation of transplant organs. Other industries like the aerospace and wind turbine industries have also experimented with the proteins. They hope the proteins can protect wings from freezing and needing to be de-iced.”



In understanding the springtail's evolutionary triumph, we not only gain insight into our planet's rich past but also draw inspiration for technological advancements in our future.



<h2>More about the Ordovician period</h2>



Dive deep into Earth's geologic timeline, and you'll find the Ordovician Period. Spanning from approximately 485 to 443 million years ago, this epoch, following the <a href="https://www.earth.com/news/when-did-the-first-animals-appear-on-earth-we-are-now-one-step-closer-to-knowing-the-answer/" target="_blank" rel="noreferrer noopener">Cambrian Period</a>, paints a vivid picture of an ever-evolving world.



<h3>A flourishing marine life</h3>



The Ordovician Period primarily showcased an explosion in marine life. Oceans covered a vast majority of the Earth's surface, and within these primordial waters, diverse marine species thrived. Trilobites, brachiopods, graptolites, and nautiloids dominated the oceans. Notably, corals began constructing the first significant reef systems, laying the foundation for an ecosystem we recognize and value today.



However, it wasn't just about the animals. The first evidence of green algae appeared during this period, indicating the beginnings of plant life that would later colonize the land. The marine plankton diversified, which led to a significant increase in the overall amount of life. This diverse marine food web set the stage for the rapid evolution and proliferation of predatory organisms.



<h3>Advancements in ocean dynamics</h3>



The world's continents underwent significant transformation during the Ordovician. The supercontinent known as Gondwana was on a slow journey toward the South Pole. This migration played a key role in shaping oceanic patterns and sea levels. As Gondwana approached the pole, global cooling ensued, setting the stage for the period's eventual ice age.



<h3>The rise of fish</h3>



Fish, albeit very early fish, first emerged during the Ordovician Period. Although these early fish lacked jaws, they still represented a significant evolutionary advancement, marking the onset of vertebrates' dominance in the following periods. These early fish primarily relied on filter feeding, with their soft bodies navigating the depths of the ancient oceans.



<h3>Life takes its first steps on land</h3>



While the Ordovician seas teemed with life, land remained mostly barren. However, by the end of the period, the first evidence of life on land began to emerge. Early, non-vascular plants called bryophytes likely took root on terrestrial landscapes. These first steps onto land would pave the way for the more advanced plants and animals that would later dominate the Silurian and Devonian periods.



<h3>A freezing conclusion</h3>



The Ordovician Period did not end quietly. The movement of Gondwana over the South Pole led to widespread glaciation. This global cooling caused a drop in sea levels, which, combined with other yet-to-be-confirmed factors, triggered the Ordovician mass extinction. This catastrophic event wiped out nearly 60% of marine invertebrate genera and 85% of marine invertebrate species.



However, despite its chilling conclusion, the Ordovician Period remains significant for its contributions to Earth's evolutionary history. It showcased the diversification and dominance of marine life, saw the emergence of the first fish and land plants, and underwent significant geological changes that shaped the Earth as we know it. 



The legacy of the Ordovician Period offers us a profound understanding of our planet's dynamic history and the intricate web of life it nurtures.



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What are springtails and why would humans not exist without them?

In an era long past, when the Earth was hot...

Many <a href="https://www.earth.com/news/spiders-turn-to-cannibalism-when-food-sources-are-limited/">spiders</a> near water bodies feed on insects like dragonflies. But when these insects inhabit mercury-contaminated waters, they might transfer this hazardous metal to spider species that feed on them.&nbsp;



Thus, according to a new study led by the <a href="https://www.usgs.gov/centers/upper-midwest-water-science-center" target="_blank" rel="noreferrer noopener">U.S. Geological Survey Upper Midwest Water Science Center</a>, spiders with habitats close to the shoreline can move mercury contamination from riverbeds up the food chain to land animals.



<h2 id="h-contaminant-transfer">Contaminant transfer</h2>



Adult aquatic insects provide subsidies to linked terrestrial ecosystems, supporting consumers such as birds, bats, amphibians, and spiders.&nbsp;



However, contaminants that are accumulated by aquatic insect larvae and retained through metamorphosis can result in insect-mediated contaminant transfer (i.e., flux) to terrestrial biota.



"The transfer of contaminants from aquatic to terrestrial ecosystems represents an often overlooked exposure pathway that can elevate health risks to wildlife, highlighting the need for monitoring recipient terrestrial animals that eat aquatic insects emerging from contaminated waters,” the authors explained.



<h2 id="h-methylmercury">Methylmercury</h2>



A significant proportion of the mercury present in aquatic environments comes from industrial waste and other human-related activities (although there are natural sources of mercury too).&nbsp;



When this mercury reaches the water, microorganisms transform it into methylmercury, a more toxic form that biomagnifies and increases in animals up the food chain.&nbsp;



As a result, researchers have increasingly recognized spiders living on lakeshores and riverbeds as a potential link between aquatic contamination and predominantly terrestrial creatures such as birds, amphibians, and bats.&nbsp;



<h2 id="h-how-the-research-was-conducted">How the research was conducted</h2>



To better understand this phenomenon, the experts assessed whether shoreline spiders’ tissue contained mercury from adjacent aquatic sources and examined how these animals connect mercury pollution in water and land animals.



The scientists collected long-jawed spiders found near two tributaries of Lake Superior, and gathered samples of sediments, dragonfly larvae, and yellow perch fish from these locations.&nbsp;



Afterwards, they identified and measured the various sources of mercury contamination, including direct industrial discharge, rainwater, and land runoff.&nbsp;



<h2 id="h-what-the-researchers-learned">What the researchers learned</h2>



The analysis revealed that the origin of mercury in the sediments was identical up the aquatic food chain in wetlands, reservoir shorelines, and urban shorelines.&nbsp;



For example, when sediment contained a higher level of industrial mercury, so did the dragonfly larvae, spider, and yellow perch tissues that they examined. According to this data, long-jawed spiders could indicate how mercury pollution moves from aquatic environments to land-based wildlife.&nbsp;



Thus, such spiders could shed new light on the sources of mercury pollution and inform management decisions by providing a novel tool for the monitoring of remediation activities.



The researchers also collected and analyzed tissue samples from two additional types of arachnids from certain locations: the fishing spider and the orb-weaver spider.&nbsp;



<h2 id="h-study-implications">Study implications&nbsp;</h2>



The data indicated variability in mercury sources across these different taxa. Such variability can be attributed to their distinctive feeding patterns: while fishing spiders predominantly hunt on land near water, orb-weavers consume both water and land-based insects.&nbsp;



The long-jawed variety, however, mainly preys on adult water insects. Thus, these findings suggest that, although long-jawed spiders are reliable indicators of aquatic pollution, not every species living near the shoreline can be considered an effective mercury pollution sentinel.



<h2 id="h-mercury-contamination">Mercury contamination&nbsp;</h2>



Mercury contamination is a serious environmental issue caused by the release of mercury into ecosystems. It can occur through industrial processes, mining, and natural sources.&nbsp;



Mercury is toxic to humans and wildlife, and it can accumulate in organisms, leading to health problems, including harmful effects on the nervous, digestive and immune systems.



Efforts to reduce mercury contamination include stricter regulations on emissions and responsible disposal of mercury-containing products.



The study is published in the journal <a href="http://dx.doi.org/10.1021/acs.estlett.3c00450" target="_blank" rel="noreferrer noopener">Environmental Sciences &amp; Technology Letters</a>.



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Spiders transfer mercury contamination from water to land animals

Many spiders near water bodies feed on insects like dragonflies....

A recent Europe-wide study has investigated the prevalence of protozoans, bacteria, and viruses in birds and bats that are potentially pathogenic to humans and domestic animals. The experts compiled the results of over 700 scientific articles and nearly half a million observations in varying climate conditions.&nbsp;



The researchers identified specific climatic factors that can significantly alter the risk of succumbing to <a href="https://www.earth.com/news/climate-change-heightens-risk-of-most-infectious-diseases/">infectious diseases</a>.



<h2 id="h-pathogen-occurrence">Pathogen occurrence&nbsp;</h2>



By combining data on the occurrence of more than 75 pathogenic microbes across Europe from almost 400 bird and 40 bat species with climatic factors, the scientists discovered that the occurrence of most pathogens is associated with temperature and rainfall.



“In general, the occurrence of pathogenic bacteria increased in areas with a warm and dry climate. On the other hand, pathogenic viruses prefer moist climate,” said lead author&nbsp;Yanjie Xu, a postdoctoral fellow in Ecology and Evolutionary Biology at the <a href="https://www.luomus.fi/en/natural-history-museum">Finnish Museum of Natural History</a> from the University of Helsinki.



<h2 id="h-climatic-factors">Climatic factors&nbsp;</h2>



The link between climatic factors and pathogens could be reliably assessed on the 17 pathogen taxa with most data. According to the researchers, the observed associations significantly varied.



<h3 id="h-temperature">Temperature</h3>



“Temperature was positively associated with occurrence of avian flu virus, malaria-parasite, and bacteria that cause chlamydia, salmonella, Q-fever, and typhus in birds and bats,” explained co-author&nbsp;Arto Pulliainen, an expert in Biomedicine at the <a href="https://www.utu.fi/en">University of Turku</a>.



<h3 id="h-rainfall">Rainfall</h3>



Rainfall had both positive and negative associations with the occurrence of different pathogens. For example, rises in rainfall increased the probability for the occurrence of Usutu-, Sindbis- and avian flu viruses and salmonella bacteria.



“Usutu- and Sindbis-viruses are vectored by mosquitoes, and rainfall can increase the occurrence of wetlands favored by mosquitoes. Similarly, avian flu and salmonella are prevalent particularly in waterfowl, for whom wetlands are also of importance,” said co-author Thomas Lilley, a professor of Ecophysiology&nbsp;at the Finnish Museum of Natural History.



<h2 id="h-distribution-ranges">Distribution ranges&nbsp;</h2>



According to the scientists, climate change modifies the distribution ranges of both the pathogens and their hosts. For instance, the distribution ranges of birds have already been observed to shift northwards by more than a kilometer per year.&nbsp;



“There is a possibility that for instance thermophilic pathogens become more common in northern Europe as a cause of climate change,” said senior author Aleksi Lehikoinen, a curator at the Finnish Museum of Natural History.



<h2 id="h-study-implications">Study implications&nbsp;</h2>



“Our results suggest that rising temperature and increasing precipitation will accelerate the threat of bird- and bat-associated bacterial and viral pathogens to wildlife, domesticated animals and humans, respectively," said the study authors.&nbsp;



"However, the idiosyncratic relationships with climatic conditions among pathogenic taxa highlight the need for pathogen-specific predictive models to understand future pathogen distributions."



The study is published in the journal <a href="http://dx.doi.org/10.1111/ecog.06783">Ecography</a>.



<h2 id="h-more-about-bat-and-bird-viruses">More about bat and bird viruses</h2>



Bats and birds are known to be reservoirs for various viruses that can sometimes spillover and infect other animals, including humans.&nbsp;



<h3 id="h-bat-viruses">Bat viruses</h3>



<h4 id="h-coronaviruses">Coronaviruses</h4>



The most well-known of these is SARS-CoV-2, the causative agent of COVID-19. Bats are believed to be the natural reservoir for various coronaviruses, including the ones responsible for Severe Acute Respiratory Syndrome (SARS) and Middle East Respiratory Syndrome (MERS).



<h4 id="h-ebola-and-marburg-viruses">Ebola and marburg viruses</h4>



These are hemorrhagic fever viruses with bats serving as a potential reservoir. They can be transmitted to humans and non-human primates leading to severe outbreaks.



<h4 id="h-rabies-and-other-lyssaviruses">Rabies and other lyssaviruses</h4>



Bats can be reservoirs for rabies virus and other related viruses. Transmission to humans is rare but can be fatal without treatment.



<h4 id="h-nipah-and-hendra-viruses">Nipah and hendra viruses</h4>



These viruses are found in fruit bats and can spill over to other animals and humans, causing severe respiratory and neurological disease.



<h3 id="h-bird-viruses">Bird viruses</h3>



<h4 id="h-avian-influenza">Avian influenza</h4>



Often referred to as "bird flu," various strains of avian influenza virus can infect birds. Some of these strains, like H5N1 and H7N9, have caused severe illnesses in humans.



<h4 id="h-west-nile">West Nile&nbsp;</h4>



While this is primarily a mosquito-borne virus, birds are the main reservoir. Mosquitoes transmit the virus after biting infected birds and can then infect mammals, including humans.



The existence of these viruses in natural reservoirs emphasizes the importance of surveillance, understanding wildlife ecology, and the interactions between wildlife, livestock, and humans.&nbsp;



Reducing the interface between wild animals and humans, like by limiting the wildlife trade or encroachment into natural habitats, can help minimize the risk of future outbreaks.



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Which climatic factors promote the spread of zoonotic diseases?

A recent Europe-wide study has investigated the prevalence of protozoans,...

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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



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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



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The Pyrenees Mountains in southwest Europe

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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"

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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

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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



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Satellites capture the world's biggest and fastest waves

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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;



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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

Satellites have become essential to our survival

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