PanoRadar marks a breakthrough in the ever-advancing world of robotics, addressing the challenge of providing effective perception systems for robots that can function in severe weather and unfavorable conditions. 



Unlike traditional sensors, PanoRadar uses radio waves to penetrate smoke, fog, and even certain materials, offering a robust alternative to light-based systems. 



This innovative approach paves the way for more resilient robotic applications, from autonomous vehicles to rescue missions in hazardous environments.



<h2 class="wp-block-heading" id="h-limitations-of-traditional-sensors">Limitations of traditional sensors</h2>



Current sensor systems, such as cameras or LiDAR, rely on light, which limits their effectiveness in conditions like heavy smoke or fog. Alternatively, they may rely on traditional radar which can 'see' through walls and other obstacles, but which produce images lacking in detail.



Nature, however, shows us that perception need not rely solely on light. Bats use <a href="https://www.earth.com/news/soundwaves-can-be-used-to-move-objects/" target="_blank" rel="noreferrer noopener">sound wave</a> echoes for navigation, while sharks detect electrical fields from their prey's movements. 



These examples highlight alternative perception methods that can inform technological innovations, like radio wave-based sensing.



<a href="https://www.earth.com/news/some-radio-waves-disrupt-the-magnetic-compass-of-migratory-birds/" target="_blank" rel="noreferrer noopener">Radio waves</a>, with their longer wavelengths, can penetrate challenging conditions and even certain materials, surpassing the limitations of human vision and conventional sensors. 



<h2 class="wp-block-heading" id="h-panoradar-a-new-era-of-robot-vision">PanoRadar: A new era of robot vision</h2>



Enter researchers from the <a href="https://www.upenn.edu/" target="_blank" rel="noreferrer noopener">University of Pennsylvania</a> School of Engineering and Applied Science (Penn Engineering). They have initiated a new era in robot vision with their creation, the PanoRadar.



This novel invention enables robots to perceive their surroundings in three dimensions with incredible detail, by transforming simple radio waves into detailed, 3-D images of the environment.



"Our initial question was whether we could combine the best of both sensing modalities - the robustness of radio signals, which is resilient to fog and other challenging conditions, and the high resolution of visual sensors," explained Mingmin Zhao, assistant professor of computer and information science.



The birth of PanoRadar is the novel answer to this complex challenge. It has opened new possibilities for robotic perception in environments where traditional systems fail.



<h2 class="wp-block-heading" id="h-how-does-panoradar-work">How does PanoRadar work?</h2>



Think about how a lighthouse works. It sweeps its beam in a circle, scanning the entire horizon, revealing the presence of ships and coastal features. That's how the PanoRadar operates. 



It consists of a rotating vertical array of antennae that scan the surroundings. These antennae send out radio waves and listen for their reflections from the environment.



But PanoRadar is not just a simple scanner. It intelligently combines measurements from all rotation angles, enhancing its imaging resolution. 



"The key innovation is in how we process these radio wave measurements. Our signal processing and <a href="https://www.earth.com/news/machine-learning-reveals-how-to-prevent-covid-19-from-ever-returning/" target="_blank" rel="noreferrer noopener">machine learning</a> algorithms are able to extract rich 3D information from the environment," explained Zhao.



This novel approach allows PanoRadar to achieve imaging resolution comparable to that of LiDAR, but at a fraction of the cost.



<h2 class="wp-block-heading" id="h-comprehending-and-interpreting-complex-data">Comprehending and interpreting complex data</h2>



Implementing high-resolution imaging while the robot is moving presented a significant challenge. The team needed to combine measurements from various positions with sub-millimeter accuracy.



"Even small motion errors can significantly impact the imaging quality," said Haowen Lai, lead author of the paper.



In addition, they had to train their system rigorously to comprehend and interpret the complex data it receives, to ensure that it could accurately identify and understand various objects and environmental features in real time.



"Indoor environments have consistent patterns and geometries. We leveraged these patterns to help our AI system interpret the <a href="https://www.earth.com/news/radar-imaging-will-help-protect-polar-bears-from-human-disturbances/" target="_blank" rel="noreferrer noopener">radar</a> signals, similar to how humans learn to make sense of what they see," explained Gaoxiang Luo.



Thanks to machine learning algorithms, the model was able to improve its understanding against reality using LiDAR data.



<h2 class="wp-block-heading" id="h-radio-waves-and-robot-vision">Radio waves and robot vision</h2>



PanoRadar’s capabilities extend beyond what traditional sensors can perceive.



"Our field tests across different buildings showed how radio sensing can excel where traditional sensors struggle," said Liu. "The system maintains precise tracking through smoke and can even map spaces with glass walls."



This advantage comes from the ability of radio waves to pass through airborne particles with ease, allowing the system to detect elements that LiDAR often misses, such as glass surfaces. 



Additionally, PanoRadar's high resolution enables it to identify people accurately, an essential capability for applications like autonomous vehicles and rescue operations in challenging environments.



These attributes make PanoRadar a game-changer for robots operating in difficult conditions, where reliability and precision are paramount.



The research will be presented at the 2024 International Conference on Mobile Computing and Networking (<a href="https://search.app?link=https%3A%2F%2Fwww.sigmobile.org%2Fmobicom%2F2024%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">MobiCom</a>).



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Giving robots 'superhuman' vision through radio waves

PanoRadar marks a breakthrough in the ever-advancing world of robotics, addressing the challenge of providing effective perception systems for robots that can function in severe weather and unfavorable conditions. Unlike traditional sensors, PanoRadar uses radio waves to penetrate smoke, fog, and even certain materials, offering a robust alternative to light-based systems. This innovative approach paves the way for more resilient robotic applications, from autonomous vehicles to rescue missions in hazardous environments. Limitations of traditional sensors Current sensor systems, such as cameras or LiDAR, rely on light, which...

A new study led by the <a href="https://www.sdu.dk/en">University of Southern Denmark</a> (SDU) has found that carnivorous animals such as foxes, leopards, and <a href="https://www.earth.com/news/wolves-do-not-prefer-to-prey-on-livestock/">wolves</a> are more susceptible to cancer than herbivorous animals like antelopes or sheep. These findings highlight the fact that cancer is not only a human affliction, and opens new pathways for understanding this disease in a variety of animal species.



The scientists studied cancer incidence in 110,148 zoo-kept mammals from 191 different species and found that, while cancer is a ubiquitous disease affecting all mammals, when it comes to cancer susceptibility not all animals are at equal risk. Meat-eating animals appeared to be more prone to develop this disease, in comparison to herbivorous ones. In fact, over a quarter of bat-eared foxes, clouded leopards, and red wolves in the study were found to have died of cancer.



“Overall, our work highlights that cancer might represent a serious and significant threat to animal welfare, [one] that needs considerable scientific attention,” said study co-author Fernando Colchero, an associate professor of statistics at SDU.



While previous studies have argued that cancer disproportionately affects larger, long-lived organism, due to their greater number of cell divisions and increased probability of somatic mutations, Professor Colchero and his colleagues have found that cancer mortality was “largely independent of both body mass and adult life expectancy across species.”&nbsp;



A much more important factor determining cancer susceptibility appeared to be diet, “with carnivorous mammals (especially mammal-consuming ones) facing the highest cancer-related mortality.” According to the scientists, this could be explained by the fact that carnivorous animals have a lower microbiome diversity, or that they may be more susceptible to cancer-causing viral infections.



“These results highlight the key role of life-history evolution in shaping cancer resistance and provide major advancements in the quest for natural anticancer defenses,” the authors concluded.



The study is published in the journal <a href="https://www.nature.com/articles/s41586-021-04224-5?utm_medium=affiliate&amp;utm_source=commission_junction&amp;utm_campaign=3_nsn6445_deeplink_PID100032693&amp;utm_content=deeplink">Nature</a>.



---



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

Meat-eating animals are more susceptible to cancer

A new study led by the University of Southern Denmark...

According to a new study led by the <a href="https://www.ucla.edu/">University of California, Los Angeles</a> (UCLA), handing out gifts significantly lowers blood pressure and heart rate, thus decreasing the risk of <a href="https://www.earth.com/news/common-air-pollutants-contribute-to-cardiovascular-disease/" data-type="news" data-id="1894645">cardiovascular</a> incidents such as heart attacks or strokes.&nbsp;



While previous studies have shown that the act of giving can improve mood and mental wellbeing, this is the first study to investigate the correlation between gift giving and cardiovascular benefits.



The researchers recruited 90 college students and initially exposed them to a stressful situation by telling them that they have only a few minutes to prepare for a speech they had to deliver in front of a large audience.&nbsp;



After measuring their heart rate and blood pressure (which usually spiked after being exposed to the stressor), half of the students were told that they could choose a gift and send it to anyone they wanted together with an email explaining why they chose them. The rest of the participants were told to choose a gift card for themselves.



The scientists found that, when stressed students were allowed to send someone a gift, both their heart rate and blood pressure decreased significantly. By contrast, there was no significant cardiovascular improvement in the case of the other participants.



“Prosocial behavior – or the warm glow of giving – can have many benefits. As well as reducing heart rate and blood pressure, it lowers rates of depression and stress. We found it had a greater effect than self-rewarding behavior,” reported the study authors.



“Giving gifts or helping others makes us more sociable and less aggressive. Much of our normal lives are spent earning money to look after ourselves and our families, often in jobs where sometimes you have to be ruthless with other people. Giving Christmas presents is a chance to compensate for that – and it’s good for our health,” concluded study co-author Gary Cooper, a psychologist and stress expert at <a href="https://www.alliancembs.manchester.ac.uk/">Alliance Manchester Business School</a>.



The study is published in the journal <a href="https://onlinelibrary.wiley.com/journal/14698986">Psychophysiology</a>.



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

Gift giving lowers blood pressure and heart rate

According to a new study led by the University of...

According to the UK <a href="https://www.metoffice.gov.uk/">Met Office</a>, the Northern Lights will be particularly strong around the North Pole on <a href="https://www.earth.com/news/holiday-stress-can-take-away-the-magic-of-the-season/">Christmas</a> Eve. This phenomenon is linked to a solar storm that erupted from the Sun on Monday, December 20, due to a coronal mass ejection (CME) – a powerful eruption of magnetically charged particles and plasma from the Sun’s corona.



The Northern Lights, or Auroras (Aurora borealis at the North Pole, and Aurora australis at the South Pole), have fascinated scientists and stargazers for centuries. They are usually caused by charged particles from solar winds that are colliding with the Earth’s magnetic field and redirected above the poles.&nbsp;



The Earth has an invisible forcefield, the magnetosphere, which protects us from dangerous particles emanating from the Sun. “Whilst it shelters us, it also creates one of the most impressive phenomena on Earth – the Northern Lights,” explained science reporter Marty Jopson.



“When the deadly solar winds meet Earth's magnetosphere, some of the charged particles get trapped, and are propelled down the Earth's magnetic field lines straight towards the poles. And when they reach Earth, they strike atoms and molecules in our atmosphere, releasing energy in the form of light.”&nbsp;



The solar storm that started on Monday is not strong enough to disrupt satellite services and knock out power grids, as some solar storms do. However, it will make the Northern Lights appear much brighter on Christmas Eve.&nbsp;



“The auroral oval is likely to be slightly enhanced at high latitudes from the 22nd to 24th due to coronal hole geomagnetic activity enhancement, and the chance of a weak coronal mass ejection arriving on the 23rd,” the Met Office said.&nbsp;



In Europe, the Northern Lights will be visible from Iceland, Finland and Norway, while in North America they will be best seen in Alaska, and Alberta, Canada.



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

Northern Lights will shine brighter on Christmas Eve

According to the UK Met Office, the Northern Lights will...

Some snakes, <a href="https://www.earth.com/news/lizards-regenerate-perfect-tails-through-stem-cell-therapy/">lizards</a> and even mammals have venomous bites despite these lineages being separated by 300 million years of evolution. Scientists recently traced the origin of a class of these toxins, called kallikrein serine proteases, to a salivary protein found in a common ancestor of venomous snakes and non-venomous mammals.&nbsp;



The research provides strong evidence for the idea that venom evolved from genes with potential for toxicity that existed in the ancestors of both snakes and mammals.&nbsp;



Study co-first author Agneesh Barua is a PhD student at <a href="https://www.oist.jp/">Okinawa Institute of Science and Technology</a> (OIST).



“Venoms are cocktails of toxic proteins that have evolved across the whole animal kingdom, typically as a method of killing or immobilizing prey," said Barua.



"The oral venom systems found in snakes are particularly complex, and the origin of their venoms is still unclear.”



In previous research, Barua and his colleagues found that regulatory genes for saliva glands in mammals and venom glands in snakes are similar in their pattern of activity, suggesting a similar foundation for the two.&nbsp;



“In that paper, we hypothesized that in the ancestor of snakes and mammals, there was a common group of genes that had a toxic potential," said Barua.



"Snakes and mammals then took different evolutionary paths, with snake lineages evolving diverse and increasingly toxic concoctions, while in mammals, venom did evolve, but to a much lesser degree. But what we wanted to know is whether the toxins within mammal and snake venom evolved from a common ancestral gene.”



Early in the research, scientists found that there is a similarity between the biochemistry of Kallikrein serine proteases found in snake venoms and those found in mammal saliva. It was not known, however, whether the two were evolutionarily related. In fact, many serine proteases are similar.&nbsp;&nbsp;



“This is really strong evidence for our hypothesis that venom evolved from a common group of genes in an ancestor that had a toxic potential," said Barua. "But the most surprising thing was that non-toxic salivary kallikreins, like those found in humans and mice, also evolved from the same ancestral gene.”



The results of the study show that the line between venomous and non-venomous mammals is not as clear cut as once thought.&nbsp;



The study is published in the journal <a href="https://bmcbiol.biomedcentral.com/">BMC Biology</a>.



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

A protein in our saliva shares an origin with snake venom

Some snakes, lizards and even mammals have venomous bites despite...

New research led by <a href="https://www.kcl.ac.uk/">King’s College London</a> has found that getting outside and enjoying <a href="https://www.earth.com/news/to-avoid-future-pandemics-we-must-protect-nature/">nature</a> can reduce feelings of loneliness by up to 28 percent in city dwellers. This is the first study about loneliness that uses real time data from a phone app (the <a href="https://www.urbanmind.info/">Urban Mind</a> app) instead of asking participants questions after an event already happened.



Loneliness is considered a major public health problem, increasing the risk of death more than air pollution or obesity. In order to assess how contact with nature could alleviate feelings of loneliness, researchers collected data from 756 participants using the Urban Mind app, which prompted them to regularly answer questions on topics such as loneliness, overcrowding, social inclusion, and the natural environment.



After adjusting for factors such as age, gender, ethnicity, occupation, and education, the scientists found a significant link between lower levels of loneliness and contact with nature. “There can be aspects such as natural features and social inclusivity which can actually decrease loneliness,” said study senior author Andrea Mechelli, a professor of Early Intervention in Mental Health at King’s College London.



According to Mechelli and his colleagues, “people experience different levels of loneliness throughout the day depending on their surrounding environment.”&nbsp;



While feelings of overcrowding increased loneliness by an average of 39 percent, when people were able to see trees or the sky, or heard birdsong, their feelings of loneliness decreased by 28 percent. 



The scientists argue that natural places in cities can reduce loneliness by enhancing feelings of attachment to a place, or by providing more possibilities to socialize.&nbsp;&nbsp;



“It has long been recognized that having access to natural environments can foster social interactions and connectedness. This study adds further weight to existing evidence of our affinity for natural environments and the potential benefits for social wellbeing,” explained Christopher Gidlow, a professor of Applied Health Research at <a href="https://www.staffs.ac.uk/">Staffordshire University</a>.



“Familiarity with environments was not measured, but is likely to be at play as people tend to visit the same natural environments. Such familiarity has been linked with feeling more connected to a place, with possible mental health benefits,” he added.



“Cities are probably the only habitat that is increasing at a high rate. So we should be creating urban habitats where people can thrive,” urged study co-author Johanna Gibbons, a landscape architect. “Nature is a critical component of that because, I believe deep in our souls, there are really deep connections with natural forces.”&nbsp;



The study is published in the journal <a href="https://www.nature.com/articles/s41598-021-03398-2?utm_medium=affiliate&amp;utm_source=commission_junction&amp;utm_campaign=3_nsn6445_deeplink_PID100032693&amp;utm_content=deeplink#Sec14">Nature Scientific Reports</a>.



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

Contact with nature reduces feelings of loneliness

New research led by King’s College London has found that...

Whale,Shark,Eating,At,The,Surface,With,Fish

A new fossil is providing scientists with a better understanding of how Mesozoic ichthyosaurs evolved. Their rapid <a href="https://www.earth.com/news/new-secrets-revealed-about-the-evolution-of-mammal-tusks/">evolution</a>, followed by their abrupt disappearance, is proof that even the most powerful creatures in the world are not safe from the impacts of abrupt environmental change.&nbsp;



Ichthyosaurs appeared slightly earlier than dinosaurs, and went extinct about 25 million years before dinosaurs were wiped out. The giant marine reptiles looked like a dolphin with large teeth.&nbsp;



Whales are now the biggest animals on Earth, but some ichthyosaurs were even larger. In a new study published by <a href="https://www.science.org/">AAAS</a>, researchers describe the discovery of new and exceptionally large ichthyosaur fossils, which hint at an early and rapid burst in the evolution of extreme body size in Mesozoic oceans.&nbsp;



"The notable resemblance in body shape and lifestyle of ichthyosaurs and cetaceans contrasts with their separation in time by nearly 200 million years, providing an often-cited example of convergent evolution," wrote the study authors.&nbsp;



"Ichthyosaurs arose 249 million years ago and populated the oceans for the next 150 million years. Cetaceans did not evolve until about 56 million years ago. As tail-propelled swimmers, ichthyosaurs and cetaceans evolved not only convergent body shapes but also large body sizes."



For whales, it took about 90 percent of their 55-million-year history to evolve into the massive animals they are today. The researchers found that for ichthyosaurs, it took just one percent of their 150 million years to evolve to similar massive sizes.



The results of the study suggest that marine food webs during the Triassic were stable enough during the Triassic to support huge animals, despite the absence of many primary producers following the Permian extinction 252 million years ago.&nbsp;



Led by Martin Sander of The Dinosaur Institute at the Los Angeles Natural History Museum, the research team analyzed the well-preserved, 244-million-year-old remains of a new and very large species of ichthyosaur known as C. youngorum. The fossils were discovered in the mountains of northwestern Nevada.&nbsp;



The length of the skull, which measures nearly two meters, indicates the creature would have been more than 18 meters long. Even more notable is the relatively young age of this particular species. According to the experts, C. youngorum evolved merely 2.5 million years after the appearance of the oldest proposed ichthyosaur relative, which was less than a meter in size, and at most eight million years after the emergence of the group. This suggests that ichthyosaurs experienced a rapid evolution in body size.&nbsp;



In a related Perspective, Lene Delsett and Nicholas Pyenson said : "Ichthyosaur history tells us ocean giants are not guaranteed features of marine ecosystems, which is a valuable lesson for all of us in the Anthropocene. especially if we want to sustain the presence of the surviving ocean giants among us that contribute to our own well-being."



The study is published in the journal <a href="http://www.science.org/doi/10.1126/science.abf5787">Science</a>.



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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

Ocean giants of the past remind us they may not always exist

A new fossil is providing scientists with a better understanding...

A new study from the <a href="https://www.cam.ac.uk/">University of Cambridge</a> reveals that controlled burns in forests, savannahs and grasslands could substantially offset <a href="https://www.earth.com/news/meltwater-influences-carbon-storage-in-the-arctic/">carbon</a> emissions. The experts report that prescribed burning can lock in - or even increase - carbon in the soils of natural environments.



The researchers say their discovery points to a new method of manipulating the world’s natural capacity for carbon capture and storage.



“Using controlled burns in forests to mitigate future wildfire severity is a relatively well-known process. But we’ve found that in ecosystems including temperate forests, savannahs and grasslands, fire can stabilise or even increase soil carbon,” said study first author Dr. Adam Pellegrini.



“Most of the fires in natural ecosystems around the globe are controlled burns, so we should see this as an opportunity. Humans are manipulating a process, so we may as well figure out how to manipulate it to maximize carbon storage in the soil.”



When soil is impacted by fire, carbon is released from plant matter and organic layers stored within. It takes years for this soil carbon to build back up.



According to the researchers, fires can also cause other transformations within soils that can offset these immediate carbon losses, and may stabilize ecosystem carbon.



Carbon is stabilized within the soil in multiple ways. It creates charcoal that is resistant to decomposition, and increases the amount of carbon that is bound tightly to minerals in the soil.



The study suggests that cooler fires can increase the retention of soil carbon through the formation of charcoal and soil clusters that limit decomposition.



“Ecosystems can store huge amounts of carbon when the frequency and intensity of fires is just right. It’s all about the balance of carbon going into soils from dead plant biomass, and carbon going out of soils from decomposition, erosion, and leaching,” said Dr. Pellegrini.



The scientists say that ecosystems can also be managed to increase the amount of carbon stored in their soils. Since carbon is often stored in the roots of plants below the ground, controlled burns can boost the amount of carbon stored by increasing root biomass.



“In considering how ecosystems should be managed to capture and store carbon from the atmosphere, fire is often seen as a bad thing," said Dr. Pellegrini. "We hope this new study will show that when managed properly, fire can also be good - both for maintaining biodiversity and for carbon storage."



The research was funded by the Gatsby Charitable Foundation. The results are published in the journal <a href="https://www.nature.com/ngeo/">Nature Geoscience</a>.



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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

Controlled burns reduce carbon emissions from soil

A new study from the University of Cambridge reveals that...

A recent study published in the journal <a href="https://dx.doi.org/10.1038/s41559-021-01616-8">Nature Ecology &amp; Evolution</a> has found that diverse plant traits, including characteristics such as plant size, structure, and life span, are determined to a large extent by <a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/">climate</a> and soil properties.



The diversity of plant form and function can be described in terms of morphological, physiological, and biochemical characteristics. According to scientists, traits across plant species fall into two main categories: size and economy of metabolism.&nbsp;



By analyzing a global dataset for 17 different plant traits, researchers from <a href="https://www.uzh.ch/en.html">University of Zurich</a>, the <a href="https://www.bgc-jena.mpg.de/">Max Planck Institute for Biogeochemistry</a> in Jena and the <a href="https://www.uni-leipzig.de/en/">University of Leipzig</a>, have confirmed for the first time that these two main categories apply to all plants studied worldwide.



In the size category, plants continuously balance height, leaf size, seed size and similar traits, which are influenced by hydraulic components of water transport. The economics of metabolism category describes how rapidly and effectively plants gain energy and biomass through photosynthesis, in correlation with how long the plants survive. Metabolism can be determined by features such as the structure and composition of leaves, including the concentrations of chemical compounds like nitrogen, phosphorous, or carbon.



Plant traits are influenced by a variety of external factors. By analyzing the characteristics of over 20,000 species of plants, the researchers found that the most decisive factors in shaping these traits are climate and oil conditions.



"Our study clearly demonstrates that plant traits worldwide can be explained by joint effects of climate and soil," said study lead autor Julia Joswig, a doctoral student in Geography and Spatial Genetics at the University of Zurich. “This suggests that aspects of climate change and soil erosion, both of which occur as a result of land use change, for example, should be researched together."



For example, the height of plant species changes along latitudes, due to differences in climate, and both morphological and metabolic processes are strongly influenced by soil-forming factors including organisms living in the soil, geography, and topography.&nbsp;



According to study co-author Miguel Mahecha, a professor of Earth Sciences at the University of Leipzig, "studies of this kind can guide global Earth system models to represent the complex interaction of climate, soil, and biodiversity, which is an important prerequisite for future predictions."



---



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

Plant traits are shaped by climate and soil conditions

A recent study published in the journal Nature Ecology &amp;...

Water,Spring,On,Alps,Mountains,Background.

Although mountain spring water is often claimed to be the cleanest water to drink, a new study led by the <a href="https://www.uga.edu/">University of Georgia</a> has revealed that this is often not the case. By using data from the Southern Appalachian Mountains that has been collected over 40 years, the scientists found that water quality in high-elevation streams has been negatively affected by sediment caused by <a href="https://www.earth.com/news/deforestation-in-the-amazon-rainforest-hits-new-records/">deforestation</a>, constructions, and agricultural runoff.



"We had access to studies from 1976 to last year that encompassed both stream and terrestrial studies," said study lead author Rhett Jackson, a professor at University of Georgia's <a href="https://www.warnell.uga.edu/">Warnell School of Forestry and Natural Resources</a>. "Some streams in Macon County have very high sediment concentrations, four times greater than found in forested streams."&nbsp;



When streams carry such a large amount of sediment, it is more difficult for animals to find food in the water, and it also affects fish growth and disease resistance. Moreover, if sediment flows downstream and reaches public water supplies, cities and towns will need to invest more money in order to filter the water.



According to Professor Jackson, Appalachian water quality issues began over a century ago, with the arrival of European settlers. "The landscape you see now isn't what it was like in 1900 - the early settlers logged everything," he explained. While for generations, native Cherokee Indians left the hillside forests untouched, the settlers cut the forests and tried to farm the hills, causing soil erosion and sediment movement into the streams.



More recently, building houses on mountain ridges and unpaved roads to reach them created even more land disturbance. "Roadside ditches and unpaved roads produce a lot of sediment, and their sediment production increases as roads get steeper and as gravel roads get more use," Jackson said.



Finally, farming practices are also negatively impacting the water quality of streams. Since farmers use increasingly larger amounts of fertilizers, much of the stream water contains high concentration of nutrients, such as nitrate.



“Because the water in streams comes from the whole landscape, everything we see on the land has some effect on streams.&nbsp;But streams are resilient, and as long as we intelligently modify our actions a little bit, we can farm and live near streams while protecting their water quality. Maintaining the quality of our landscape requires a little thought and work on our parts,” Jackson concluded.



The study is published in the journal <a href="http://dx.doi.org/10.1093/biosci/biab098">BioScience</a>.



---



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

Mountain streams are not as clean as previously thought

Although mountain spring water is often claimed to be the...

Dog,In,Clothes.,Golden,Retriever,In,Round,Glasses,And,A

A new study published in the journal <a href="https://royalsocietypublishing.org/doi/10.1098/rsbl.2021.0465">Biology Letters</a> has found that dogs have a sense of the way objects should behave. A research team from the <a href="https://www.vetmeduni.ac.at/">University of Veterinary Medicine</a> discovered that when watching 3D animations of objects breaking Newton’s basic laws of physics, dogs’ pupils dilated and their attention increased. According to the scientists, this shows that dogs are sensitive to the principle of “contact causality,” one of the fundamental principles allowing us to make sense of our physical environment.



The animations the dogs watched involved balls on a computer screen that bounced in various ways. Some of them bounced without an external force being applied, thus without contact causality. The researchers found that dogs spent more time with wide open pupils if balls where rolling on their own, suggesting that they may have been surprised when the objects defied the laws of physics.



According to study lead author Christoph Völter, an expert in Comparative Cognition at the University of Veterinary Medicine, having a basic sense of physical causality is “the starting point of learning.”



“You have expectations about the environment – regularities in your environment that are connected to physics – and then something happens that doesn't fit. And now you pay attention. And now you try to see what's going on,” he explained.&nbsp;This capacity appears to develop in humans and chimpanzees around six months of age.



However, scientists stress the fact that these results do not show that dogs have an understanding of physics: they only have an implicit understanding of the physical <a href="https://www.earth.com/news/eating-less-meat-is-better-for-animal-welfare-and-environmental-health/">environment</a>. 



“This is sort of (an) intuitive understanding expectation,” Völter said. “But that's also the case for humans, right? The infant at seven months of age has expectations about the environment and detects if these expectations are violated. I think they build up on these expectations, and build a richer understanding of their environment based on these expectations.”



Further research is needed to clarify at what age dogs begin to have this intuitive understanding, and what factors (such as age, breed etc.) may influence how their implicit expectations about object interactions involving contact causality are structured.



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

Dogs have an intuitive understanding of physics

A new study published in the journal Biology Letters has...

Matterhorn

The Matterhorn appears to be a massive, immovable mountain towering over the landscape near Zermatt, Switzerland for millennia. However, new research led by the <a href="https://www.wsl.ch/en/about-wsl/locations/slf-davos.html">WSL Institute for Snow and Avalanche Research SLF</a> in Switzerland shows that this impression is wrong and that the Matterhorn is in fact constantly in motion, swaying gently back and forth approximately every two seconds. This subtle vibration with imperceptible amplitudes is caused by seismic energy in the Earth originated from <a href="https://www.earth.com/news/marine-heatwaves-reduce-the-oceans-ability-to-absorb-carbon/">oceans</a>, earthquakes, and human activity.



Each object, including mountains, high-rise buildings, or bridges, vibrate at certain frequencies when affected by seismic energy. These natural frequencies depend on the geometry and material properties of the object. &nbsp;“We wanted to know whether such resonant vibrations can also be detected on a large mountain like the Matterhorn,” said study lead author Samuel Weber, a researcher at the WSL Institute.



Dr. Weber and his colleagues installed several seismometers on the Matterhorn, including one just below the summit, at 14,665 feet above sea level, and recorded all movements of the mountain at a high resolution in order to derive the frequency and direction of resonance.&nbsp;



They found that the Matterhorn oscillates in a north-south direction at a frequency of 0.42 Hertz, and in an east-west direction at a similar frequency. Compared to the reference station at the foot of the mountain, the measured movements on the summit were up to 14 times stronger. This phenomenon is due to the fact that the summit moves freely, while the base of the mountain is fixed, like a tree swaying in the wind.



The researchers warn that such movements can intensify during earthquakes and potentially cause damage. “Areas of the mountain experiencing amplified ground motion are likely to be more prone to landslides, rockfall, and rock damage when shaken by a strong earthquake,” said study co-author Jeffrey Moore, an assistant professor of Geology and Geophysics at the <a href="https://www.utah.edu/">University of Utah</a>.



Such vibrations are not a peculiarity of this specific mountain. Other peaks, such as the Grosse Mythen, which is significantly smaller than Matterhorn, vibrate in a similar manner. In fact, since it is smaller, the Grosse Mythen vibrates at a frequency four times higher than Matterhorn.



Until now, Matterhorn is the largest mountain shown to vibrate. “It was exciting to see that our simulation approach also works for a large mountain like the Matterhorn and that the results were confirmed by measurement data,” concluded Professor Moore.&nbsp;



The study is published in the journal <a href="https://www.sciencedirect.com/science/article/pii/S0012821X21005513?via%3Dihub#!">Earth and Planetary Science Letters</a>.



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

Matterhorn mountain sways due to seismic energy

The Matterhorn appears to be a massive, immovable mountain towering...

In a new study from the <a href="https://www.ucsc.edu/">University of California Santa Cruz</a>, the researchers found that mother elephant seals can recognize their pup's voice at just two days old. The experts said this helps mothers and <a href="https://www.earth.com/news/babies-develop-preferences-based-on-random-choices/">babies</a> survive during a precarious time.&nbsp;



An international team of scientists led by Dr. Juliette Linossier recorded calls of elephant pups using a microphone on the end of a long pole. The recordings were played to mother elephant seals as their responses were monitored. The moms were played calls from their own babies, as well as calls from a pup of a similar age.



The study revealed that the mothers were much more interested in the speaker and moved toward it when it was playing calls from their own pup.



"This is a rare demonstration of individual recognition among phocid mothers and their offspring, and suggests that consistency in maternal responsiveness may be an important social factor influencing the pup's growth and survival," wrote the study authors.



While feeding newborn elephant seals, the mothers lose about half of their body mass. Meanwhile, the pups gain about seven times their initial weight. This substantial weight gain can be attributed to the "exceptional fat content" of the mother's milk.



While the early recognition is necessary for survival, the researchers could not explain why female seals are often observed feeding each other's pups.&nbsp;&nbsp;



"Females fast for the entire month they are nursing," study co-author Dr Caroline Casey told BBC. "So it makes no (evolutionary) sense for them to use their resources on another mother's pup."



"But at this site (a colony in California) that we study, there have been a lot of observations of females feeding pups not related to them."



According to Dr. Casey, it is possible that humans are to blame. She noted that elephant seals were hunted to near extinction during the late 1800s. As a result, the tens of thousands of elephant seals that are alive today can be traced back to just a couple dozen seals that historically survived. 



This phenomenon would make the elephant seals genetically similar, which may explain why mothers would feed other pups if the their moms are closely-related females. 



Going forward, the researchers want to investigate whether the seals are more likely to feed the pups of their sisters or cousins.&nbsp;



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



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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

Elephants seals recognize pup's voice at two days old

In a new study from the University of California Santa...

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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



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

Flu viruses are more flexible than expected

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

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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



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

Detecting mercury contamination with the tap of a finger

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

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Kainji Lake, a reservoir on the Niger River.



In 1968, Kainji Lake was created by the construction of the Kainji Dam. The Niger River, the third longest in Africa, enters the lake in the north.&nbsp;



According to <a href="https://www.earth.com/news/rivers-in-the-american-west-are-a-lifesaving-resource-for-birds/">ESA</a>, the creation of the lake submerged Foge Island and the town of Bussa and permanently flooded other riverine settlements, leaving around 50,000 people displaced.&nbsp;



Large parts of Foge Island are temporarily exposed during low water tides, and the land is often used by migrating fishermen. Kainji Dam is a dam across the Niger River in Niger State of Central Nigeria. 



Wild mammals occur at relatively low densities due to illegal hunting. Lake Kainji has suffered a dramatic decline as a fishery due to the high numbers of artisanal and subsistence fisherfolk using the lake. It has been suggested that a period of closure, together with controlled fishing rights may help improve fish stocks.



Kainji Lake National Park is the oldest of its kind in Nigeria. The park contains three distinct areas: a part of the Kainji Lake, the Borgu Game Reserve to the west of the lake, and the Zugurma Game Reserve to the southeast. The park is home to around 65 mammal species, 350 bird species, and 30 species of reptiles and amphibians. 



Video/ Image Credit: European Space Agency&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.

Kainji Lake in north central Nigeria

[sendtonews key="iuA5mpp3jv-1641775-12187" type="single"] Today’s Video of the Day from the...

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Today’s Video of the Day from <a href="https://www.igb.illinois.edu/">Carl R. Woese Institute for Genomic Biology</a> reveals how scientists can modify common crops like soybean, rice, and wheat to protect them from heat stress.



“We need to double crop production by 2050 to feed a growing global population, and not only are we not on track to do that, but climate change is further complicating things,” said Amanda Cavanagh, a lecturer at the University of Essex. 



The study is part of Realizing Increased Photosynthetic Efficiency (RIPE), an international research project that aims to develop food crops that turn the sun’s energy into food more efficiently.



“Using an engineering approach we designed multiple alternative metabolic pathways to photorespiration. Testing them in the field showed increases in productivity which led Amanda to significantly move the project forward by showing our engineered plants can withstand pretty extreme temperature stress,” said study co-author and RIPE researcher Paul South.&nbsp;



“As the climate changes and temperature stresses increase the pressure on our global food supply, farmers will need every tool available including engineering approaches like the synthetic biology used here to maintain safe and productive harvests.”



The experts tested plants modified to have more efficient photorespiration to see if they were better adapted to warmer temperatures.&nbsp;



The team found that the engineered plants produced 26 percent more biomass than the wild-type plants exposed to the same temperatures, and had 15 percent less yield loss under the higher temperatures.



Video Credit: Amanda Nguyen/University of Illinois



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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.

Designing crops that can beat the heat

[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"] Today’s Video of the Day from Carl...

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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



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

How does salt makes things taste better?

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

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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



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

Santiago, Chile in South America

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

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

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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



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

Interactive map of the universe includes 200,000 galaxies

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

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



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.

Remote sensing will revolutionize the way we monitor trees

[sendtonews key="EjmSP20gQK-2593093-12187" type="single"] Today's Video of the Day from NASA...

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



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



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



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



Video Credit: ESA&nbsp;



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



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

The city of Dublin on Ireland's east coast

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



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



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



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



Video/ Image Credit: ESA



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



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

The province of Zaragoza in northeast Spain

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

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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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.

Wetlands are a major source of methane emissions

[sendtonews key="f8fukm28Vz-2491833-12187" type="single"] Today's Video of the Day from NASA...

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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



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

The rapid retreat of the Columbia Glacier

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

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



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



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



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



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



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



Video &amp; Image Credit: ESA



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



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

The Pyrenees Mountains in southwest Europe

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

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Today’s Video of the Day from <a href="https://www.stowers.org/">Stowers Institute for Medical Research</a> describes why experts are studying zebrafish to gain a better understanding of how the immune system responds to injury. Zebrafish have the ability to repair and regenerate organs.



“Organ regeneration offers an exciting opportunity for studying the immune system and to inquire why some species can regenerate organs like the heart or missing limbs while others like humans cannot,” explained Dr. Tatjana Piotrowski.



Zebrafish sensory organ hair cells are an ideal system to investigate the pathways and cell types involved in regeneration since they are easily destroyed with antibiotics and begin regenerating within five hours. This enabled the researchers to identify the exact timing and genetic programs for each anti-inflammatory macrophage activation state.&nbsp;



“Our hypothesis is that human macrophages do not receive the proper chemical activation 'cocktail' to instruct pro-regenerative processes,” said Dr. Nicolas Denans. “Identifying the molecular recipe of macrophage activation in zebrafish may one day enable us to design regenerative immunotherapies in humans.”&nbsp;&nbsp;&nbsp;



“The new evidence is a valuable resource for comparative studies on the genetic programs involved in macrophage-mediated repair and regeneration. In other words, different types of injuries may induce different kinds of inflammatory responses. We want to decipher whether this 'language' is universal or if there are a variety of dialects."



Video Credit: Stowers Institute for Medical Research&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.

How the immune system responds to injury

[sendtonews key="0dEcERCq61-2283382-12187" type="single"] Today’s Video of the Day from Stowers...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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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.

2022 illustrated the consequences of a warming climate

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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"

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

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

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



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



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



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



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



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



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



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

Tiger sharks are shifting poleward as temperatures rise

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