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 forecasting tool will let scientists know which cities are at risk of flooding as glacial land ice melts. Developed by scientists at <a href="https://www.jpl.nasa.gov/">NASA's Jet Propulsion Laboratory</a> in California, the model also gives experts insight into which ice sheets are of the most concern.

The tool, which predicts how water will be “redistributed" as land ice melts, can inform cities of which particular <a href="https://www.earth.com/news/iceberg-a-68/">ice sheets</a>, ice caps, and glaciers will impact sea level rise in their region.

Dr. Eric Larour, who has worked in the Jet Propulsion Laboratory since 2005, is the project’s lead developer. 

Dr. Larour told <a href="http://www.bbc.com/news">BBC News</a>, "We can compute the exact sensitivity - for a specific town - of a sea level to every ice mass in the world. This gives you an idea, for your own city, of which glaciers, ice sheets and ice caps are of specific importance."

Dr. Larour explained that the tool diagnoses the sea level rise by examining its three major contributors, the first of which is gravity. 

Dr. Larour said that ice sheets “are huge masses that exert an attraction on the ocean. When the ice shrinks, that attraction diminishes- and the sea will move away from that mass." In addition, land that has been compressed underneath the weight of the ice expands vertically.

The third major influence on the pattern of sea level change is the Earth’s rotation.

"You can think of the Earth as a spinning top," said Dr Larour. "As it spins it wobbles and as masses on its surface change, that wobble also changes. That, in turn, redistributes water around the Earth."

The researchers found that sea level rise caused by changes in the northern and eastern regions of the Greenland ice sheet will directly impact New York, while London may be significantly affected by the ice sheet’s northwestern region. Sea level pattern changes in Sidney will be heavily influenced by melting ice sheets along the northeast and northwest coastline of Antarctica, according to the study.

"As cities and countries attempt to build plans to mitigate flooding, they have to be thinking about 100 years in the future and they want to assess risk in the same way that insurance companies do,” said senior scientist Dr. Erik Ivins.

The findings of the study are published in <a href="http://advances.sciencemag.org/?utm_source=gophotonics">Science Advances</a>.

--

By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

New tool predicts which cities are at risk as sea levels rise

A new forecasting tool will let scientists know which cities...

It can be very challenging to make important decisions based on cost versus benefit, and neuroscientists at the <a href="http://web.mit.edu/">Massachusetts Institute of Technology</a> have determined that this type of conflict is drastically affected by chronic stress. When mice were faced with a cost-benefit analysis, stress caused them to make the most high-risk decisions available.

"One exciting thing is that by doing this very basic science, we found a microcircuit of neurons in the striatum that we could manipulate to reverse the effects of stress on this type of decision making,” said study senior author Ann Graybiel. “This to us is extremely promising, but we are aware that so far these experiments are in rats and mice." 

The research team had first identified the brain circuit involved in decision making that involves cost-benefit conflict in 2015. In that study, the researchers found that they could suppress the circuit and alter the rodents' preference for lower-risk, lower-payoff choices to a preference for higher risks and higher payoffs.

In the current study, the researchers exposed the mice to a short period of stress every day for two weeks. Before experiencing stress, the rodents would choose to run toward the region of the maze which had dimmer light and weaker chocolate milk about half the time. The researchers gradually increased the concentration of chocolate milk found in the dimmer side and the animals began choosing that side more frequently.

However, when chronically stressed rodents were put in the same situation, they continued to choose the side of the maze with bright light and better chocolate milk, even as the chocolate milk concentration increased on the other side. This was the same behavior the researchers witnessed in their previous study when they disrupted specific decision-making circuitry.

"Somehow this prior exposure to chronic stress controls the integration of good and bad," said Graybiel. "It's as though the animals had lost their ability to balance excitation and inhibition in order to settle on reasonable behavior."

The researchers found that after this stress-induced change takes place, it remains in effect for months. However, they were able to develop a way to restore normal decision making in the stressed mice, which demonstrates that the brain circuitry involved in cost-benefit decision making remains intact following chronic <a href="https://www.earth.com/news/watching-sports-heart-stress/">stress</a>. 

The findings of the study, which are published in <a href="http://www.cell.com/">The Cell</a>, suggest that the key brain circuitry identified by the researchers may be susceptible to guidance that could restore normal behavior in humans who have disorders which cause atypical decision making.

--

By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Stress causes the brain to make risky decisions

It can be very challenging to make important decisions based...

Anyone who lives near any of the five Great Lakes might be familiar with the term “lake-effect snowstorm,” a special kind of blizzard that can batter residents with whiteout conditions and heavy snowfall. 

Now, new research from the <a href="https://www.nsf.gov/">National Science Foundation</a> (NSF) has found that the shape of Lake Ontario increases the severity of lake-effect snowstorms.

The research was conducted by a team of scientists who monitored lake-effect storms in rural Tug Hill, a region in upstate New York close to Lake Ontario that gets around 20 feet of snow a year. 

Lake-effect snow is caused by air circulation, moisture, and the temperature of the lake. When cold air moves over relatively warm water, the moisture from the lake intensifies the <a href="https://www.earth.com/news/accurately-measure-snowfall-new/">snowstorm</a>. 

Researchers who studied Tug Hill found that the specific shape of the Lake Ontario’s shoreline is a factor in how and where the cold air circulates over the lake. 

The research was part of a project called Winter Lake-Effect Systems and was funded by the <a href="https://www.nsf.gov/">National Science Foundation</a>.  

"Lake Ontario's east-west orientation allows intense bands of snow to form," explained Ed Bensman, program director at the NSF Division of Atmospheric and Geospace Sciences. "This study found that the shape of the lake's shoreline can have an important influence on the low-level winds that lead to bands of snow for long periods of time -- and to heavy snow totals. The research team analyzed the strength of these snow bands, and their formation and persistence. Snow bands were often active for several days."

The researchers hope their findings can help better inform weather forecasts for those areas most affected by lake-effect storms. 

“If we want to pinpoint where the lake-effect is going to be, we're going to have to do a very good job of simulating what's happening along these coastal areas,” said Jim Steenburgh, another member of the research team.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

The shape of Lake Ontario makes snowstorms worse

Anyone who lives near any of the five Great Lakes...

“Video games won’t get you anywhere!” How many times have kids been told that by their parents? But according to new research from scientists at the <a href="https://www.york.ac.uk/">University of York</a>, video game skill may show a direct correlation to higher intelligence. 

While the researchers make it clear that their findings do not indicate that playing computer games will make a young person smarter, they do indicate that individuals who are more skilled at these games tend to be smarter.

The study focused on “Multiplayer Online Battle Arenas” (MOBAs), which are action strategy games that usually involve two teams of five individuals competing against each other. They also looked a multiplayer “First Person Shooter” (FPS) games, which is one of the most popular game genres today.

The researchers first study analyzed the correlation between performance in the game League of Legends and an individual’s performance in paper-and-pencil intelligence tests. Their second study looked at large datasets from two MOBA games (League of Legends and Defense of the Ancients) and two FPS games (Destiny and Battlefield 3). 

In their second study, the scientists found that for large groups of thousands of players in MOBAs, their performance in the game and IQ behaved in similar ways as player got older. However, for FPS games they found the opposite effect, where performance actually declined after players’ teen years. Athanasios Kokkinakis, a PhD student at York and lead author of the study, elaborates on this, “unlike First Person Shooter (FPS) games where speed and target accuracy are a priority, Multiplayer Online Battle Arenas rely more on memory and the ability to make strategic decisions taking into account multiple factors. It is perhaps for these reasons that we found a strong correlation between skill and intelligence in MOBAs.”

Professor Alex Wade of the University of York – a corresponding author on the paper – says that MOBA games “are complex, socially-interactive and intellectually demanding. Our research would suggest that your performance in these games can be a measure of intelligence.” Wade continues, “Research in the past has pointed to the fact that people who are good at strategy games such as chess tend to score highly at IQ tests. Our research has extended this to games that millions of people across the planet play every day.”

The researchers believe that their findings have the potential to have a big impact on the future of video games and the creative industry, as these games may be able to extend as a tool for research in mental health and psychology. They could also be used as “proxy” tests of IQ, as well as a way to monitor <a href="https://www.earth.com/news/ways-keep-brain-healthy/">cognitive health</a> across populations.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Good news for gamers! Video game skill linked to intelligence

“Video games won’t get you anywhere!” How many times have...

The fact that heated liquids freeze faster than cold liquids is known as the Mpemba effect, which was observed as far back as the 4th century AD by Aristotle. Researchers from <a href="https://www.uc3m.es/">Universidad Carlos III De Madrid </a>(UC3M) are demonstrating how this phenomenon occurs in granular fluids.

Study co-author Antonio Lasanta is from the UC3M <a href="https://www.uc3m.es/ss/Satellite/UC3MInstitucional/en/Detalle/Organismo_C/1381812372440/1371206581851/_Gregorio_Millan_Barbany__University_Institute_for_Modelling_and_Simulation_in_Fluodynamics">Gregorio Millán Barbany University Institute for Modeling and Simulation on Fluid Dynamics, Nanoscience and Industrial Mathematics</a>. 

“We can simulate on a computer and make analytical calculations to know how and when the Mpemba effect will occur," said Lasanta."In fact, we find not only that the hottest can cool faster but also the opposite effect: the coldest can heat faster, which would be called the inverse Mpemba effect."

In 1960, a Tanzanian student named Erasto Mpemba explained to his teacher that the hotter mixture of ice cream froze faster than the cold one. This inspired a technical document on the subject, and frequent analysis of the effect began. 

Regardless of the widespread interest, there have been conflicting explanations on exactly what that the Mpemba effect is and under what circumstances it happens.

"It is an effect that, historically, has not been addressed in a rigorous manner but merely as an anomaly and a didactic curiosity," said co-author Antonio Prados."From our perspective, it was important to study it in a system with the minimum ingredients to be able to control and understand its behavior." 

This approach led the researchers to their own theory of what conditions cause the Mpemba effect to occur.

"The scenario that the effect will most easily occur in is when the velocities of the particles before heating or cooling have a specific disposition--for example, with a high dispersion around the mean value," said researcher Francisco Vega. 

This means that the <a href="https://www.earth.com/news/temperatures-rise-mortality-rates/">temperature</a> of the fluid can evolve more rapidly if the state of the particles is prepared before the cooling.

The research team is planning to carry out experiments to confirm their theory. According to the scientists, learning more about this effect may lead to useful applications in everyday life. The findings of the study are published in <a href="https://journals.aps.org/prl/">Physical Review Letters</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Why hot water freezes faster than cold water

The fact that heated liquids freeze faster than cold liquids...

Remains buried in a chest 1,000 years ago are believed to be those of one of the most influential spiritual teachers of all time. An inscription on the box says that the human remains belong to Buddha, the enlightened one.

2,000 pieces of cremated bones were found inside of a ceramic box in Jingchuan County, <a href="https://www.earth.com/news/sulfur-dioxide-emissions-china/">China</a>, surrounded by 260 Buddhist statues. The chest had been buried by two monks, Yunjiang and Zhiming, who belonged to the Mañjuśrī Temple of the Longxing Monastery.

A team of archaeologists led by Hong Wu, a researcher at the <a href="http://www.tobunken.go.jp/materials/ekatudo/217653.html">Gansu Provincial Institute of Cultural Relics and Archaeology</a>, translated an inscription found on the box. According to the inscription, the monks collected the relics of Buddha for 20 years in order to promote Buddhism, and buried them in the hall of the temple. 

The inscription explains how the monks collected Buddha's relics, or śarīra: "Sometimes they received the śarīra from others' donations; sometimes they found them by chance; sometimes they bought them from other places; and sometimes others gave them the śarīra to demonstrate their wholeheartedness."

The chest was discovered around five years ago by workers who were repairing the road near the temple. Among the hundreds of remains are bones and teeth. The inscription does not mention the 260 statues found buried near the box, and it is unclear if they were buried there at the same time.

Siddhartha Gautama was born in modern day Nepal and traveled through Eastern India sometime between the 6th and 4th centuries BC. His philosophy and teachings formed the foundation of the Buddhist religion, and he became known as Gautama Buddha or simply Buddha.

Siddhartha was said to have left behind a royal inheritance to go on a religious quest.Once he found that various teachings were too extreme for him, Siddhartha was determined to find a middle way. Legend has it that Siddhartha sat under a pipal tree and vowed not to move until he found the truth. After 49 days, at age 35, he attained enlightenment.

Siddhartha died around 2,500 years ago at the age of 80. His cremated remains were divided among his disciples and royalty, and were spread far and wide.

The details of the discovery in Jingchuan County have recently been reported in English by the journal <a href="http://www.eastviewpress.com/Journals/CulturalRelics.aspx">Chinese Cultural Relics</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Photo Credit: Chinese Cultural Relics

Cremated remains found in China may have belonged to Buddha

Remains buried in a chest 1,000 years ago are believed...

People who are more in touch with their own heartbeat may actually be more charitable, according to a new study. 

The research, conducted by scientists from <a href="http://www.anglia.ac.uk/">Anglia Ruskin University</a> and <a href="http://www.su.se/english/">Stockholm University</a>, is the first to attempt to find a physiological connection to charitable giving and altruistic behavior. 

“Despite clear biological and economic advantages of acting in self-interest, people consistently make decisions that benefit others, at a cost to themselves,” said Dr. Richard Piech, a co-author of the study. “Our study suggests that selfless acts may be influenced by signals from the body that reach the brain.”

The researchers set out to see if a physical response could explain why some people are naturally more <a href="https://www.earth.com/news/female-brain-wired-generous/">giving</a> than others. 

For the study, a group of participants was asked to play a computer game where they were continually asked to share sums of money between themselves and someone they hadn’t met before.

At the end of the game, the participants were given real money, but the amounts depended on how much they had given and received by other players. 

The researchers also had the participants complete a task where they had their heartbeat recorded and were then asked to listen to a series of sounds that were either in time or out of sync with their recorded heartbeats. 

The participants that could judge the sounds that were in beat with their own heart were found to be more generous during the giving game. 

The results found that the participant's generosity was directly related to how in tune they were with their heartbeat. 

The researchers note that further research will need to be done to determine exactly why being in touch with your heartbeat may determine your generosity, but the study shows a clear link between the two.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

People who are in touch with their heartbeats are more generous

People who are more in touch with their own heartbeat...

For almost eight years, scientists have been studying footprints left behind by a gigantic dinosaur in the mountains of France. The animal responsible for the prints, which make up the world's largest fossilized track, has been named Thunderfoot.

The huge <a href="https://www.earth.com/news/asteroid-dinosaurs/">dinosaur</a> footprints were ultimately found to extend over 500 feet through the French village of Plagne in the Jura Mountains.

20 prints were first discovered in 2009 by two scientists from the <a href="http://www.geologypage.com/2017/11/worlds-largest-dinosaur-tracks-discovered-jura-mountains.html">Oyonnax Naturalists' Society</a>. Digs at the site unearthed more footprints, and the track was found to contain 110 massive imprints.

The depth and length of the 150-million-year-old tracks exposed the size of the dinosaur, which was as long as three buses. The experts determined that the Sauropod weighed at least 38.5 tons and was 114 feet long.

The footprints featured five elliptical toe marks, while the handprints showed five circular finger marks arranged in the shape of a crescent.

The details of the study have been released to the public by the <a href="http://lgltpe.ens-lyon.fr/">Laboratoire de Geologie de Lyon</a>. The massive animal was named after the French village where it was discovered. The dinosaur’s scientific name is Brontopodus plagenensis, which means ‘Thunderfoot from Plagne.”

The research institution responsible for the excavation of the Plagne site is the <a href="http://www.cnrs.fr/">Centre national de la recherche scientifique</a>, or CNRS. 

A representative of CNRS said in a statement, “Dating of the limestone layers reveals that the trackway was formed 150 million years ago, during the Early Tithonian Age of the Jurassic Period. At that time, the Plagne site lay on a vast carbonate platform bathed in a warm, shallow sea.”

“The presence of large dinosaurs indicates the region must have been studded with many islands that offered enough vegetation to sustain the animals. Land bridges emerged when the sea level lowered, connecting the islands and allowing the giant vertebrates to migrate from dry land in the Rhenish Massif.”

The Jurassic Period was named after the Jura Mountains because rocks from this time period were found there. The dinosaurs are thought to have left their tracks in the mud, which dried before becoming covered with the water and sediment that preserved them.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer
Photo Credit: P. Dumas

Dinosaur who left longest footprint trail named Thunderfoot

For almost eight years, scientists have been studying footprints left...

Many studies have proven that negative emotions affect sleep. As we recently reported, <a href="https://www.earth.com/news/bed-angry-bad-health/">going to bed angry</a> makes it harder to relax into sleep and can affect overall health and wellbeing. 

Now, a new study has found that going to bed angry or dwelling on negative memories will make it easier to recall and linger on those experiences later on.

The brain, as it turns out, is programmed to dwell on negative memories and strengthens them while we sleep. Emotions are also a prominent factor in how we recall memories, the stronger the emotion, the better our ability to remember the experience. 

The study was conducted by researchers from the<a href="http://www.bidmc.org/"> Beth Israel Deaconess Medical Centre</a> in Boston. For the study, the researchers had 57 participants view a series of images in each eye. 

The images were either upsetting or neutral, and the research team was able to visually track the different parts of the brain that processed each image. After that, half of the participants went to sleep and the other stayed awake. 

Twelve hours later, researchers asked the participants to remember the images. Those who had gone to sleep were able to remember a higher number of negative images than those who stayed awake. 

The results show that going to bed after experiencing something emotionally upsetting will only strengthen that memory and our ability to recall it later on. 

“This would provide an explanation of how sleep selectively stabilizes emotional memories,” Roy Cox, the study's lead author, told the <a href="https://www.thetimes.co.uk/article/brain-dwells-on-negative-memories-while-we-sleep-w5bxknkf7">Times</a>. 

A previous 2015 study, which also showed similar results, focused on how emotions play an essential role in memory recall. Strong emotions can make both negative and positive memories more vivid. 

Going to sleep angry or dwelling on something embarrassing or upsetting that happened that day isn’t just bad for your sleep, it also means that you will be able to clearly recall that event in the future 

--

By<a href="mailto:kayvandette@gmail.com"> Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com </a>Staff Writer

The brain strengthens bad memories as we sleep

Many studies have proven that negative emotions affect sleep. As...

As the command center of our body, the <a href="https://www.earth.com/news/poor-sleep-effects-brain/">brain</a> is one of the more intriguing areas of scientific study. One of the major questions scientists have had for a long time is how the brain can continue to learn new skills without needing to grow in size or volume throughout an individual’s lifetime.

A recent study has shown that the number of brain cells – like neurons and glial cells – increases initially as we learn. But ultimately, our brain gets rid of many cells or assigns them to other roles.

“Brain matter volume increases in the initial stages of learning, and then renormalizes partially or completely," says Elisabeth Wenger, lead author of the paper and a neuroscientist at the <a href="https://www.mpib-berlin.mpg.de/en">Max Planck Institute for Human Development</a> in Berlin. “This seems to be an effective way for the brain to first explore the possibilities, call in different structures and cell types, select the best ones, and get rid of the ones that are no longer needed.”

The study analyzed right-handed individuals who were learning how to write and draw with their left hands. Results showed that after a month, their brain volume increased, but three weeks later it returned almost back to normal. Other studies were also analyzed in which monkeys learned to use a rake to retrieve food and rats learned to differentiate between sounds – these studies had similar results.

“We are definitely not the first to suggest or introduce the expansion-renormalization model,” says Wenger. “I think we are just the ones who are now promoting it in the field of grey matter volume changes in humans.” The researchers think that this theory may be able to influence how future research designs neural studies. 

“In a way, it is now apparent that the typical design is just insufficient to show the full scope of changes that happen,” Wenger says. “This theory calls for study designs with more measurement time points to properly display changes in brain volume.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Our brains grow as we learn, and then make cuts

As the command center of our body, the brain is...

Geoengineering is the large-scale manipulation of Earth's climate in an attempt to offset the effects of <a href="https://www.earth.com/news/toxic-mercury-arctic-soil/">global warming</a>. Scientists are now warning that proposed geoengineering methods could have a devastating effect on some regions of the globe, particularly those prone to bad storms or prolonged drought.

Climate experts from the <a href="https://www.exeter.ac.uk/">University of Exeter</a> have determined that conducting geoengineering in one hemisphere would likely have a damaging impact on the other.

For example, introducing aerosols artificially into the atmosphere in the northern hemisphere would reduce tropical cyclone activity which kicks up extreme events such as Hurricane Katrina. But, at the same time, this would lead to increased likelihood for drought in a region of Africa south of the Sahara known as Sahel.

As a result of their findings, the research team is asking policymakers worldwide to strictly regulate any geoengineering programs in the future to prevent causing natural disasters in other parts of the world.

Dr. Anthony Jones is a climate expert from the University of Exeter and the lead author of the study.

"Our results confirm that regional solar geoengineering is a highly risky strategy which could simultaneously benefit one region to the detriment of another,” said Dr. Jones. “It is vital that policymakers take solar geoengineering seriously and act swiftly to install effective regulation."

The researchers focused their investigation on the impact that releasing aerosols into the atmosphere would have on the frequency of tropical cyclones.

This controversial geoengineering approach, known as stratospheric aerosol injection, was designed to cool the Earth's surface by reflecting some sunlight before it reaches the surface. The process mimics the conditions that occur naturally after volcanic eruptions when aerosols are injected into the atmosphere.

For their study, the researchers used computer simulations to closely examine the effect of hemispheric stratospheric aerosol injection on tropical cyclone frequency in the North Atlantic. The projections revealed that releasing aerosols in the northern hemisphere would decrease North Atlantic tropical cyclone frequency, while injections contained to the southern hemisphere may potentially enhance it.

"This research shows how a global temperature target such as 1.5 or 2C needs to be combined with information on a more regional scale to properly assess the full range of climate impacts,” said co-author Jim Haywood.

The research is published in the journal <a href="https://www.nature.com/ncomms/">Nature Communications</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

Artificially cooling the planet could have devastating effects

Geoengineering is the large-scale manipulation of Earth's climate in an...

Researchers from <a href="https://med.nyu.edu/">NYU School of Medicine</a> have discovered that mammals can identify scents much faster than previously realized. In less than one-tenth of a second, a <a href="https://www.earth.com/news/ancient-mammals-nocturnal-dinosaurs/">mammal</a> can distinguish between one odor and another, according to the new study.

By conducting tests on mice, researchers found that chemical particles which trigger the sense of smell known as odorants only need to reach a few signaling proteins on the inside lining of the nose for a familiar scent to be identified. The scientists also found that the mice could distinguish between odors regardless of how concentrated the scents were.


"Much like human brains only need a few musical notes to name a particular song once a memory of it is formed, our findings demonstrate that a mouse's sense of smell needs only a few nerve signals to determine the kind of scent," said senior researcher Dmitry Rinberg.

As soon as an odorant docks into its olfactory receptor protein on a nerve cell in the nose, the cell signals a region of the brain that assigns odor and the smell is identified, explained Rinberg. 

The most important of the research team's findings was that mice recognize a scent right after activation of the first few olfactory brain receptors, usually within the first 100 milliseconds of inhaling an odorant. 

This was significant because earlier studies in animals had found that it takes as long as 600 milliseconds for the majority of olfactory brain receptors involved in smell to become fully activated. Previous experiments in mice showed that their smell receptors peaked after approximately 300 milliseconds because they have a faster sense of smell.

In addition, researchers had not described the role of concentration in the odor identification process prior to the current analysis. Earlier investigations had shown that more receptors were activated by highly concentrated scents, but Rinberg’s study revealed that mice could quickly differentiate between scents regardless of concentration.

Rinberg’s team plans to develop more animal experiments to link brain cell activity to smell identification. They will also examine how their findings can be applied to people.

The study is published in the journal <a href="https://www.nature.com/ncomms/">Nature Communications</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Mammals can identify smells in a fraction of a second

Researchers from NYU School of Medicine have discovered that mammals...

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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

[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



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Kainji Lake in north central Nigeria

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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



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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

[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



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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



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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



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

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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



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Wetlands are a major source of methane emissions

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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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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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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

[sendtonews key="3UUsNkFOuS-2487333-12187" type="single"] Today's Video of the Day from NASA...

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...