Meat lovers can attest that the move to plant-based alternatives isn't always a simple transition. However, thanks to a team of innovative Stanford engineers, life is becoming a little tastier for those wishing to embrace greener diets.



Working from a unique mechanical engineering perspective, they’ve developed an intriguing approach to food texture evaluation. 



This could potentially lead to plant-based steaks that even the staunchest meat enthusiasts will find impossible to resist.



<h2 class="wp-block-heading" id="h-innovation-in-plant-based-meat-texture">Innovation in plant-based meat texture</h2>



The team from <a href="https://www.stanford.edu/" target="_blank" rel="noreferrer noopener">Stanford University</a> recently showcased how mechanical testing, combined with machine learning, can essentially mimic the palate of human taste testers. Their ingenious method could potentially accelerate the evolution of superior plant-based meats.



Interestingly, they discovered that several plant-based products are already successfully emulating the texture of the meats they strive to replicate. According to Ellen Kuhl, the senior author of the recent study, it is possible to close the gap between animal meat texture and that of plant-based meats. 



"We were surprised to find that today’s plant-based products can reproduce the whole texture spectrum of animal meats,” noted Kuhl.



This is phenomenal progress since the days when tofu was the only <a href="https://www.earth.com/news/the-meat-paradox-people-care-about-animals-but-still-eat-meat/" target="_blank" rel="noreferrer noopener">meat</a> substitute available.



<h2 class="wp-block-heading" id="h-the-environmental-impact-of-our-food-choices">The environmental impact of our food choices</h2>



Industrial animal agriculture's environmental toll is heavy; it leads to <a href="https://www.earth.com/news/meat-consumption-climate-change-2/" target="_blank" rel="noreferrer noopener">climate change</a>, pollution, habitat loss, and antibiotic resistance. An effective way to lighten this is by shifting from animal proteins to plant proteins.



Previous studies have shown that plant-based meats cause, on average, 50% less environmental impact than animal meats. However, most meat eaters are hesitant to make this change.



For instance, in one survey, only a third of Americans stated their likelihood of purchasing plant-based <a href="https://www.earth.com/news/are-plant-based-meat-alternatives-the-key-to-a-healthier-heart/" target="_blank" rel="noreferrer noopener">alternatives</a> as "very likely' or 'extremely likely."



"People love meat. If we want to convince the hardcore meat eaters that alternatives are worth trying, the closer we can mimic animal meat with plant-based products, the more likely people might be open to trying something new," explained Skyler St. Pierre, the lead author of the paper. 



Unfortunately, conventional food testing methods are neither standardized nor transparent, making it tougher for scientists to collaborate on creating new recipes for alternatives.



<h2 class="wp-block-heading" id="h-the-future-of-food-texture-testing">The future of food texture testing</h2>



This novel and futuristic food texture test that makes use of AI came to life as part of a class project by St. Pierre. He was looking for affordable materials to use in engineering tests on stress, load and stretching. He turned to tofu and hot dogs as possible study materials.



Through the summer of 2023, student researchers experimented with the texture and mechanics of these and other foods, and then trialed their findings on eight products including animal and plant-based hot dogs, sausages, turkey, and firm and extra firm tofu. 



A machine was used to simulate the act of chewing, and to test how the materials reacted when pulled, pushed, and sheared.



This data was then processed using machine learning to design a new type of neural network, and resulted in equations defining the properties of the different meats.



A survey was later conducted to test if these equations could truly replicate the sensation of texture. 



The survey respondents, after sampling the eight products, rated them in 12 categories including softness, hardness, brittleness, chewiness, gumminess, viscosity, springiness, stickiness, fibrousness, fattiness, moistness, and meat-likeness.



<h2 class="wp-block-heading" id="h-plant-based-findings-and-hope-for-the-future">Plant-based findings and hope for the future</h2>



The results were thrilling. For instance, plant-based hot dogs and sausages were very similar to their animal counterparts in terms of their stiffness. Human testers ranked the stiffness of the hot dogs and sausages very similarly to the mechanical tests. 



“What’s really cool is that the ranking of the people was almost identical to the ranking of the machine. That’s great because now we can use the machine to have a quantitative, very reproducible test,” said Kuhl.



Such discoveries suggest that data-driven methodologies may accelerate the development of delectable plant-based products. 



The team even suggests using generative <a href="https://www.earth.com/news/could-artificially-intelligent-machines-take-over-food-production/" target="_blank" rel="noreferrer noopener">AI</a> for creating plant-based meat recipes that have specific desired properties.



<h2 class="wp-block-heading" id="h-open-source-collaboration-and-future-prospects">Open-source collaboration and future prospects</h2>



In an effort to push this field forward, the team has opted for open-source data, allowing other researchers to view, add to, and learn from their work. 



“Historically, some researchers, and especially companies, don’t share their data and that’s a really big barrier to innovation,” Kuhl added.



The team continues in their food testing endeavors as they look to establish a public database of their findings.



They're now testing deli slices, both <a href="https://www.earth.com/news/eating-carrots-and-colorful-veggies-really-can-improve-your-eyesight/" target="_blank" rel="noreferrer noopener">vegetable</a> and meat-based. They also plan to test engineered fungi that has been developed by a new addition to their team.



Kuhl has generously extended an invitation to the wider community to contribute to the ongoing study. 



“If anybody has a plant-based meat they want to test, we’re so happy to test it to see how it stacks up,” said Kuhl.



In their quest to save the planet one bite at a time, these Stanford engineers are transforming our perception of plant-based diets. 



Their commitment to open-source information and collaboration is setting the stage for a more sustainable future.



The study is published in the journal <a href="https://www.nature.com/articles/s41538-024-00330-6" target="_blank" rel="noreferrer noopener">Science of Food</a>.



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Scientists are perfecting plant-based meats with AI

Meat lovers can attest that the move to plant-based alternatives isn't always a simple transition. However, thanks to a team of innovative Stanford engineers, life is becoming a little tastier for those wishing to embrace greener diets. Working from a unique mechanical engineering perspective, they’ve developed an intriguing approach to food texture evaluation. This could potentially lead to plant-based steaks that even the staunchest meat enthusiasts will find impossible to resist. Innovation in plant-based meat texture The team from Stanford University recently showcased how mechanical testing, combined...

In eusocial species – organisms that are highly organized and have groups of infertile workers – altruism is a community trait that can help keep the group alive and fit. For many years, it has been thought that genetics and the level of relation between individuals was the most important factor for the evolution of altruistic social behavior in some organisms. Now, a new study from researchers at <a href="https://www.global.hokudai.ac.jp/">Hokkaido University</a> has found that this is not the case.

An organism’s “fitness” is directly related to its ability to successfully reproduce and propagate its genes. In this study, researchers studied the foraging and nesting behaviors of the sweat bee (Lasioglossum baleicum), and found that the fitness was more strongly linked to the bees’ cooperative behavior than it was to their genetic similarity. This is the first empirical evidence to suggest that social behavior in eusocial species is only somewhat attributed to how related the individuals are to each other.

The results of this study go against earlier theories that linked altruistic selfless behavior in eusocial species to genetic relatedness and a desire to propagate their own genes. Past studies have found that, in some insect species, genetic similarity is higher between sisters than between a sister and its own offspring – this has been considered the key factor in the formation of a eusociety.

In their study, evolutionary biologist Eisuke Hasegawa and his colleagues studied five aggregations of sweat bee nests in a variety of areas on the island of Hokkaido in Japan. Each aggregation contained two types of nests: one in which multiple females worked together to care for the offspring of a single queen, and one in which a mother bee took care of her own offspring.

Observations found that the females working in cooperative nests foraged more often than females in solitary nests. Solitary nests were also devoid of adult females for a much larger amount of time than social nests, which leaves the nest vulnerable to predators. The main predator of sweat bees is the ant, which a solitary female sweat bee is able to fend off by plugging the nest opening with her head to protect it from scout ants. Cooperative nests are much more efficiently defended, as other females are able to defend the nest when one goes off to forage.

Individual females in social nests were found to have higher fitness than solitary females, which means that social bees are more successful in propagating their <a href="http://www.earth.com/news/two-genes-control-genes/">genes</a>. The researchers found that 92 percent of the increase in fitness is a result of the benefits of grouping (i.e. more efficient foraging and defense). The other 8 percent is attributed to genetic similarity between individuals. 

“There has been a decade-long debate among scientists as to whether genetic similarity or the benefit of grouping is the primary drive of sociality,” says Hasegawa. “Our study could help reveal some of the factors behind the evolution of cooperation, including among humans, by quantifying how much cooperative behavior contributes to the increased fitness of altruistic individuals in a group.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Norihiro Yagi

Cooperation in a society matters more than genetic relations

In eusocial species – organisms that are highly organized and...

Researchers working on NASA's <a href="https://omg.jpl.nasa.gov/">Oceans Melting Greenland</a> (OMG) campaign have been flying over the coast of <a href="http://www.earth.com/news/new-clues-about-greenlands-past-climate-will-help-predict-its-future/">Greenland</a> and dropping scientific probes into the surrounding water. The five-year project was designed to help scientists gain a better understanding of how Greenland's rapid ice loss is influenced by the ocean.

The team has collected measurements three times a year since 2016. During the spring, an aircraft measures the height of the ice sheet, while instruments are deployed by boat to map the seafloor around Greenland in the summer. 

During the fall, a team of OMG researchers led by principal investigator Josh Willis drop as many as 250 biodegradable probes from airplanes into very specific sites along the coastline. The goal is to measure the temperature of the water touching Greenland's glaciers.

The weather conditions at a particular drop site are impossible to know in advance. Willis explained, “If fog is low and we can't see that the water is clear of icebergs and people and whales, we can't drop.” At this point, the researchers would look for a similar site, or would simply move on to the next target.


Sea ice poses another major obstacle. The probes only weigh 14 pounds, which would not allow them to break through a site that is covered in ice. 


Many potential targets are located in areas where the sea ice has been broken up by large icebergs or has pulled away from the shore. When this happens, Willis must weigh the value of the probe - which may miss open water - versus the significance of data from that could be obtained from that particular location.

“There's always one or two spots where it seems impossible that we'll get a probe to fall between the icebergs and report data. And then we do,” said Willis. “Those Mission Impossible moments are pretty sweet.”

So far, the probes have provided experts with invaluable information. “We've had such spectacular success so far, I can hardly believe we get to do this for two more years,” said Willis. “I'm like a kid in a candy store.”

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="http://earth.com/staff/">Earth.com</a> Staff Writer

What makes ice melt so rapidly off the coast of Greenland?

Researchers working on NASA's Oceans Melting Greenland (OMG) campaign have...

<a href="http://www.earth.com/news/humans-driving-climate-change/">Climate change</a> is coming – if it’s not already here – and scientists around the world are working hard to find ways to combat it. One of the most recent and involved efforts comes from a team of over a dozen international researchers from the <a href="https://www.iddri.org/en/publications-and-events/workshop/ocean-solutions-initiative-amagnan-j-p-gattuso-r-bille">Ocean Solutions Initiative</a>, including scientists from the <a href="http://www.cnrs.fr/">CNRS</a>, <a href="https://www.iddri.org/en">IDDRI</a>, and <a href="http://www.sorbonne-universite.fr/en">Sorbonne University</a>. 

The researchers have published a report in <a href="https://www.frontiersin.org/journals/marine-science">Frontiers in Marine Science</a> in hopes that decision-makers gathering in Poland for the COP24 conference this December will take their data seriously. A major part of this report is an evaluation of the potential of thirteen ocean-based measures to counter climate change. 

Our oceans help regulate global warming by acting and both a carbon and heat sink. But they perform this duty at the cost of far-reaching effects that affect our marine physical and chemical processes, ecosystems, and the benefits they provide to our species. 

In this report, the researchers from the Ocean Solutions Initiative provide a first of its kind review of thirteen ocean-based measures, including local and global actions, that could potentially reduce the effects of climate change, or at least aid in our adaptation to a changing climate. They selected these measures based entirely off the frequency with which they are mentioned in scientific literature.

The measures assessed in this study fit into four categories: reducing atmospheric CO2 concentrations, increasing the proportion of solar radiation reflected back into space, protecting marine ecosystems, and manipulating biological and ecological adaptation to climate change impacts. Researchers analyzed each measure’s potential to reduce three climate-related drivers: ocean warming, ocean acidification, and sea-level rise. 

The measure with the highest potential for immediately addressing the causes of climate change was found to be a switch to ocean-based renewable energy. 

“Not only do offshore wind farms, wave energy and other ocean renewables have a very large potential to reduce carbon emissions, but they are also cost-effective and ready to be implemented at a large-scale,” says study co-author Dr. Alexandre Magnan of France's Institute for Sustainable Development and International Relations.

The researchers also determined local efforts with moderate effectiveness to decrease ocean acidification and sea-level rise. 

“Reducing marine pollution, stopping overexploitation of marine resources, restoring hydrological flow and protecting marine habitats are all technologically ready and have significant benefits,” says lead author Dr. Jean-Pierre Gattuso of the Centre National de la Recherche Scientifique (CNRS) in France. “Restoring and conserving coastal vegetation like mangroves, salt marshes and seagrass beds to enhance CO2 uptake and reduce further emissions is also already feasible with few disbenefits.”

Unfortunately, many of the other measures would be too costly or result in other – potentially more disastrous – environmental impacts. “Our study shows that all measures involve trade-offs and decisions should consider their relevance in terms of costs, benefits and ease of governability,” says Magnan. “The potential for ocean-based options to address climate change and its impacts is very high and depends on societies’ ability, from local to international levels, to decide about the right combination of measures.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Paid for by <a href="http://earth.com">Earth.com</a>

Why solutions for climate change need to focus on oceans

Climate change is coming – if it’s not already here...

In a very short period of time, the term “<a href="http://www.earth.com/news/people-believe-fake-news/">fake news</a>” has gone from an almost oxymoronic turn of phrase to become a crisis for media outlets around the world. Countless fake news generators have sprung up in the last year, filling social media pages and general discourse with biased, nonfactual information. While websites such as Politifact and Snopes attempt to debunk fake news as it comes out – the process is long, tedious, and overwhelming.

That is why researchers in <a href="https://www.csail.mit.edu/">MIT’s Computer Science and Artificial Intelligence Lab</a> (CSAIL) and the <a href="https://www.qcri.org/">Qatar Computing Research Institute</a> (QCRI) set out to find a new approach to debunking fake news. Their idea was not to focus on each fact or lack thereof individually, but to assess the news sources themselves. With this approach, they have demonstrated a new system that uses machine learning to determine if a source is factually correct or politically biased. 

“If a website has published fake news before, there’s a good chance they’ll do it again,” says postdoctoral associate Ramy Baly, the lead author on a new paper about the system. “By automatically scraping data about these sites, the hope is that our system can help figure out which ones are likely to do it in the first place.” According to Baly, the system only needs about 150 articles to reliably detect if a news source is trustworthy.

This system is the result of a collaboration between computer scientists at MIT CSAIL and QCRI, which is part of the <a href="https://hbku.edu.qa/">Hamad Bin Khalifa University</a> in Qatar. Analysis of the system’s own accuracy in determining factuality showed that it was 65 percent accurate at detecting whether an outlet has a high, medium, or low level of factuality. It also was roughly 70 percent accurate at detecting if an outlet leaned to the right, left, or was in the middle.

The researchers found that the most reliable ways to detect fake news and biased reporting were to assess the common linguistic features across the source’s stories – including sentiment, complexity, and structure. Fake news outlets were more likely to use language that was hyperbolic, subjective, and emotional. The authors say that the system also found correlations with an outlet’s Wikipedia page and its credibility. The longer pages that had fewer target words such as “extreme” or “conspiracy theory” were found to be more accurate.

However, co-author Preslav Nakov does state that this system is very much a work-in-progress, and that – even if its own accuracy was improved – it would be best to have it work alongside traditional fact-checkers. “If outlets report differently on a particular topic, a site like Politifact could instantly look at our ‘fake news’ scores for those outlets to determine how much validity to give to different perspectives,” says Nakov, a senior scientist at QCRI.

The research team also formed a new open-source dataset of more than 1,000 news sources annotated with factuality and bias score. This is the world’s largest database of its kind. Moving forward, the team plans to assess whether the English-trained system can be adapted to other languages and also determine religion-specific biases.

“It's interesting to think about new ways to present the news to people,” says Nakov. “Tools like this could help people give a bit more thought to issues and explore other perspectives that they might not have otherwise considered.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

New machine learning system helps debunk fake news

In a very short period of time, the term “fake...

Many of today's electronic devices such as televisions, <a href="http://www.earth.com/news/teens-losing-sleep-smartphones/">smartphone</a>s, and computer monitors have displays made with liquid crystals, which are substances that flow like liquids but still have crystal-like structures. While liquid crystals play an important part in modern technology, researchers have discovered that these substances may have played a much more critical role in ancient history by helping to support the earliest life on Earth.

The experts found evidence that liquid crystals helped in the assembly of the first biomolecules on the planet. The team demonstrated that short RNA molecules can form liquid crystals that promote growth into longer chains.

Scientists have speculated that life on Earth originated in an “RNA world,” where RNA carried genetic information and conducted metabolism before DNA or proteins emerged. To support this theory, catalytic RNA strands, or “ribozymes,” have been found in modern genomes. 

Ribozymes are about 16 to 150 nucleotides in length, and the scientists set out to investigate how these sequences assembled in a time before ribozymes or proteins existed. The research team, led by Tommaso Bellini, speculated that liquid crystals could have helped to guide short RNA precursors to form longer strands.

The researchers explored different scenarios under which short RNAs could self-assemble. Short RNA sequences, at just six or 12 nucleotides long, were found to spontaneously arrange into liquid crystal phases at high concentrations. Liquid crystals formed even more rapidly when the researchers added magnesium ions, which stabilized the crystals.

Once the RNAs were held together in liquid crystals, a chemical activator could efficiently join their ends into much longer strands. This also helped to prevent the formation of circular RNAs that could not be lengthened further. 

The study is published in the journal <a href="http://www.acsnano.org/">ACS Nano</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="http://earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: American Chemical Society

Liquid crystals may have helped in the creation of life itself

Many of today's electronic devices such as televisions, smartphones, and...

Victor and Isabel, the world's first <a href="http://www.earth.com/news/first-test-tube-lion-cubs/">lion cubs</a> to be conceived through artificial insemination, are described as being “healthy and normal” five weeks after they were born in South Africa. The outcome suggests that this reproductive alternative could be an option to help save lions and other endangered cat species.

Andre Ganswindt is the director of the Mammal Research Institute at the <a href="https://www.up.ac.za/">University of Pretoria</a>, where the experiment was developed. 

“There are tremendous threats to wildlife due to the loss of habitat and anthropogenic pressures which also affect big cats,” said Ganswindt. “That is why a number of species are listed as vulnerable or endangered, but this research could combat the threat of extinction facing several types of big cat around the world.”

After 18 months of preparation such as closely monitoring the female lion's hormone levels, she was artificially impregnated.

[caption id="attachment_1802021" align="aligncenter" width="700"]<a href="https://www.earth.com/wp-content/uploads/2018/10/Screen-Shot-2018-10-03-at-8.50.37-AM.png"><img class="wp-image-1802021" src="https://www.earth.com/wp-content/uploads/2018/10/Screen-Shot-2018-10-03-at-8.50.37-AM-1024x553.png" alt="" width="700" height="378" /></a> Image Credit: AFP/Getty Images[/caption]

“We collected sperm from a healthy lion, and luckily it was successful,” said Ganswindt. “There were several attempts, but surprisingly it didn't take too much effort.”

The African lion is currently listed as “vulnerable” on the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. The West African lion subpopulation is classified as “critically endangered.”

A news release from the University of Pretoria explains why the development of artificial insemination protocols are needed to protect lions from extinction. 

“Although African lions normally breed quite well in captivity, the wild population is highly fragmented and suffers progressively from isolation and inbreeding. Indiscriminate killing and prosecution, habitat loss and prey depletion, epidemic diseases, poaching, and trophy hunting threaten the extinction of these existing wild populations.”

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="http://earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: AFP/Getty Images

First lion cubs conceived with artificial insemination are healthy

Victor and Isabel, the world's first lion cubs to be...

The <a href="http://www.menopause.org/">North American Menopause Society</a> (NAMS) Annual Meeting, which takes place in San Diego this week, will address the question of why women usually live longer than men. Experts will review the latest studies on the protective effects of sex hormones and estrogen, and will provide tips for improving telomere health to slow down the <a href="http://www.earth.com/news/halting-aging-rejuvenating-cells/">aging</a> process.


While the gender gap in longevity is not fully understood, it may be at least partially attributed to the effect of estrogen on heart health. This hormone is believed to help protect women from heart disease for a longer period in life.

To investigate why women may age more slowly than men, researchers looked at the rate of cellular aging. From birth, women have longer telomeres, which are the endcaps of DNA strands that protect chromosomes from deterioration. 

The significance of telomeres in living a longer, healthier life has been long understood. Recently, there is a growing collection of studies focused on how telomere length is damaged and what can be done to prevent this damage. Since longer telomeres predict less cardiovascular disease, they are indicative of a longer life for both men and women.

In her Keynote Address at the upcoming meeting, Dr. Elissa Epel from the <a href="https://www.ucsf.edu/">University of California in San Francisco</a> will provide a detailed look at the factors that influence telomere length, with an emphasis on women's reproductive health, hormones, and mental health. 

“Some experimental studies suggest estrogen exposure increases the activity of telomerase, the enzyme that can protect and elongate telomeres,” said Dr. Epel.

Dr. JoAnn Pinkerton, the NAMS executive director, added: “We look forward to what promises to be a fascinating presentation with implications for slowing telomere attrition and age-related conditions.”

The study is published in <a href="http://www.menopause.org/publications/professional-publications/menopause-journal-contents/menopause-journal-nonmembers">Menopause: The Journal of the North American Menopause Society</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="http://earth.com/staff/">Earth.com</a> Staff Writer

Why do women tend to age more slowly than men?

The North American Menopause Society (NAMS) Annual Meeting, which takes...

A recent discovery of prehistoric rock carvings, or petroglyphs, in India has archaeologists baffled. These carvings, found beneath the soil across 52 villages in India’s western state of Maharashtra, may be evidence of a previously unknown civilization that lived tens of thousands of years ago. But that isn’t the only thing that has scientists excited.

The petroglyphs are filled with depictions of animals, which leads archaeologists to suspect that they were created by a hunter-gatherer community. But the details of these animals have the scientific community confused, as none of the animals depicted are native to the region. These carvings include pictures of <a href="http://www.earth.com/news/basking-sharks-swimming-skills/">sharks</a>, whales and turtles, along with hippos and rhinoceroses – which are not native to India.

[caption id="attachment_1801999" align="aligncenter" width="700"]<a href="https://www.earth.com/wp-content/uploads/2018/10/rock-1.png"><img class="wp-image-1801999" src="https://www.earth.com/wp-content/uploads/2018/10/rock-1-1024x535.png" alt="" width="700" height="366" /></a> Image Credit: BBC[/caption]

It’s possible that this ancient civilization may have migrated to India from Africa, where many of the depicted animals can be found. But it’s also possible that the large, non-native mammals in these carvings once roamed between continents, covering a much bigger area than previously thought.

These carvings could be the oldest petroglyphs ever found – dating back to the year 10,000 B.C. – and they were found by the thousands throughout the Konkan region of western Maharashtra. The expedition that discovered them was led by Sudhir Risbood and Manoj Marathe after they’d observed a few nearby, according to the <a href="http://www.bbc.com/">BBC</a>.

[caption id="attachment_1802000" align="aligncenter" width="700"]<a href="https://www.earth.com/wp-content/uploads/2018/10/rock-2.png"><img class="wp-image-1802000" src="https://www.earth.com/wp-content/uploads/2018/10/rock-2-1024x550.png" alt="" width="700" height="376" /></a> Image Credit: BBC[/caption]

“We have not found any pictures of farming activities,” says Tejas Garge, director of the Maharashtra state archaeology department. “But the images depict hunted animals and there’s detailing of animal forms. So this man knew about animals and sea creatures. That indicates he was dependent on hunting for food.”

[caption id="attachment_1802001" align="aligncenter" width="700"]<a href="https://www.earth.com/wp-content/uploads/2018/10/rock-3.png"><img class="wp-image-1802001" src="https://www.earth.com/wp-content/uploads/2018/10/rock-3-1024x539.png" alt="" width="700" height="369" /></a> Image Credit: BBC[/caption]

This discovery has raised questions about the prehistoric dispersal of some of the animals, as well as the people who once inhabited the region. Since the discovery was made, researchers have been working to document and preserve the thousands of ancient carvings. The state government recently designated 240 million rupees ($3.2 million) to study 400 of the petroglyphs in greater detail. Needless to say, there is a lot of interest surrounding these ancient carvings.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: BBC

Ancient rock carvings raise questions of mysterious hunter-gatherers

A recent discovery of prehistoric rock carvings, or petroglyphs, in...

Weak pulsed electromagnetic field (PEMF)-based therapies use weak magnetic fields on body tissues to improve the symptoms of a number of diseases – including <a href="http://www.earth.com/news/depression-anxiety-heart-attack/">depression</a> and Parkinson’s disease. 

However, it is still unclear whether they actually provide any beneficial effects, and the mechanisms by which they work are still unknown. But a new study published in the journal <a href="https://journals.plos.org/plosbiology/">PLOS Biology</a> may have just found the previously undiscovered mechanism.

Researchers from <a href="https://www.xavier.edu/">Xavier University</a> have reported that the effects of exposure to PEMFs may be determined by a protein related to one that helps birds migrate. Margaret Ahmad and colleagues knew that the magnetic field strength used in PEMF-based therapies was below what is required to cause neurons to fire. Because of this, they wanted to see whether the effects might instead be a result of activation of a protein that senses magnetic fields. An example of these types of proteins is a group called cryptochromes, which are found in a wide variety of organisms, and help orient birds to Earth’s magnetic field during their migration.

When the researchers subjected human cells to a week magnetic field, they found that the cells increased their production of reactive oxygen species (ROS) – a group of molecules involved in cell signaling, among other roles. They found that the increase in ROS slowed cell growth, and led to the expression of numerous ROS-responsive genes. 

With these results, the study’s authors believe they have found a new mechanism to explain the effects of weak magnetic fields on human cells. Their findings also fit with the proposed harmful effects of PEMFs on human health, as the cryptochrome-induced production of ROS can be damaging in excess. Additionally, the potential benefits of PEMF-based therapy may be due to the signaling function of ROS, which is induced by activation of cryptochrome. Because both cryptochrome activation and ROS production can be measured, these results may lead to further examination and understanding of crpytochrome’s contribution to both the benefits and harms of exposure to PEMFs. 

“Our findings provide a rationale for optimizing low-strength magnetic fields for novel therapeutic applications,” says Ahmad. “At the same time, they suggest that alone, or in combination with other environmental triggers of ROS production, such fields have the potential to negatively impact public health.”

The authors are careful to state that this study was not perfect, and future studies can certainly improve on their methods.

 “Should this paper be independently replicated by multiple labs it will undoubtedly be influential,” say Lukas Landler and David Keays in a “Primer” article accompanying the study. “It is conceivable that leukemia associated with 50 Hz power lines, PEMF mediated ROS generation, and animal magnetoreception are mechanistically similar – each requiring the presence of cryptochrome... It may well transpire that cryptochrome is a magnetosensor, but one with a sinister side.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Weak magnetic fields can both help and harm public health

Weak pulsed electromagnetic field (PEMF)-based therapies use weak magnetic fields...

Experts at <a href="https://ww2.mc.vanderbilt.edu/">Vanderbilt University Medical Center</a> have investigated the brain networks involved in free will using a new technique known as lesion network mapping. The study revealed that all brain activity related to the power to act, or volition, falls within the same <a href="http://www.earth.com/news/brain-sleep-experiences-genetics/">brain network</a>.

The experts teamed up with researchers from <a href="https://hms.harvard.edu/">Harvard Medical School</a> to analyze  cases of akinetic mutism, patients who lack the motivation to move or speak, and alien limb syndrome, which is when patients feel that their movement is generated by someone else.

The study revealed that even though injuries disrupting volition can occur in many different locations, they are still part of the same brain network. Furthermore, injuries that disrupt agency, or a feeling of responsibility for carrying out those actions, fall within a separate network.


Dr. Ryan Darby is an  assistant professor of Neurology at Vanderbilt and the lead author of the study.

“Our approach challenges the assumption that neuropsychiatric symptoms should localize to one brain region, and instead shows that these symptoms localized to interconnected brain networks,” said Dr. Darby. “Once we understand that agency and volition localize to brain networks, can we then take that knowledge and develop a new approach to treating a symptom?”

The researchers concluded that stimulation in different parts of brain networks could change free will perception.

The team also studied psychiatric patients with disrupted free will, including motor conversion disorder and catatonia. These psychiatric patients had neuroimaging abnormalities in brain networks associated with volition and agency.

“There are very few approaches where you can compare a similar type of symptom in a neurological patient and a psychiatric patient,” said Dr. Darby. “Our study shows the promise of using our network localization method in neurological patients to better understand symptoms in psychiatric patients. That being said, it's the first time we have used our technique with neuroimaging abnormalities in psychiatric patients. It would require further study and validation, but I think the promise is there.”

The study is published in the <a href="http://www.pnas.org/">Proceedings of the National Academy of Sciences</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Stimulating different areas of the brain can alter free will

Experts at Vanderbilt University Medical Center have investigated the brain...

The newest innovation in cube technology – the RainCube – is actually more weatherman than cube. This satellite is no bigger than a shoebox, yet it contains enough experimental technology to see storms by detecting rain and snow, and does so from way up above our heads.

The RainCube is a small satellite prototype that could one day be the first of a fleet of RainCubes to help us monitor severe storms and improve the accuracy of weather forecasts – as well as track <a href="http://www.earth.com/news/severe-storms-climate-change/">climate change</a> over time. 

“We don’t have any way of measuring how water and air move in thunderstorms globally,” says Graeme Stephens, director of the <a href="https://climatesciences.jpl.nasa.gov/">Center of Climate Sciences at NASA’s Jet Propulsion Laboratory</a> in Pasadena, California. “We just don’t have any information about that at all, yet it’s so essential for predicting severe weather and even how rains will change in a future climate.”

The device is able to “see” objects using radar, and has an umbrella-like antenna to send our specialized radar signals that bounce off raindrops, and reveals a picture of what the inside of a storm looks like. “The radar signal penetrates the storm, and then the radar receives back an echo,” explains Principal Investigator Eva Peral. “As the radar signal goes deeper into the layers of the storm and measures the rain at those layers, we get a snapshot of the activity inside the storm.”

RainCube was first deployed into low-Earth orbit from the International Space Station in July. It sent back its first images of a storm over Mexico in August, and would later send a second wave of images in September in the first rainfall of Hurricane Florence.

However, the RainCube was never designed to track entire storms by itself. This first deployment was simply a demonstration of how the mini-rain radar could work. Many more of these satellites could be sent into orbit, tracking storms and relaying updated information every few minutes. 

“We actually will end up doing much more interesting insightful science with a constellation rather than with just one of them,” Stephens says. “What we’re learning in Earth sciences is that space and time coverage is more important than having a really expensive satellite instrument that just does one thing.”

This new technology could potentially lead to an entirely novel way for us to observe our planet using many small radars. 

“There’s a plethora of ground-based experiments that have provided an enormous amount of information, and that’s why our weather forecasts nowadays are not that bad,” says Simone Tanelli, the co-investigator for RainCube. “But they don’t provide a global view. Also, there are weather satellites that provide such a global view, but what they are not telling you is what's happening inside the storm. And that’s where the processes that make a storm grow and/or decay happen.”

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: UCAR

NASA is testing tiny, new satellites to monitor global storms

The newest innovation in cube technology – the RainCube –...

A new berry may soon be coming to your supermarket thanks to gene editing technology.

Groundcherries are a little-known fruit native to Central and South America. With a distinct and delicious taste, groundcherries are well-loved by those who have been lucky enough to try them, but because they have remained undomesticated, the berry has yet to reach mainstream markets.

This makes the groundcherry an orphan crop, a group of plants that are grown locally in small-scale. Quinoa is a rare example of an orphan crop that can be found in supermarkets across the world, but most orphan crops are only known in their native regions.

Researchers from <a href="https://www.hhmi.org/">Howard Hughes Medical Institute</a> and the <a href="https://btiscience.org/">Boyce Thompson Institute</a> recently published a study outlining plans to make the groundcherry a feasible option for large-scale agricultural production.

According to the results, published in the journal Nature Plants, it’s now possible with gene editing and genomic research to take a wild plant and domesticate it in a matter of years.

“I firmly believe that with the right approach, the groundcherry could become a major berry crop,” said Zachary B. Lippman, an author of the study. “Some scientists might consider the idea a reach, he adds. “But I think we're now at a place where the technology allows us to reach.”

Groundcherries are drought tolerant and have a complex flavor, according to Lippman, which makes them an excellent candidate for large-scale production.

However, getting the plants to a place where they can be grown as a major crop through using traditional breeding methods would be a costly and time-consuming investment.

Instead, the researchers turned to gene editing to see if it was possible to speed up the domestication process for the groundcherry.

In order to domesticate the groundcherry, the researchers used genome sequencing, gene editing CRISPR technology, and gene identification to improve the plant.

As it’s grown now, the groundcherry needs to be more compact, with larger fruits and flowers and a more robust flavor to be more appealing to a mass market, according to the researchers.

This study is the first of its kind that showcases how genome editing could make orphan crops widely available.

The researchers say that some traditional plant breeding will be needed to make the groundcherry ready for large-scale production.

Exactly when the groundcherry will be available at your local supermarket, the researchers can’t say, but the study gives hope to creating new, innovative methods for improving crops and making orphan crops mainstream. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer

Image Credit: Sebastian Soyk

Little-known berry could become the next big fruit

A new berry may soon be coming to your supermarket...

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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

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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

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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?

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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

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

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



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



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



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



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



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



Video Credit: Johns Hopkins&nbsp;



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



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

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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

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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

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

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Today's Video of the Day from <a href="https://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...