You've undoubtedly noticed that the Moon has two distinct sides, right? The near side that we see from Earth and the far side that remains a mystery because it is never turned towards us.



This unusual lunar characteristic -- a global dichotomy -- is what a team of scientists led by Professor XU Yigang from the Guangzhou Institute of Geochemistry (<a href="http://english.gig.cas.cn/" target="_blank" rel="noreferrer noopener">GIGCAS</a>) of the Chinese Academy of Sciences has been investigating.



They have been studying lunar soil samples collected from the South Pole-Aitken (SPA) Basin on the far side of the Moon, and returned to Earth by China's <a href="https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=CHANG-E-6" target="_blank" rel="noreferrer noopener">Chang’e-6 mission</a>.



These invaluable samples have allowed them to investigate the Moon's peculiar dichotomy and the results have shed light on some of its secrets.



<h2 class="wp-block-heading" id="h-what-is-chang-e-6">What is Chang’e-6?</h2>



The Chinese space program launched Chang'e 6, their latest Moon mission, on May 3, 2024. The spacecraft blasted off from Wenchang Satellite Launch Center on a Long March 5 rocket at 9:27 UT (that's 5:27 PM Beijing time). 



Their goal? To grab about four pounds (2 kg) of Moon rocks from the far side - something no one had done before.



The lander touched down in a huge crater called the South Pole Aitken Basin. The team used both a scoop and a drill to dig up surface samples and even went 2 meters deep into the lunar soil. 



They also sent out a small rover that cruised around taking snapshots of the lander doing its work.



Once they collected the samples, the crew packed them into an ascent vehicle sitting on top of the lander. 



On June 3 at 11:38 PM UT (7:38 AM Beijing time the next day), this vehicle shot up from the Moon's surface and met up with the orbiter waiting above. They made the handoff on June 6, 2024.



After ditching the ascent vehicle (which crashed back into the Moon), the return vehicle hung around in orbit for a couple weeks before heading home. 



It pulled off a tricky skip-entry through Earth's atmosphere and landed in Inner Mongolia's Siziwang Banner region on June 25 at 6:07 UT (2:07 PM Beijing time). 



The final haul? Roughly 4.2 pounds (1.9 kg) of Moon rocks and soil from the far side -- marking another big win for China's space program.



<h2 class="wp-block-heading" id="h-far-side-vs-visible-side-of-the-moon">Far side vs. visible side of the Moon</h2>



The <a href="https://www.earth.com/news/its-official-earth-now-has-two-moons-captured-asteroid-2024-pt5/" target="_blank" rel="noreferrer noopener">Moon's</a> dichotomy is visible in its topography, chemical composition, crustal thickness, evidence of volcanism and, most noticeably, in the difference in geomorphology between its near and far sides.



The near side of the Moon is home to the familiar "man in the moon" maria - the dark "seas" that are the result of ancient volcanic activity. 



These areas were flooded with molten lava that created rocks known as mare basalts.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/11/moon_farside_volcanic-episodes_diagram_credit-YANG-Muhan_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/11/moon_farside_volcanic-episodes_diagram_credit-YANG-Muhan_1s.webp" alt="Distribution of distinct volcanic episodes on the Moon’s farside. The remote sensing image highlights the Chang’e-6 landing site along with nearby mare and cryptomare basaltic units. Credit: Image by YANG Muhan" class="wp-image-1950782"/></a><figcaption class="wp-element-caption">Distribution of distinct volcanic episodes on the Moon’s farside. The remote sensing image highlights the Chang’e-6 landing site along with nearby mare and cryptomare basaltic units. Credit: Image by YANG Muhan</figcaption></figure>



How about the far side? Well, here's where it gets intriguing. Only about 2% of this hidden part of the Moon is covered in the basalts, compared to around 30% on the near side.



This inexplicable difference is a vital part of the lunar global dichotomy that the Chinese Lunar Exploration Program aims to unravel.



<h2 class="wp-block-heading" id="h-secrets-of-the-moon-s-far-side">Secrets of the Moon's far side</h2>



Thanks to the Chang’e-6 lunar soil samples, Professor XU's team discovered the existence of two different types of mare basalts, low-Ti, and very low-Ti (VLT). 



“The samples returned by Chang’e-6 provide a best opportunity to investigate the <a href="https://www.earth.com/news/2024-pt5-mini-moon-say-goodbye-to-earths-second-moon-we-barely-got-to-know-you/" target="_blank" rel="noreferrer noopener">lunar</a> global dichotomy,” said Professor XU.



<figure class="wp-block-image aligncenter size-full"><img src="https://www.earth.com/wp-content/uploads/2024/11/moon_farside_volcanic-eruptions_basalt-types_credit-GIGCAS_1s.webp" alt="The two types of basalts in Chang’e-6 soils and isochrons of the Chang’e-6 low-Ti basalt. Credit: GIGCAS" class="wp-image-1950784"/><figcaption class="wp-element-caption">The two types of basalts in Chang’e-6 soils and isochrons of the Chang’e-6 low-Ti basalt. Credit: GIGCAS</figcaption></figure>



Let's not dismiss the aspect of dating these samples either. With high-precision Pb-Pb dating techniques, the team determined that the low-Ti basalt dates back to around 2.83 billion years ago.



This attests to the presence of "young" magmatism or volcanic activities on the far side of the Moon. But of course, young is a relative term when we talk about 2.83 billion years.



<h2 class="wp-block-heading" id="h-mapping-the-history-of-volcanoes">Mapping the history of volcanoes</h2>



With such valuable information now in our hands, we can clearly chart the volcanic timeline on the far side of the Moon. 



Led by Professor LI Qiuli, the team conducted radioisotope dating on 108 basalt fragments, with 107 of them revealing a consistent formation age of 2807 million years ago.



But there's more. One fragment, a high-aluminum basalt, was dated to a monumental 4203 million years ago, making it the oldest <a href="https://www.earth.com/news/harvest-moon-2024-will-feature-a-partial-lunar-eclipse/" target="_blank" rel="noreferrer noopener">lunar</a> basalt for which age has been precisely determined.



This implies elevated levels of volcanic activity on the far side of the Moon for at least 1.4 billion years - between 4.2 billion and 2.8 billion years ago.



<h2 class="wp-block-heading" id="h-why-does-any-of-this-matter">Why does any of this matter?</h2>



These findings, available for everyone to dissect, can help recalibrate the existing lunar crater chronology models. 



Christopher Hamilton, an independent planetary volcano expert, emphasized the importance of obtaining samples from this previously unchartered lunar territory.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/11/moon_farside_volcanic-episodes_Change-6-mission_landing_credit-CLEP_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/11/moon_farside_volcanic-episodes_Change-6-mission_landing_credit-CLEP_1s.webp" alt="China's Chang’e-6 mission spacecraft landed on the far side of the Moon. Credit: CLAP" class="wp-image-1950787"/></a><figcaption class="wp-element-caption">China's Chang’e-6 mission spacecraft landed on the far side of the Moon. Credit: CLAP </figcaption></figure>



More than just understanding the Moon, these lunar soil samples also have implications for some broad astronomical theories.



The new data indicates a constant impact flux after 2.83 billion years, which can offer new insights into planet migration in the early Solar System. 



So, by looking at the Moon, we are indirectly learning about our own cosmic neighborhood as well!



<h2 class="wp-block-heading" id="h-what-happens-next">What happens next?</h2>



With more missions like the Chang'e-6, the future will undoubtedly bring many enlightening discoveries about our constant celestial companion.



In the end, we see that the Moon, despite its <a href="https://www.earth.com/news/earth-may-have-captured-the-moon-from-space/" target="_blank" rel="noreferrer noopener">familiar appearance</a>, still hides untold secrets waiting to be discovered. 



These lunar missions represent a new age of lunar and planetary exploration that pushes the boundaries of our understanding.



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The researchers from the <a href="https://english.cas.cn" target="_blank" rel="noreferrer noopener">Chinese Academy of Sciences</a> express their gratitude for the support received from various institutes such as the Chinese Academy of Sciences and the National Natural Science Foundation of China. These institutions' enduring support enables such important lunar explorations.



The study is published in the journals <a href="https://www.nature.com/articles/s41586-024-08382-0" target="_blank" rel="noreferrer noopener">Nature</a> and <a href="https://www.science.org/doi/10.1126/science.adt1093" target="_blank" rel="noreferrer noopener">Science</a>.



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Far side of the Moon had volcanic eruptions for over one billion years

You've undoubtedly noticed that the Moon has two distinct sides, right? The near side that we see from Earth and the far side that remains a mystery because it is never turned towards us. This unusual lunar characteristic -- a global dichotomy -- is what a team of scientists led by Professor XU Yigang from the Guangzhou Institute of Geochemistry (GIGCAS) of the Chinese Academy of Sciences has been investigating. They have been studying lunar soil samples collected from the South Pole-Aitken (SPA) Basin on the far...

The remains of a baby snake found preserved in amber from Myanmar are estimated to be 99 million years old. The fossil, which is the first of its kind, is around two inches in length and has 97 vertebrae.

The experts also examined a second piece of amber containing what appears to be a fragment of skin from an adult <a href="https://www.earth.com/news/risk-death-snake-bites/">snake</a>. The specimens were obtained from an amber deposit in the Hukawng Valley of Myanmar, and date back to the early Late Cretaceous period.

Study co-author Dr. Lida Xing is a paleontologist from the <a href="http://en.cug.edu.cn/">China University of Geosciences</a> in Beijing. “The fossil is the first baby snake and the oldest baby snake to yet be found,” said Dr. Xing. 

Michael Caldwell is a snake paleontologist at the <a href="https://www.ualberta.ca/">University of Alberta</a> who also co-authored the study. According to the <a href="https://www.nytimes.com/">New York Times</a>, Dr. Caldwell said that, prior to this study, a fossilized baby snake has never been found - even in the rock fossil record.

Dr. Xing told the Times that hundreds of thousands of amber pieces had been retrieved from this region of Myanmar, but no snake was ever recovered.

When the specimen was first found, the creature inside was thought to be a centipede or a millipede because the head was missing. 

Micro-CT scans revealed that the fossil was that of a baby snake, and the paleontologists named the new species Xiaophis myanmarensis. It is unclear whether the snake was an embryo or a newborn, but tiny bones alongside a large spinal cord tube suggest that the baby was still developing.

“No one has ever seen a fossilized baby snake of any kind whatsoever. And having this one be nearly a hundred million old is really quite amazing,” Dr. Caldwell told <a href="https://www.nationalgeographic.com/">National Geographic</a>.

“Whether or not these early snakes were giving live birth, which is common in modern snakes, or whether they were hatching from eggs, is unclear. But based on size and developmental stage, this thing was a newborn.”

The study authors explained that the new snake fossils represent “a greater ecological diversity and global distribution of Late Mesozoic snakes, and more specifically, Cretaceous snakes, than was previously understood.”

The research is published in the journal <a href="http://advances.sciencemag.org/">Science Advances</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Ming Bai, Chinese Academy of Sciences

Fossilized baby snake preserved in amber 100 million years later

The remains of a baby snake found preserved in amber...

New plant breeding technologies have the potential to make fruits and vegetables more appealing to the eyes and also to the taste buds. A pair of food experts is reporting that the produce of the future could have enhanced colors, shapes, and sizes, along with improved health benefits.

Study co-author Andrew Allan is a food researcher at the New Zealand science institute <a href="https://www.plantandfood.co.nz/">Plant &amp; Food Research</a>.

“Novelty drives a lot of first time purchasing,” said Allan. “If the experience is good, then the consumer will purchase again. Choice is key - there is no risk with more choice.”

The researchers explained that fast breeding with CRISPR-Cas9 gene editing does not require the addition of a new DNA sequence, which is often the case with genetically modified crops. Instead, this technology allows scientists to edit existing genes. There is focus, in particular, on transcription factor genes called MYBs that control many of the key consumer traits in plants.

“MYBs often regulate the compounds that generate a fruit or vegetables' 'wow’ factor - its color,” said Allan. “These compounds are also associated with important health benefits such as lowering cardiovascular disease or acting as vitamins. By using MYBs to elevate these compounds to create a richer color, we can make produce both more appealing to consumers and more beneficial for the human diet.”


Editing MYBs can also transform produce beyond the surface. For example, some fruits and vegetables such as <a href="https://www.earth.com/news/best-wash-pesticides-apples/">apples</a> and potatoes have nutrients that are concentrated in the skin. Scientists can now modify MYBs to create produce with a consistent concentration of vitamins in every bite.

The breeding technology is also being used to modify the flavor and texture of produce, and Allan is excited by what this could mean for the future of our supermarkets. He said that this could be “the next green revolution, with more product choice for developed countries, greater yields for less developed countries, and more growing options for climate resilience.”

The study is published in the journal <a href="https://www.cell.com/trends/plant-science/home">Trends in Plant Science</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Plant breeding technology could make produce more appealing

New plant breeding technologies have the potential to make fruits...

It’s a well-known fact that we currently know less about the <a href="https://www.earth.com/news/carbon-storage-ocean-floor/">ocean floor</a> than we do about the surface of the moon. Our oceans are the largest and least explored environments on the planet, and scientists estimate they may contain up to a million species that are yet to be discovered. Still, deep-ocean dives in specially designed submersibles frequently turn up new species. Many of these organisms are soft-bodied – similar to jellyfish, squid, and octopuses – which makes them difficult to capture for study without harming them.

Luckily, a new device has just been developed by researchers at <a href="https://wyss.harvard.edu/">Harvard University’s Wyss Institute</a>, <a href="https://www.seas.harvard.edu/">John A. Paulson School of Engineering and Applied Sciences</a> (SEAS), and <a href="https://www.radcliffe.harvard.edu/">Radcliffe Institute for Advanced Study</a>. This device can capture soft-bodied species for study inside a folding polyhedral enclosure, before letting them go unharmed. The research is reported in <a href="http://robotics.sciencemag.org/">Science Robotics</a>.

The device was designed and built by Zhi Ern Teoh, Ph.D., and consists of five 3D-printed polymer “petals” attached to rotating joints that are linked together to create a scaffold. A motor applies torque to the point where the petals meet, resulting in the entire structure rotating about the joints and folding into a hollow dodecahedron – which is a twelve-sided 3D shape, almost like a rounded box. This device has been named the Rotary Actuated Dodecahedron (RAD). 

The RAD sampler was tested at the Mystic Aquarium in Mystic, CT, where it successfully collected and released moon jellyfish underwater. It was then modified to withstand open ocean conditions, and mounted on an underwater remotely-operated vehicle (ROV) provided by the <a href="https://www.mbari.org/">Monterey Bay Aquarium Research Institute</a> in Monterey, CA. The device was tested in the field at depths of 500-700 meters, using the ROV’s manipulator arm and a human-controlled joystick to operate the RAD. In the field, the team was able to capture soft organisms like squid and jellyfish in their natural habitats, and then release them unharmed. 

“The RAD sampler design is perfect for the difficult environment of the deep ocean because its controls are very simple, so there are fewer elements that can break. It’s also modular, so if something does break, we can simply replace that part and send the sampler back down into the water,” says Teoh. “This folding design is also well-suited to be used in space, which is similar to the deep ocean in that it’s a low-gravity, inhospitable environment that makes operating any device challenging.”

Teoh is currently working on a more rugged version of the RAD to be used in heavy-duty underwater tasks – such as marine geology. Robert Wood, Ph.D., a Founding Core Faculty member of the Wyss Institute, explains how the benefits of this device go beyond its practical use: “Our group’s collaboration with the marine biology community has opened the door for the fields of soft robotics and origami-inspired engineering to apply those technologies to solve problems in an entirely different discipline, and we are excited to see the ways in which this synergy creates novel solutions.” 

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

A novel device for capturing delicate, undiscovered sea creatures

It’s a well-known fact that we currently know less about...

CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) technology has revolutionized gene editing and allows scientists to make targeted cuts to DNA. 

CRISPR uses the Cas9 enzyme to do this and after target areas have been removed, the DNA repairs itself. 

The potential implications of CRISPR are massive as it could help eradicate genetic diseases, but there are still a wide range of ethical concerns about <a href="https://www.earth.com/news/public-opinion-gene-editing/">how far is too far when it comes to gene editing</a>. 

Now, a new study has found that CRISPR gene-editing can create large-scale unwanted DNA deletions that go by undetected. 

Researchers from the <a href="https://www.sanger.ac.uk/">Wellcome Sanger Institute</a> conducted the study which was published in the journal Nature Biotechnology. 

Because CRISPR involves cutting and rearranging DNA, the researchers found that this can cause mixed up rearrangements as the DNA attempts to repair itself and make unwanted deletions. 

“The cell will try to stitch things back together,” said Allan Bradley, the leader of the study. “But it doesn’t really know what bits of DNA lie adjacent to each other.”

Bradley and his team found that CRISPR was deleting strands of DNA that were thousands of letters long and because of the amplifying methods used to test the success of gene edits, these large-scale cuts went unnoticed. 

These unforeseen ramifications put a damper on CRISPR’s potential and calls for more stringent testing among researchers. 

There are some companies that are on the lookout for large-scale deletions, including eGenesis and Intellia. eGenesis is using gene editing to engineer pig organs so that they are safe for transplant. Itnellia is using CRISPR to study mouse livers but keeping an eye out for large-scale deletions is a routine part of their process.

Gene editing could remove the risk of genetic conditions and diseases but it’s also a process that is not without its flaws as this study shows, and more attention to these large-scale edits is needed by gene editing scientists. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com </a>Staff Writer

Scientists warn of the harmful effects of CRISPR gene editing

CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) technology has revolutionized...

While investigating the possible existence of a massive planet Beyond Pluto, scientists discovered that Jupiter has 12 more moons than previously realized. While 11 of these moons found orbiting the planet are considered to be normal, there is one that the experts are calling an “oddball.”

The research team, led by Scott S. Sheppard of the <a href="https://carnegiescience.edu/">Carnegie Institution for Science</a>, first observed a giant object in our solar system in 2014, which is now referred to as Planet X or Planet Nine.

“Jupiter just happened to be in the sky near the search fields where we were looking for extremely distant Solar System objects, so we were serendipitously able to look for new moons around Jupiter while at the same time looking for planets at the fringes of our Solar System,” said Sheppard.

Gareth Williams at the <a href="https://www.minorplanetcenter.net/iau/mpc.html">International Astronomical Union's Minor Planet Center</a> explained: “It takes several observations to confirm an object actually orbits around Jupiter. So, the whole process took a year.”

Nine of the newly-discovered moons are part of a distant collection of moons that orbit in the opposite direction of Jupiter's spin rotation. They are believed to have originated from larger bodies before colliding with asteroids, and take about two years to orbit the <a href="https://www.earth.com/news/dwarf-planet-ceres-water/">planet</a>.

[caption id="attachment_1216453" align="aligncenter" width="300"]<a href="https://www.earth.com/wp-content/uploads/2018/07/Jupiter.png"><img class="size-medium wp-image-1216453" src="https://www.earth.com/wp-content/uploads/2018/07/Jupiter-300x187.png" alt="" width="300" height="187" /></a> Image Credit: Roberto Molar-Candanosa, courtesy of Carnegie Institution for Science[/caption]

Two of the new moons have been found to orbit in the prograde, or same direction as the planet's rotation, within a closer group of moons. Similar orbital distances and angles suggest that this pair may be fragments of a larger moon that was broken apart, and they circle the planet in just under a year.

“Our other discovery is a real oddball and has an orbit like no other known Jovian moon,” said Sheppard. “It's also likely Jupiter's smallest known moon, being less than one kilometer in diameter.”

This moon, which takes about one and a half years to orbit Jupiter, is more inclined to the prograde group of moons - yet has an orbit that crosses the outer retrograde moons. For this reason, the atypical moon is more prone to collisions with both prograde and retrograde moons.

“This is an unstable situation,” said Sheppard. “Head-on collisions would quickly break apart and grind the objects down to dust.”

The incredible findings of the study modify the total number of moons orbiting Jupiter to 79, which is the most of any planet in our Solar System.
--
By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Scientists discover 12 new moons orbiting Jupiter

While investigating the possible existence of a massive planet Beyond...

Two Japanese volcanoes, Aira caldera and Kirishima, a more than 13 miles apart. But scientists are now realizing that the two are much more closely connected than anyone suspected.

Now, geologists have confirmed that the pair of volcanoes are connected by a vast subterranean network of magma. 

Their first concrete evidence came during the 2011 eruption of Kirishima.

"We observed a radical change in the behavior of Aira before and after the eruption of its neighbor Kirishima," said Dr. Elodie Brothelande, a researcher at the <a href="https://welcome.miami.edu/">University of Miami</a>. "The only way to explain this interaction is the existence of a connection between the two plumbing systems of the volcanoes at depth."

Brothelande led the team of geoscientists from the university’s <a href="https://www.rsmas.miami.edu/">Rosenstiel School of Marine and Atmospheric Science</a> and <a href="https://www.fiu.edu/">Florida International University</a> as they analyzed data collected by 32 geopositional satellite stations located near the Japanese volcanoes.

Before Kirishima erupted, scientists studying Aira found that the caldera had stopped growing. They believed the volcano was at rest – until magma started flowing at Kirishima. Now, the GPS data has confirmed what experts suspected: the two volcanoes were connected to the same pool of magma, and Kirishima’s eruption interrupted the flow to Aira.

It also lends new evidence to a long-lived hypothesis, that the eruption of one volcano can affect other nearby volcanoes. Volcanic activity elsewhere in the world has long pointed to this, but until now, there was no solid proof of such a relationship between two or more volcanoes.

That means that when scientists begin observing sudden changes at one volcano, they should look for other changes nearby that could indicate an eruption.

"Eruption forecasting is crucial, especially in densely populated volcanic areas," said Brothelande. "Now, we know that a change in behavior can be the direct consequence of the activity of its neighbor Kirishima."

—

By Kyla Cathey, <a href="http://www.earth.com">Earth.com</a> staff writer

Scientists: pair of Japanese volcanoes shared magma pool

Two Japanese volcanoes, Aira caldera and Kirishima, a more than...

Cardiovascular disease is taking a growing toll on India, especially among young adults and rural populations, a new national study has found.

Ischemic heart disease, which develops as arteries in the heart grow narrow, has increased rapidly among Indians from 30 to 69, with rural areas outpacing cities between 2000 to 2015, the researchers discovered. In northeastern India, rates of premature stroke deaths also rose to about three times the national average – though much of the country saw a decrease.

Dr. Prabhat Jha, who runs the Centre for Global Health Research at <a href="http://www.stmichaelshospital.com/">St. Michael’s Hospital</a> in Toronto, led the first-of-its-kind study of Indian health.

"The finding that cardiac disease rose nationally in India and that stroke rose in some states was surprising," Jha said. "This study also unearthed an important fact for prevention of death due to cardiovascular disease. Most deaths were among people with previously known cardiac disease, and at least half were not taking any regular medications."

Up until this study, most scientific research into cardiovascular disease in India has taken the form of small, local studies or modeling based on imprecise research. But cardiovascular disease is one of the major causes of death globally, especially ischemic heart disease and stroke. 

The researchers launched the study of India’s cardiovascular disease and death rates as part of the <a href="http://www.cghr.org/projects/million-death-study-project/">Million Death Study</a>, a global effort to examine causes of premature death.

Census takers with special medical training traveled throughout India, asking people about family members’ deaths and conducting “verbal autopsies” to determine the most likely causes.

"Making progress in fighting the leading cause of death in India is necessary for making progress at the global level," Jha said. "We demonstrated the unexpected patterns of heart attack and stroke deaths. Both conditions need research and action if the world is going to achieve the United Nations Sustainable Development Goal of reducing cardiovascular mortality by 2030."

The study has been published in <a href="http://www.thelancet.com/journals/langlo/article/PIIS2214-109X(18)30242-0/fulltext">The Lancet Global Health</a>.

—

By Kyla Cathey, <a href="http://www.earth.com">Earth.com</a> staff writer

Study finds spike in cardiovascular disease in India

Cardiovascular disease is taking a growing toll on India, especially...

Researchers have discovered what may be the Earth’s only mass cooling event, and it might have wiped out three-quarters of marine life on the planet. The mass extinction event has been linked to tiny algae, the team said.

The team, studying ancient ocean sediments discovered in Nevada, found that the algae population may have exploded during the Late Ordivician period. That in turn may have caused the atmosphere to cool rapidly, leading to a massive die-off of marine species, said Dr. Ann Pearson of Harvard University, one of the study’s co-authors.

“The coincidence of this community shift with a large-scale marine transgression increased organic carbon burial, drawing down [carbon dioxide] and triggering the Hirnantian glaciation,” the researchers wrote.

The team found that the samples of limestone and shale from Nevada, sediments from an ancient ocean, contained compounds that come from production of chlorophyll. 

But the amount of the compounds that the tiny algae produced nearly quintupled over just a few million years, the team found. 

That suggests that the algae population exploded – sucking up carbon dioxide and producing oxygen. In the process, excess carbon would have been trapped in the ocean floor, cutting atmospheric carbon levels drastically and perhaps triggering glacial expansion.

During the Late Ordivician from about 447 to 444 million years ago, a series of extinction events known as the “big five” took place. One of the events brought about the end of a majority of the sea-dwelling species at that time. An ice age that lasted half a million to 1.5 million years followed.

Most microalgae – including cyanobacteria, formerly known as blue-green algae – use photosynthesis to grow, processing sunlight, carbon dioxide and a few other nutrients.

Dr. Richard Pancost of the <a href="http://www.bristol.ac.uk/">University of Bristol</a> told <a href="https://eos.org/">Earth and Space Science News</a> that the study shows how algae may be an important part of carbon regulation on Earth.

“It is a fascinating hypothesis based on some exciting new data,” said Pancost, who was not involved with the study.

The study has been published in the journal <a href="https://www.nature.com/articles/s41561-018-0141-5">Nature Geoscience</a>.

—

By Kyla Cathey, <a href="http://www.earth.com">Earth.com</a> staff writer

Scientists: tiny algae triggered ancient mass extinction

Researchers have discovered what may be the Earth’s only mass...

Researchers at <a href="https://vt.edu/">Virginia Tech</a> are using methods similar to weather forecasting to anticipate the growth rates of trees. Changes in temperature, water, and atmospheric carbon concentrations can all affect forests, and ecological forecasting is aimed at predicting the future extent of these impacts.

The research expands on two previous investigations funded by the <a href="https://www.usda.gov/">U.S. Department of Agriculture</a>. 

The first study, known as PINEMAP, was based on <a href="https://www.earth.com/news/amber-fossil-frogs-tropical-forests/">forest</a> growth data collected by hundreds of researchers over the past 35 years. Using this data, mathematical models were developed to estimate how pine forests may respond to climate change.

The second project was led by R. Quinn Thomas, an assistant professor of Forest Dynamics and Ecosystem Modeling in Virginia Tech's Department of Forest Resources and Environmental Conservation. This study was focused on identifying uncertainties in how climate models predict the influence of forest ecosystems on temperature and precipitation patterns.

The similarities between these two projects prompted Thomas to design an additional study aimed at forecasting forest productivity through the middle of the 21st century.

“I realized that we could use the past to inform the future,” said Thomas. “Historical observations on tree growth and weather can be fed into a mathematical model describing how forests grow, making it more accurate over time. This is similar to how weather forecasts are updated as new weather data becomes available.”

Thomas and his team used the findings from both projects to develop an analytical framework that can be combined with predictions from climate models to generate a future ecological forecast.


The model, which represents the process of forest growth, is provided with data on the diameter of trees, the number of leaves produced in a given year, and how much water is evaporated from the forest.

Next, statistical methods similar to those used in weather forecasting are applied to the model, which is adjusted to account for uncertainties.

“This new study allows us to put a level of certainty or uncertainty on those estimates, so we're able to say ‘there is an 80-percent chance that the forest will grow faster over the next few decades,’” explained Thomas.

The research was focused specifically on loblolly pine plantations, an important source of timber for the Southeastern United States.

“We found that in this region, there will be about a 30-percent increase in productivity between now and the middle of the century,” said Thomas. “The largest gains are forecasted in Virginia, and there's high confidence that we'll see that increase in productivity there. In Florida, however, the increase in productivity is expected to be lower, and we may even see a decline in productivity between now and mid-century.”


Thomas pointed out that there are some uncertainties across varying regions of the Southeast. Regardless, the new method of ecological forecasting seems promising.

“I'm excited to see how this particular forecast does over the next few decades and to update it as we learn more about how forests work and as more data become available,” said Thomas. “Furthermore, this system sets a foundation for this process to be used in the forestry industry to predict other aspects besides productivity.” 

“Beyond that, the study is an example of how ecological scientists are starting to think about becoming forecasters in a way similar to how we've been forecasting the weather, and that's very exciting.”

The research is published in the journal <a href="https://esajournals.onlinelibrary.wiley.com/journal/19395582">Ecological Applications</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: <a href="https://vt.edu/">Virginia Tech</a>

Experts can now forecast forest growth much like weather

Researchers at Virginia Tech are using methods similar to weather...

The analysis of a neutrino, also known as a ghost particle, that blasted into Antarctic ice last year has just opened up an entirely new approach to space exploration. NASA’s Fermi Gamma-ray Space Telescope has traced the origin of the mysterious particle to a galaxy 3.7 billion light years away.

Neutrinos are named for being electrically neutral and also for their incredibly small mass, which was long believed to be zero. On the subatomic scale, the gravity of a neutrino is extremely weak and these particles normally pass through matter completely undetected at nearly the speed of light.

The presence of this particular neutrino was detected last September by <a href="https://icecube.wisc.edu/">IceCube</a>, a sensor buried about two kilometers beneath the ice near the Amundsen-Scott South Pole Station. 

The tremendous force behind the particle as it hit the ice indicated that it came from beyond our solar system. The neutrino struck the ice with the energy of about 300 trillion electron volts, according to <a href="https://www.nasa.gov/">NASA</a>, which is more than 45 times the energy that is generated by the most powerful particle accelerator on Earth.

Because cosmic rays are charged particles, powerful magnetic fields throughout space distort their trajectories. Neutrinos, on the other hand, have no charge and are unaffected by magnetic fields, which means their paths point almost directly to their source.

Once the trajectory of the neutrino was identified by IceCube, experts all over the world were alerted to look for flares or other outbursts in an effort to find its source. Ultimately, data from Fermi’s Large Area Telescope recognized accelerated gamma-ray emission that correlated with the rare neutrino interaction. 

The activity was coming from a type of galaxy known as a “blazar,” which has a supermassive black hole that blasts out streams of highly energetic particles in opposite directions. The term blazar is used when one of these streams is pointed directly toward the <a href="https://www.earth.com/video/what-exactly-is-a-near-earth-asteroid/">Earth</a>.

“Fermi’s LAT monitors the entire sky in gamma rays and keeps tabs on the activity of some 2,000 blazars, yet TXS 0506 really stood out,” explained NASA Postdoctoral Fellow Sara Buson. “This blazar is located near the center of the sky position determined by IceCube and, at the time of the neutrino detection, was the most active Fermi had seen it in a decade.”

The blazar known as TXS 0506 is around 3.7 billion light years from Earth, just to the left of the constellation Orion.

This is the first time scientists have ever detected a neutrino and identified its source. Detecting neutrinos, which are some of the most abundant substances on the planet, will provide scientists with a brand new way to explore the complex processes that are taking place in other galaxies billions of light years away.

Julian Osborne is a professor in the Department of Physics &amp; Astronomy at the <a href="https://le.ac.uk/">University of Leicester</a> and was part of a team that confirmed the blazar.

“This is literally a new way of seeing the universe,” Professor Osborne told <a href="https://www.theguardian.com/us">The Guardian</a>. “This really is the dawn of a new type of astronomy.”

The research is published in two separate papers in the journal <a href="http://www.sciencemag.org/">Science</a>.

-

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Felipe Pedreros, IceCube, NSF

Ghost particle arrived on Earth from 3.7 billion light years away

The analysis of a neutrino, also known as a ghost...

A new study from the <a href="http://www.exeter.ac.uk/">University of Exeter</a> is completely changing the timeline of when humans first left Africa. Ancient tools and bones discovered in China are providing evidence that humans arrived in Asia at least 270,000 years earlier than what was previously realized.

“Our discovery means it is necessary now to reconsider the timing of when early humans left Africa,” said study co-author Professor Robin Dennell.

A Chinese team of archaeologists led by Professor Zhaoyu Zhu of the <a href="http://english.cas.cn/">Chinese Academy of Sciences</a> recovered the artifacts. An analysis of the findings suggest that early humans colonized East Asia over two million years ago.

The oldest tools, which were found in the southern Chinese Loess Plateau, date back around 2.12 million years. The earliest evidence of humanity outside of <a href="https://www.earth.com/news/humans-evolve-africa/">Africa</a> prior to this study were 1.85-million-year-old skeletal remains and stone tools from Dmanisi, Georgia. The newly-discovered artifacts are older by 270,000 years. 

The ancient tools include a notch, scrapers, cobble, hammer stones, and pointed pieces. All of the specimens show signs of use, and the stone had been intentionally flaked. 

Most of the tools were made of quartzite and quartz that likely came from the foothills of the nearby Qinling Mountains and the streams flowing from them. Fragments of animal bones were also found to date back 2.12 million years.

There were 80 stone artefacts preserved in 11 different layers of fossil soils, which had developed in a warm and wet climate across the Chinese Loess Plateau. An additional 16 items were found in six layers of loess that developed under colder and drier conditions, showing that our early ancestors lived in this region under different climate conditions between 1.2 and 2.12 million years ago.

The study is published in the journal <a href="https://www.nature.com/nature/">Nature</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Prof. Zhaoyu Zhu

Fossils reveal that humans left Africa earlier than we thought

A new study from the University of Exeter is completely...

In 1991, the oldest naturally-preserved ice <a href="https://www.earth.com/news/dragon-dinosaur-mummy-display/">mummy</a> was discovered by German tourists in the Eastern Italian Alps. The first analysis of the ancient human’s stomach has revealed that the mummy, known as the Iceman, ate a final meal that was loaded with fat.

The research is providing rare insight into the dietary habits of European individuals more than 5,000 years ago during the Copper Age. The findings also offer a glimpse into how our ancient ancestors may have prepared food.


Study lead author Frank Maixner is an expert at the <a href="http://www.eurac.edu/en/research/health/iceman/Pages/default.aspx">Eurac Research Institute for Mummy Studies</a> in Bolzano, Italy. 

“By using a complementary multi-omics approach combined with microscopy, we reconstructed the Iceman's last meal, showing that he has had a remarkably high proportion of fat in his diet, supplemented with wild meat from ibex and red deer, cereals from einkorn, and with traces of toxic bracken,” said Maixner.


The researchers explained that the investigation had not been conducted sooner because scientists were initially unable to identify the Iceman's stomach, which had shifted upward during the mummification process.


Maixner said that the material found in the stomach was compared to extraordinarily well-preserved samples from the lower intestine. He also explained that the stomach “contained large amounts of unique biomolecules such as lipids, which opened new methodological opportunities to address our questions about Otzi's diet.”


Using both modern molecular approaches and classic microscopic methods, the researchers set out to determine the exact composition of the Iceman's diet before his death. 

The experts identified ibex adipose tissue, which made up about half of the stomach contents, as the most likely fat source. Although this level of fat content was not expected, the researchers said it makes perfect sense considering the extreme environment that the Iceman lived in.

“The high and cold environment is particularly challenging for the human physiology and requires optimal nutrient supply to avoid rapid starvation and energy loss,” explained study co-author Albert Zink. “The Iceman seemed to have been fully aware that fat represents an excellent energy source.”


According to the study, the wild meat had either been eaten fresh or dried out. The presence of toxic bracken particles from fern plants is difficult to understand, but the scientists believe it is possible that the iceman could have suffered intestinal problems from parasites and ate the bracken as treatment. The fern leaves could have also been used to the wrap food before it was eaten.

Next, the researchers will use traces of the gut bacterial community present in the Iceman's intestinal contents to reconstruct the ancient gut microbiomes of these other mummified remains.


The study is published in the journal <a href="https://www.cell.com/current-biology/home">Current Biology</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Southtyrolarchaeologymuseum\Eurac\M.Samadelli

Ice mummy’s last meal reveals human diet from the Copper Age

In 1991, the oldest naturally-preserved ice mummy was discovered by...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Nushagak Bay, a large estuary in southwest Alaska. Nushagak runs mainly north to south and exits in Bristol Bay, a large body of water in the Bering Sea.



"The bay is primarily fed by the Nushagak River, which begins in the Alaska Range and flows southwest approximately 450 km. The bay is also fed by several additional rivers including the Wood, Igushik, Snake and Weary rivers," says ESA.



"The dark colors of the Nushagak River are most likely due to tannins or lignins (chemical substances found in plants). Tannins and lignins from roots, leaves, seeds, bark and soil can leach into the water and give it a brown or even black colour. The sediments then flow southwards where it is mixed with the bluer waters of the bay."



Video/ Image Credit: ESA



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

Nushagak Bay in southwest Alaska

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Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> (ACS) reveals that proteins on flu viruses are actually flexible, tilting and waving in a “breath-like” motion. According to the experts, these proteins could be used to better defend against the flu.



"The main antigenic targets of influenza virus are two surface glycoproteins, hemagglutinin (HA) and neuraminidase (NA). Whereas the structural and dynamical properties of both glycoproteins have been studied previously, the understanding of their plasticity in the whole-virion context is fragmented," wrote the researchers.



To investigate, the team conducted detailed simulations of the influenza A H1N1 virion, or the swine flu. The experts concluded that the visualizations show many new vulnerable states of flu viruses, which could improve future vaccines and antiviral drugs.



Video/ Image Credit: American Chemical Society&nbsp;



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



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

Flu viruses are more flexible than expected

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

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Lake Trasimeno, which is located west of Perugia in central Italy. It is the fourth largest lake in the country. While Trasimeno’s water level varies, it has a maximum depth of approximately six meters.&nbsp;



"In this Copernicus Sentinel-2 image, captured on 6 August 2022, the lake’s emerald green colour is likely due to the presence of phytoplankton. Streaks in the water, particularly visible in the west, indicate the presence of soil and sediments which have been stirred up by winds. Dark colored waters in the southern part of the lake indicate a presence of submerged and floating macrophytes (aquatic plants) as well as algae," says ESA.



"Surrounded by hills on three sides, Trasimeno is subject to heavy storms created by winds, especially from the north and west. There are three islets in the lake: Maggiore, Minore and Polvese (the largest). The lake’s shores are sparsely inhabited with only two popular villages: Castiglione del Lago and Passignano sul Trasimeno."



"Italy is experiencing its worst drought in 70 years which has affected drinking water supplies, hydroelectric power and agricultural production. High temperatures, hot winds and lack of rainfall are the main causes of drought in the Umbrian region which saw Lake Trasimeno’s drop 1.3 m, reaching the limit of the hydrometric zero in July 2022."



Video/Image Credit: ESA&nbsp;



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

Lake Trasimeno in Central Italy

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Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes a new self-powered nanosensor that can instantly detect mercury contamination with the tap of a finger.&nbsp;



The oxidized form of mercury can be harmful when it is ingested through contaminated water or food. This makes it necessary for experts to develop sensors that can quickly and accurately detect the presence of mercury.&nbsp;



Zong-Hong Lin and colleagues have now created a triboelectric nanosensor (TENS) that can detect mercury by simply by touching a sample. According to the researchers, their TENS could serve as the basis for similar devices to safely and remotely monitor other pollutants.



Video Credit: American Chemical Society&nbsp;



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



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

Detecting mercury contamination with the tap of a finger

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

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



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



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



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



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



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



Video/ Image Credit: European Space Agency&nbsp;



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



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

Kainji Lake in north central Nigeria

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

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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



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



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

Designing crops that can beat the heat

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

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> explores the ability of salt to transform the way that foods and beverages taste. Salt is known to cover up undesirable flavors, such as bitterness in coffee or beer, but how exactly does sodium chloride change the taste of other compounds?



One previous study showed that, not only does salt suppress bitterness, but also enhances sweetness and sourness. Another study revealed that bitterness reduction by salt seems to be happening at the tongue receptor level as well as in the brain.&nbsp;



While it is known that salt taste is mediated by the presence of sodium channels in the form of taste buds, experts believe that there is also an unknown receptor responsible for how we taste salt that has not yet been identified.&nbsp;



Video Credit: ACS Reactions



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



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

How does salt makes things taste better?

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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

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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

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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

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Earth,Like,Exoplanet,3d,Render

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes two exoplanets that are orbiting a star 218 light-years away. A team of researchers led by the University of Montreal has found evidence that these planets are "water worlds."



The experts used data from NASA’s Hubble and Spitzer Space Telescopes. They discovered that exoplanets Kepler-138 c and Kepler-138 could be composed largely of water.



"We previously thought that planets that were a bit larger than Earth were big balls of metal and rock, like scaled-up versions of Earth, and that's why we called them super-Earths," explained study co-author Björn Benneke.&nbsp;



"However, we have now shown that these two planets, Kepler-138 c and d, are quite different in nature and that a big fraction of their entire volume is likely composed of water. It is the best evidence yet for water worlds, a type of planet that was theorized by astronomers to exist for a long time."



Video Credit: NASA Goddard



Image Credit: NASA, ESA, and Leah Hustak (STScI)



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



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

Two distant planets may be "water worlds"

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

[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...