Astronomers caught a star system at the moment when solid grains began to form planets. This snapshot reveals how planets first start to form, just as Earth once did.



The infant star HOPS-315 sits about 1,300 light-years, roughly 7.6 quadrillion miles, away in the constellation Orion. Around it whirls a disc of gas and dust where heat is high enough to bake rock yet cool enough for those rocks to <a href="https://www.earth.com/news/how-do-giant-planets-form/">re-form</a>.



<a href="https://www.universiteitleiden.nl/en/staffmembers/melissa-mcclure#tab-1" target="_blank" rel="noreferrer noopener">Melissa McClure</a> of Leiden University led the international team that pieced together these first moments of planetary assembly. Their finding gives researchers a live laboratory that mirrors the opening chapter of the Solar System’s own story.



<h2 class="wp-block-heading" id="h-how-planets-form-from-early-solids">How planets form from early solids</h2>



In primitive meteorites, tiny calcium-aluminum-rich inclusions tell us that the Solar System’s clock started ticking <a href="https://www.science.org/doi/10.1126/science.1226919" target="_blank" rel="noreferrer noopener">4.567 billion</a> years ago. Those inclusions condensed from a searing vapor and seeded every terrestrial planet we know.



Because the clock starts with condensation, catching that step beyond the Sun has been an astronomer’s white whale. 



The new observation marks the first time any telescope has seen <a href="https://pubs.rsc.org/en/content/articlelanding/2022/cp/d2cp02188a" target="_blank" rel="noreferrer noopener">gas-phase silicon monoxide</a> (SiO) alongside freshly crystallizing silicates in the same patch of a <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/protoplanetary-disk" target="_blank" rel="noreferrer noopener">protoplanetary disc</a>.



McClure’s team spotted the minerals within an orbit comparable to our asteroid belt. That match matters, for it pins early <a href="https://www.earth.com/news/how-planets-form-its-much-more-complicated-than-we-thought/">chemistry</a> to a region that later fed Earth with water and metals.



<h2 class="wp-block-heading" id="h-crystals-forming-around-hops-315">Crystals forming around HOPS-315</h2>



The James Webb Space Telescope (<a href="https://science.nasa.gov/mission/webb/" target="_blank" rel="noreferrer noopener">JWST</a>) collects infrared light that pierces the dust cocoon shrouding HOPS-315, revealing the distinct fingerprint of hot SiO molecules. Those molecules glow at about 2,200°F, a temperature that vaporizes most common rocks.



<a href="https://www.almaobservatory.org/en/home/" target="_blank" rel="noreferrer noopener">ALMA</a>, the Atacama Large Millimeter/submillimeter Array, then measured the same region at millimeter wavelengths and mapped where the glow comes from. 



By combining the two views, scientists confirmed that both gas and solid forms of silicon occupy a ring no farther than 2 astronomical units from the star.



Handling these observations is tricky because HOPS-315 also drives a jet rich in SiO. The team disentangled the jet’s signal from the disc’s by checking velocities, the jet gas races outward, whereas disc material <a href="https://www.earth.com/news/july-2025-skywatching-bright-planets-and-a-summer-constellation/">orbits</a> sedately.



A final check involved comparing the brightness of different SiO lines. The ratio matched laboratory predictions for vapor that is actively condensing, adding yet another layer of confidence to the result.



<h2 class="wp-block-heading" id="h-planets-forming-from-gas-and-crystals">Planets forming from gas and crystals</h2>



Crystalline silicates appear where cooling vapor meets a sharp fall in temperature. The presence of both phases at one location means condensation is happening right now, not long ago nor far away in another part of the disc.



“This process has never been seen before in a protoplanetary disc, or anywhere outside our Solar System,” said <a href="https://lsa.umich.edu/astro/people/core-faculty/ebergin.html" target="_blank" rel="noreferrer noopener">Edwin Bergin</a> of the <a href="https://lsa.umich.edu/astro" target="_blank" rel="noreferrer noopener">University of Michigan</a>, a co-author on the study. 



He adds that the minerals are the same kind locked inside 4.5-billion-year-old meteorites on Earth’s shelves.



<figure class="wp-block-image aligncenter size-full"><a href="https://cdn.eso.org/images/wallpaper5/eso2512a.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/07/solar-system-forming_HOPS-315_ESO_1s.webp" alt="This is HOPS-315, a baby star where astronomers have observed evidence for the earliest stages of planet formation. Together with data from the James Webb Space Telescope (JWST), these observations show that hot minerals are beginning to solidify. In orange we see the distribution of carbon monoxide, blowing away from the star in a butterfly-shaped wind. In blue we see a narrow jet of silicon monoxide, also beaming away from the star. These gaseous winds and jets are common around baby stars like HOPS-315. Credit: ALMA(ESO/NAOJ/NRAO)/M. McClure et al." class="wp-image-1978595"/></a><figcaption class="wp-element-caption">This is HOPS-315, a baby star where astronomers have observed evidence for the earliest stages of planet formation. Together with data from the James Webb Space Telescope (JWST), these observations show that hot minerals are beginning to solidify. In orange we see the distribution of carbon monoxide, blowing away from the star in a butterfly-shaped wind. In blue we see a narrow jet of silicon monoxide, also beaming away from the star. These gaseous winds and jets are common around baby stars like HOPS-315. Click image to enlarge. Credit: ALMA(ESO/NAOJ/NRAO)/M. McClure et al.</figcaption></figure>



“We’re really seeing these minerals at the same location in this extrasolar system as where we see them in asteroids in the Solar System,” said co-author, Logan Francis from the Advanced Functional Fabrics of America (<a href="https://affoa.org/" target="_blank" rel="noreferrer noopener">AFFOA</a>). 



He notes that the condensation zone sits at almost the same orbital radius as our <a href="https://www.earth.com/news/asteroids-found-in-the-main-belt-are-the-smallest-ever-detected/">asteroid belt</a>. 



The mineral grains measure less than a micrometer across, yet they mark the first step toward kilometer-scale planetesimals. Electrostatic forces will make them clump for thousands of years until <a href="https://www.earth.com/news/astronomers-announce-evidence-suggesting-that-our-solar-system-has-nine-planets-again/">gravity</a> takes over.



<h2 class="wp-block-heading" id="h-hops-315-mirrors-earth-s-origins">HOPS-315 mirrors Earth’s origins</h2>



Laboratory studies show that minerals rich in silicon and oxygen condense first, followed quickly by iron-nickel alloys and then more volatile compounds. 



Seeing hot SiO vapor around HOPS-315 hints that a similar chemical parade is marching there.



By estimating the star’s luminosity and the disc’s temperature gradient, McClure’s group concludes that crystalline silicates could mass about a tenth of the Moon. That is plenty to seed multiple rocky planets if subsequent growth is efficient, as models suggest.



Isotopic <a href="https://arxiv.org/abs/1708.02631" target="_blank" rel="noreferrer noopener">work</a> on chondrules indicates that the earliest building blocks in our own <a href="https://www.earth.com/news/jupiters-past-how-the-young-gas-giant-shaped-our-solar-system/">Solar System</a> formed within the first million years, a timescale now testable in real time with HOPS-315.



Matching astronomical data to isotope chronometers promises a much sharper picture of planet formation than meteoritic studies alone.



The discovery may also shed light on why Earth contains less carbon than nebular models predict. If early minerals trap oxygen and silicon immediately, carbon may remain gaseous longer and get pushed outward before it can join newborn worlds.



<h2 class="wp-block-heading" id="h-what-s-next-in-watching-planets-form">What’s next in watching planets form</h2>



Over the next year, ALMA will return to HOPS-315 to look for water ice farther out in the disc. 



If water lines up beyond the silicate ring, astronomers can test whether rocky seeds migrate inward before they acquire ice mantles, a step that may explain why Earth ended up with oceans.



JWST will track how the SiO signature evolves. A steady decline would show vapor freezing out, whereas a surge could hint at heating bursts from magnetic flares or spiral shocks.



<figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
https://youtu.be/0j-MH6_QlBA?si=3P8FgBE0O2TTWsnM
</div><figcaption class="wp-element-caption">Witnessing the dawn of a new solar system. Credit: ESO</figcaption></figure>



Beyond the specifics of HOPS-315, the result boosts confidence that rocky planets are common. If condensation begins so early, many stars may launch planet formation well before their gas discs disperse, leaving time for worlds to migrate, collide, and settle into stable orbits.



Astronomer Elizabeth Humphreys at ESO, who was not involved in the study, said she was “really impressed” that the team could pinpoint the first solids. 



She argues that the synergy of Webb and ALMA is revealing a Universe “in which the steps toward life-bearing planets start earlier than we dared hope.”



The study is published in <a href="https://www.nature.com/articles/s41586-025-09163-z" target="_blank" rel="noreferrer noopener">Nature</a>.



-----



Like what you read? <a href="https://www.earth.com/subscribe/">Subscribe to our newsletter</a> for engaging articles, exclusive content, and the latest updates.&nbsp;



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



-----

Astronomers capture the birth of a new solar system for the first time ever

Astronomers caught a star system at the moment when solid grains began to form planets. This snapshot reveals how planets first start to form, just as Earth once did. The infant star HOPS-315 sits about 1,300 light-years, roughly 7.6 quadrillion miles, away in the constellation Orion. Around it whirls a disc of gas and dust where heat is high enough to bake rock yet cool enough for those rocks to re-form. Melissa McClure of Leiden University led the international team that pieced together these first moments of...

MSU soybean and corn fields at sunset in July, 2006.

Tiny bits of decomposing leaves in soil emit nitrous oxide, a greenhouse gas that's more potent than carbon dioxide, according to a new <a href="https://msu.edu/">Michigan State University</a> study.

The findings, published in <a href="http://www.nature.com/ngeo/">Nature Geoscience</a>, could help scientists refine nitrous oxide emission predictions and guide future agriculture and <a href="https://www.earth.com/news/rainfall-carbon-emissions-soil-microbes/">soil</a> management practices.

"Most nitrous oxide is produced within teaspoon-sized volumes of soil, and these so-called hot spots can emit a lot of nitrous oxide quickly," said Sasha Kravchenko, Michigan State Plant, Soil and Microbial scientist and lead author of the study. "But the reason for occurrence of these hot spots has mystified soil microbiologists since it was discovered several decades ago."

It's difficult to study and label an entire field as a source of greenhouse gas emissions when the source is grams of soil harboring decomposing leaves, Kravchenko said. Changing the view from binoculars to microscopes will help improve N2O emission predictions, which traditionally are about 50 percent accurate, at best, the researcher added. 

Nitrous oxide's global warming potential is 300 times greater than carbon dioxide, and emissions are largely driven by agricultural practices, the study said.

"This work sheds new light on what drives emissions of nitrous oxide from productive farmlands," said John Schade, a program director for the <a href="https://www.nsf.gov/">National Science Foundation</a>'s Long-Term Ecological Research program, which co-funded the research with NSF's earth sciences division. "We need studies like this to guide the creation of sustainable agricultural practices necessary to feed a growing human population with minimal environmental impact."

Kravchenko and her team took soil samples from MSU's Kellogg Biological Station Long-term Ecological Research site. Then, in partnership with scientists from the <a href="http://www.uchicago.edu/">University of Chicago</a> at Argonne National Laboratory, they examined the samples at Argonne's synchrotron scanning facilities, a much more powerful version of a medical CT scanner.

The X-ray scanner penetrated the soil and allowed the team to accurately characterize the environments where N2O is produced and emitted.

"We found that hotspot emissions happen only when large soil pores are present," Kravchenko said. "The leaf particles act as tiny sponges in soil, soaking up water from large pores to create a micro-habitat perfect for the bacteria that produce nitrous oxide."

Not as much N2O is produced in areas where smaller pores are present. Small pores, such as in clay soils, hold water more tightly so that it can't be soaked up by the leaf particles, the study said.

The researchers hope the findings will help scientists develop ways to reduce the emission of nitrous oxide from agricultural soils.

Future research will review which plant leaves contribute to higher N2O emissions. Plants with more nitrogen in their leaves, such as soybeans, will more than likely give off more N2O as their leaves decompose. Researchers also will look at leaf and root characteristics and see how they influence emissions, the authors said.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="https://msu.edu/">Michigan State University</a>

Image Credit: <a href="https://msu.edu/">Michigan State University</a>

Decomposing leaves in soil emit greenhouse gas

Tiny bits of decomposing leaves in soil emit nitrous oxide,...

According to a new <a href="http://www.caltech.edu/">Caltech</a> study, water does in fact have a taste and should even be considered as a flavor.

Researchers found that taste cells in mice that relay information to the brain via taste nerves were stimulated by <a href="https://www.earth.com/news/washing-hands-cold-water/">water</a>.

"This was exciting because it implied that some taste cells are capable of detecting water," said graduate student Dhruv Zocchi, first author of the study. 

In order to test which taste cells respond to water, the team genetically and pharmacologically blocked the function of individual cell populations in the mice. For example, when the salt taste receptor was blocked, salt no longer triggered activity in taste nerves, but responses to other tastes were not affected. 

"To our surprise, when we silenced sour taste cells, water responses were also completely blocked," said Yuki Oka, a Caltech assistant professor of biology, "The results suggested that water is sensed through sour taste cells."

In order to prove that the sour cells contribute to water detection, the team used a technique called optogenetics that allowed them to stimulate sour cells with light instead of water. The researchers removed water from the animals' water bottle and made it so that the bottle's spout emitted a blue light when the animals touched it. 

They discovered that thirsty genetically engineered mice would go to the spout for water, encounter the light, and "drink" it. Though the mice were not rehydrated, they kept licking the water source because the light created a sensory cue of water.

Mice usually avoid sour substances such as lemon juice, the researchers said. But when the team stimulated sour cells with light, they did not observe that kind of aversive behavior in the engineered mice.

"These results raise the question: What information about taste are sour cells really relaying to the brain?" Zocchi says. "Maybe sour cells are not directly linked to the unpleasant sourness that we perceive, but instead they may induce a different type of taste, like water, when stimulated."

Stimulation of the cells does not alleviate thirst, Oka said.

"But this finding helps us understand how the brain interprets water signals under normal and thirsty states,” he said. “Next, we would like to tackle the mechanisms by which the hedonic value or 'pleasantness' of sensory inputs are regulated by brain activity.”

The study is published in the journal <a href="http://www.nature.com/neuro/">Nature Neuroscience</a>.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="http://www.caltech.edu/">Caltech</a>

New study says water does have a taste

According to a new Caltech study, water does in fact...

Engaging with children while reading books to them gives their brain a cognitive "boost," a new study found.

The study, based on functional magnetic resonance imaging, reinforces the value of "dialogic reading," where the <a href="https://www.earth.com/news/voluntary-sharing-children-happy/">child</a> is encouraged to actively participate.

"The takeaway for parents in this study is that they should engage more when reading with their child, ask questions, have them turn the page, and interact with each other," said John Hutton, a pediatrician at <a href="https://www.cincinnatichildrens.org/">Cincinnati Children's Hospital Medical Center</a> and lead author of the study. "In turn, this could fuel brain activation--or ’turbocharge’ the development of literacy skills, particularly comprehension, in preschool aged children."

The study used functional MRI scans of 22 girls, age 4, to explore the relationship between engagement and verbal interactivity during a mother-child reading observation and neural activation and connectivity during a story listening task. 

Children exhibiting greater interest in the narrative showed increased activation in right-sided cerebellar areas of the brain. This is the area thought to support cognitive skill acquisition and refinement via connection to language, association and executive function areas, the study said.

"Our findings underscore the importance of interventions explicitly addressing both parent and child reading engagement, including awareness and reduction of distractions such as cellphones, which were the most common preventable barrier that we observed," said Hutton.

Long-term studies are needed beginning in infancy to better understand mother-child factors contributing to healthy brain development and literacy skills since this study does not establish causation, the medical center said.

The study is published in the journal <a href="http://journals.plos.org/plosone/">PLOS One</a>

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="https://www.cincinnatichildrens.org/">Cincinnati Children's Hospital Medical Center</a>

Engaging with children while reading ‘turbocharges’ literacy

Engaging with children while reading books to them gives their...

Aldehydes are organic chemical compounds that are produced in small amounts in our bodies. ConsiderIng aldehydes are also commonly found in our environment, the health risks that are associated with these compounds are alarming. New research suggests that aldehydes found in shampoo and liquor cause cancer by preventing our bodies from repairing DNA damage. 

<a href="https://www.cam.ac.uk/">University of Cambridge</a> Professor Ashok Venkitaraman is the lead author of the study.

“We knew aldehydes were not nice and have been linked to cancer, but we did not know they damage proteins in the cells important for preventing the DNA damage which causes cancer,” said Venkitaraman.

Aldehydes are found in shampoo products we use to wash our hair and in <a href="https://www.earth.com/news/crayfish-alcohol-effects/">liquor</a> that we drink. They are also present in the air from car exhaust and in building materials.  

“We don’t know how much of these chemicals we are breathing in or how long they last in the air after being produced, but aldehydes are found all over the place,” explained Venkitaraman.

Scientists used genetically-engineered human cells to establish how aldehydes could cause cancer. The study, published in the journal Cell, revealed that aldehydes obstruct healthy cells and prevent their defense mechanisms from repairing DNA when they divide. 

By reducing the amount of BRCA2 protein in cells, aldehydes weaken the cells. BRCA2 protein is needed to repair damage to DNA, and if the damage is not repaired it can progress into cancer. 

The study indicates that aldehydes put people at a higher risk of developing breast, ovarian, prostate and pancreatic cancer. Formaldehyde, an odorless gas used in the embalming process, is linked to nose and throat cancer. 

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 

Source: <a href="https://www.cam.ac.uk/">University of Cambridge</a>

Chemicals found in shampoo and liquor may cause cancer

Aldehydes are organic chemical compounds that are produced in small...

Despite scientific evidence that suggests the amount of ice in Antarctica is growing, there is concern about the impact of climate change in this region. Melting ice is making glaciers increasingly unstable. Researchers from <a href="http://www.swansea.ac.uk/">Swansea University</a> are monitoring an enormous rift in an Antarctic ice shelf that is about to produce an iceberg the size of Delaware.

Ice calving is when ice splits off from the edge of a glacier, which usually happens when the glacier expands. An ice shelf in Antarctica, known as <a href="https://www.earth.com/video/massive-iceberg-larsen-c-ice-shelf/">Larsen C,</a> is close to shedding one of the biggest icebergs in recorded history with an area of 1900 square miles. 

A rift in Larsen C suddenly grew by 11 miles in December of 2016, and is now close to 125 miles long. The tip of the opening has shifted in the direction of the front of the ice. The rift has only 8 more miles of ice shelf left before the enormous mass of ice breaks off into the sea. Satellite images also revealed a second division has formed that is 8 miles long. 

In 2002, ice calving caused an ice shelf known as Larsen B to become unbalanced and break into thousands of icebergs. The ice shelf is believed to have been stable for  12,000 years until global warming caused it to explode in a matter of 35 days. Research shows the ice shelf had only begun melting a few years before it collapsed. 

Experts believe the properties of the ice shelf changed and caused the instability.  Melting ice fills crevices with water which then pushes glaciers apart until they shatter. The breakdown of Larsen B is one of the largest on record and believed to have impacted its neighboring ice shelves, including Larsen C. 

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 

Source: <a href="http://www.swansea.ac.uk/">Swansea University</a>

Antarctic ice shelf splitting off to form massive iceberg

Despite scientific evidence that suggests the amount of ice in...

Coastal nesting birds around the world may be be driven to extinction by rising sea levels and more frequent flooding from climate change, according to a 20-year study of Eurasian oystercatchers.

"Our study species, the Eurasian oystercatcher, lives in an area where flooding is becoming more common, posing a threat to the survival of the population,” said Liam Bailey of <a href="https://en.wikipedia.org/wiki/Australian_National_University"> Australian National University</a>. "Our study found no evidence that Eurasian oystercatchers have increased the elevation of their nests, even among birds that lost a nest during a flood.” 

The presence of <a href="https://www.earth.com/news/habitat-fragmentation-predators/">predators</a> or unsuitable vegetation might discourage birds from nesting higher, Bailey said.

A recent study using thousands of bird surveys along the east coast of the United States found consistent declines in coastal marsh birds, the university said.

"Researchers predict that rising sea levels and increased flooding events may drive the saltmarsh sparrow, a coastal species in the U.S. to extinction, possibly even within the next 20 years," Bailey said.

“Like the Eurasian oystercatcher, this species does not appear to be adapting to the changing tidal conditions," he added.

A similar study showed strong declines in coastal bird species along the coast of Northern Europe.

The research team will investigate other possible strategies that birds may use to avoid flooding, such as encouraging birds to lay their nests earlier in the year when floods are less common.

"Our work is part of a growing amount of research that shows the vulnerability of coastal bird species,” he said. “These species may need additional conservation focus in the future."

The research was published in the <a href="http://rstb.royalsocietypublishing.org/">Philosophical Transactions of the Royal Society B</a>.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="https://en.wikipedia.org/wiki/Australian_National_University">Australian National University</a>

Coastal nesting birds face extinction from rising seas, flooding

Coastal nesting birds around the world may be be driven...

Passing skills down through the generations, once believed to an exclusive human trait, has been discovered in chimpanzees, according to a new study.

Primatologists from the <a href="https://www.st-andrews.ac.uk/">University of St Andrews</a> gave chimpanzees the chance to suck through straws to get juice from a large container just outside their enclosure.

A range of different objects were available for the <a href="https://www.earth.com/news/humans-chimpanzees-exhibit-empathy/">chimps</a> to use, from sticks to dip in the juice to various tubes that could be used as straws. 

The most complicated tool was one which needed to be unfolded, with a valve which needed to be unscrewed to create a long straw to reach the juice from the deep container, the university said.

Chimpanzees presented only with the complex option failed to use it. However in other groups, where one chimpanzee had been trained to use the complicated tool, other chimpanzees watched and copied them.

The groups that were not provided with a trained member did see some chimpanzees create this complex behavior by themselves by pooling of partial discoveries by different individuals who had already mastered using the simpler straws.

 “Perhaps the most fundamental thing this study shows is that a group of chimpanzees can appear more intelligent than any single individual – together they can create more advanced steps in cultural evolution,” said the study leader, Andrew Whiten of the University of St Andrews.

The results show that some non-human animals are “better equipped to improve the complexity of their cultural behaviors over time than was previously believed,” said the study’s lead author, Gillian Vale, of the <a href="https://www.utexas.edu/">University of Texas</a>.

The findings are significant for understanding what may have happened in the course of human evolution as new skills were required to deal with radical ecological changes as forests gave way to savannas, with “cumulative culture” accelerating particularly during ice ages, the scientists said.

The ability of humans to evolve these skills over generations by building on previous knowledge, a process known as “cumulative culture”, was thought to separate humanity from the rest of nature.

The new research suggests that apes may indeed share some of the foundations of human culture, the university said.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="https://www.st-andrews.ac.uk/">University of St Andrews</a>

Chimpanzees can pass down skills to next generation

Passing skills down through the generations, once believed to an...

An hour after President Donald Trump’s <a href="https://www.earth.com/news/trump-decision-paris-climate-agreement/">announced</a> the U.S. withdrawal from the Paris climate agreement Thursday, three state governors said they will continue to support the international pact.

“This is an insane move by this president," California Gov. Jerry Brown said, describing the decision as "deviant behavior from the highest office in the land."

Brown, Gov. Jay Inslee of Washington state, and Gov. Andrew Cuomo of New York announced a new pact called the U.S. Climate Alliance to uphold the Paris climate agreement.

"We governors are going to step into this cockpit and fly the plane," Inslee told reporters. "The president wants to ground it - we're going to fly it."

Under the Paris agreement, the United States voluntarily committed to reducing polluting emissions by 1.6 billion tons by 2025.

The Democratic governors' new pact commits to that same goal, which requires a 26 to 28 percent reduction in emissions from 2005 levels.

Specific targets haven't been set for each state. California, New York and Washington together account for about 10 percent of the country's greenhouse gas emissions, Brown's office said.

California is already working to reduce greenhouse gas emissions by 40 percent from 1990 levels by 2030.

Brown is heading to China to discuss emissions-reduction policies with other leaders and has promised to fill the void left by the Trump administration. In California, Brown is battling to reauthorize a cap-and-trade program that expires in 2020, a key piece of his political legacy. He's said California's economy is proof that combating climate change isn't the economic deadweight Trump suggests.

Washington state is also moving ahead with capping carbon emissions and requiring power plants and oil refineries to reduce emissions over time. In New York, Cuomo announced he would use executive orders to ensure his state continues to abide by the Paris agreement.

West Virginia Coal Association Senior Vice President Chris Hamilton said U.S. withdrawal from the Paris accord would build confidence in U.S. mining and industry even if it wouldn't make major changes on the ground. Trump promised during his campaign to bring back coal mining jobs.

Republican politicians and representatives of the coal industry cheered Trump's action.

"President Trump's courageous decision to exit the Paris Accord recognizes that the United States is not legally bound to an Obama-era agreement that set unrealistic emissions targets at the expense of billions of American taxpayer dollars without the approval of Congress," said Texas Attorney General Ken Paxton, who joined nine other states in urging Trump to leave the agreement.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="http://hosted.ap.org/dynamic/stories/U/US_TRUMP_CLIMATE_STATE_ALLIANCE_NYOL-?SITE=AP&amp;SECTION=HOME&amp;TEMPLATE=DEFAULT&amp;CTIME=2017-06-01-19-55-33">AP</a>

NY, CA, and Washington team up to form climate pact

An hour after President Donald Trump’s announced the U.S. withdrawal...

Almost immediately after President Trump <a href="https://www.earth.com/news/trump-decision-paris-climate-agreement/">announced</a> that he will withdraw the United States from the Paris Climate Agreement, leaders of France, Germany, and Italy reacted by saying that the treaty cannot be renegotiated.

Former Secretary of State Madeleine Albright tweeted, "Withdrawing from the Paris accord turns a symbol of American leadership into a symbol of American isolation. Damages our economy and security."

President Trump defended his decision to withdraw from the treaty by explaining the agreement would place our country's  “abundant energy reserves” out of reach, “leaving millions and millions of families trapped in poverty and joblessness.”

Australian energy and environment minister Josh Frydenberg expressed his disappointment with Trump’s decision but reaffirmed his government’s dedication to the Paris Agreement. 

“We reiterate our full commitment to the Paris Accord,” <a href="https://www.theguardian.com/environment/live/2017/jun/01/donald-trump-paris-climate-agreement-live-news?page=with:block-59308ac2e4b00493c827856a#block-59308ac2e4b00493c827856a">Frydenberg told ABC</a>. “We believe that the targets we agreed to, the 26% to 28% reduction in emissions by 2030 on 2005 levels are reasonable, are achievable. I do believe that it is still a very meaningful agreement. You have more than 190 countries that signed on and in record time, 146 countries have ratified. So even without the US, around 70% of the world’s emissions are covered by that agreement.”

Texas Republican Senator Ted Cruz supports Trump’s decision.

“This is great news for family budgets, which under the Obama Paris plan would have seen significant increases in costs for utilities and nearly everything powered by fossil fuels, which accounts for 82 percent of all the energy generated in the United States,” Cruz said.

In a statement made after President Trump’s announcement on Thursday, former president Barack Obama said, “The nations that remain in the Paris Agreement will be the nations that reap the benefits in jobs and industries created. I believe the United States of America should be at the front of the pack. But even in the absence of American leadership; even as this Administration joins a small handful of nations that reject the future; I’m confident that our states, cities, and businesses will step up and do even more to lead the way, and help protect for future generations the one planet we’ve got.” 

Regardless of President Trump’s decision to leave the Paris Agreement, urgent attention is needed to resolve the global climate crisis we are facing. The worldwide campaign initiated by this historical plan will not be thwarted by one president's decision not to comply. 

German environment minister Barbara Hendricks said, “The world’s climate will survive for eight years without the US.”

Still, the United States leads the world in carbon dioxide emissions - second only to China, and so the dissatisfaction of leaders at home and abroad is perhaps justifiable. 

“By walking away from this pact, President Trump is abandoning America’s leadership position in the fight against the climate crisis and is sending a strong message to the rest of the world to create, design and manufacture clean energy solutions and create jobs elsewhere,” said House minority leader Nancy Pelosi. “If President Trump wants nations like China and India to take stronger and swifter action on climate, then he should do so through the accountability and enforcement provisions in the Paris Agreement, not by breaking our word and storming out of the room.”

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

World leaders react to Trump’s decision to leave Paris Agreement

Almost immediately after President Trump announced that he will withdraw...

For years, we have believed that it takes hot water to remove harmful <a href="https://www.earth.com/news/sponge-bacteria-toxic-compounds/">bacteria</a> from our hands. This has led to strict regulations in the restaurant and food industry that drive up utility costs. However, an emerging study finds there is no need to burn the germs off your hands because cold water is just as effective.

Researchers enlisted the help of 21 volunteers for the study. Over a six-month period of time, the participants were exposed to harmless bacteria. They washed their hands for ten seconds at different temperatures with various amounts of soap. The study revealed that the same amount of germs were removed regardless of the temperature of the water or the amount of soap used.

In the United States, many antibacterial soaps were banned last year after companies failed to prove they were safe to use in the long term. The FDA took action against 19 chemicals that were contained in many hand and bar soaps. 

Dr Janet Woodcock is the director of the FDA's center for evaluation and research. 

“Consumers may think antibacterial washes are more effective at preventing the spread of germs, but we have no scientific evidence that they are any better than plain soap and water,” explained Dr. Woodcock. “In fact, some data suggests that antibacterial ingredients may do more harm than good over the long term.”

Donald Schaffner is a professor of Food Science at <a href="http://www.rutgers.edu/">Rutgers University</a> and an author of the hand-washing study. He suggests the findings of this study can go a long way in saving money and conserving energy. 

“This study may have significant implications towards water energy, since using cold water saves more energy than warm or hot water,” said Schaffner.

The findings of this study, published in the Journal of Food Protection, indicate that food industry policies should address the length of time employees wash hands rather than the temperature of the water that is used. 

“I think this study indicates that there should be a policy change,” concluded Schaffner. “We are wasting energy to heat water to a level that is not necessary.”

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 

Source: <a href="http://www.rutgers.edu/">Rutgers University</a>

Washing hands in cold water is just as effective as hot water

For years, we have believed that it takes hot water...

Updated June 2

----

Today, President Trump announced that the United States will withdraw from the Paris Climate Agreement. The pact, which is an unprecedented global strategy to fight climate change, has been signed by nearly every other country in the world. The decision comes as a major blow to environmentalists, and frankly, anyone who cares about the planet.

"We're getting out. But we will start to negotiate and we'll see if we can make a deal that's fair," Trump said in a speech from the White House Rose Garden. "And if we can, that's great. And if we can't, that's fine."

"The Paris climate accord is simply the latest example of Washington entering into an agreement that disadvantages the United States, to the exclusive benefit of other countries, leaving American workers, who I love, and taxpayers to absorb the cost in terms of lost jobs, lower wages, shuttered factories and vastly diminished economic production."

According to the <a href="https://www.washingtonpost.com/">Washington Post</a>, “the decision followed an intense struggle within the administration over the fate of the agreement, with Ivanka Trump, Secretary of State Rex Tillerson and business leaders urging the president to remain in the accord.” 

Over the course of his presidential campaign, Trump vowed over and over to exit the deal within the first 100 days of his presidency. While he didn’t quite hit his self-imposed deadline, he did manage to make major changes to the Environmental Protection Agency (EPA).

Newly-appointed EPA Administrator Scott Pruitt, former Attorney General of Oklahoma, has a history of challenging environmental regulations in favor of big oil and gas companies. 

Together, President Trump and Pruitt have undermined former President Obama’s 2013 Climate Action Plan, criticized the Paris Agreement, and rejected scientific facts about climate change. Trump has expressed the opinion that the terms of the Paris deal forces America to make sacrifices that will hurt the economy with no tangible benefits.

Leaders recently left the G7 Summit in Italy with no confidence that President Trump supports global efforts to fight climate change. In a public statement made after the summit, <a href="http://www.independent.co.uk/news/world/americas/us-politics/trump-g7-summit-latest-climate-change-consensus-paris-agreement-angela-merkel-a7759231.html">G7 leaders stated</a>, “The United States of America is in the process of reviewing its policies on climate change and on the Paris Agreement and thus is not in a position to join the consensus on these topics.”

Corporate America has urged Trump to keep the United States in the Paris Accord. 25 big businesses including Apple, Facebook, and Google signed a letter to Trump expressing that the terms of the agreement are best for America's self-interest, both environmentally and economically. Other industry giants such as Exxon and General Electric also made efforts to convince the President to keep our commitment to the deal. 

“Energy needs are a function of population and living standards,” <a href="https://www.google.com/amp/amp.timeinc.net/fortune/2017/06/01/apple-google-facebook-trump-stay-paris-accord/%3Fsource%3Ddam">Exxon CEO Darren Woods</a> stated in Dallas Wednesday. “When it comes to policy, the goal should be to reduce emissions at the lowest cost to society,” said Woods.

According to the <a href="https://www.washingtonpost.com/">Washington Post</a>, Woods wrote Trump a letter dated May 9th in what has been called “a last-ditch personal plea” to keep our end of the deal. Woods said this is critical in order for the United States to remain “at the negotiating table to ensure a level playing field” on energy sources.

While awaiting today's much-anticipated decision, European Union leaders teamed up with China and vowed to move forward with their commitment to the Paris Agreement. The position of these countries to follow through with the terms of the deal were drafted in a joint statement that will be released Friday, regardless of the President's decision. 

Trump’s decision to retract America's willingness to participate in this historical effort to curb climate change will not be easily forgotten by the other great powers of the world.  Americans will now be faced with the uncertainty of when and how climate change will be dealt with here in the United States.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff">Earth.com</a> Staff Writer 

Source: <a href="https://www.washingtonpost.com/">Washington Post</a>

Trump withdraws U.S. from Paris Climate Agreement

Updated June 2 ---- Today, President Trump announced that the...

Researchers have discovered an enzyme in mice brains that could allow doctors to one day erase memories in humans that cause post-traumatic stress disorder.

Scientists at <a href="http://www.med.upenn.edu/">University of Pennsylvania’s Perelman School of Medicine</a> discovered in mice brains a key metabolic enzyme that works directly within the nucleus of neurons to turn genes on or off when new memories are being established.

“This enzyme, called acetyl-CoA synthetase 2, or ACSS2, ‘fuels' a whole machinery of gene expression ‘on site’ in the nucleus of nerve cells to turn on key memory genes after learning,” said senior author Shelley L. Berger  “We found both direct gene-association of ACSS2 and a role for it in neurons to regulate learning and memory – two completely unanticipated novel discoveries.”

In humans, the researchers hope the findings will lead to a way to prevent the “laying-down” of traumatic memories -- or perhaps even erase them by blocking ACSS2 in the hippocampus, a brain region that processes long-term memory.

It could also lead to new treatments for <a href="https://www.earth.com/news/women-low-income-anxiety/">anxiety</a> and depression, the authors said.

“We suspect that ACSS2 might play a role in memory impairment in neurodegenerative disorders,” said first author Philipp Mews, a former graduate student in Berger’s lab.

Working with mice, the researchers found that blocking ACSS2 expression impaired long-term memory of where objects were placed in a study chamber.

These mice did not investigate a moved object on the second day, while control group mice did.

“This is because, without ACSS2, the mice had no molecular path to engage memory genes to lock in where the objects were placed,” Mews said.

This decrease in ACSS2 in specific brain regions impairs the read-out of key genes that function to form new memories or to update old ones, the researchers added.

The study is published in the journal <a href="http://www.nature.com/nature/">Nature</a>.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="http://www.med.upenn.edu/">Perelman School of Medicine</a>

The enzyme that could allow people to erase bad memories

Researchers have discovered an enzyme in mice brains that could...

Scientists are transforming chocolate into a functional food by infusing it with probiotics and prebiotics, aiming to create a treat that satisfies cravings while supporting gut health. 



The challenge lies in maintaining chocolate's beloved texture and flavor while adding health benefits.



<figure class="wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
https://youtu.be/Ug657J67iEo?si=w96YjGMsg939LD_3
</div></figure>



Probiotics - beneficial microbes that balance gut bacteria and aid digestion - are typically fragile and can be destroyed by stomach acid or processing. 



Prebiotics act as food for these microbes, helping them thrive. Together, they form "synbiotics," a powerful health combination.



Researchers Smriti Gaur and Shubhi Singh from India's Jaypee Institute of Information Technology took an innovative approach, using natural prebiotics like corn and honey instead of complex processing methods. 



They created five chocolate varieties: a control and four synbiotic versions containing different combinations of prebiotics, probiotics (Lactobacillus strains), and flavor enhancers (cinnamon or orange).



Laboratory simulations of human digestion showed the probiotics remained viable for over five hours, suggesting they could survive long enough to benefit gut health.



Taste tests were positive, with researchers particularly enjoying the orange-flavored variety, describing it as having "vibrant citrus notes" complementing the "rich cocoa" with a "luxurious" texture.



This research represents just the beginning. With further refinement of strains, textures, and flavors, chocolate could evolve beyond mere indulgence to become a functional food that nourishes while it delights.



The study is published in the journal <a href="https://pubs.acs.org/doi/10.1021/acsfoodscitech.4c00741" target="_blank" rel="noreferrer noopener">ACS Food Science &amp; Technology</a>.

Is chocolate the next nutritional powerhouse?

Scientists are transforming chocolate into a functional food by infusing...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"]</div>



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



---



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

[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="G9bUoxcjr4-2511624-12187" type="single"]</div>



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;



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="3upvlAaHgO-2256633-12187" type="single"]</div>



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;



---



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

[sendtonews key="3upvlAaHgO-2256633-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="LvS8v8bp9z-2564889-12187" type="single"]</div>



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;



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="iuA5mpp3jv-1641775-12187" type="single"]</div>



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;



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"]</div>



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



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="X0f6OHYoI4-2310561-12187" type="single"]</div>



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



---



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



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

How does salt makes things taste better?

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JRaP49ISmm-2357509-12187" type="single"]</div>



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



---



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



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

Santiago, Chile in South America

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

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"]</div>



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;



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="EjmSP20gQK-2593093-12187" type="single"]</div>



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;



---



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



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

Remote sensing will revolutionize the way we monitor trees

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"]</div>



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;



---



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

[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="oL4FnPTGCV-2384527-12187" type="single"]</div>



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



---



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



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

The province of Zaragoza in northeast Spain

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="f8fukm28Vz-2491833-12187" type="single"]</div>



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



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0879czfG3k-1785905-12187" type="single"]</div>



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



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"]</div>



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



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0dEcERCq61-2283382-12187" type="single"]</div>



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;



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="3UUsNkFOuS-2487333-12187" type="single"]</div>



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



---



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



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

2022 illustrated the consequences of a warming climate

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

Earth,Like,Exoplanet,3d,Render

<div class="wp-block-sendtonews-playerselector">[sendtonews key="QIoVYJqRBi-2434608-12187" type="single"]</div>



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)



---



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JbW4VsY53O-1632195-12187" type="single"]</div>



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;



---



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...

News coming your way