Scientists have engineered wheat to nudge soil bacteria into producing plant-ready nitrogen, a shift that could cut fertilizer use, curb pollution, and lower farm costs without sacrificing yields. 



The plants overproduce a natural compound, leak the excess into the soil, and in doing so jumpstart nearby microbes that “fix” nitrogen from the air into forms crops can use.



In this work, a team at the <a href="https://www.ucdavis.edu/" target="_blank" rel="noreferrer noopener">University of California, Davis</a>, led by Eduardo Blumwald, used <a href="https://www.earth.com/news/crispr-used-to-remove-extra-chromosomes-in-down-syndrome-and-restore-cell-function/">CRISPR</a> to dial up a wheat metabolite and tested the effect under low-nitrogen conditions.



The study extends earlier proof-of-concept in rice, with efforts underway to translate the approach to other staple cereals.



<h2 class="wp-block-heading" id="h-synthetic-nitrogen-fuels-global-harvests">Synthetic nitrogen fuels global harvests</h2>



Worldwide, synthetic nitrogen fuels modern harvests but at a steep environmental and economic price. Wheat alone accounts for about 18 percent of global nitrogen fertilizer use. Of the hundreds of millions of tons produced each year, plants capture only 30 to 50 percent.



The remainder washes into rivers and coasts, feeding oxygen-starved <a href="https://www.earth.com/news/excess-nutrients-are-creating-ocean-dead-zones/">dead zones</a>, or escapes as nitrous oxide, a potent greenhouse gas. For smallholder farmers, especially in low-income regions, cost and access make fertilizer a gamble.



“In Africa, people don't use fertilizers because they don’t have money, and farms are small, not larger than six to eight acres,” Blumwald said. “Imagine, you are planting crops that stimulate bacteria in the soil to create the fertilizer that the crops need, naturally. Wow! That’s a big difference!”



<h2 class="wp-block-heading" id="h-wheat-learns-microbes-nitrogen-trick">Wheat learns microbes’ nitrogen trick</h2>



Nitrogen fixation is carried out by specialized bacteria using an enzyme called nitrogenase, which only functions in low-oxygen conditions. Legumes such as beans and peas solve this by hosting the <a href="https://www.earth.com/news/plants-have-root-microbiomes-like-humans-do-vital-for-survival-defense/">microbes</a> in root nodules, which are tiny oxygen-poor chambers. 



Cereals like wheat lack nodules, which is why they rely on bagged nitrogen. Rather than trying to give cereals nodules or force microbes to colonize roots - a strategy that has long struggled to stick - the team flipped the problem.



The researchers screened roughly 2,800 plant-made chemicals and found a small set, including flavones, that prompt soil <a href="https://www.earth.com/news/when-bacteria-get-hungry-they-turn-on-each-other/">bacteria</a> to form protective biofilms. Those sticky microbial coats reduce oxygen exposure enough for nitrogenase to work.



“For decades, scientists have been trying to develop cereal crops that produce active root nodules, or trying to colonize cereals with nitrogen-fixing bacteria, without much success. We used a different approach,” Blumwald said.



“We said the location of the nitrogen-fixing bacteria is not important, so long as the fixed nitrogen can reach the plant, and the plant can use it.”



<h2 class="wp-block-heading" id="h-gene-edit-flips-fertilizer-switch">Gene edit flips fertilizer switch</h2>



Using CRISPR, the researchers boosted wheat’s production of apigenin, a common flavone. Plants kept what they needed and exuded the surplus through their roots.



In soil tests, the extra apigenin encouraged local bacteria to spin up biofilms, protecting nitrogenase, fixing nitrogen, and making ammonium available for the crop. In low-fertility conditions, edited wheat assimilated the microbially supplied nitrogen and outyielded control plants.



The amazing thing lies in what the plant does automatically. It manufactures the signal, leaks it when nitrogen is scarce, and benefits from the neighborhood effect. No external inoculants are required, and the microbes remain free-living in the <a href="https://www.earth.com/news/new-type-of-microbes-found-earths-deep-soil-critical-zone/">soil</a> rather than locked inside a root.



<h2 class="wp-block-heading" id="h-pollution-down-resilience-up"><a></a>Pollution down, resilience up</h2>



If scaled, the approach could trim the fertilizer footprint that drives water pollution and climate forcing in wheat and other crops. Less soluble nitrogen applied to fields means less runoff during storms, smaller algal blooms, and fewer oxygen crashes in <a href="https://www.earth.com/news/climate-shock-lakes-are-losing-oxygen-faster-than-expected/">lakes</a> and coastal zones. 



Cutting back on industrial nitrogen also reduces upstream emissions from natural-gas-intensive fertilizer production.



Because the mechanism amplifies microbial activity already present in many soils, it may also help stabilize yields under input constraints. In places where fertilizer is scarce or prohibitively expensive, the crop’s own chemistry becomes a lever to unlock atmospheric nitrogen.



<h2 class="wp-block-heading" id="h-billions-saved-with-less-fertilizer">Billions saved with less fertilizer</h2>



The United States alone saw nearly $36 billion in fertilizer spending in 2023. Cereals cover close to 500 million acres nationally. Even modest reductions in inputs translate into real money while lowering risk in volatile markets.



“Imagine, if you could save 10 percent of the amount of fertilizer being used on that land,” Blumwald said. “I’m calculating conservatively: That should be a savings of more than a billion dollars every year.”



Those savings would not come solely from buying less nitrogen. Fewer passes to apply fertilizer mean lower fuel use and less soil compaction. Reduced losses to waterways could also ease regulatory pressure and improve community relations in vulnerable watersheds.



<h2 class="wp-block-heading" id="h-proving-stability-across-soil-types">Proving stability across soil types</h2>



The road from greenhouse pots to farm fields is long, but the milestones are clear. Researchers will need to confirm that the nitrogen boost holds under diverse soils, climates, and microbiomes, and that it plays nicely with existing rotations and management. 



They will need to show stable performance across seasons and varieties, measure effects on soil ecology, and ensure that yields and grain quality are maintained.



Because the edit increases a native metabolite rather than introducing a foreign gene, regulatory pathways may be more straightforward in some jurisdictions. Still, farmers and policymakers will want transparent data on environmental outcomes, <a href="https://www.earth.com/news/how-solar-power-can-transform-urine-into-fertilizer/">fertilizer</a> savings, and return on investment.



If the results scale, gene-edited cereals like wheat that recruit their own microbial fertilizer factories could become a practical tool in the nitrogen toolbox - cutting costs where budgets are tight, trimming pollution where waters run foul, and building resilience in the breadbaskets of a warming world.



The study is published in the <a href="https://onlinelibrary.wiley.com/doi/10.1111/pbi.70289" target="_blank" rel="noreferrer noopener">Plant Biotechnology Journal</a>.



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Gene-edited wheat turns soil microbes into fertilizer

Scientists have engineered wheat to nudge soil bacteria into producing plant-ready nitrogen, a shift that could cut fertilizer use, curb pollution, and lower farm costs without sacrificing yields. The plants overproduce a natural compound, leak the excess into the soil, and in doing so jumpstart nearby microbes that “fix” nitrogen from the air into forms crops can use. In this work, a team at the University of California, Davis, led by Eduardo Blumwald, used CRISPR to dial up a wheat metabolite and tested the effect under low-nitrogen...

The story of the city mouse and the country mouse may be truer than we thought. A new study has found that plants and animals that live in urban areas are being changed by city life.

The <a href="http://www.pnas.org/content/early/2017/01/01/1606034114.full">analysis</a>, led by Dr. Marina Alberti of the <a href="http://www.washington.edu/">University of Washington</a>, looked at 1,600 cases around the world. They found that animals and plants living in cities showed changes in body size along with changes in behavior and reproduction habits compared to their country cousins.

“Humans challenge the phenotypic, genetic, and cultural makeup of species by affecting the fitness landscapes on which they evolve,” Alberti and her co-authors wrote in the analysis. “Recent studies show that cities might play a major role in contemporary evolution by accelerating phenotypic changes in wildlife, including animals, plants, fungi, and other organisms.”

For example, one 2008 study found that wildlife and plant populations exposed to human activity – especially activity in which humans alter the natural world, such as overharvesting or pollution – show faster rates of evolutionary change.

The researchers looked at another study that recorded changes in the behavior of crows and ravens in response to human behavior. That 2005 study found that social species with the ability to create and evolve their own “culture,” such as crows, can adapt and change that culture to take advantage of city life.

Alberti and her fellows used their “meta-analysis” to try to piece together the role that urbanization as a whole, rather than just individual human behaviors, plays in plant and animal evolution. That included widespread habitat modification like paved roads, street lights, and tall buildings; social interactions among species and between animals and humans; and disturbances of the natural ecosystem like flooding (though flood prevention or damming rivers) or pollution.

“By explicitly linking urban development to traits that affect ecosystem function, we can map potential eco-evolutionary implications of emerging patterns of urban agglomerations and uncover insights for maintaining key ecosystem functions upon which the sustainability of human well-being depends,” they wrote.

The analysis was published in <a href="http://www.pnas.org/">Proceedings of the National Academy of Sciences</a>.

City life may influence plant and animal evolution

The story of the city mouse and the country mouse...

A new, open source plant database could help farmers choose top-producing bioenergy crops. To show the database's value, the scientists who developed it used it to show that Miscanthus yields more than twice as much biolfuel as switchgrass in the U.S.

Shared databases like this one are becoming more popular for plant science, climate change, and ecology research. But databases for biomass crops are lacking, Dr. Stephen Long said. The <a href="http://illinois.edu/">University of Illinois</a> professor was the study's lead author.

"To understand yield trends and variation across the country for our major food crops, extensive databases are available – notably those provided by the <a href="https://www.nass.usda.gov/">USDA Statistical Service</a>," he said. "But there was nowhere to go if you wanted to know about biomass crops, particularly those that have no food value such as Miscanthus, switchgrass, willow trees, etc."

To collect a useful mass of data for these crops, researchers at the Carl R. Woese Institute for Genomic Biology's <a href="http://www.energybiosciencesinstitute.org/">Energy Biosciences Institute</a> came up with <a href="https://www.betydb.org/">BETYdb</a>. The open-source repository for physiological and yield data will aid in future bioenergy research, the researchers said.

The plant database also supports automated data collection as well as big data analysis. The latter is important, because BETYdb already contains more than 40,000 open-access records.

“By making all of this data open access, we hope that researchers can identify new plants and best practices for biomass production," first author Dr. David LeBauer said. "We've been using these data not only to summarize what has been observed in field trials, but also to identify new crops and predict productivity in new environments."

To show the database’s value, scientists used the plant database to definitively establish that Miscanthus has a yield 2.4 times higher than switchgrass. The difference held up under a wide range of management and environmental conditions, such as fertilization rates, stand ages, and planting densities.

Miscanthus was originally grown only in Europe. There, it was twice as productive as switchgrass, a North American native, regardless of temperature, water, or nitrogen.

"This was based on limited data and did not take into account the breeding improvements in switchgrass that were occurring," Long said. "Now that Miscanthus is grown in North America along with many improved cultivars of switchgrass we wondered: does the remarkable two-fold difference in yield still hold? And it does."

The research was published in the journal <a href="http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2486">Global Change Biology</a>. The <a href="https://www.nsf.gov/">National Science Foundation</a> and the Energy Biosciences Institute funded the study.

New plant database could set the pace for biofuel production

A new, open source plant database could help farmers choose...

New research has been published in the journal <a href="http://www.sciencemag.org/">Science</a> outlining the discovery of a 52-million-year-old fossilized fruit in South America. This plant family’s history is largely unknown because so few samples have been found in the fossil record. The family of plants, nightshades, includes foods such as potatoes, tomatoes, and peppers – however, given this fruit’s age, it’s probably best left uneaten.

This ancient fruit was found in a fossilized rainforest in Patagonia, where, as N. Ruben Cuneo of the Museum of Paleontology Egidio Feruglio reports, these discoveries “are probably destined to revolutionize some traditional views on the origin and evolution of the plant kingdom.” Many researchers believe this area will yield many more discoveries of fossil plants.

Peter Wilf, a professor of geosciences at <a href="http://www.psu.edu/">Pennsylvania State University</a>, led the team that discovered the fossilized plant. He told BBC News, “Here we have this discovery of these incredibly rare, delicate fossils – here you have a berry surrounded by this papery calyx – it’s almost unheard of that such a thing could be fossilized.”

The fossilized fruit is of the genus Physalis, belonging to the family Solanaceae, or nightshade, which includes flowering plants such as tobacco and petunias. The berry is also closely related to tomatillos and ground cherries.

It was previously believed tomatillos and ground cherries evolved more recently – around the time the Andes appeared. Scientists say this discovery shows the origin of the genus goes back tens of millions of years, much further than previously thought.

In the much warmer world of 50 million years ago, South America was closer to Antarctica and Australia than it is today.

Wilf further emphasized the importance of this discovery, explaining, “It’s the only fossil fruit ever found in this whole group of plants, that now has over 2,000 species. A lot of the evolutionary history of life, especially plants, which are rare as fossils, is largely unknown.”

The story of the 52 million year-old fossilized fruit

New research has been published in the journal Science outlining...

The majestic beauty of Caribbean coral reefs is largely dependent on the balance between the coral and algal growth. Otherwise, algae will smother the coral, having a devastating effect on both the health and beauty of the reef. 

That’s exactly what took place in the Caribbean beginning in the early 1980s. At that time, Caribbean coral reefs depended on long-spined black sea urchins to consume the algae and keep levels balanced. But a mysterious disease began killing off these long-spined urchins, a phenomenon first discovered by <a href="https://www.stri.si.edu/">Smithsonian Tropical Research Institute</a> (STRI) scientist Harilaos Lessios in 1983 at the Atlantic entrance to the Panama canal. As the urchins died off, the reef’s only other hope for algal maintenance were parrotfish. But large parrotfish populations were simultaneously being ravaged by rampant overfishing. 

The result was chronic algal overgrowth that smothered reefs across the Caribbean and continued for years. But according to a new report from STRI marine biologists Catie Kuempel and Andrew Altieri, Caribbean coral reefs may have found new heroes: smaller urchins and finger-sized parrotfish.

Kuempel and Altieri set out to examine the scene on the seafloor in Bocas del Toro, Panama. While they found that many reefs had already died, they were surprised to see much lower levels of algae. The team determined that the most commonly seen algae-eating seafloor grazers were much smaller sea urchins, Echinometra viridis, and tiny parrotfish, Scarus iseri. For the most part, this species of parrotfish managed to avoid the perils of overfishing due to their size. What both the urchins and parrotfish lacked in physical size compared to their predecessors, they compensated for in larger numbers.

Kuempel and Altieri propose that working as a team, these tiny urchins and parrotfish could be capable of restoring the algal balance in degraded Caribbean coral reefs.

"These dollhouse-sized species came the rescue of reefs in Panama, and may be important elsewhere as well," said Altieri.

The STRI team published their findings in the journal <a href="http://www.nature.com/articles/srep39670">Nature</a>.

Tiny grazers could be the new heroes of Caribbean coral reefs

The majestic beauty of Caribbean coral reefs is largely dependent...

Could the same process that turned plant matter into fossil fuels have caused an oxygen spike and explosion of new animal life 500 million years ago?

That’s what researchers from the <a href="http://www.wisc.edu/">University of Wisconsin-Madison</a> think.

“Why is there oxygen in the atmosphere? The high school explanation is ‘photosynthesis.’ But we’ve known for a long time … that building up oxygen requires the formation of rocks like black shale,” study co-author Dr. Shanan Peters said in a <a href="http://news.wisc.edu/fossil-fuel-formation-key-to-atmospheres-oxygen/">press release</a>.

Photosynthesis alone probably didn't cause the Earth’s oxygen spike, the researchers said. The process had already been around for at least 2.5 billion years, after all.

Instead, rapid sedimentation that buried organic matter may have allowed photosynthesis to shine as never before.

As organic matter decomposes, it produces carbon, which binds to oxygen molecules and forms carbon dioxide. Quick burial traps the carbon, and that oxygen stays carbon-free and breathable.

The process that buried plant matter under soil, eventually turning it into shale and fossil fuels, also blocked that carbon from entering the atmosphere, Peters said. That caused the Cambrian oxygen spike, which in turn sparked an explosion of life.

To prove the theory, Peters and postdoctoral fellow Jon Husson used the data tool <a href="https://macrostrat.org/">Macrostrat</a>. The tool is a collection of geological data from throughout North America.

They generated parallel graphs showing oxygen levels in Earth’s atmosphere alongside sedimentation rates through Earth’s history. Both graphs show a massive spike 500 million years ago. They also share smaller spikes.

The two scientists admit that so far, they have mainly shown correlation, not causation. But they also point to current atmospheric conditions, where the burning of carbon-rich fossil fuels seems to correlate with lower oxygen levels and higher carbon dioxide.

If the pair are right, their theory also suggests a potential fix to rising carbon dioxide levels in the atmosphere.

“The secret to having oxygen in the atmosphere is to remove a tiny portion of the present biomass and sequester it in sedimentary deposits. That’s what happened when fossil fuels were deposited,” Husson said.

The study was published online and will appear in the February issue of the journal <a href="https://www.journals.elsevier.com/earth-and-planetary-science-letters/">Earth and Planetary Science Letters</a>.

Scientists seek to solve mystery of Cambrian oxygen spike

Could the same process that turned plant matter into fossil fuels...

Researchers from the <a href="http://www.calacademy.org/">California Academy of Sciences</a> identified 133 new species this year. The findings include ants, beetles, fish, plants, and even a new shark.

The team explored five continents and three oceans. More than 12 Academy scientists teamed up with several dozen international collaborators to describe their discovery.

The Academy’s Chief of Science Dr. Shannon Bennett says, “"Biodiversity scientists estimate that we have discovered less than 10% of the species on our planet.”

By exploring uncharted territory, researchers aim not only to discover new species but also to uncover the impact these species may have on modern science and technology.

“Species live together in rich networks that thrive on complexity whether we can see it or not. Even the tiniest organism can be beautiful and important," says Bennett.

The Academy expedition found a new species of groppo 487 feet under water. This distinctive fish species is pink and yellow. The significance of unearthing the brilliantly-colored fish is that it is the deepest discovery ever made by human hands.

"This groppo is the most beautiful fish I've ever seen," says Rocha, a co-leader of the Academy's mission. "But beyond its looks, it's a reminder that we know very little about the mysterious half-lit reefs we call the twilight zone. We need to understand the life inside these largely-unexplored deeper reefs because they may help us understand how the oceans respond to great change."

Other discoveries made by the Academy scientists include “Dracula ants,” armored lizards, and gray-haired bee flies. A new bird virus was also identified this year that solved the decade-long mystery of wild birds with deformed beaks.

---

Credit: Earth.com author Connor Ertz

Researchers discover 133 new species of plants and animals

Researchers from the California Academy of Sciences identified 133 new...

A team of researchers from around the world, led by ecologist Dr. Marcell Peters, conducted a four-year long study on Mount Kilimanjaro to answer one of science’s most debated questions…why is there greater species diversity in the tropics than in Arctic regions?

For years, the contrast in species diversity between Earth’s Artic regions and tropical latitudes has been widely discussed. Tropical regions tend to have a great variety of plant and animal species, while the artic regions have moderate to low diversity. Professor Ingolf Steffan-Dewenter from the <a href="https://www.uni-wuerzburg.de/en/ueber/university/">University of Würzburg</a> says that the cause of this uneven distribution “has intrigued ecologists for quite some time… Already about ten years ago, the publishers of Science declared that to be one of the 25 most important questions of science to be answered yet.”

This question has been subject to controversy. One common hypothesis was that the primary productivity of a habitat is the key variable in the number of species living there. Primary productivity refers to the rate at which energy is converted by photosynthetic or chemosynthetic autotrophs into organic substances. Another hypothesis is that the rate of evolution and speciation is dependent upon temperature; the warmer the climate is, the more species diversity is present.

All of these hypotheses had only been examined through focusing on selected groups of species. The variety of results was never conclusive enough to point to one hypothesis. That is until Dr. Peters and his research unit “FOR1246” published their results in the journal Nature Communications.

Their unique study tackled the terrain of Mount Kilimanjaro, which has one of the Earth’s largest climatic gradients. This allowed the researchers to examine many plant and animals groups in parallel, which had yet to be done. Overall, the 38 scientists examined eight groups of plants and 17 groups of animals, covering an area that stretched from the savannahs at the base of the mountain to the habitats at an altitude above 4,500 meters, where plants could barely survive.

The data across all groups were collected over the same areas along the same period of time. This allowed the scientists to analyze the biodiversity of not only each individual group, but entire communities as well.

At its conclusion, the study revealed that species diversity within communities is mainly determined by temperature. The researchers found that the warmer the temperature, the greater the diversity of plants and animals. Dr. Peters said, “The more groups of animals and plants you investigate in parallel, the greater the significance of temperature for explaining biodiversity, whereas the importance of all other variables decreases accordingly.”

The researchers believe this study reveals significant evidence supporting the hypothesis that temperature is the most important factor for distribution patterns of species. It’s possible that their four years of work may have just answered one of sciences most intriguing questions.

---

Credit: Earth.com author Connor Ertz

Why is species diversity greater in the tropics at the poles?

A team of researchers from around the world, led by...

Preparing food and cooking plants with heat or fire is an activity unique to humans. There is evidence that homo erectus began using fire over 400,000 years ago.

The invention of cooking has long been recognized as a critical step in human development. Ancient cooking would have initially involved the use of fires or pits and the invention of ceramic cooking vessels led to an expansion of food preparation techniques.

Cooking plants would have allowed the consumption of previously unpalatable or even toxic foodstuffs and would also have increased the availability of new energy sources.

Until now, evidence of cooking plants in early prehistoric cooking vessels has been lacking.

Researchers at the Organic Geochemistry Unit in the University of Bristol's School of Chemistry, working with colleagues at Sapienza, University of Rome and the Universities of Modena and Milan, studied unglazed pottery dating from more than 10,000 years ago, from two sites in the Libyan Sahara.

The researchers detected lipid residues of foodstuffs preserved within the fabric of unglazed cooking pots.

Significantly, over half of the vessels studied were found to have been used for processing plants based on the identification of diagnostic plant oil and wax compounds.

Detailed investigations of the molecular and stable isotope compositions showed a broad range of plants were processed, including grains, the leafy parts of terrestrial plants, and most unusually, aquatic plants.

The interpretations of the chemical signatures obtained from the pottery are supported by abundant plant remains preserved in remarkable condition due to the arid desert environment at the sites.

The plant chemical signatures from the pottery show that the processing of plants was practiced for over 4,000 years, indicating the importance of plants to the ancient people of the prehistoric Sahara.

Dr Julie Dunne, a post-doctoral research associate Bristol’s School of Chemistry and lead author of the paper, said: "Until now, the importance of plants in prehistoric diets has been under-recognized but this work clearly demonstrates the importance of plants as a reliable dietary resource.

"These findings also emphasize the sophistication of these early hunter-gatherers in their utilization of a broad range of plant types, and the ability to boil them for long periods of time in newly invented ceramic vessels would have significantly increased the range of plants prehistoric people could eat."

Co-author Professor Richard Evershed, also from Bristol's School of Chemistry, added: "The finding of extensive plant wax and oil residues in early prehistoric pottery provides us with an entirely different picture of the way early pottery was used in the Sahara compared to other regions in the ancient world.

"Our new evidence fits beautifully with the theories proposing very different patterns of plant and animal domestication in Africa and Europe/Eurasia."

The research was funded by the UK’s Natural Environment Research Council (NERC) and is published today in Nature Plants.

---

Credit: Earth.com Staff/<a href="http://www.bristol.ac.uk/">University of Bristol</a>

Humans started cooking plants for food over 10,000 years ago

Preparing food and cooking plants with heat or fire is...

As carbon dioxide increases in Earth’s atmosphere, more and more of the greenhouse gas is absorbed by the ocean, slowing rising surface temperatures. That’s great for us – but bad news for one tiny phytoplankton.

Emiliana huxleyi is a single-celled, photosynthetic plankton covered in small calcite disks called coccoliths. 

Photosynthetic phytoplankton lie on or near the surface of the ocean, and convert light into energy. Along with other types of plankton, they form a valuable food source for larger ocean creatures. 

For example, tiny phytoplankton like E. huxleyi are eaten by zooplankton, which become food for jellyfish, which are eaten by sea turtles, which become prey for sharks. Phytoplankton are at the center of nearly every marine food web.
<ol>
 	<li> huxleyi is facing a new threat from the ocean, though. Ocean acidification has made it a lot more difficult for the tiny phytoplankton to form its calcite disks, according to scientists from <a href="http://www.geomar.de/en/">GEOMAR Helmholtz Centre for Ocean Research Kiel</a>.</li>
</ol>
Calcium carbonate is the building block for E. huxleyi’s coccoliths. The added carbon dioxide in the ocean causes a series of chemical reactions that deplete calcium carbonate in the oceans. This affects E. huxleyi and other ocean creatures with shells.

The GEOMAR scientists conducted a series of lab experiments to see just how E. huxleyi is affected by ocean acidification. In laboratory conditions, the tiny phytoplankton’s growth and calcification rates of its coccolith were reduced. The short-lived organism was unable to fully adapt to more acidic waters even after 2,000 generations, the scientists said.

The lab tests didn’t tell them whether E. huxleyi would still be able to compete in its native waters in acidic conditions, though, so the scientists took to the seas.

There, the amount of energy the phytoplankton spent forming their calcite shells left them unable to form a bloom, the scientists said. They used the experimental KOSMOS (Kiel Off-Shore Mesocosms for Ocean Simulations) platform to study the phytoplankton populations off Norway’s west coast.

By analyzing the E. huxleyi populations in that region, they discovered it was in decline before the typical bloom period, instead of growing. When it came time to bloom, there weren’t enough of the phytoplankton to do so.

While E. huxleyi is just one of several types of phytoplankton, its struggles in more acidic waters could signal larger problems, the GEOMAR team said. 

When the little organisms die, their calcite shells help pull them down to the bottom of the ocean quickly, the researchers said. If their remains stay close to the surface, they decompose there, attracting bacteria and slowing the ocean’s ability to absorb more carbon dioxide from the atmosphere, they said.

E. huxleyi is also believed to release dimethylsulfide into the atmosphere, a cooling gas. Concentrations of the gas were high over the organism’s blooms, the scientists said, but very reduced in areas where blooms failed to form.

Ocean acidification causes huge problems for tiny phytoplankton

As carbon dioxide increases in Earth’s atmosphere, more and more...

For farmers, lost topsoil due to erosion can mean a dormant field and missing income for years.

Little is as important in agriculture as fertile topsoil. It nurtures crops, growing stronger, healthier plants that provide a better harvest. However, farming can lead to degradation of the topsoil. Irrigation often leads to erosion, the cause of most topsoil loss.

Agricultural scientists from the <a href="http://missouri.edu/">University of Missouri</a> think they’ve weeded out a solution for lost topsoil: switchgrass.

Switchgrass can help farmers keep a healthy layer of soil in their fields, according to the new study. The hardy plant can grow even in poor soil conditions such as degraded fields, it improves topsoil, and it can be harvested and sold as a biofuel, the researchers said.

They tested the plant on eroded fields in the Midwest, where topsoil usually sits over a layer of clay. As fields in Missouri, Oklahoma, Kansas, and other states, the topsoil thins, leaving the clay underneath. 

Clay is not a very permeable soil, making it hard for plant roots to receive the air and water they need. This creates a very poor growing medium for most crops – but the switchgrass does just fine, despite the lost topsoil.

"Switchgrass can be grown efficiently on eroded claypan soils; farmers who have lost their topsoil may want to consider growing this hardy plant,” said Dr. Stephan Anderson, one of the study’s authors. “Switchgrass can be harvested and sold as a biomass crop for ethanol production or as fuel for power plants.”

Anderson and Syaharudin Zaibon, the study’s lead author and a doctoral student at MU, studied farming plots with different amounts of topsoil, and even no topsoil over the clay. They grew corn, soybeans, and switchgrass on the plots.

After five years, they got their hands dirty and examined the plots to determine the effect of each crop on topsoil, and on permeability of the claypan underneath. 

The switchgrass made the claypan more able to accept the water necessary to grow healthy plants. It also improved the topsoil, the researchers said. 

The water permeability of clay soil where switchgrass was grown was 11 percent better than plots that grew corn or soybeans, according to the study. 

<a href="https://www.scientificamerican.com/article/only-60-years-of-farming-left-if-soil-degradation-continues/">Topsoil degradation</a> has become a major concern for scientists because as fields become more degraded, it is harder to grow edible crops. Some agricultural scientists have raised alarm that the current rate of topsoil loss could bring food shortages in the near future. 

While it may take years or even decades, switchgrass can speed the recovery of degraded fields so they can be used for farming again, while providing a sellable crop, the MU scientists said.

The study was published in <a href="https://dl.sciencesocieties.org/publications/sssaj">Soil Science Society of America Journal</a>.

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By <a href="mailto:oliviagharvey24@gmail.com">Olivia Harvey</a>, <a href="http://earth.com">Earth.com</a> Staff Writer

Switchgrass may help farmers recover lost topsoil

For farmers, lost topsoil due to erosion can mean a...

Your world: our favorite Instagram photos of green facades

Green facades have become an increasingly popular architectural feature in urban areas from both a design and environmental perspective. They offer a beautifully green and natural aesthetic, while also helping to keep cities cooler. Here are some of our favorite Instagram photos of green facades in cities all over the world.

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BNESb2SBqmZ/" target="_blank">Greentastic😍😍 #greenfacade #loveforgreen #greenarchitecture #fortkochin</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by Hadi (@hadi_haris) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-11-21T09:22:25+00:00">Nov 21, 2016 at 1:22am PST</time>

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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 54.0277777778% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BAFeGzuqohP/" target="_blank">Green Facade example .. #archdaily #greendesign #greenfacade #architecturelovers #architectureporn</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by Timber In Architecture (@timberdesign_arch) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-01-03T17:35:31+00:00">Jan 3, 2016 at 9:35am PST</time>

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 62.5% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/-KVy60h5nf/" target="_blank">Coming soon, Seattle. #1200Stewart #Seattle #greenfacade #buildingartistry</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by Westbank (@westbankcorp) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2015-11-16T21:56:19+00:00">Nov 16, 2015 at 1:56pm PST</time>

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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 62.540192926% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BJue34mjDDM/" target="_blank">Fantastic residential house in Tokyo/Japan, completely covered in a natural green facade. #inspiration #urban #nature ‬‬ #greenfacade #‎architecture ‬‬#‎becausethereisnoplanetB‬</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by ECOALF (@ecoalf) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-08-30T08:33:38+00:00">Aug 30, 2016 at 1:33am PDT</time>

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 50.0% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BJjNtbche4F/" target="_blank">@centralparksyd giving us the best reminder to remember to "look up" in the city today! #greenbuilding #greenfacade #livingwall #slowinthecity #slowsydney</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by Slow magazine (@slow_magazine) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-08-25T23:32:01+00:00">Aug 25, 2016 at 4:32pm PDT</time>

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 50.0% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BNzuojPjPT2/" target="_blank">#architecture #chile #santiago #arquitetura #archilovers #fachada #fachadas #facades #paredeverde #fachadaviva #greenfacade</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by AH! (@ah.arquitetura) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-12-09T19:33:08+00:00">Dec 9, 2016 at 11:33am PST</time>

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 50.0% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BM_EXX7hwAM/" target="_blank">#madrid #greenfacade #spain #españa#caixa_forum</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by KapilKaul (@kapil_kaul) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-11-19T08:43:16+00:00">Nov 19, 2016 at 12:43am PST</time>

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 50.0% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BMfVFHEhJpq/" target="_blank">Fachada verde del hotel Raphaël en la bella Roma. #roma #rome #italia #greenfacade #facades #colorsofthecity #cities #citiesoftheworld #green #nature #beauty #fachadas #fachadasverdes #magiaromana #europe #eurotrip2016 #eurotravel #tourism</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by Silvia Gamba S. (@silvigamba) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-11-07T00:53:38+00:00">Nov 6, 2016 at 4:53pm PST</time>

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 62.4866595518% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BMJmgxkgwhD/" target="_blank">Architecture inspiration ✅in the middle of Paris the flower building From Edouard François. To continue in vertical with the park nearby and Inspired by Parisian window planters he used this giant flower pots on the terrace 🙌🏻 #paris #greenparis #façade #architecture #houseoftheday #natural #architecturelovers #greenfacade #natural #model #park #city #traveler #inspiration #design</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by Fashion + Architecture (@mascarada.paris) on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-10-29T14:22:40+00:00">Oct 29, 2016 at 7:22am PDT</time>

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<blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 658px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-version="7">
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<div style="background: #F8F8F8; line-height: 0; margin-top: 40px; padding: 50.0% 0; text-align: center; width: 100%;"></div>
<a style="color: #000; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none; word-wrap: break-word;" href="https://www.instagram.com/p/BL3jEmXg3f0/" target="_blank">#hannover #altstadt #hannoveraltstadt #hannoverliebt #ballhof #hannovermitte #hannoverinnenstadt #altstadthannover #architecture #architektur #hanover #germany #archilovers #thisishannover #hannoverstagram #hannoverliebe #lowersaxony #laub #autmn #naturephotography #naturelover #red #leaves #facade #meinniedersachsen #fassade #fassadenbegrünung #facadegreening #greenfacade</a>
<p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;">A photo posted by @tonabnehmer on <time style="font-family: Arial,sans-serif; font-size: 14px; line-height: 17px;" datetime="2016-10-22T14:06:16+00:00">Oct 22, 2016 at 7:06am PDT</time>

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Your world: our favorite instagram photos of green facades

Your world: our favorite Instagram photos of green facades Green...

Meadow restoration in California. Could restoring some of the surviving meadows in the Sierra Nevada mountains help California bring its carbon emissions down to 1990 levels in the next three years?

The question spurred a team of researchers from the <a href="http://www.unr.edu/">University of Nevada, Reno</a> and citizen scientists with the <a href="http://earthwatch.org/expeditions">Earthwatch Institute</a> to hit the trails, armed with equipment to investigate.

Settlement in the mountains along the California and Nevada border since the mid-1800s has led to the destruction of many of the region’s meadows, said Dr. Ben Sullivan, a professor with the university’s Soil Science Laboratory – and released the carbon stored in the soil for long periods into the atmosphere. 

Water use also dried out the soil in former meadows, microbes move in, degrading the carbon and causing it to be released as gas, he explained. 

While trees and shrubs move into the former meadow space, they can’t take in nearly enough carbon to keep up, Sullivan added. A single acre of meadow can release more carbon through degradation than 11 acres of forest can absorb, he said.

The university decided to team up with Earthwatch Institute and its ranks of volunteer citizen scientists to study four meadows in the Truckee River watershed. Volunteers included 75 citizens from the local area, including a team of high school students from Reno and college students from UNR and the <a href="https://forestrycamp.berkeley.edu/">Berkeley Forestry Field Camp</a>.

The researchers and citizen scientists took samples from trees, shrubs, grasses, and soils. They also measured diameter and height of trees and shrubs and collected other data.

The volunteers’ help allowed the sampling to be done over the course of a few days instead of several weeks, and gave the students valuable experience in the field, Sullivan said. 

Sullivan and his team at the UNR Soil Science Lab will use the collected data to determine how much carbon is being stored in the four meadows, and create a model that can be used by the <a href="https://www.arb.ca.gov/">State of California Air Resources Board</a> to sell carbon credits in exchange for the meadows’ restoration. The board’s cap-and-trade program is one of a number of efforts to bring California’s carbon emissions down to 1990 levels by 2020.

Sullivan hopes to expand the research to more meadows in the Sierras. 

—

Organizations participating in the data collection expeditions included University of Nevada, Reno, the Earthwatch Institute, the <a href="http://berkeley.edu/">University of California, Berkeley</a>, the <a href="http://www.plumascorporation.org/">Plumas Corporation</a>, <a href="http://caltrout.org/">CalTrout</a>, and the <a href="https://www.truckeeriverwc.org/">Truckee River Watershed Council</a>.

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By <a href="mailto:oliviagharvey24@gmail.com">Olivia Harvey</a>, <a href="http://earth.com">Earth.com</a> Staff Writer

Scientists, citizens team up for Sierra Nevadas meadow restoration, California carbon credits

Meadow restoration in California. Could restoring some of the surviving...

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On the unforgiving landscape of North Greenland, temperatures drop and sunlight barely penetrates through the polar winter. It was here, however, that an international team of scientists found <a href="https://www.earth.com/news/predatory-worms-were-terror-beasts-half-a-billion-years-ago/#google_vignette" target="_blank" rel="noreferrer noopener">evidence of sea monsters</a> that would change our understanding of ocean life in the past.



This video captures the discovery of Timorebestia fossils that had been hidden for more than 500 million years in the Sirius Passet formation. The "terror beasts," as they are called, are a hidden chapter in the evolutionary history of <a href="https://www.earth.com" target="_blank" rel="noreferrer noopener">Earth</a>, showing that sophisticated predator-prey interactions occurred much earlier than previously envisioned.



Dr. Jakob Vinther and his research team at the <a href="https://www.bristol.ac.uk/" target="_blank" rel="noreferrer noopener">University of Bristol</a>, in collaboration with researchers at the <a href="https://eng.kopri.re.kr/" target="_blank" rel="noreferrer noopener">Korean Polar Research Institute</a>, braved extreme weather conditions at 82.5 north latitude to locate these giant creatures. Using sophisticated electron microprobe analysis, they revealed the detailed anatomy of the animals, including their muscle and nerve tissues.



The find upsets the traditional timeline of sea predators. Although we've long appreciated that Cambrian oceans were at one time ruled by <a href="https://www.youtube.com/watch?v=jWI3-UgA3_o&amp;list=PL1QLQMW9MWDwpkFOnvgAmu7wT6rZmYqdJ&amp;index=19" target="_blank" rel="noreferrer noopener">arthropods</a>, these discoveries indicate that relatives of arrow worms were first to dominate the seas. These worms were building sophisticated food webs several million years before other predator groups arose.



Each fossil is a story of ancient hunger, with fossil stomach contents revealing these meter-long beasts dined on heavily armored arthropods regularly, cementing their place as the ocean's first apex predators.



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Worms dominated seas before dinosaurs

https://www.youtube.com/watch?v=3Y4eLFNYrKE On the unforgiving landscape of North Greenland, temperatures drop...

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</div><figcaption class="wp-element-caption">New York is the site of the world's oldest forest.</figcaption></figure>



<h2 class="wp-block-heading" id="h-385-million-year-old-trees-discovered">385-million-year-old trees discovered</h2>



Scientists have uncovered something extraordinary just two hours north of New York City. The <a href="https://www.earth.com/news/worlds-oldest-forest-discovered-close-to-new-york-city/" target="_blank" rel="noreferrer noopener">world's oldest forest</a>, dating back 385 million years, offers a window into how Earth's first complex forests shaped our planet's atmosphere.



Located near <a href="https://townofcairo.com/" target="_blank" rel="noreferrer noopener">Cairo, New York</a>, in Greene County, these weren't merely primitive plants struggling to survive. These were sophisticated trees with root systems remarkably similar to modern forests. This ancient woodland predates dinosaurs by 140 million years.



<h2 class="wp-block-heading" id="h-the-cairo-forest-discovery">The Cairo forest discovery</h2>



385 million years ago, upstate New York was a tropical paradise near the equator. Thanks to continental drift, this ancient forest has traveled thousands of miles to its current location.



The fossil forest sits in an abandoned quarry, roughly half the size of a football field. This represents just a slice of what was likely a massive forest system stretching from New York into Pennsylvania.



Charles Ver Straeten, curator of sedimentary rocks at the <a href="https://www.nysm.nysed.gov/" target="_blank" rel="noreferrer noopener">New York State Museum</a>, made the discovery in 2009. While scouting the former highway department property, his trained eye spotted wandering patterns in the stone that looked like marine features.



<h2 class="wp-block-heading" id="h-revolutionary-age-and-preservation">Revolutionary age and preservation</h2>



The site contains 385-million-year-old rocks with fossilized woody roots forming horizontal patterns up to 18 feet (5.5 meters) wide. As Christopher Berry, a paleobotanist at Cardiff University, explains: "You are walking through the roots of ancient trees."



This discovery pushes back advanced tree evolution by millions of years. The research, published in <a href="https://www.cell.com/current-biology/home" target="_blank" rel="noreferrer noopener">Current Biology</a> in December 2019, fundamentally changes our understanding of when complex forests first emerged.



Researchers believe a massive flood buried the forest floor, creating perfect fossilization conditions. Over millions of years, sediment hardened into rock, preserving these root patterns like nature's time capsule.



<h2 class="wp-block-heading" id="h-meet-archaeopteris-the-first-modern-tree">Meet Archaeopteris: the first modern tree</h2>



The star of this ancient forest is Archaeopteris – not to be confused with the feathered dinosaur Archaeopteryx. This tree was far older and more revolutionary.



William Stein from <a href="https://www.binghamton.edu/" target="_blank" rel="noreferrer noopener">Binghamton University</a> describes the roots as "strikingly modern, essentially what you'd see outside in my yard right now." These weren't simple root systems you'd expect from ancient plants.



Some fossilized roots are six inches (15 centimeters) in diameter, forming 36-foot-wide (11-meter) patterns. These giants grew up to 65 feet (20 meters) tall with five-foot-diameter (1.5-meter) trunks.



<h2 class="wp-block-heading" id="h-climate-changing-impact">Climate-changing impact</h2>



These trees fundamentally changed Earth's environment. Kevin Boyce, a Stanford University geoscientist, explains how their deep roots triggered "weathering," chemical reactions that pulled carbon dioxide from the atmosphere.



This process dropped atmospheric CO2 levels from 10-15 times higher than today to roughly modern concentrations. These ancient trees helped create atmospheric conditions that made complex life possible.



<h2 class="wp-block-heading" id="h-ancient-forest-ecosystem">Ancient forest ecosystem</h2>



The forest was remarkably diverse. Scientists identified Eospermatopteris, palm tree-like plants with short roots that reached 30 feet (9 meters) tall but lacked woody structure. The forest also housed cladoxylopsids and a mysterious third species still being studied.



All reproduced through spores rather than seeds – millions of years before seeds evolved. This tropical environment had no grass, flowers, or flying insects, just towering trees creating Earth's first complex forest canopy.



<h2 class="wp-block-heading" id="h-scientific-significance">Scientific significance</h2>



Before this finding, the Gilboa forest, located 25 miles (40 kilometers) away, held the "oldest forest" title. Cairo's trees are 2-3 million years older, showing that complex forest ecosystems developed much faster than scientists believed possible.



Patricia Gensel, a <a href="https://www.unc.edu/" target="_blank" rel="noreferrer noopener">University of North Carolina</a> paleobotanist, notes: "The size of those root systems is really changing the picture. Even 20 years ago, researchers assumed trees with such complex root systems didn't evolve so early."



The Cairo site presents three unique root systems, suggesting Devonian period forests were diverse ecosystems with different trees occupying different environmental niches, much like today's forests.



<h2 class="wp-block-heading" id="h-modern-preservation-efforts">Modern preservation efforts</h2>



In 2022, New York State Senator Michelle Hinchey secured a $170,000 grant for the town of Cairo to construct specialized fencing around the fossil forest site. The town plans to conduct a feasibility study exploring the possibility of creating an educational center and working lab on-site.



Joe Hasenkopf, chair of the Cairo Planning Board, hopes to partner with educational institutions to create a research facility serving scientists, students, and the public.



<h2 class="wp-block-heading" id="h-lessons-for-today-s-climate">Lessons for today's climate</h2>



Why does a 385-million-year-old forest matter today? It shows how dramatically forests can change Earth's climate. These ancient woodlands created the atmospheric conditions supporting complex life.



Understanding how prehistoric forests transformed the planet helps us appreciate modern forests' critical role in addressing climate change. Forests remain Earth's most effective carbon capture systems.



These prehistoric trees changed Earth's atmosphere by pulling massive amounts of carbon dioxide from the air. As we face modern climate challenges, this ancient forest reminds us of trees' incredible power to transform our planet's environment.



The next time you walk through a forest, remember you're experiencing an ecosystem whose blueprint was established 385 million years ago in upstate New York. These ancient pioneers didn't just survive – they thrived and changed the world forever.



The full study was published in the journal Current Biology.



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Earth's oldest forest found in the United States

https://www.youtube.com/watch?v=Ow3JH03PqEQ New York is the site of the world's oldest...

<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://www.youtube.com/watch?v=prrq8Ql81zk
</div><figcaption class="wp-element-caption">Acid rain and a crisis solved.</figcaption></figure>



<h2 class="wp-block-heading" id="h-why-don-t-we-ever-hear-about-acid-rain-anymore-the-environmental-crisis-that-was-solved">Why don't we ever hear about "acid rain" anymore? The environmental crisis that was solved</h2>



Remember the 1980s when acid rain dominated headlines? Dire warnings about rain eating buildings, killing fish, and destroying forests filled every news cycle. Then, almost like magic, acid rain vanished from public discourse. What happened? Did we actually solve one of the late 20th century's most pressing environmental challenges?



The answer might surprise you. Unlike many environmental issues that drag on indefinitely, acid rain represents one of modern history's most successful ecological recovery stories. It's a tale of science, politics, and technology working together to tackle what seemed impossible.



<h2 class="wp-block-heading">What was acid rain?</h2>



Acid rain isn't regular rain having a bad day – it's precipitation that became significantly more acidic due to air pollution. When power plants, factories, and vehicles burn fossil fuels, they release sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere.



<h2 class="wp-block-heading">The science behind it</h2>



Think of acid rain as nature's chemistry experiment gone wrong. These compounds react with water, oxygen, and other chemicals to form sulfuric and nitric acids. When mixed with water vapor in clouds, they create precipitation with dangerously low pH levels.



While clean rain has a pH of about 5.6, acid rain could drop as low as 4.2 to 4.4 – roughly as acidic as tomato juice or coffee. According to US Geological Survey documentation, Scottish chemist Angus Smith first coined "acid rain" in 1872, but it didn't become a household phrase until the 1960s and 1970s when Swedish scientist Svante Odén documented its devastating effects on Scandinavian lakes and European forests.



<h2 class="wp-block-heading">The crisis at its peak</h2>



During the height of public concern, environmental damage was both widespread and visible. This wasn't some abstract future threat – people could see destruction happening in real-time.



<h2 class="wp-block-heading">Environmental devastation</h2>



The most dramatic impacts were impossible to ignore. Research documented by the Adirondack Lakes Survey Corporation and the New York State Department of Environmental Conservation shows that in the Adirondack Mountains, more than 200 lakes became so acidic they couldn't support fish life. The Adirondack Council reports that 409 lakes once supported brook trout, but many lost their fish populations due to acid rain.



By 1976, when scientists cataloged all acidified lakes in the Adirondack Park, researchers found that half of the lakes over 2,000 feet above sea level had no fish, according to studies published in environmental journals. The acidification process worked like a slow-motion disaster. As acid rain fell into watersheds, it gradually lowered pH levels. Fish couldn't survive in acidic water, and their food sources died off too.



Trees at high elevations showed stress directly linked to acid rain. It weakened them by leaching nutrients and making them susceptible to disease. Historical records show Germany's Black Forest saw nearly half its trees damaged by the mid-1980s.



<h2 class="wp-block-heading">Economic impact</h2>



Acid rain wasn't just environmental – it was expensive. Acidic precipitation corroded infrastructure, buildings, and monuments. Historic stone structures deteriorated at accelerated rates. Tourism suffered as lakes became fishless and forests declined. EPA economic analyses from the period documented repair costs mounting into billions annually.



<h2 class="wp-block-heading">The solution: government action and technology</h2>



Transformation from crisis to success required unprecedented cooperation between governments, industries, and environmental groups.



<h2 class="wp-block-heading">The Clean Air Act of 1990</h2>



The turning point came with the Clean Air Act Amendments of 1990, signed by President George H.W. Bush. This represented a fundamentally new approach to environmental regulation, as documented in EPA historical records.



<h2 class="wp-block-heading">Cap-and-trade success</h2>



Instead of mandating specific technologies, the 1990 amendments introduced something revolutionary: a cap-and-trade system for sulfur dioxide emissions. EPA program documentation shows this market-based approach set overall limits but allowed companies to trade emission allowances.



The genius was harnessing market forces to find cost-effective pollution reduction. Companies reducing emissions cheaply could sell excess allowances to those facing higher costs. Research published in environmental economics journals and EPA progress reports shows this resulted in dramatic SO2 reduction at a fraction of projected costs.



<h2 class="wp-block-heading">Technology advances</h2>



Policy provided the framework, but technology made reductions possible. Studies in atmospheric science journals document the widespread adoption of flue gas desulfurization systems ("scrubbers") that removed sulfur dioxide before it reached the atmosphere. By the 2000s, new installations could remove over 95% of SO2 emissions, according to EPA technical reports.



The push coincided with cleaner energy development. Natural gas produces fewer sulfur compounds than coal. Wind and solar, emerging in the 1990s, captured growing market share, reducing reliance on high-sulfur coal.



<h2 class="wp-block-heading" id="h-why-we-don-t-hear-about-it-today">Why we don't hear about it today</h2>



Why did acid rain disappear from headlines? Simple: the problem was largely solved.



<h2 class="wp-block-heading">Success doesn't make news</h2>



There's an old journalism saying: "If it bleeds, it leads." Environmental success stories don't generate urgency like crisis reporting. Media attention shifted to other challenges: climate change, plastic pollution, and biodiversity loss. There's only so much environmental anxiety the public can absorb, and newer concerns replaced acid rain.



<h2 class="wp-block-heading">Mission accomplished</h2>



The primary reason is beautifully simple: interventions worked. EPA monitoring data shows sulfur dioxide emissions dropped over 90% since 1990. Academic research published in environmental science journals confirms pH levels in formerly affected areas returned closer to normal. This represents one of history's most dramatic environmental recoveries. Studies by the Adirondack Lakes Survey Corporation show fishless lakes now support healthy populations. Forests recovered, and building damage slowed dramatically.



<h2 class="wp-block-heading" id="h-is-it-really-gone">Is it really gone?</h2>



The crisis is largely resolved, but monitoring data shows the problem isn't completely eliminated – it's managed to acceptable levels. Some areas still experience occasional events during high pollution periods. International environmental research indicates that rapidly industrializing Asian countries face similar problems to what we experienced decades ago, though they're implementing successful strategies.



EPA research shows nitrogen oxide emissions proved more challenging than sulfur dioxide, coming from vehicles and mobile sources. Climate science studies suggest changing weather patterns add complexity to how acid rain forms and falls.



<h2 class="wp-block-heading">What this teaches us</h2>



The acid rain experience proves that seemingly intractable environmental problems can be solved with scientific understanding, political will, and technological innovation. Environmental monitoring data shows recovery speed was remarkable – within a decade, measurable improvements appeared in air quality and ecosystem health.



Success came from bipartisan support across party lines. Policy analysis studies show the market-based approach appealed to those preferring economic incentives while achieving environmental goals. This support created lasting policy surviving political changes.



<h2 class="wp-block-heading">Conclusion</h2>



Acid rain's disappearance from public consciousness represents environmental science's greatest success stories. Through effective regulation, technological innovation, and international cooperation, we transformed an overwhelming crisis into a manageable challenge.



Today's silence isn't because we forgot – it's because we solved it. The 1990 Clean Air Act, combined with technology and energy market changes, reduced acid rain emissions over 90%, according to comprehensive EPA data analysis.



This success offers hope for current challenges. It proves complex problems can be solved when science, policy, and technology work together. As we face climate change and plastic pollution, acid rain reminds us that dramatic positive change is possible.



Next time someone asks whether environmental regulations work, remember acid rain. It's proof that sometimes, we get it right.



<hr class="wp-block-separator has-alpha-channel-opacity"/>



Sources: This article draws from EPA official documentation and progress reports, peer-reviewed research published in environmental and atmospheric science journals, historical data from the Adirondack Lakes Survey Corporation, New York State Department of Environmental Conservation records, US Geological Survey publications, policy analysis studies, and environmental monitoring data collected over three decades.



<h2 class="wp-block-heading">Frequently Asked Questions</h2>



1. Is acid rain completely gone? No, but EPA monitoring shows it's reduced to manageable levels. US sulfur dioxide emissions dropped over 90% since 1990, making acid rain much less severe than the 1980s crisis.



2. How long did solving take? Environmental monitoring data shows significant improvements began within 5-10 years of 1990s emission controls. Full ecosystem recovery took longer – some areas need 20-30 years for complete recovery.



3. What made the solution successful? Clear scientific understanding, visible damage motivating action, bipartisan support, available technology, and innovative market-based policies like cap-and-trade.



4. Do other countries have acid rain problems? Yes, particularly rapidly industrializing Asian countries. However, international environmental research shows many implement similar successful control strategies.



5. Could acid rain return? Potentially, if regulations weaken or we return to high-sulfur coal without controls, though effects would take years to become severe according to environmental projections.



6. Can you recommend any teaching tools on the subject of "acid rain"? The United States Environmental Protection Agency produced a wonderful teacher's guide for ages 14 and under that you can find on the EPA website here: <a href="https://www.epa.gov/sites/default/files/2017-03/documents/teachersguide.pdf" target="_blank" rel="noreferrer noopener">https://www.epa.gov/sites/default/files/2017-03/documents/teachersguide.pdf</a>



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The environmental problem we actually solved

https://www.youtube.com/watch?v=prrq8Ql81zk Acid rain and a crisis solved. Why don't we...

Fresh,Radish,Harvest,On,Soil,In,Garden.

<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/Fi2OeEwuzRM?si=vTyd2m9FMmtyWkex
</div></figure>







Mid-July is an opportune time to kick-start a thriving fall garden, and this guide lays out the best vegetables and herbs to plant now for a fruitful autumn harvest. 



Fast-growing leafy greens such as spinach, lettuce, kale, and arugula perform especially well in the waning summer heat, with harvests beginning as soon as 30 days. 



These cool-season crops relish the transition into fall, offering repeated yields with cut-and-come-again methods.



Root vegetables like radishes, carrots, and beets also excel during this period. Radishes deliver satisfaction in under a month, while carrots and beets mature in about two months. Employing succession planting ensures a continuous stream of produce deep into the cooler months. 



For a boost of fresh flavor, herbs like cilantro, basil, dill, and chervil are excellent picks. These heat-loving varieties flourish in July’s warmth and are harvest-ready in about 30 days, especially when sown continuously.



Gardeners in zones 6 through 9 can benefit from planting bush beans and snap peas, which don’t require trellising and are ideal for compact plots. 



Maturing in 50–60 days, they’re a smart choice for quick, protein-rich harvests. For those in hotter regions, heat-tolerant crops such as okra and southern peas provide reliable yields and thrive in scorching conditions.



This guide emphasizes more than crop selection—it highlights the importance of timing, soil preparation, and ongoing sowing techniques. 



With thoughtful planning and attention to regional climate needs, even late-summer gardeners can enjoy fresh salads, hearty stews, and the satisfaction of a robust, homegrown harvest well into fall.



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What to plant in your garden in mid-July

https://youtu.be/Fi2OeEwuzRM?si=vTyd2m9FMmtyWkex Mid-July is an opportune time to kick-start a thriving...

Green,Ecoduct,Over,An,Empty,Highway,During,Sunset.

<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/XYgiPzmNBTU?si=eFYY7gPHU1JznLvU
</div></figure>



A new long-term study in Monkton, Vermont, reveals that wildlife tunnels significantly reduce amphibian road mortality during seasonal migrations. 



Frogs and salamanders often cross roads to reach breeding ponds each spring, but many are killed by vehicles. 



Researchers from the <a href="https://www.uvm.edu/" target="_blank" rel="noreferrer noopener">University of Vermont</a>, in collaboration with local citizens and the Vermont Agency of Natural Resources, installed two underpass tunnels in 2015. 



Over a 12-year monitoring period, they observed an 80.2% reduction in amphibian deaths, and up to 94% for non-climbing species like salamanders. 



The study used a before-after-control-impact design and documented more than 5,200 amphibians, highlighting the tunnels’ effectiveness even in nearby buffer zones.



Funded at $342,397 - far cheaper than wildlife crossings for large mammals - the project showcased the power of community-led conservation.



Local groups initiated the effort after observing mass amphibian deaths. Wildlife cameras later captured over 2,200 amphibians using a tunnel in just one spring, along with other species like raccoons and bobcats, indicating wider ecosystem benefits.



This marks the first peer-reviewed, long-term data set in the northeastern U.S. confirming amphibian-specific underpasses work. 



The study urges transportation departments to incorporate these designs into road planning and highlights how community action, thoughtful infrastructure, and persistence can make a real difference for biodiversity.



The full study was published in the <a href="https://linkinghub.elsevier.com/retrieve/pii/S1617138125000780" target="_blank" rel="noreferrer noopener">Journal for Nature Conservation</a>.



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-----

Wildlife tunnels save millions of amphibians

https://youtu.be/XYgiPzmNBTU?si=eFYY7gPHU1JznLvU A new long-term study in Monkton, Vermont, reveals that...

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



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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

[sendtonews key="0ynNMYkMKa-2340414-12187" 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.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...

<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;



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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

[sendtonews key="3upvlAaHgO-2256633-12187" 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.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...

<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



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



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

How does salt makes things taste better?

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

<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;



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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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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&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> Staff Writer 



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.

Lesotho: Africa's "Kingdom in the Sky"

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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

[sendtonews key="qjvhBOBnY8-2426650-12187" 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 the province of Zaragoza in northeast Spain. The image was captured by the Copernicus Sentinel-2 mission.



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



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



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



Video/ Image Credit: ESA



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



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

The province of Zaragoza in northeast Spain

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

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

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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.nasa.gov/goddard">NASA Goddard</a> describes two exoplanets that are orbiting a star 218 light-years away. A team of researchers led by the University of Montreal has found evidence that these planets are "water worlds."



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



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



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



Video Credit: NASA Goddard



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



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



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

Two distant planets may be "water worlds"

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

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

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