High in Alaska’s Brooks Range, streams that once ran so clear you could drink from them are now the color of rusty tea. The water looks hazy, smells metallic, and can stain rocks orange for miles.&nbsp;



Fish are struggling, insect life is smothered, and the change has arrived with startling speed. Scientists say the culprit isn’t industry. It’s <a href="https://www.earth.com/news/thawing-permafrost-could-tip-earths-climate-balance/">thawing permafrost</a>.



<h2 class="wp-block-heading" id="h-when-frozen-ground-wakes-up">When frozen ground wakes up</h2>



For millennia, Arctic permafrost - permanently frozen soil - locked minerals in place. As the region warms, that icy seal is failing. Water and oxygen seep into freshly thawed ground and set off a chain reaction in sulfide-rich rocks (pyrite is a prime example).&nbsp;



The chemistry is textbook: sulfides oxidize, sulfuric acid forms, and the acid leaches metals like <a href="https://www.earth.com/news/iron-was-lifes-first-essential-metal-and-shaped-early-evolution/">iron</a>, aluminum, and cadmium from surrounding rock. Those metals then flush into rivers and streams.



“This is what acid mine drainage looks like,” said Tim Lyons, a biogeochemist at the University of California, Riverside. “But here, there’s no mine. The permafrost is thawing and changing the chemistry of the landscape.”



<h2 class="wp-block-heading" id="h-astounding-changes-in-water-chemistry">Astounding changes in water chemistry</h2>



A new study zeroes in on the Salmon River, a key waterway in the Brooks Range, documenting just how far the contamination has progressed.&nbsp;



But the authors stress the pattern isn’t isolated. Similar transformations are underway across dozens of Arctic watersheds that share the same mix of geology and thaw.



“I have worked and traveled in the Brooks Range since 1976, and the recent changes in landforms and water chemistry are truly astounding,” said David Cooper, a <a href="https://www.colostate.edu/" target="_blank" rel="noreferrer noopener">Colorado State University</a> research scientist and co-author of the study.



The alarm first sounded in 2019. Ecologist Paddy Sullivan of the <a href="https://www.alaska.edu/alaska/" target="_blank" rel="noreferrer noopener">University of Alaska</a> was flying into the backcountry to study northward-shifting forests when his bush pilot mentioned the Salmon hadn’t cleared after snowmelt - it looked, he said, “like sewage.”&nbsp;



Sullivan’s field observations led to a collaboration with Lyons, <a href="https://www.alaskapacific.edu/" target="_blank" rel="noreferrer noopener">Alaska Pacific University</a>’s Roman Dial, and others to trace the cause and measure the ecological fallout.



<h2 class="wp-block-heading" id="h-toxic-metals-in-alaska-s-rivers">Toxic metals in Alaska's rivers</h2>



The team’s analysis confirmed a geochemical cascade. Permafrost thaw exposes sulfide-bearing rocks, oxidation generates acidity, and the resulting acid mobilizes a suite of metals.&nbsp;



In small doses many metals are harmless or even essential. But at higher concentrations they become toxic to aquatic life - and the Salmon River’s waters now exceed the <a href="https://www.epa.gov/" target="_blank" rel="noreferrer noopener">U.S. Environmental Protection Agency</a> thresholds for several metals detrimental to fish and invertebrates.



Iron is the most visible signal. As iron oxidizes, it forms fine, orange precipitates that cloud the water and coat the streambed. That haze blocks sunlight that <a href="https://www.earth.com/news/antarctic-algae-that-once-cooled-earth-are-now-disappearing/">algae</a> and aquatic plants need, and the sludge blankets the gravel and cobbles where insect larvae live and fish spawn. 



Cadmium is more insidious: it can accumulate in fish organs, potentially affecting predators from Dolly Varden <a href="https://www.earth.com/news/trout-living-in-polluted-rivers-evolved-to-tolerate-high-metal-levels-in-the-waters/">trout</a> and grayling to birds and bears.



<h2 class="wp-block-heading" id="h-ripple-effects-in-the-food-chain">Ripple effects in the food chain</h2>



For now, the researchers say metal levels in edible fish tissue are not considered hazardous to humans. But indirect risks loom large.&nbsp;



Chum salmon - central to the diets and culture of many Indigenous communities - lay their eggs in clean, oxygenated gravel. When those spaces fill with fine sediment and metal precipitates, the oxygen drops and eggs can suffocate. 



Changes in insect communities ripple up the <a href="https://www.earth.com/news/oceans-twilight-zone-stabilizes-the-marine-food-chain/">food chain</a>, weakening the foundation that supports juvenile fish and the species that eat them.



<h2 class="wp-block-heading" id="h-irreversible-shift-in-alaska-s-rivers">Irreversible shift in Alaska's rivers</h2>



Unlike mine sites - where engineers can install liners, drains, or neutralizing systems - these rivers wind through remote, roadless country, and the sources of contamination are everywhere thaw has reached the right rock. There is no single pipe to plug, no settling pond to build.



“Wherever you have the right kind of rock and thawing permafrost, this process can start,” Lyons said. And once it does, it tends to keep going. The only true “off switch” would be for the permafrost to refreeze - an unlikely prospect in a warming climate.



“There’s no fixing this once it starts,” Lyons said. “It’s another irreversible shift driven by a warming planet.”



<h2 class="wp-block-heading" id="h-fingerprints-of-global-warming">Fingerprints of global warming</h2>



The experts hope their findings will help communities, land managers, and fisheries prepare - by expanding water quality monitoring, identifying vulnerable spawning grounds, planning alternative harvests if runs falter, and adapting management practices as conditions change.



The broader message is sobering. The Brooks Range is about as far from cities and smokestacks as you can get. Yet its rivers are wearing the unmistakable fingerprints of global warming.



“There are few places left on Earth as untouched as these <a href="https://www.earth.com/news/alaskas-rivers-are-rusting-and-the-changes-are-visible-from-space/">rivers</a>,” Lyons said. “But even here, far from cities and highways, the fingerprint of global warming is unmistakable. No place is spared.”



Rivers once known for their wild clarity are telling a new story - one where ancient ice, long trusted to keep the land’s chemistry in check, is finally letting go.



The study is published in the journal <a href="https://www.pnas.org/doi/10.1073/pnas.2425644122" target="_blank" rel="noreferrer noopener">Proceedings of the National Academy of Sciences</a>.



Image Credit: Taylor Rhoades



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Alaska's rivers are turning orange, and the changes are irreversible

High in Alaska’s Brooks Range, streams that once ran so clear you could drink from them are now the color of rusty tea. The water looks hazy, smells metallic, and can stain rocks orange for miles.&nbsp; Fish are struggling, insect life is smothered, and the change has arrived with startling speed. Scientists say the culprit isn’t industry. It’s thawing permafrost. When frozen ground wakes up For millennia, Arctic permafrost - permanently frozen soil - locked minerals in place. As the region warms, that icy seal is failing....

Sustainable, a documentary film by Matt Wechsler and Annie Speicher, lays out the case for organic farming through the eyes of farmers practicing sustainable operations and their nutritionally committed food operations customers.

The star of the film is central Illinois farmers Marty and Kris Travis and their grown son, Will. The family couldn’t be more passionate about the way they work Spence Farm, the small plot of land they repurchased in 1999 after a prior generation had to sell it the decade before. The Travises only started turning a profit after attending a meeting of Chicago restaurant chefs looking for a locally grown organic produce supply chain. The chefs would place an order for whatever underserved produce they needed the next season and the Travises would figure out how to organically grow it. 

When Will points out how his neighbors, traditional farmers farming a thousand acres or more, are making $400 an acre while Spence Farm is pulling in $2,200 on each of their 160 acres, the film certainly makes the case for the economics of 

farming without the high chemical input costs and other bad practices that have become the unwritten rules of agribusiness.

The Travises eventually recruit other small, struggling farmers, some of whom give on-screen credit to the family for saving their own operations.

We learn that most of the farming land in Iowa is devoted to corn and oats, and that the commodity nature of those crops means that the farmers are entirely at the mercy of markets. Their crop prices have nothing to do with the quality of their output in a given year. The sustainable farmers in the film, on the other hand, have more control over what they choose to grow and charge for their yield.

As in many similar stories, big agribusiness is the enemy. One University of Missouri agriculture professor even admits to having trusted the corporate farms to more efficiently feed more people on less acreage. Sure, it would push family farmers out of the business, but that would, in turn, enable those former people of the land to find more profitable careers elsewhere. What he didn’t count on, he says, was the spike of farmer suicides in the 1980s when they couldn’t keep their multi-generation family farms. That’s the point at which he sees that farming isn’t just a business – it’s a culture.

There are a lot of farming cultural heroes in this film, including an Amish agricultural consultant from Middlefield, Ohio whose face is never shown on-camera because of the prohibitions of his religion, but whose knowledge of the old ways are entirely new again.  The sustainability farming experts preach that a diseased plant is one whose health has been permitted to decline and that nutrition programs for the crops can save the fields without <a href="https://www.earth.com/news/new-study-shows-direct-impact-of-pesticides-on-bee-colonies/">pesticides</a>. 

Interestingly, cattle ranching is put in a favorable light, as long as the meat producers act in environmentally sensitive and non-cruel ways. Vegetarian, animal welfare activist and environmental lawyer Nicolette Hahn meets, falls in love with and marries Bill Niman, a cattle rancher – much to her own surprise. The family’s farm raises grass-fed, grazing beef cattle. The former lawyer states the many ways their herd contribute to responsible land management.

“When you have good grazing, it stimulates vegetation growth and keeps soil moister,” she says. “Hooves tramp organic matter back into the soil.”

The film does an admirable job of extolling the benefits of organic farming over the current agribusiness model. But by presenting mostly small-scale farmers whose main customers are big-city fine dining restaurant chefs, the filmmakers and passionate food activists inadvertently highlight their argument’s weaknesses. These are mostly boutique farmers selling to boutique markets. One might conclude that the higher prices of organic produce is the “real” price of food, and that the corporate mass producers have found ways to cheat costs down that are detrimental to the land and to the health of the American customer.

But until organic farming finds its way into Walmart and Kroger as prime suppliers – not just a small dedicated sub-section of the produce aisle – they aren’t making the mass-market sell they need to be taken seriously by mass markets. Instead, they’re serving only a more elitist audience of fine diners at trendy metropolitan restaurants, and for upscale outdoor market aficionados and those willing to pay extra for their nutritional savvy at Whole Foods and Trader Joe’s. 

At one point the filmmakers point out that 20 percent of American children are food-insecure. But are the parents of those kids going to solve the challenge by taking the family to a four-star Chicago eatery or by rolling a grocery cart through the organic aisle at a trendy big-city supermarket? 

One foodie and customer of Spence Farm is a baker for Publican Artisan Bread in Chicago who boasts that, while supermarket loaves takes four hours to make, theirs take 60 hours. One can guess that a 60-hour bread costs much more than a mass-produced loaf baked in a fraction of the time – and that it’s well worth it in terms of both flavor and nutritional value. The average family might buy an artisan loaf to thank Aunt Martha for watering the houseplants while they’re on vacation, but will they put it in the kids’ school lunch boxes five days a week?

Until organic farming can be done on a much larger scale at prices that don’t induce sticker shock, sustainable farming might continue to serve a small, but dedicated upscale and urban market. 

Sustainable is currently playing on <a href="https://www.netflix.com/">Netflix</a>. 

--

By David Searls, <a href="http://earth.com">Earth.com</a> Staff Writer

Source: <a href="http://sustainablefoodfilm.com/">Sustainable Official Site</a>

Earth.com Film Review: Sustainable

Sustainable, a documentary film by Matt Wechsler and Annie Speicher,...

Imagine 30 million gallons of raw sewage dumped into the nation’s second-largest estuary, just off the shores of a major U.S. city and its largest park. That’s the situation in <a href="https://www.earth.com/news/kayakers-prepare-to-meet-shell-oil-rig-in-seattle/">Seattle</a> since an electrical failure resulted in the catastrophic spill of human waste into Puget Sound that occurred February 9-16, according to the <a href="https://www.ap.org/en-us/">Associated Press</a>.

Local authorities say that the accident damaging the underground network of pumps, motors, electric panels and other system components has been fixed and that no raw sewage has escaped since mid-February. They also say that they’ve been working 24 hours a day to effect repairs and clean up the damage.

However, the facility is currently only partially treating waste at this point before dumping it into the Sound.

“It has been a disaster, and we're not out of it yet,” said Jeanne Kohl-Welles, a King County councilwoman, in an <a href="https://www.ap.org/en-us/">Associated Press</a> interview. “We still don't know really what went wrong. We've got to get a handle on it. I'm very concerned about the environment, the effects on marine life in the sound, (and) public health.”

Kohl-Welles’s district includes the hobbled West Point Treatment Plant, which is located next to the city’s largest public park.

So far, damage and cleanup costs have exceeded $25 million and the treatment plant expects to not be finished until the end of April.

As for the long-term damage, untreated waste can adversely affect the health of humans and marine life through the release of chemicals and germs. It could also make the region’s popular shellfish risky to eat.

“Anytime pollution goes into the sound, it's a concern," Sheida Sahandy, who directs the Puget Sound Partnership, told the <a href="https://www.ap.org/en-us/">Associated Press</a>. PSS is the state agency responsible for cleaning up the sound.

The spill also gives a bloody nose to the reputation of the region for its clean waterways and environmental concerns.

--

Written by David Searls, Earth.com Staff Writer

Source:<a href="https://www.ap.org/en-us/"> Associated Press</a>

Millions of gallons of raw human waste spill into Puget Sound

Imagine 30 million gallons of raw sewage dumped into the...

Could man-made climate change be affecting the planetary airstreams that trigger extreme weather? An international team of climate scientists think so. 

The scientists – from the <a href="https://www.pik-potsdam.de/pik-frontpage">Potsdam Institute for Climate Impact Research</a> (PIK), <a href="http://www.psu.edu/">Pennsylvania State University</a>, and <a href="https://www.vu.nl/en/">Vrije Universiteit Amsterdam</a> – have linked “stalling” giant airstreams to human activity.

“The unprecedented 2016 California drought, the 2011 U.S. heatwave and 2010 Pakistan flood as well as the 2003 European hot spell all belong to a most worrying series of extremes,” said Dr. Michael Mann of Penn State, the study’s lead author, in a press release. “The increased incidence of these events exceeds what we would expect from the direct effects of global warming alone, so there must be an additional climate change effect. In data from computer simulations as well as observations, we identify changes that favor unusually persistent, extreme meanders of the jet stream that support such extreme weather events.”

The data point to human activity as a culprit in the unusual airstream activity, Mann said.

Extreme weather, from drought to flooding to heatwaves, occurs when the climate in an area gets “stuck” on otherwise normal weather, co-author Dr. Stefan Rahmstorf of PIK said. Dry, hot days or rain without a break can cause problems, he said.

“This occurs under specific conditions that favor what we call a quasi-resonant amplification that makes the north-south undulations of the jet stream grow very large,” Rahmstorf said. “It also makes theses waves grind to a halt rather than moving from west to east.”

The airstreams are powered by the gap in temperature between the polar regions and the Equator, he explained. The poles – especially the Arctic – are warming more quickly than equatorial regions, and that affects the movement of the airstreams, Rahmstorf said.

Another factor is that the average surface temperature over land masses is rising faster than over oceans. This also affects the airstreams, Rahmstorf said.

The team of scientists used temperature data recorded since 1870 to reach their conclusions. They found that a particular combination of temperature factors cause the planetary airstreams to “stall.” They also found that this concurrence of conditions had increased by 70 percent since the Industrial Revolution began. 

The pace has picked up even more in the past four decades, the team found.

“The more frequent persistent and meandering jetstream states seems to be a relatively recent phenomenon, which makes it even more relevant,” said Dr. Dim Coumou of VU Amsterdam. 

The researchers acknowledged that the study is only beginning to tackle how climate change and human activity may influence the planetary airstreams to cause extreme weather events.

“We certainly need to further investigate this – there is some good evidence, but also many open questions,” Coumou said. “In any case, such non-linear responses of the Earth system to human-made warming should be avoided.”

The study will be published in the journal <a href="http://www.nature.com/articles/srep45242">Scientific Reports</a>.

—

By <a href="mailto:kcathey@earth.com">Kyla Cathey</a>, <a href="http://earth.com/staff">Earth.com</a> Staff Writer

Scientists: human activity may affect planetary airstreams

Could man-made climate change be affecting the planetary airstreams that...

The world changed dramatically beginning some 35 million years ago in what is now Australia. For starters, the entire island nation broke off from <a href="https://www.earth.com/news/antarctica-sets-record-high/">Antarctica</a>, and at about the same time, temperatures dropped globally. The freeze resulted in a mass extinction event that drew the interest of modern-day scientists from <a href="http://www.anu.edu.au/">Australian National University</a>.

The ANU researchers used molecular evolutionary studies and fossil records to study a species of pygopodoid geckos that became extinct due to the abrupt climate change.

“The dramatic shift to colder and drier climates likely resulted in rapidly changing Australian habitats, which hugely impacted the animals that inhabited them,” said Ian Brennan, the lead researcher of the study and a PhD student at the ANU Research School of Biology. “Our research provides evidence that rapid shifts in climate may have profound and long-lasting effects on global biodiversity.”

Species of pygopodoid geckos died off in a mass extinction event caused by the freezing temperatures. But over time new species of the hardy reptile adapted to the changing climate in a number of ways once the effects of the big chill wore off and the landscape turned to heated deserts some ten million years ago.

For instance, the reptiles dodged the radiant heat by becoming nocturnal and they developed rugged skin and scales to defend against water loss.

The study proved that climate change affects biodiversity in long-term and dramatic ways. So how will Earth and its inhabitants change to meet the conditions to come under this next cycle of global environmental change?

The ANU study was published earlier this month in the journal Evolution.

-- 

Written by David Searls, Earth.com Staff Writer

Source:<a href="http://onlinelibrary.wiley.com/doi/10.1111/evo.13207/abstract"> Evolution</a>

Image Credit: Stuart Hay, ANU

Mass extinction event occurred in Australia 35 million years ago

The world changed dramatically beginning some 35 million years ago...

Carbon dioxide is a greenhouse gas. It traps heat in the atmosphere, thus making it the main culprit for climate change. But what if science could find a way to convert CO2 to methanol?

On the face of it, that doesn’t look like much of a trade off. Methanol is a chemical that can cause blindness, coma and even death to humans. But when handled carefully, it’s a valuable substance in the production of paint, <a href="https://www.earth.com/news/first-evidence-that-deep-sea-animals-are-ingesting-plastics/">plastics</a> and even explosives.

And now researchers at the <a href="https://energy.gov/">U.S. Department of Energy's</a> Brookhaven National Laboratory, have taken the first steps toward that conversion by identifying in the lab the metal that can serve as the most efficient catalyst. Metal catalysts interact with metals to speed up chemical reactions that lead to conversions, and the researchers had to test many such metals.

“We found that copper zinc oxide should give the best results, and that copper zinc is not even stable under reaction conditions,” said Dr. Ping Liu, a chemist and the study’s lead author. “In fact, it reacts with oxygen and transforms to copper zinc oxide.”

The next step is to increase efficiencies in the operation.

“We want to improve it, and get it to operate at lower temperatures and lower pressures, which would save energy,” said Liu.

These findings, which were published in Science, could one day lead to technologies for turning a compound that’s slowly poisoning the earth into a useful substance.

--

Written by David Searls, Earth.com Staff Writer

Source:<a href="http://science.sciencemag.org/"> Science</a>

First steps taken to turn climate-changing CO2 into methanol

Carbon dioxide is a greenhouse gas. It traps heat in...

Our planet contains countless breathtaking and unforgettable places to explore. This is not among them. Yes, it’s true. You can book a trip to Chernobyl. No, not to the actual reactor. That would be crazy. But you can explore just about everything short of the Chernobyl Sarcophagus, which is about as ominous as it sounds. That’s the massive steel and concrete structure that “temporarily” encases the damaged reactor while a more permanent confinement shelter is in the works.

As for Pripyat and the rest of what’s called the Chernobyl Exclusion Zone or the Zone of Alienation, well, it’s not so alienating anymore. The website for <a href="https://www.chernobyl-tour.com/english/">Chernobyl Tour</a> sums it up best, though in a bit of an understatement: “Radiation makes the zone particularly interesting.”

Not that you and the family have a thing to worry about, Chernobyl Tour assures. Stay for a day or two and…no problem. The tour group promise couldn’t be more reassuring: “Of course, the Zone in its central part still has places with elevated radiation, and we definitely would NOT recommend you staying at them for a long time. However, if you follow the suggested route and the guides' directions, your visit to the Chernobyl zone will be absolutely radiation-safe.”

This, of course, is despite the website’s stated theme for the tour: “Eye-opening experience of post-Apocalyptic world.” 

Indeed. 

But let’s step back for a moment for a brief history lesson.

Meltdown

On the evening of April 26, 1986, Chernobyl, a Soviet-style nuclear power plant, experienced the world’s first Level 7 meltdown of a nuclear reactor. The second such nuclear catastrophe occurred to the <a href="https://www.earth.com/news/scientists-fukushima-radiation-no-threat/">Fukushima</a> Daiichi plant in Japan in 2011, as the result of a devastating earthquake and tsunami.

The Chernobyl plant was – and is – located less than two miles from Pripyat, which was, at the time a thriving city of nearly 50,000 people. Two workers were killed immediately and nearly 30 other firefighters and workers lost their lives to radiation exposure in the days and months that followed. Not that the world learned of this cataclysmic event as it happened. Ukraine was part of the Soviet Union at the time, and authorities tried to keep it quiet. They sealed the damaged reactor in its sarcophagus and evacuated the surrounding cities and villages. 

Ghost town tours

Ukrainian authorities insist that, after 30 years of evacuation, the radiation levels are low enough that tourists can explore the two towns, settlements and villages that comprise the Zone of Alienation. You can see tens of thousands of abandoned homes and other structures, and more than 10,000 tourists a year take up the offer. The once bustling Pripyat is the largest of the ghost towns, and a popular destination for apocalyptical-minded sightseers – especially the abandoned amusement park with its landmark Ferris wheel. 

The Chernobyl Tour is a property of Ukraine’s Ministry of Economic Development and Trade, so it’s fully endorsed by the nation. There are significant explanations of health issues on the website, and an insistence that the stay of even a day or two is safe. In fact, some 200 people, including children, live in the Zone illegally. <a href="https://www.vice.com/en_us/article/hanging-out-with-the-only-residents-of-chernobyls-exclusion-zone">This 2012 Vice article</a> explains that many of those children are seriously ill. 

The photographers and extreme-sport version of tourists who visit can tell their friends they survived Chernobyl. What remains to be seen is whether they can still make that claim in 20 or 30 years.

--

Original Feature Written by David Searls, <a href="http://earth.com">Earth.com</a> Staff Writer

Vacations to Hell: Chernobyl

Our planet contains countless breathtaking and unforgettable places to explore....

The after-effects of an earthquake observed through seismic readings are not necessarily the same as when observed by orbiting satellites. That’s one conclusion that can be drawn from the study of the 7.8 magnitude quake that shook up <a href="https://www.earth.com/image/the-south-island-new-zealand/">South Island</a> in New Zealand last November. The event, known as the Kaikoura Earthquake – for the town near the epicenter – is now one of the most-studied quakes in history.

The researchers found that before-and-after photos of the area shot from the satellites Copernicus Sentinel-1 and the Japanese-owned ALOS-2 revealed rupture details previously unknown. The team of scientists from New Zealand, the United States and the United Kingdom started to study the satellite images soon after the quake struck and their findings have been written up in the latest issue of <a href="http://science.sciencemag.org/">Science</a>.

Kaikoura was a major quake, resulting in landslides and a tsunami.

Satellite views showed ruptures and land displacements as much as 30 feet high, and the locations of multiple fault lines. The scientists said that the rupture pattern also gave clues to the formation of nearby mountain ranges.

“An earthquake commonly ruptures across a single fault line or faults that are closely grouped, but Kaikoura ruptured at least 12 major crustal faults across two distinct active fault domains,” said Professor Tim Wright, study co-author and director of the Centre for the Observation and Modelling of Earthquakes, Volcanoes and Tectonics at the <a href="https://www.leeds.ac.uk/">University of Leeds</a> in the UK. “This challenges many assumptions about how individual faults control earthquake ruptures.”

The scientists said that their study of the Kaikoura quake could help seismologists reevaluate seismic hazard models.

“The message from Kaikoura is that earthquake science should be more open to a wider range of possibilities when rupture models are being developed,” said Dr. Ian Hamling, a natural hazards geodesist from GNS Science and the lead author of the just-released study. “It underlines the importance of re-evaluating how rupture scenarios are defined for seismic hazard models.”

--

Written by David Searls, Earth.com staff writer

Source:<a href="http://science.sciencemag.org/"> Science</a>

Earthquake satellite imagery reveals more than seismic readings

The after-effects of an earthquake observed through seismic readings are...

Coral <a href="https://www.earth.com/image/grand-turk-island-coral-reefs/">reefs</a> are among the most delicate and unique ecosystems on our planet, containing a wide variety of marine life that rely on the reefs for food and protection. However, these days our reefs are under more destructive threats than ever before.

A new study has found that some coral reefs could be experiencing even more damage from invading bacteria and fungi, which may migrate from land-based sources. Outfall from sewage treatment plants and coastal inlets could be the culprit in many cases.

The research, published in <a href="http://aem.asm.org/">Applied and Environmental Microbiology</a>, points specifically at the reefs off the southeastern coast of Florida. Researchers Chan Lan Chun and Michael Sadowsky – both of the <a href="http://www.d.umn.edu/">University of Minnesota, Duluth</a> – took water samples from coastal inlets and oceanic outfall effluent that came from water treatment plants along Florida’s southeastern coast. They also retrieved water samples and samples of coral tissues in the reefs.

They found a crossover between specific bacterial species as well as fungal families in both land-based sources and in the water and tissues of the reefs. Along the coastline the scientists studied, the distance from sewage outfall pipes to the reefs ranged from 5.5 to 25 miles.

Sadowsky explained their hypothesis, saying “The [data] we have now strongly suggests that anthropogenic input sources are becoming established on reefs.” Anthropogenic means originating from human activity, so the researchers clearly believe these invasive microbes are a direct result of the nearby sewage runoff. However, more experiments would need to be done to support this hypothesis.

In the meantime, the researchers are worried these microbes will be damaging to nutrient cycling and coral health within the reef. Invaders such as these could easily disrupt the balance of the flora and fauna in this delicate ecosystem. 

It remains to be seen if invading microbes will be yet another source of destruction to take down coral reefs. With climate change and coral bleaching already destroying reefs around the world, these ocean ecosystems need our help now more than ever.

--

By Connor Ertz, Earth.com Staff Writer

Source: <a href="https://www.asm.org/">American Society for Microbiology</a>

Invading land-based microbes could be hurting our coral reefs

Coral reefs are among the most delicate and unique ecosystems...

The <a href="https://www.earth.com/news/idea-tackle-arctic-ice-melt/">Arctic</a> just set another new record – and it’s not one that pleases climatologists. For the third straight year, the polar region saw a reduction in the amount of sea ice at the end of winter, according to satellite data released by the <a href="https://nsidc.org/">National Snow and Ice Data Center</a>.

It was the lowest amount of sea ice ever found in nearly 40 years of measurements by satellite. And much of the ice that did survive the winter appeared to be thinner than usual, due to dramatically high temperatures recorded at the North Pole.

“This is just another exclamation point on the overall loss of Arctic sea ice coverage that we’ve been seeing,” Mark Serreze, the data center’s director, told the <a href="http://www.nytimes.com/">New York Times</a>.

What this is leading to is a polar region that will see no ice coverage at all during the region’s summer months, an annual occurrence that could happen as early as the next couple decades.

While the sea ice loss doesn’t trigger rising seas, it does unbalance the region’s food chain by, for instance, delaying the bloom of phytoplankton at the bottom of the chain. Less sea ice also means there’s more open ocean to absorb the sun’s energy, which leads to additional warming globally.

To understand the scale of the seasonal ice loss, consider that the iced-in sea area recorded this winter in the Arctic is some 470,000 square miles less that the average annual figure from the years 1981 to 2010.

It’s no wonder. Recorded temperatures late last fall were, in some parts of the Arctic, as much as 35 degrees Fahrenheit higher than the usual recorded temperatures for that time of the year. Even right at the North Pole, mean temperatures late last year were 23 degrees warmer than normal.

--

Written by David Searls, Earth.com Staff Writer

Source:<a href="https://nsidc.org/"> National Snow and Ice Data Center</a>,<a href="https://www.nytimes.com/"> New York Times</a>

Arctic sea ice set unwanted record last winter

The Arctic just set another new record – and it’s...

Can <a href="https://www.earth.com/news/south-georgias-past-ice-cap/">climate change</a> be a beautiful thing? At least it can sometimes seem that way. When observed at a very micro level, some of the damage created by our irresponsible environmental stewardship can look misleadingly attractive. 

Monet’s waterlilies 

The French impressionist Claude Monet wrote, “I am only good at two things: gardening and painting.” He combined his two talents by spending the last 30 years of his life mainly painting the waterlilies in his beloved garden – a portfolio of some 250 of his most classic works. 

Monet’s waterlilies would be in colorful abundance if he were alive today. That, unfortunately, is at least in part because the greenhouse effect, brought on by the release of carbon dioxide into the atmosphere. The effect warms the planet – and waterlilies love the warmth. They also thrive in shallow water, and that’s an environmental fact in many regions of the world.  

As UN-Water, the United Nations agency on water issues, wrote, “Higher temperatures and changes in extreme weather conditions are projected to affect availability and distribution of rainfall, snowmelt, river flows and groundwater, and further deteriorate water quality.”

Not that all waterlilies are thriving these days. Tropical lilies In the Na Kha river basin in Thailand are threatened with extinction due to the damage done by water pollution.

The emerald green sea

The description of a vast emerald green body of water sounds inviting. Except that this particular photo op portends a winter dead zone in the Arabian Sea about the size of Texas – and still growing. The water’s soothing coloration is due to the winter and summer bloom of Noctiluca scintillans, more commonly known as sea sparkle. These microscopic bioluminescent plankton glow because of the chlorophyll in them. And their widespread presence here is because they – and they alone – thrive in the dying waters. 

The Arabian Sea has this ever-growing patch of oxygen-depleted water because of the overpowering amount of raw sewage and fertilizer that finds its way into the sea. Man’s devastation throws off the whole food chain, resulting in the loss of the fishing that sustains life in the region – and a beautiful, serene sea of emerald green. 

A haunting blue luminescence 

Noctiluca scintillans strikes again. Only this time the plankton’s base is at Preservation Bay, along the southern coast of Australia. CBS News described the sea sparkle bloom, just a few days ago, as “an ethereal blue light riding the waves along a beach in Tasmania.”

As poetic as it sounds – and the sight is attracting tourists and photographers – this plankton outburst once again signifies troubled waters. Different outbreaks of the sea sparkle have bloomed in green, such as in the Arabian Sea, or in red, as occurred at Bondi Beach in Sydney, Australia in 2012.

Regardless of the attractive coloration of the plankton, and of the gracious waterlilies, this activity taps into the damage human beings are causing our environment in a variety of ways. It’s a potentially deadly beauty, and one that only a photographer or landscape artist could truly appreciate.

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Original Feature by David Searls, <a href="http://earth.com">Earth.com</a> Staff Writer

Earth.com Feature: When environmental damage creates beauty

Can climate change be a beautiful thing? At least it...

Upon reacting to the release of the annual report of the World Meteorological Organization, Dr. Phil Williamson, associate fellow at the <a href="https://www.uea.ac.uk/">University of East Anglia</a> in England had some harsh words for climate change doubters in an interview with the <a href="http://www.dailymail.co.uk/ushome/index.html">Daily Mail</a>. He was addressing the release of the annual report from the <a href="https://www.wmo.int/">World Meteorological Organization</a>, a specialized agency of the <a href="http://www.un.org/en/">United Nations</a>.

“Human-driven climate change is now an empirically-verifiable fact,” he said. “Those who dispute that link are not sceptics, but anti-science deniers.”

The <a href="https://www.wmo.int/">WMO</a> report released earlier this week stated that, once again, last year was the warmest since measurements had been made in 1880.

 Other “lowlights” of the report were that <a href="https://www.earth.com/news/rising-sea-louisiana-coast/">sea levels</a> continued to rise due to melting polar ice and Arctic and Antarctic ice levels were far below average.

“With levels of carbon dioxide in the atmosphere consistently breaking new records, the influence of human activities on the climate system has become more and more evident,” WMO chief Petteri Taalas wrote.

The report shows that the effect of greenhouse gases can be felt in a number of ways. For instance, warming in the Arctic and melting sea ice were leading to a shift in wider oceanic and atmospheric circulation patterns. That, in turn, created confusing weather conditions all over the globe, and including unexpected highs in the U.S. and Canada last year and chilly temperatures in the Arabian peninsula and North Africa.

Worst of all, the WMO report indicated that we’re making few gains in defense of the planet.

“Provisional data also indicates that there has been no easing in the rate of increase in atmospheric carbon dioxide concentrations,” it stated.

--

By <a href="http://earth.com">Earth.com</a> Staff Writer David Searls

Source:  <a href="http://www.dailymail.co.uk/ushome/index.html">Daily Mail</a>,<a href="https://public.wmo.int/en/about-us/who-we-are"> World Meteorological Organization</a>

Climate change evidence grows with UN report

Upon reacting to the release of the annual report of...

There are some 7,000 landmines in Russia, just waiting to go off. Actually, the underground explosions already underway in the Russian Arctic are the result of the thawing <a href="https://www.earth.com/image/permafrost-melting-altering-coastlines/">permafrost</a>. The phenomenon is suspected to be brought about by some of the hottest summers on record, due to climate change. As the soil warms, it thaws pockets of methane gas that had been frozen beneath the surface for thousands of years.

Satellite imagery has revealed the craters and funnels caused by numerous of these explosions, and scientists describe walking on ground that feels spongy with gas built-up.

Alexey Titovsky, director of one of the affected region’s department for science and innovation, said that the methane gas bubbles are contained in what are known locally as pingos, the dome-shaped mounds of soil encasing large segments of ice.

“At first such a bump is a bubble,' he said. “With time the bubble explodes, releasing gas. This is how gigantic funnels form.”

The craters and funnel-shaped gouges in the earth can be seen by satellite. Fortunately, the region is not well populated, so there’s little risk to humans. In fact, one of the Arctic peninsulas is known by the natives as “the end of the world.” However, the explosions could affect energy production facilities in the area – and they serve as yet one more alarming evidence of climate change.  

-- 

By <a href="http://earth.com">Earth.com</a> Staff Writer David Searls

Source:  <a href="http://siberiantimes.com/home/">Siberian Times</a>

Methane in thawing permafrost is exploding in the Russian Arctic

There are some 7,000 landmines in Russia, just waiting to...

<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=WXXGGiynIjs
</div><figcaption class="wp-element-caption">Greenland is not sinking. In fact, it is the opposite.</figcaption></figure>



<h2 class="wp-block-heading" id="h-a-contrasting-climate-response">A contrasting climate response</h2>



Most coastal towns are <a href="https://www.earth.com/news/sinking-land-will-intensify-the-effects-of-rising-sea-levels/" target="_blank" rel="noreferrer noopener">preparing for higher sea levels</a>, but <a href="https://www.earth.com/news/greenland-no-longer-has-to-worry-about-rising-sea-levels/" target="_blank" rel="noreferrer noopener">Greenland presents</a> a different scenario during climate change. The ground there is rising at a remarkable rate. Over the past decade, some areas have lifted about 20 centimeters, which translates to roughly 2 meters per century. This rate significantly exceeds current projections for sea level rise.



<h2 class="wp-block-heading" id="h-geological-rebound-process-through-climate-change">Geological rebound process through climate change</h2>



The mechanism behind this phenomenon is straightforward. As the ice sheet melts, the immense weight is removed from the bedrock, causing the land to rebound upward. This process resembles the way compressed material springs back when pressure is released.



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



Researchers at the <a href="https://www.dtu.dk/english/" target="_blank" rel="noreferrer noopener">Technical University of Denmark</a> are documenting this uplift using the GNET network, consisting of 61 GPS stations positioned around Greenland's coast. These sensors can detect movement with millimeter precision, providing detailed measurements of the ongoing changes.



The data reveal that current uplift rates exceed the gradual rebound occurring since the last ice age ended approximately 12,000 years ago. This acceleration corresponds directly with increased ice sheet melting rates.



<h2 class="wp-block-heading" id="h-coastal-transformation">Coastal Transformation</h2>



This uplift is actively reshaping Greenland's coastline. New islands and rocky formations, called "skerries," are emerging as previously submerged land surfaces rise above the water level. This represents a notable contrast to global concerns about rising seas.



The study, published in Geophysical Research Letters, demonstrates the varied regional impacts of climate change. While many locations face rising water levels, Greenland's bedrock is literally rising above the surrounding seas.



The full study was recently published in <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2023GL104851" target="_blank" rel="noreferrer noopener">Geophysical Research Letters</a>.



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Greenland's ground rises while coasts worldwide face higher seas

https://www.youtube.com/watch?v=WXXGGiynIjs Greenland is not sinking. In fact, it is the...

<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=DSM3EVeGHJU
</div><figcaption class="wp-element-caption">Companies like MindStudio help companies train their employees to implement the latest AI Agent building platform.</figcaption></figure>



<h2 class="wp-block-heading" id="h-ai-agent-training-transforms-the-workplace-fear-factor-into-a-competitive-advantage">AI agent training transforms the workplace 'fear factor' into a competitive advantage</h2>



Organizations that offer comprehensive artificial intelligence training to their workers find remarkable value that extends well beyond basic <a href="https://www.earth.com/news/mind-wandering-might-be-more-productive-than-you-think/" target="_blank" rel="noreferrer noopener">productivity improvements</a>. Emerging research demonstrates that carefully crafted AI training programs <a href="https://www.earth.com/news/ai-does-not-replace-human-creativity-but-enhances-it/" target="_blank" rel="noreferrer noopener">enhance</a> corporate performance, lower operational costs, and dramatically improve employee psychological well-being by turning workplace uncertainty into professional empowerment.



<h2 class="wp-block-heading" id="h-addressing-the-widespread-ai-anxiety-crisis-among-us">Addressing the widespread 'AI anxiety' crisis among us</h2>



A staggering 53% of employees expressed concern that the use of AI tools to automate work tasks could make them appear disposable to their employers, according to <a href="https://www.microsoft.com/" target="_blank" rel="noreferrer noopener">Microsoft</a>'s 2024 workplace survey. Such pervasive worry about being substituted by machines has caused what researchers have termed "AI technostress" – a psychological state that can result in occupational burnout and poorer mental well-being.



Data published in <a href="https://www.nature.com/palcomms/" target="_blank" rel="noreferrer noopener">Humanities and Social Sciences Communications</a> showed that belief in AI learning ability was a moderator in the link between technology adoption and work pressure, and higher confidence significantly lowered negative psychological responses. Workers provided ample training to become competent with AI software have significantly lower stress.



Companies like <a href="https://www.mindstudio.ai/" target="_blank" rel="noreferrer noopener">MindStudio</a> have platforms for building what are known as "AI Agents". In essence, AI Agents are simply tools that employees can build for themselves or their teams quickly and inexpensively. MindStudio will even train entire companies, from the CEO on down, at no cost. By letting MindStudio empower employees, companies avoid hiring more IT staff, buying more software, and implementing solutions to problems that do not exist.



MindStudio even has partners locally for companies, like <a href="http://www.dominnus.com" target="_blank" rel="noreferrer noopener">Dominnus</a> with offices in the Carolinas, California, and Denver, to help build AI Agents and support employees as they become resident AI experts for their organization. The training provided by MindStudio is applicable across other AI Agent building platforms as well.



<h2 class="wp-block-heading" id="h-revolutionary-productivity-through-focused-learning">Revolutionary productivity through focused learning</h2>



Organizations that implement large-scale AI training programs achieve dramatic outcomes. Employees performed tasks significantly better when they utilized AI support compared to when they didn't, according to <a href="https://www.nngroup.com/" target="_blank" rel="noreferrer noopener">Nielsen Norman Group</a> research findings. Their study documented productivity increases of 66% for a variety of professional tasks.



Federal Reserve Bank of St. Louis research finds workers record 33% higher productivity in time working with generative AI tools. The benefit is equivalent to 5.4% of work time savings for AI users – around 2.2 hours per week for full-time workers.



<h2 class="wp-block-heading" id="h-psychological-well-being-benefits-through-ai-competence">Psychological well-being benefits through AI competence</h2>



The emotional transformation when employees are provided with proper technology training is a fundamental transformation from fear to professional confidence. A survey of 600 employees across industries, carried out by ScienceDirect, proved that AI capabilities strengthen work environment commitment and improve job satisfaction.



A <a href="https://www.lut.fi/en" target="_blank" rel="noreferrer noopener">LUT University</a> study discovered that AI adoption has no direct effect on workers' well-being but does so indirectly through working conditions like task optimization and safety protocols. Strategically deployed AI that involves correct training can actually increase workplace mental well-being.



<h2 class="wp-block-heading" id="h-from-replacement-anxiety-to-partnership-confidence">From 'replacement anxiety' to 'partnership confidence'</h2>



Although 35% of those interviewed in recent McKinsey studies were concerned about workforce displacement, firms with large-scale training initiatives witness such fears dissipate quickly. The World Economic Forum found that two out of three respondents believe AI competencies will enhance their career prospects and job marketability.



This shift from fear to trust has measurable implications for job satisfaction. Applied Sciences research indicates AI can create tailored wellness programs based on individual employee requirements.



<h2 class="wp-block-heading" id="h-financial-benefits-of-increased-retention">Financial benefits of increased retention</h2>



The mental health advantages of AI learning have a direct impact on organizational bottom lines in the form of a positive feedback cycle with high retention of employees. Recent ROI research validates that artificial intelligence learning has a beneficial impact on employee turnover and satisfaction levels.



PriceWaterhouseCoopers' research documents 20% to 30% improvements in productivity, market speed, and revenue in organizations that attempt systematic AI adoption through comprehensive training.



<h2 class="wp-block-heading" id="h-environmental-advantages-of-ai-enabled-teams">Environmental advantages of AI-enabled teams</h2>



AI training has unforeseen environmental benefits as it makes the work environment more efficient. According to a study in Scientific Reports, the carbon footprint in writing and illustrating work is significantly lower when AI performs it compared to humans. AI software produces 130 to 1,500 times less CO2 equivalent per page of text created than human authors.



In addition, AI-driven remote work functionality significantly reduces environmental impact. Research by Cornell University and Microsoft indicates that remote workers reduce greenhouse gas emissions by up to 54% by not commuting daily to offices. Hybrid workers working remotely two to four days a week can reduce their carbon footprint by 11% to 29%.



<h2 class="wp-block-heading" id="h-cumulative-organizational-advantages">Cumulative organizational advantages</h2>



The compounding gains of better mental well-being, reduced turnover, increased productivity, and environmental benefits flow to enterprises from the pairing. McKinsey analysis estimates the long-term AI potential at $4.4 trillion in incremental productivity growth opportunity from business use cases.



As of now, 75% of knowledge workers globally utilize generative AI, mirroring widespread adoption patterns. Organizations that provide organized training and assistance see the most favorable results in productivity, worker satisfaction, and ecological sustainability.



The research overwhelmingly indicates that companies that invest in proper AI education, like that offered through <a href="https://www.mindstudio.ai" target="_blank" rel="noreferrer noopener">MindStudio</a>, establish win-win scenarios where employees are both more empowered and less stressed, and companies enjoy the gains of increased productivity, reduced turnover, and improved mental health outcomes throughout their workforce.



For more on MindStudio's free AI training for companies, visit the website's of MindStudio and Dominnus from the links below.



The research was published across a variety of peer-reviewed journals, including <a href="https://www.nature.com/palcomms/" target="_blank" rel="noreferrer noopener">Humanities and Social Sciences Communications</a>, <a href="https://www.frontiersin.org/journals/artificial-intelligence" target="_blank" rel="noreferrer noopener">Frontiers in Artificial Intelligence</a>, and <a href="https://www.mdpi.com/journal/applsci">Applied Sciences</a>.



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MindStudio.AI: <a href="https://www.mindstudio.ai" target="_blank" rel="noreferrer noopener">https://www.mindstudio.ai</a>



Dominnus: <a href="https://www.dominnus.com" target="_blank" rel="noreferrer noopener">https://www.dominnus.com</a>

AI agent training boosts mental health and profits

https://www.youtube.com/watch?v=DSM3EVeGHJU Companies like MindStudio help companies train their employees to...

<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=0HDXqTGEmi4
</div><figcaption class="wp-element-caption">Scientists give plants superpowers against bacterial disease</figcaption></figure>



<h2 class="wp-block-heading" id="h-a-natural-solution-to-disease-through-crop-modification">A natural solution to disease through crop modification.</h2>



The agricultural industry stands at a crossroads between productivity and environmental responsibility, and crop modification often carries a negative connotation. While chemical pesticides have long been the go-to solution for crop protection, their harmful effects on ecosystems and human health have prompted scientists to seek alternatives. The recent breakthrough by <a href="https://www.southampton.ac.uk/" target="_blank" rel="noreferrer noopener">University of Southampton</a> researchers offers a promising path forward through the precise manipulation of plant-associated microbial communities.



<h2 class="wp-block-heading" id="h-the-science-behind-microbial-partnerships">The science behind microbial partnerships</h2>



Plants naturally harbor diverse ecosystems of bacteria, fungi, and other microorganisms that function as biological allies. These microscopic partners contribute to disease resistance, nutrient absorption, and stress tolerance. However, until now, scientists lacked the tools to deliberately reshape these communities to enhance crop protection.



The Southampton team's approach centered on <a href="https://www.earth.com/news/engineered-plant-microbiomes-the-future-of-crop-protection/" target="_blank" rel="noreferrer noopener">modifying lignin biosynthesis genes in rice plants</a>. This strategic intervention altered the plant's metabolic output, creating conditions that favored beneficial bacterial populations while suppressing harmful ones. The result was a living defense system embedded within the plant itself.



<h2 class="wp-block-heading" id="h-implications-for-global-food-security">Implications for global food security</h2>



The successful demonstration against Xanthomonas oryzae, the pathogen responsible for bacterial blight in rice, represents more than a laboratory achievement. Rice feeds nearly half the world's population, and bacterial blight causes devastating crop losses annually. Traditional control methods rely heavily on pesticides that contaminate soil and water systems.



<h2 class="wp-block-heading" id="h-looking-beyond-disease-resistance">Looking Beyond Disease Resistance</h2>



While disease protection represents the immediate application, the research framework opens doors to broader agricultural improvements. Future developments could engineer microbiomes to enhance nutrient uptake, reducing dependence on synthetic fertilizers. This dual benefit addresses both crop productivity and environmental sustainability.



<h2 class="wp-block-heading" id="h-the-path-forward">The path forward</h2>



As this technology advances from laboratory to field applications, it promises to reshape sustainable agriculture. The ability to program plants with their own biological defense systems could herald a new era where crops protect themselves naturally, reducing chemical inputs while maintaining yields necessary for global food security.



The study is published in the journal&nbsp;<a href="http://dx.doi.org/10.1038/s41467-023-44335-3" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



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Revolutionizing agriculture through microbiome engineering

https://www.youtube.com/watch?v=0HDXqTGEmi4 Scientists give plants superpowers against bacterial disease A natural...

<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.



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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...

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

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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.



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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...

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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



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



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Designing crops that can beat the heat

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

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



Video Credit: NASA Goddard&nbsp;



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Remote sensing will revolutionize the way we monitor trees

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

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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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Lesotho: Africa's "Kingdom in the Sky"

[sendtonews key="uV9Lh2fQbV-1760058-12187" type="single"] Lesotho: Africa's "Kingdom in the Sky" Today’s...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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Wetlands are a major source of methane emissions

[sendtonews key="f8fukm28Vz-2491833-12187" type="single"] Today's Video of the Day from NASA...

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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The rapid retreat of the Columbia Glacier

[sendtonews key="0879czfG3k-1785905-12187" type="single"] Today’s Video of the Day from NASA...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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2022 illustrated the consequences of a warming climate

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

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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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Satellites reveal how Earth's systems are interconnected

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

Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



Video Credit: ESA&nbsp;



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Melt ponds on the Greenland Ice Sheet

[sendtonews key="qARzJPSabQ-2270617-12187" 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> describes how Earth is unique in our solar system for its ability to sustain liquid water on its surface. But now, the water cycle is shifting as the climate warms, and scientists must find ways to predict how these changes will affect water availability.



Overall, 96 percent of Earth's water is saltwater, and nearly all of freshwater is found in ice and groundwater. These sources of water are linked as it passes through solid, liquid and gas phases.



In a warmer climate, the water cycle will be transformed. It will be easier for water to evaporate and form clouds, and storms will become more frequent and intense. Some regions will get too much water, while others will be left without enough water. In addition, soil moisture will be lost - which threatens food security.



Scientists are using satellite data from over the last 40 years to track changes that are happening in the water cycle. This will ultimately help us prepare for extreme events and better manage our water resources, according to ESA.



Video Credit: ESA



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Tracking changes in Earth's water cycle

[sendtonews key="fxH3eJHEkQ-2010196-12187" type="single"] Today’s Video of the Day from the...

Saturn,-,High,Resolution,3d,Images,Presents,Planets,Of,The

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard Space Flight Center</a> features images of Saturn from NASA’s Hubble Space Telescope. The photographs capture the start of the mysterious "spoke season" on Saturn - when unexplained features appear on its rings. 



According to NASA, both the cause of the spokes and their seasonal variability have yet to be fully explained by planetary scientists.



"Like Earth, Saturn is tilted on its axis and therefore has four seasons, though because of Saturn's much larger orbit, each season lasts approximately seven Earth years. Equinox occurs when the rings are tilted edge-on to the Sun," explains NASA.



"The spokes disappear when it is near summer or winter solstice on Saturn. (When the Sun appears to reach either its highest or lowest latitude in the northern or southern hemisphere of a planet.) As the autumnal equinox of Saturn's northern hemisphere on May 6, 2025, draws near, the spokes are expected to become increasingly prominent and observable."



Experts believe that the spokes may be a product of the planet's variable magnetic field. When magnetic fields interact with solar wind, an electrically charged environment is created. This phenomenon is visible on Earth as the northern lights.&nbsp;



"Scientists think that the smallest, dust-sized icy ring particles can become charged as well, which temporarily levitates those particles above the rest of the larger icy particles and boulders in the rings," says NASA.



The spokes were first observed in the early 1980s by NASA's Voyager mission. Depending on the angle of the rings, the spokes can appear dark or light.



"Thanks to Hubble's OPAL program, which is building an archive of data on the outer solar system planets, we will have longer dedicated time to study Saturn’s spokes this season than ever before," said NASA senior planetary scientist Amy Simon, head of the Hubble Outer Planet Atmospheres Legacy (OPAL) program.



"Despite years of excellent observations by the Cassini mission, the precise beginning and duration of the spoke season is still unpredictable, rather like predicting the first storm during hurricane season."



Video Credit: NASA Goddard&nbsp;



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



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Mysterious "spoke season" captured on Saturn

[sendtonews key="Ccjk8KEMzv-2550719-12187" type="single"] Today's Video of the Day from NASA...

Closeup,Of,Fresh,Green,The,Napier,Bush,Grass,As,Animal

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Today’s Video of the Day from <a href="http://www.ntu.edu.sg/">NTU Singapore</a> reveals that some plants can remove toxic heavy metals from soil.&nbsp;



The researchers analyzed samples of various tropical plant species to test for levels of heavy metals and metalloids. The study showed that there are existing plants with high levels of these contaminants, which means that these species are great candidates for drawing pollutants out of the soil.&nbsp;



Among the plants examined in the study, 12 species had accumulated several types of heavy metals and metalloids. These plants are widely available, including species that are native to Singapore.



“In a small nation like Singapore, land may be repurposed to support new development plans, so it is important that we have a green and sustainable way to remediate land that is contaminated," said Professor Lam Yeng Ming.



"We set out to uncover how to better make use of tropical plants to do phytoremediation and through advanced characterization techniques, we showed how some of these tropical plant species can be an environmentally friendly and literally a 'green' way to remove contaminants in soil."&nbsp;



"Phytoremediation also has benefits of cost effectiveness, simplicity of management, aesthetic advantages, and long-term applicability and sustainability. The strategy prevents erosion and metal leaching by stabilizing or accumulating heavy metals, so that helps reduce the risk of contaminant spread.”



Video Credit: NTU Singapore



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



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Plants help remove heavy metals from contaminated soil

[sendtonews key="6SdlLLbt0t-1988946-12187" type="single"] Today’s Video of the Day from NTU...

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes why herbicides are not as effective in killing weeds anymore. In the 20th century, chemical companies developed thousands of herbicides. The most commonly used herbicide was glyphosate, which was introduced in 1974.



Over the past few decades, dozens of species of weeds have evolved resistance to glyphosate. Depending on the site of action, the part of the plant that an herbicide interacts with, weeds may even be resistant to herbicides that have not been developed yet.&nbsp;



With increasing resistance to glyphosate and other herbicides, weeds are - once again - becoming a major concern for farmers.&nbsp;



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.

Weeds are becoming increasingly resistant to herbicides

[sendtonews key="gRpsplpwpe-2251464-12187" 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.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> (JPL) describes a dust storm on Mars that was nearly twice the size of the United States. As the storm covered the southern hemisphere of the planet, some of NASA’s explorers had to delay their normal activities.



NASA’s Insight lander put itself in a "safe mode" for 11 days to conserve battery power because solar power was disrupted by the dust. The Ingenuity Mars Helicopter postponed flights until conditions improved.



"A fleet of NASA orbiters monitor Martian dust storms like this one and serve as lifelines to Earth by relaying data from the rovers and lander on the ground back to the team. This includes the Mars Reconnaissance Orbiter, MAVEN, and Odyssey," reports JPL.



"Dust storms like this recent one start close to the ground and are spread by wind as they rise – warming the cold Martian atmosphere."



The images in the video were captured by NASA’s Curiosity as the dust rolled in. A fleet of orbiters monitored the dust storm from above, relaying data from Mars’ explorers back to scientists on Earth.



Video &amp; Image Credit: NASA/JPL-Caltech/ASU/MSSS



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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.

NASA monitors giant dust storms on Mars

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