A new study of frontline employees in Arizona reveals that firefighters carry the greatest load of per- and polyfluoroalkyl substances (PFAS) in their blood, while health care personnel also show moderate but notable elevations. The findings point to unseen hazards in everyday work gear and environments.



The investigation, led by scientists at the <a href="https://healthsciences.arizona.edu/" target="_blank" rel="noreferrer noopener">University of Arizona Health Sciences</a>, compared blood samples from nearly 2,000 adults in firefighting, health care, and other essential occupations to learn how job duties shape chemical exposure.



PFAS are <a href="https://www.earth.com/news/new-filtration-system-removes-forever-chemicals-from-water/" target="_blank" rel="noreferrer noopener">human-made compounds</a> prized for stain, water, and flame resistance. They coat cookware, clothing, carpets, packaging, and industrial foams. Because their molecular bonds are hard to break, the chemicals linger in air, soil, and water for decades and build up in living tissues.



<h2 class="wp-block-heading" id="h-firefighters-exposure-to-forever-chemicals">Firefighters' exposure to forever chemicals</h2>



The researchers measured serum PFAS concentrations in 280 firefighters, 787 health care workers, and 734 employees from other trades. Blood was collected between 2018 and 2021. 



For most workers, PFAS totals declined by six to 17 percent each year, yet measurable levels remained in every group by the study’s end. Firefighters topped the charts for several compounds, including PFHxS, Sm-PFOS, n-PFOS, and PFHpS. 



Health care workers ranked second overall and showed higher odds of two PFAS - Sb-PFOA and PFDoA - when compared with peers in other fields. They also had modest rises in PFHpS and PFUnA.



<h2 class="wp-block-heading" id="h-clues-from-previous-research"><a></a>Clues from previous research</h2>



Study senior author Kate Ellingson is an associate professor at the <a href="https://publichealth.arizona.edu/" target="_blank" rel="noreferrer noopener">Mel and Enid Zuckerman College of Public Health</a>.



“Our study reinforces previous research showing elevated PFAS levels among firefighters and suggests that health care workers may have unique sources of PFAS exposure as well,” said Ellingson.



“Our findings underscore the need to understand occupational exposure pathways for PFAS among different types of workers.”



Firefighters have long been flagged for exposure because their protective clothing and the foams used to quench fuel fires contain PFAS. 



Less is known about how nurses, surgeons, or technicians come into contact with the chemicals. Single-use gowns, surgical masks, sterile wraps, and even X-ray film may contribute, but few studies have investigated those items.



<h2 class="wp-block-heading" id="h-health-risks-linked-to-forever-chemicals">Health risks linked to forever chemicals </h2>



Study co-author Jeff Burgess is the director of the <a href="https://publichealth.arizona.edu/about/centers-institutes/center-firefighter-health-collaborative-research" target="_blank" rel="noreferrer noopener">Center for Firefighter Health Collaborative Research</a>.



“Almost all adults in the U.S. have detectable levels of certain PFAS, and people in occupations with more frequent exposure to PFAS-containing materials have been shown to exhibit higher serum concentrations of some PFAS,” said Burgess. 



“Research into occupational exposure to PFAS is vital to reduce the health risks associated with PFAS, including but not limited to increases in rates of certain <a href="https://www.earth.com/news/forever-chemicals-in-tap-water-increase-cancer-risk-by-up-to-33/" target="_blank" rel="noreferrer noopener">cancers</a>, increases in cholesterol levels, lower antibody response to certain immunizations, and increased rates of certain adverse reproductive outcomes.”



Although scientists are still mapping dose-response relationships, mounting evidence ties long-term PFAS exposure to thyroid dysfunction, immune suppression, and reproductive harm, as well as kidney, prostate, and <a href="https://www.earth.com/news/surprising-link-between-elephant-testicle-temperature-and-cancer-resistance/" target="_blank" rel="noreferrer noopener">testicular cancers</a>. That makes the new data especially relevant for workers who already confront other job-related dangers.



<h2 class="wp-block-heading" id="h-pfas-in-health-care-settings">PFAS in health care settings</h2>



“To date, PFAS exposure in <a href="https://www.earth.com/news/how-space-agencies-can-help-address-healthcare-challenges/" target="_blank" rel="noreferrer noopener">health care</a> settings has not been widely studied, and the potential sources of exposure remain unclear,” Ellingson said. He also noted that single-use surgical masks, surgical gowns, and X-ray film could be potential sources of PFAS exposure.



“Therefore, it’s important to further examine specific exposure routes and health consequences for firefighters and health care workers.”



The researchers suggest that manufacturers, hospitals, and fire departments audit supply chains to identify products treated with PFAS. Substituting safer materials where possible - and improving decontamination practices when replacement is not feasible - could lower cumulative dose.



<h2 class="wp-block-heading" id="h-avoiding-pfas-exposure">Avoiding PFAS exposure</h2>



Many PFAS formulas have been phased out in the United States, yet older stockpiles and imported goods keep the chemicals in circulation. 



The authors call for expanded monitoring of occupational exposures, stronger regulation of PFAS in consumer products and more public funding for exposure-reduction programs.



They also urge longitudinal studies to track how changing equipment or policies alters blood levels over time. Because PFAS can stay in the body for years, measuring declines after interventions will help pinpoint which strategies work best.



<h2 class="wp-block-heading" id="h-chemical-exposure-beyond-firefighters">Chemical exposure beyond firefighters </h2>



The Arizona results echo national surveys showing widespread but uneven PFAS contamination. They also highlight chemical exposure gaps: firefighters remain the most researched group, while other frontline roles - from paramedics to factory workers - receive far less attention.



By bringing health care personnel into the spotlight, the new study widens the search for hidden chemical risks at work. As communities push to remove PFAS from <a href="https://www.earth.com/news/snow-droughts-could-quadruple-by-2100-harming-water-supplies/" target="_blank" rel="noreferrer noopener">water supplies</a> and household goods, understanding workplace exposures becomes equally urgent.



The current findings provide a starting map - and a reminder that protecting those who protect the rest of us means looking beyond the obvious dangers of heat, smoke, and infection to the quieter threat of “forever chemicals.”



The study is published in the <a href="https://www.nature.com/articles/s41370-025-00753-7" target="_blank" rel="noreferrer noopener">Journal of Exposure Science &amp; Environmental Epidemiology</a>.



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Firefighters face elevated exposure to forever chemicals

A new study of frontline employees in Arizona reveals that firefighters carry the greatest load of per- and polyfluoroalkyl substances (PFAS) in their blood, while health care personnel also show moderate but notable elevations. The findings point to unseen hazards in everyday work gear and environments. The investigation, led by scientists at the University of Arizona Health Sciences, compared blood samples from nearly 2,000 adults in firefighting, health care, and other essential occupations to learn how job duties shape chemical exposure. PFAS are human-made compounds prized for...

Get out your umbrellas. And your rain boots. And your kayaks? Southern California is bracing for a strong storm slated to hit the area starting Friday and continuing through Saturday. Officials say that it will bring heavy, nonstop rain and strong winds. As with most bad weather in California, it will also potentially cause flash flooding and dangerous mudslides. 

Los Angeles and Ventura Counties are expecting as much as 6 inches of nonstop rain. South-facing foothills and coastal mountain areas could receive as much as 5 to 10 inches. The <a href="https://www.earth.com/news/snow-water-deficit-california/">storm</a> will create record-breaking rainfall totals for some areas of the state. 

Some areas, such as neighborhoods in the Fish Fire burn area of the city of Duarte, have issued evacuation notices for their residents, who are increasingly nervous. 

"I'm a little anxious knowing that we have pack up the house again, twice in one year to get out of our home. We got booted out when the Fish Fire hit, the fire department did a great job and kept us super safe, all of our homes were saved," Jill Brainard said to <a href="http://ktla.com/">KTLA</a>. "But this is a little different, you can't control mudflow and rain.”

Despite the overwhelming amount of rain that’s fallen in California over the past few months, experts say that the state’s five-years-long drought isn’t quite over. This is because the rainfall has been focused on the northern half of the state. In those areas, once-low reservoirs are brimming with water once again. 

The middle and southern parts of the state, however, are still suffering from moderate to severe levels of drought. Experts say that it will take more than one rainy winter to correct the problem. 

“Luckily, they got one record setting winter this year, which is great,” <a href="http://www.noaa.gov/">NOAA</a> meteorologist David Miskus said to <a href="http://www.washingtonpost.com/">The Washington Post</a>. “But what will happen next year? You don’t know what next winter will bring.” 

--

By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer

Think the nonstop rain is killing CA’s drought? Think again

Get out your umbrellas. And your rain boots. And your...

In recent years, scientists have sounded the alarm that the <a href="http://www.earth.com/news/ancient-ice-melts-warm/">ice</a> in the Arctic is melting at rates faster than previously expected. As the Arctic ice melts, seas will rise, causing a litany of problems throughout the globe, from a shorter hunting season for polar bears to a loss of the salt marshes that protect coastal areas. Now, scientists have come up with a plan that sounds like it’s out of a science-fiction fantasy: use giant pumps to thicken and refreeze Arctic ice. 

The idea comes from physicist Steven Desch and a team from <a href="http://www.asu.edu/">Arizona State University</a>. They tailored a plan to pump sea water and spray it over the top of the ice. The ice would naturally freeze during the long Arctic winter night, so no giant freezer would be required (thankfully). 

The project is a huge undertaking, as 1.4 meters of seawater would need to be pumped to the surface and applied to the already-existing ice. The pumps would exist on a network of buoys that would include the mega-hose, as well as windmills to power the pumps. Each pump would cover an areas of ice spreading approximately 15 football fields. 

In order to be effective, more than a couple of windmills would be needed to get the job done. In fact, the project would require about 10 million windmills to power the ice restoration.

Of course, the price tag would be astronomical, as well. Researchers expect the project to cost $50 billion each year over the ten-year expanse of the restoration. The pumps wouldn’t be a 100% fix; they would only work to reduce current losses or someone slow a future decline in ice levels.  

Research on the proposed mega-pump project was published in the journal Earth’s Future. 

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By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer 

Source: Steven Desch, <a href="http://www.asu.edu/">Arizona State University</a>

Scientists’ crazy idea to tackle the Arctic ice melt

In recent years, scientists have sounded the alarm that the...

Swiss skiers aren’t pleased this winter. While some parts of the Alps are covered in gloriously soft and powdery snow, their side of the mountains remains largely bare. This is because December 2016 was the driest in history. In fact, it was the most dry since record-keeping started more than 150 years ago. Ski buffs did not have a very merry Christmas, as there was very little snow for the third year in a row. 

Unfortunately, this picture isn’t likely to change in the years to come. Researchers have published a study in the journal<a href="http://www.the-cryosphere.net"> The Cryosphere</a> suggesting that man-made <a href="http://www.earth.com/image/kamchatka-peninsula-captured/">snow</a> may be the key to ski resort survival in the future. 

The discouraging news comes from those who know snow best: scientists with the Institute for Snow and Avalanche Research (SLF) and the<a href="http://cryos.epfl.ch"> Cryos Laboratory École Polytechnique Fédérale</a> in Switzerland. They predict that a whopping 70% of the snow cover on the Alps could disappear within the next 100 years.

They also predict that the Alpine winter season will become shorter. This means less time for people to ski, snowboard, and snowmobile their way through the beautiful Alps. In fact, if current trends continue, the season could start anywhere from half a month to an entire month later than it currently does. 

Some of this disaster may possibly be averted, however, if humans can maintain global temperatures and ensure that they don’t rise beyond 2°C. In that case, the snow cover reduction could be limited to 30% by 2100. 

"The Alpine snow cover will recede anyway, but our future emissions control by how much,” explained Christoph Marty, the lead author of the study. 

“The majority of the climate models used project slightly increasing winter precipitation towards the end of the century. However, since temperatures are clearly increasing simultaneously we may experience increasing rainfall and not snow fall," Marty said. "We hope our results convincingly show that even increasing winter precipitation cannot compensate for the effect of the strongly increasing temperatures.”

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By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer 
Source: Christoph Marty,<a href="http://cryos.epfl.ch"> Cryos Laboratory École Polytechnique Fédérale</a>

Do you like to ski? You won’t like this story.

Swiss skiers aren’t pleased this winter. While some parts of...

Breathe in and breathe out. Don’t take those breaths for granted – all of the life that’s walking around on this planet needs <a href="http://www.earth.com/news/low-oxygen-levels-delayed-evolution/">oxygen</a> in order to survive. It’s not just land-dwelling creatures, though. Sea life also needs oxygen, and scientists are increasingly worried that global warming may be affecting ocean oxygen levels.

We know, we know... Another bit of bad news about how global warming threatens to ruin everything. How does it even affect ocean oxygen levels, anyway? 

First, warmer surface waters absorb less oxygen than cold water. Second, warm water toys with the stratification of the ocean. This refers to the way that ocean waters have layers – with certain ones being warmer or colder and some having a more oxygen-rich supply than others. 

When the top layer of ocean water is incredibly warm, it weakens the circulation cycle of water to the surface, which means that less oxygen is transported into deep sea waters where it’s badly needed. All of this adds up to a total decrease in global oceanic oxygen inventory – and it’s due to global warming. 

The study, published in the journal<a href="http://www.nature.com/nature/index.html"> Nature</a>, is bad news for marine life. Dunke Schmidtko of<a href="http://www.geomar.de/en/"> GEOMAR Helmholtz Centre for Ocean Research Kiel</a> explained how less oxygen will possibly affect the fish population. 

“Since large fishes in particular avoid or do not survive in areas with low oxygen content, these changes can have far-reaching biological consequences, he said. A drop in the number of fish will also have an impact on the fishing industry and the economy of coastal areas. 

The team used measurements from the entire ocean to note how oxygen levels have dropped during the period of time included in their investigation. Although the researchers believe that natural processes may have caused the decrease, the results point to an overall increase in concentrations of carbon dioxide and higher temperatures. 

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By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer 

Source: Dunke Schmidtko,<a href="http://www.geomar.de/en/"> GEOMAR Helmholtz Centre for Ocean Research Kiel</a>

Unbelievable! Global warming is trashing ocean oxygen levels

Breathe in and breathe out. Don’t take those breaths for...

Ancient ice melts were caused by increases in air temperatures, right?

Don’t feel bad if you were nodding enthusiastically at the question, but you’re way off. Scientists have been confused for decades on how giant sheets of <a href="http://www.earth.com/image/camp-century-buried-waste/">ice</a> managed to melt during some of the coldest times during the last Ice Age. It defies all logic – but scientists think they may have uncovered the secret behind this Ice Age paradox. 

A research team including Professor Jeremy Bassis of the<a href="https://umich.edu/"> University of Michigan</a> looked at the behavior of the Laurentide ice sheet that used to cover a large part of North America. During the times when it would melt and splinter, weather temperatures were at their coldest, so scientists dug in to discover what else was going on.

What they found is that warm ocean water likely caused the ancient ice melts – not warm air, as was previously thought. While this provides answers to the strange behavior of the Laurentide, it also gives us a peek into our own future. 

"We've shown that we don't really need atmospheric warming to trigger large-scale disintegration events if the ocean warms up and starts tickling the edges of the ice sheets," said Bassis. "It is possible that modern-day glaciers, not just the parts that are floating but the parts that are just touching the ocean, are more sensitive to ocean warming than we previously thought."

This is important because scientists believe the same type of warming is at work on the Greenland ice sheet, as well as Antarctica. Researchers believe that as the Antarctic ice melts, it may raise sea levels by three feet or more. 

"What we are showing is that the models we have of this process seem to work for Greenland, as well as in the past so we should be able to more confidently predict sea level rise,” Bassis said.

The team’s findings were published in the journal<a href="http://www.nature.com/nature"> Nature</a>. 

--

By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer 
Source: Jeremy Bassis,<a href="https://umich.edu/"> University of Michigan</a>

Think ancient ice melts were caused by warm air? Wrong.

Ancient ice melts were caused by increases in air temperatures,...

Sounding like something out of a horror movie, scientists have been studying a phenomenon they’ve nicknamed the blob – an unusually warm patch of seawater that appeared off of the west coast of the U.S. in late 2014 and 2015. 

A boon to bathers, perhaps, warm patches of water can cause various effects on the marine environment. This particular pattern, however, affected the air quality in areas around Washington, Oregon, western Utah and northern California. 

How does warm <a href="http://www.earth.com/news/ocean-waves-cause-great-dying/">ocean</a> water affect air quality? It can increase ozone levels. As “the blob” created warmer temperatures, low cloud cover, and a much calmer air mass, conditions were perfect for ozone levels to skyrocket. Ozone originates from pollution caused by cars and factories, as well as phenomenon such as forest fires. When light from the sun hits the pollutant molecules, they turn into ozone. 

This would all be nothing more than an interesting scientific observation if not for the fact that ozone is hazardous to humans. That’s why the federal government regulates it and tries to reduce overall ozone levels. 

Initially, Dan Jaffe, the lead author of the blob study and a professor at<a href="https://www.uwb.edu"> University of Washington Bothell</a> thought something had gone wrong with the team’s readings. 

"At first we were like 'Whoa, maybe we made a mistake.' We looked at our sensors to see if we made an error in the calibration. But we couldn't find any mistakes," he said. "Then I looked at other ozone data from around the Pacific Northwest, and everybody was high that year.”

Since 2004, the team has been measuring ozone levels from the top of Mount Bachelor in central Oregon. The measurements in June 2105 were 12 parts per billion higher than average. At the same time, levels in Sacramento and Salt Lake City shot 70 parts per billion higher than the levels allowed by the<a href="https://www.epa.gov/"> Environmental Protection Agency</a>. 

Jaffe hopes that the study, published in<a href="http://agupubs.onlinelibrary.wiley.com/hub/journal/10.1002/(ISSN)1944-8007/"> Geophysical Research Letters</a>, will help scientists better understand the connection between warming temperatures and air quality. 

--

By Dawn Henderson, <a href="http://earth.com">Earth.com</a> Staff Writer  
Source: Dan Jaffe,<a href="https://www.uwb.edu"> University of Washington Bothell</a>

Oh, no! The blob attacks the U.S. west coast – sort of

Sounding like something out of a horror movie, scientists have...

Lonely Polar Bear takes desperate measures to find a mate as female polar bear travels to a new zoo. 

Not long ago, we brought you an article about how a Dutch zoo had started a program they were calling<a href="http://www.earth.com/image/tinder-orangutans-primates-date/"> “Tinder for orangutans”</a> using tablet technology to make love matches between male and female primates at the facility.

It seems that <a href="http://www.earth.com/news/philadelphia-zoo-mourns-oldest-aardvark/">zookeepers</a> have to double as matchmakers for various animal species. Often lacking opposable thumbs or useful typing skills, animals can’t simply take out a personals ad in order to find that special someone. 

(Imagine if they could, though: “Female seeking strong, aggressive male who likes to lead the pack. I enjoy taking short, back-and-forth walks in my enclosure and being fed exquisite dinners of leaves and grubs. When not pacing, I adore batting around the giant rubber ball provided for playtime. Would you like to join me in making a scratchy nest in the grass?”)

Ahem! But they can’t – and sometimes caretakers have to get creative in helping the furry ones find love.

This was the case at the<a href="https://www.toledozoo.org"> Toledo Zoo</a> in Ohio. They’ve actually shipped one of their bears off to a zoo near Chicago in hopes that she’ll make a connection with one of the male bears there.

The female is a 21-year-old polar bear named Nan. Her love vacation will send her to meet Hudson, a handsome male bear who resides at the<a href="https://www.czs.org/Brookfield-ZOO/Home"> Brookfield Zoo</a>. They won’t exactly be allowed to meet each other in person at first, however. They’ll enjoy small talk and spending time with one another in neighboring enclosures that are separated by a fence. 

<a href="https://www.aza.org">The Association of Zoos and Aquariums</a> arranged the move through its polar bear species survival program. Nan was born in the wild, making her a genetically-important bear. An orphan, she was discovered near Barrow, Alaska, before spending 16 years at the Toledo Zoo. Let's hope this lonely polar bear finds the love she was looking for.

–

By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer

&nbsp;

Lonely Polar Bear makes an epic journey to find love

Lonely Polar Bear takes desperate measures to find a mate...

Today’s pattern of <a href="http://www.earth.com/news/water-waste-converts-to-energy/">water</a> usage is one that’s largely governed by waste. People leave the tap running while they brush their teeth. For most Americans, the shower isn’t simply a place to get clean; they stay under the hot water each morning until they experience a virtual rebirth and feel ready for the day. Between cooking, drinking, cleaning, and bathing – it takes a lot to keep our water cycle running every day. 

This is particularly true in urban areas, home to 80% of the U.S. population. The need for energy, agricultural products, and clean drinking water keeps growing as populations continue to rise. Because of this, scientists are working to figure out how we can make better use of our urban water supply. 

Engineers with the<a href="https://www.nsf.gov"> National Science Foundation</a> have created a fascinating design – an illustration of what they’re calling the urban water cycle "of our dreams.” They believe that systems like this could make an efficient engineered water cycle a reality. 

The process involves purification using membranes that would filter water removed from lakes, rivers, and reservoirs. This could be used as drinking water.

Another source of drinking water would be desalinated water. The ocean is a huge body of water – why not use it to quench our thirsts?

Healthy crops also need clean, desalinated water, so proper irrigation would also play a part in the system. The water for irrigation would need to be monitored for contaminants, high salt levels, or anything that may disrupt crop production. 

Treatment of wastewater provides another eco-friendly potential. We know it sounds gross, but it really is possible to remove microbes and recycle wastewater for water, as well as clean energy. 

The engineers also include aquaponics in the picture. This combines acquacultue (raising fish) with hydroponics (raising plants in soil-free conditions). 

Reuse of materials like greywater and biosolids top off the water cycle utopia imagined by the team. Greywater from baths, sinks, and washing machines could be reused for flushing toilets and irrigating lawns. Meanwhile, solid waste is ideal for fertilizer and creating clean energy. 

This vision could change the way we interact with our water, treating it like the precious commodity it truly is. 

--

By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer 

Source:<a href="https://www.nsf.gov"> National Science Foundation</a>

&nbsp;

NSF scientists create the urban water cycle "of our dreams”

Today’s pattern of water usage is one that’s largely governed...

<a href="http://www.earth.com/news/archaeological-lost-kingdom-dark-ages/">Archaeologists</a> often uncover evidence of life on earth millions of years ago. A scientist has just returned from an Iranian desert with a discovery that ups the ancient ante: material from an ancient meteorite that originated some 4.5 billion years ago. 

Yes – that’s billion with a “b.” 

Viktor Grokhovsky and three other scientists from<a href="https://urfu.ru/en/"> Ural Federal University</a> made their find in the Lut desert, also known as Dasht-e-Lut. They believe that the incredibly dry conditions there helped preserve the matter, allowing them to bring it in for closer examination. Half of the material collected will stay in Iran for testing, while the other half was shipped to a Russian test lab. 

The material discovered weighed roughly 29 pounds and consisted of 70 samples, 10 of which are believed to be from the same kind of ancient meteorite. 

The meteorite is reminiscent of one that crashed near the Russian city of Chelyabinsk in 2013. The rock that fell during that incident is the largest one to have hurtled to earth in over 100 years. It caused a huge explosion near Chelyabinsk – creating a shock wave as powerful as 20 atomic bombs. Grokhovsky was part of the team that recovered fragments of that meteorite, as well. 

“In order to determine the age of the found fragments, the scientist should consider when a fragment was formed in space, when it split from its parent body and how much time has it spent on Earth,” Grokhovsky told<a href="https://sputniknews.com"> Sputnik News</a>. 

“'Based on the isotopes it will be possible to talk about cosmogonist age, that is, how long the outer body of the meteorite was in the form of an asteroid.”

To provide some perspective on the meteorite’s age, 4.5 billion years ago would place the rock’s origin sometime around the time our entire universe was born. 

--
By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer

Russian scientists discover ancient meteorite material in Iran

Archaeologists often uncover evidence of life on earth millions of...

Scientists find a way to reuse our water waste AND make thermal <a href="http://www.earth.com/news/waste-to-energy-plants/">energy</a>. We waste gallons of water each day, every time we run the sink, do laundry, wash dishes, or take a bath or shower. That water, known as greywater, could potentially be reused, but most homes and buildings don’t have the capability of recycling it.

This is even more of a concern in places where water is a precious commodity. Recycling greywater would mean that fresh, clean water could be used for drinking and cooking, rather than lost after being used for washing.

Architect Maria Paz Gutierrez (a mentor at the<a href="http://www.berkeley.edu"> University of California, Berkeley</a>) hopes to change all of that. Working with Slav Hermanowicz, an environmental engineer, and bioengineer Luke Lee, she’s found a way to put greywater to work. It’s job? Making thermal energy.

While greywater can’t be recycled as drinking water – it’s not clean enough for that – it can be reused for things like flushing toilets and washing laundry. The system created by Gutierrez would send that greywater cycling back through the system to be used a second time, but it would also be used to make thermal energy that would lower electricity bills.

"This is the future of sustainable building systems--synergistic optimization processes that are win-win from the local to the global scales," said Gutierrez. "The end user benefits because they're using less water and paying less for electricity or gas; the community benefits because it has less water to treat; the environment benefits because we're not going to be contaminating aquifers. That's the fundamental difference between this design and other building systems.”

The team’s research was supported by the<a href="https://www.nsf.gov"> National Science Foundation</a>. While the technology is currently in its infancy, Gutierrez says it could be available for commercial purposes within 10 years. Her goal is to bring the price point down to one that would be realistic in areas where water is scarce. We are looking forward to a future where our water waste is converted into something useful.

–

By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer 

&nbsp;

Amazing scientists turn our water waste into energy

Scientists find a way to reuse our water waste AND make...

Imagine: you’re deep within the Brazilian <a href="http://www.earth.com/news/gibbon-new-species-found/">rainforest</a> when you discover huge, geometric trenches. Some of the huge shapes – squares and circles – measure as large as a city block. The trenches themselves are up to 13 feet deep and as much as 12 yards wide. These earthworks are a reality, and archaeologists believe they were built by ancient people around 2,000 years ago. They also found broken ceramics near the entrance to the shapes, but are unsure why the materials were left there. 

The discovery of the ancient geometric earthworks has unearthed a stunning realization: rainforest areas that were previously thought to be undisturbed by humans until 15th century explorers arrived from Europe were actually subject to manipulation by the ancient people who built these glyphs – as well as those who came before them. 

“A lot of people have the idea that the Amazon forests are pristine forests, never touched by humans, and that’s obviously not the case,” said Jennifer Watling, an archaeologist the <a href="http://www5.usp.br/english/?lang=en">University of São Paulo</a>, Brazil, told the<a href="http://www.nytimes.com"> New York Times</a>. 

Researchers have found evidence of sustainable farming practices carried out thousands of years before the trenches were constructed.

They did this by carefully examining the environmental history of two of the areas in the Amazon rain forest in which glyphs are located. By analyzing soil samples, scientists were able to put together a story of ancient vegetation, as well as burnings that took place to make openings in the forest. Researchers believe that ancient forest dwellers may have planted maize or squash. 

Somewhat like methods now known as agroforestry, the ancient people of the Amazon took care not to burn or clear-cut large swaths of land. Instead, they used sustainable farming at its best. Watling says that the biodiversity that exists in the Amazon today is due to the practices that were started all those many years ago and continued by indigenous groups even today.

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By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer

How ancient people changed the face of the rainforest

Imagine: you’re deep within the Brazilian rainforest when you discover...

Climatologists and conservationists have sounded the alarm about the potential impact of rising sea levels. Now, they’re adding another item to the list of things we stand to lose if the sea moves in and overtakes areas along the coast: our salt marshes. 

Salt marshes are areas along the coast that are frequently flooded as the tide ebbs and flows, leaving saltwater that’s home to a diversity of marine life. Shellfish, crustaceans, and many different species of seabirds depend on salt marshes for safety and survival. 

As <a href="http://www.earth.com/news/ancient-sea-level-shift/">sea levels</a> rise, those salt marshes could be completely submerged. This is according to scientists working with the federal government. They say that of the eight of the coastal salt marshes in the U.S., four will disappear in 350 years if the current rate of sea level rise continues. 

When the marshes disappear, so will the species that depend on them for their food and habitat. Among these species is the Ridgeway’s rail, a rare bird that lives in the salt marshes south of the Los Angeles area.  

Neil Ganju, the lead author of the salt marsh study, said that the loss of this bird species is a concrete indication of what we stand to lose if conditions don’t change. 

“That’s something that's happening right in front of our eyes — an endangered bird that doesn't have anywhere to nest anymore,” he said. 

The research group, whose findings were published in the journal <a href="http://www.nature.com/ncomms/">Nature Communications</a>, used remote sensing techniques and aerial photography to record the nation’s marshes to get an idea of current conditions. They looked at how much of each marsh was covered in plants versus how much was submerged by water.

In addition to loss of marine species, coastal communities will be affected when they lose the erosion protection afforded by the salt marshes. Researchers hope that the study can be used by land managers and conservationists to create a strategy to save the salt marshes from rising sea levels. 

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By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer

Rising sea levels will kill off salt marshes, scientists warn

Climatologists and conservationists have sounded the alarm about the potential...

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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Remote sensing will revolutionize the way we monitor trees

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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Lesotho: Africa's "Kingdom in the Sky"

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



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



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



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



Video Credit: NASA Goddard



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



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Wetlands are a major source of methane emissions

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



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



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



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



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



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



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



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



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



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



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The rapid retreat of the Columbia Glacier

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



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



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



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



Video/ Image Credit: NASA Goddard



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



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2022 illustrated the consequences of a warming climate

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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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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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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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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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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Melt ponds on the Greenland Ice Sheet

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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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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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Tracking changes in Earth's water cycle

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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

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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

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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



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Weeds are becoming increasingly resistant to herbicides

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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



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NASA monitors giant dust storms on Mars

[sendtonews key="eAVLRk51oJ-1826888-12187" type="single"] Today’s Video of the Day from the...

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Today's Video of the Day from the <a href="http://www.esa.int/">European Space Agency</a> features Qeshm Island in the Strait of Hormuz. This strait provides the only sea passage from the Persian Gulf to the open ocean.



Qeshm is separated from the Iranian coast by the Clarence Strait, also known as Khuran.&nbsp;The Hara Forest Protected Area is a network of shallow waterways and forest located between the island and the mainland. This protected region is home to sea turtles, snakes, and more than 150 species of migrating birds.



Qeshm is famous for its wide range of&nbsp;ecotourist&nbsp;attractions, such as the&nbsp;Hara marine forests. According to environmentalists, about 1.5 percent of the world birds and 25 percent of Iran's native <a href="https://www.earth.com/news/female-hummingbirds-avoid-sexual-harassment-by-looking-like-males/">birds</a> annually migrate to the forests, which are the first national geo park in Iran.



Tourists are also drawn to the island to see an age-old Portuguese&nbsp;fort, historic mosques, the&nbsp;Seyyed Mozaffar&nbsp;and&nbsp;Bibi Maryam&nbsp;shrines, and the "Valley of Stars."



The average temperature on the island is 81 degress and the region is often hot and humid. From June to August, the island is described as being oppressively hot. The ideal time to visit is during the winter season. 



Video Credit: ESA&nbsp;



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



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

Qeshm Island in the Strait of Hormuz

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Inhambane Bay in southeast Mozambique.&nbsp;



"Inhambane Bay is a deep inlet into which the small Mutamba River flows," says ESA. "On one side of the bay lies the historical city of Inhambane, capital of the Inhambane Province, while the sister city of Maxixe, the economic capital of Inhambane, sits across from it. The province is the second largest grower of cashews, after Nampula, and it also produces coconut and citrus fruits."



The beaches of Barra and Tofo are popular with tourists. There are also coral reefs along the long coastline of Inhambane, making it an ideal destination for scuba diving and snorkeling.



"Mozambique’s extensive coastline heightens the country’s vulnerability to tropical cyclones that develop in the Indian Ocean as well as storm surge flooding," says ESA.



"More than half of the population lives in low lying coastal areas, putting communities at risk. Inhambane Bay was dangerously close to where Cyclone Idai made landfall in 2019 causing widespread destruction to the country."



Video/ Image Credit: ESA



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



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

Inhambane Bay in southeast Mozambique

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency </a>&nbsp;features the Kangerlussuaq Glacier, one of the largest tidewater outlet glaciers in Greenland. The glacier is located on the east coast of the Greenland ice sheet.



As human-induced climate change continues to drive up temperatures, global ice loss is accelerating at an alarming rate. ESA reports that, over the past decade alone, 3.5 trillion tons of ice have melted from the Greenland ice sheet. This is enough to cover the UK with meltwater 15 meters deep.



Based on satellite imagery, researchers determined that Kangerlussuaq entered a new phase of rapid retreat and acceleration in 2017. In their study, published in <a href="https://www.frontiersin.org/articles/10.3389/feart.2019.00123/full">Frontiers in Earth Science</a>,&nbsp; the experts report that the glacier's ice front is now at its most retreated position since the early 20th century.



"Given Kangerlussuaq’s previous impacts on both the magnitude and pattern of ice sheet wide mass loss, we predict that its new phase of retreat, acceleration and thinning will markedly enhance the south-east region’s contribution to increasing discharge from the ice sheet," wrote the study authors.&nbsp;&nbsp;



"More broadly, accurate forecasting of the ice sheet’s contribution to sea level rise will require a deeper understanding of, and responses to, these non-linear ice dynamic processes."



Video Credit: ESA



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



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

Kangerlussuaq Glacier on the Greenland ice sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the complex relationship between ocean and climate. ESA's Climate Change Initiative will help us understand how oceans influence the climate and how climate change is impacting the oceans.&nbsp;



"Earth’s oceans are huge heat stores, soaking up 93% of the excess heat from human activity over the past 70 years. Ocean currents redistribute heat around the planet, from the Equator to the poles. Where this ocean heat goes influences weather patterns and regional climate," explains ESA.



"As well as absorbing heat, oceans are a natural carbon sink, absorbing a quarter of carbon dioxide emissions from human activity. This has led to the acidification of ocean water, threating marine life."



The amount of heat and carbon dioxide soaked up by the ocean depends on specific variables, including phytoplankton, temperatures, waves, salinity, and ice cover. Satellites can be used to measure these variables from space.



"From their unique vantage point, satellites provide key information for understanding the complexities of our planet and monitoring environmental issues," says ESA.



Video Credit: ESA



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



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

Ocean heat influences regional climate

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the importance of monitoring the shape of the sea surface, which is constantly changing. These observations have many applications, such as ship routing, <a href="https://www.earth.com/news/the-modem-ocean-is-a-tough-place-for-whales-to-survive/">ocean</a> current forecasting, and debris tracking.



"A project supported by the Discovery element of ESA’s Basic Activities recently investigated a new technique to measure sea surface topography very precisely," reports ESA.



"The technique involves looking at satellite navigation (GNSS) signals that have been reflected off of the sea surface at very low angles. At these so-called grazing angles, waves and surface roughness have very little impact on the reflection process; the sea surface acts as a very smooth mirror."



Estel Cardellach is the principal investigator at the Institute for Space Studies of Catalonia, who first submitted the idea for the project.



“In a mirror-like reflection the phase of the signal can be tracked – it is continuous," said Cardellach. "Different surface heights result in different phase measurements. It gives a very precise measurement of the surface altitude at a few centimetres’ precision.”



The researchers developed a GNSS receiver and set up an experiment in the Balaeric Islands to collect signals from the receiver that were reflected off the sea surface. Ultimately, these signals will provide improved measurements of the shape of the sea surface.



Image/ Video Credit: ESA



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

Monitoring the dynamic shape of the sea surface

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