This week, the October sky is treating us to a brilliant display that you won't want to miss -- the Hunter's supermoon, a rare comet, and the Orionids meteor shower. 



Comet C/2023 A3 Tsuchinshan-ATLAS is a rare comet making its journey past Earth, offering a unique opportunity to witness its tail of icy particles glistening against the dark canvas of space.



In addition, this week features the biggest supermoon of the year, Hunter's supermoon, which will illuminate the night with a breathtaking orangish glow.



And let's not forget the dazzling Orionids meteor shower, where you can catch glimpses of shooting stars streaking across the sky, resulting from debris left by Halley's Comet.



There's truly something for everyone in this celestial display. So, grab a warm jacket, perhaps a pair of binoculars for a closer look.



<h2 class="wp-block-heading" id="h-80-000-year-old-time-traveler">80,000-year-old time traveler</h2>



Meet <a href="https://www.earth.com/news/most-anticipated-comet-of-2024-returns-this-weekend-after-80000-years/" target="_blank" rel="noreferrer noopener">Comet C/2023 A3 Tsuchinshan-ATLAS</a>, a celestial wanderer that's been on an 80,000-year long odyssey. 



From the outermost regions of our solar system, this comet embarks on an interminable journey around the sun. The last time it paid us a visit, our ancestors were just crafting civilizations.



Although its closest Earth pass was on October 12, it remains visible for the remainder of the month. 



So, how do you spot it? An hour into the sunset, turn your sight to where the sun has sunk and voila. The elusive comet, while difficult to sight with the naked eye, could be seen with a pair of binoculars. 



Don't miss this rare chance to witness a phenomenon that won't return for another 80,000 years.



<h2 class="wp-block-heading" id="h-hunter-s-supermoon">Hunter's Supermoon</h2>



Next up...mark your calendars for October 17, 2024. The night sky is all set to parade the Hunter's Moon, but this year it's not just a full moon -- <a href="https://www.earth.com/news/hunters-supermoon-prepares-to-illuminate-the-october-skies/" target="_blank" rel="noreferrer noopener">it's a supermoon</a>! 



This phenomenon occurs when the moon is at its closest to Earth during its full phase, making it larger and brighter.



The Hunter’s Moon got its name from the historical practice of hunters utilizing the bright moonlight to track game and gather food in preparation for winter. This full moon rises soon after sunset, extending the period of illumination more than usual.



As it ascends, the Hunter’s Moon appears particularly large and orange, a visual effect produced by its lower position on the horizon and the scattering of light in the atmosphere.



This lunar phase holds cultural significance across various traditions, representing a time for preparation and gathering, underscoring the importance of readiness for the impending colder months.



While contemporary life may not depend on this extra light to hunt or complete outdoor tasks, the Hunter’s Moon remains a fascinating reminder of nature’s rhythms and the cyclical changes of the seasons.



<h3 class="wp-block-heading" id="h-what-puts-the-super-in-the-supermoon">What puts the 'super' in the supermoon?</h3>



So, you might ask, "What's so super about the supermoon?" As Anna Gammon-Ross, a seasoned astronomer from the <a href="https://www.rmg.co.uk/" target="_blank" rel="noreferrer noopener">Royal Museums Greenwich</a> explains, a supermoon occurs when a full moon is nearest to Earth in its orbit. 



This cosmic alignment results in a moon that's roughly 14% larger and 30% brighter than usual. On seeing the radiant orb hanging low in the sky, you'd agree that the supermoon does indeed earn its name.



<h2 class="wp-block-heading" id="h-shooting-stars-orionids-meteor-shower">Shooting stars: Orionids meteor shower</h2>



The Orionids meteor shower is one of the highlights of the October night sky. These meteors are actually tiny bits of dust left behind by <a href="https://www.earth.com/news/orionids-meteor-shower-peaks-this-weekend-heres-what-to-expect/" target="_blank" rel="noreferrer noopener">Halley's Comet</a> as it travels through the solar system. 



When Earth passes through this trail of debris, the particles slam into our atmosphere at incredible speeds -- up to 148,000 miles per hour! As they burn up, they create those bright streaks of light we love to watch.



What's cool about the Orionids is that they're known for their fast and bright meteors, often leaving glowing trails that last for a few seconds. 



The best time to catch them is in the early morning hours before dawn, when the <a href="https://www.earth.com/news/betelgeuse-one-of-our-brightest-stars-will-vanish-from-sight-next-week/" target="_blank" rel="noreferrer noopener">constellation Orion</a> (which gives the meteor shower its name) is high in the sky. 



Just find a comfy spot away from city lights, let your eyes adjust to the darkness, and enjoy the show -- no special equipment needed.



<h2 class="wp-block-heading" id="h-skywatching-101">Skywatching 101</h2>



All set to behold these cosmic spectacles? Here are some tips to enhance your experience:



<ul class="wp-block-list">
<li>Search for a location far from city lights to escape light pollution. </li>



<li>Always check the weather. Clear skies are your best pals for skywatching. </li>



<li>Bring your binoculars. For the supermoon, they are optional, but they'll help with the comet and make meteor watching more fun. </li>



<li>Comfort is key. Dress warmly and consider bringing a blanket or a chair. </li>



<li>Patience is a virtue. Allow around 20 minutes for your eyes to adjust to the darkness.</li>
</ul>



These celestial showstoppers make for some spectacular photography opportunities. 



For the supermoon, a camera with manual settings, plus a tripod for steadiness, can help capture stunning shots. 



For the meteors, a wide-angle lens with a long exposure setting can help you nab a shooting star.



<h2 class="wp-block-heading" id="h-more-wonders-to-watch">More wonders to watch</h2>



October's skywatching doesn't end with the comet, supermoon, and meteor shower. 



Throughout the month, Venus brightly greets morning risers, while Saturn and Jupiter are earlier night visitors. 



Mars is a bit elusive but worth seeking out. Several constellations, such as Cassiopeia and Perseus, also adorn the night sky. 



If you're a novice stargazer, a smartphone app can help you navigate the starry expanse.



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Hunter's supermoon, a comet, and Orionids meteors are sharing the sky this week

This week, the October sky is treating us to a brilliant display that you won't want to miss -- the Hunter's supermoon, a rare comet, and the Orionids meteor shower. Comet C/2023 A3 Tsuchinshan-ATLAS is a rare comet making its journey past Earth, offering a unique opportunity to witness its tail of icy particles glistening against the dark canvas of space. In addition, this week features the biggest supermoon of the year, Hunter's supermoon, which will illuminate the night with a breathtaking orangish glow. And let's not...

Were Neanderthals the first interior decorators?. When thinking of Neanderthals, no-one considers them as interior decorators in fact many think of Neanderthals as unthinking, uni-browed beasts that were singularly focused on survival. Could it be that they shared something in common with Martha Stewart? Researchers believe they have found evidence that Neanderthals had an interest in home decoration.

They base their theory on the discovery of a piece of brown limestone found at an archeological dig site in Croatia. The brown stone has many interesting black markings on it and scientists think that Neanderthals may have collected it because it was beautiful.

This differs from the previous belief that Neanderthals were incapable of assigning symbolism to objects. Because the rock had not been modified in any way, researchers don’t believe it was collected to be used as a tool. While it does have a piece that was broken away, that break likely happened while the rock was being stored or transported after it was excavated around 1900.  

At the same <a href="http://www.earth.com/news/fossilized-footprints-show-reptiles-rise/">dig</a> site, teams have also found <a href="http://www.earth.com/news/mining-will-expand-at-alaska-bald-eagle-preserve/">eagle</a> talons that were fashioned into crude jewelry. At other sites, they’ve found shells colored with pigment. Because these items would have served no purpose as tools, it’s quite striking that Neanderthals made an effort to collect and keep them. This suggests that they had a sense of curiosity, as well as the ability to recognize beauty.

Over 1,000 items were collected from the site, but the piece of limestone went overlooked for years. It’s a subtle decoration, not as attention-getting as the 25,000-year-old cave paintings that have been discovered in what is now modern-day France. The cave paintings were made by modern day humans. By comparison, the Neanderthals who collected the piece of rock did so nearly 130,000 years ago. This rock was collected more than 100 years ago and added to the <a href="http://www.hismus.hr/en/">Croatian Natural History Museum</a> in Zagreb.

It recently attracted attention from preeminent researchers including David Frayer, a professor emeritus of <a href="http://www.earth.com/news/american-alligators-6-million-years-older-previously-believed/">anthropology</a> at the University of Kansas. He reexamined the rock and wrote a paper which was published in<a href="https://www.google.com/search?client=safari&amp;rls=en&amp;q=Comptes+Rendus+Palevol&amp;ie=UTF-8&amp;oe=UTF-8"> Comptes Rendus Palevol</a>

Talking of the rock, he said: "If we were walking and picked up this rock, we would have taken it home… It is an interesting rock."

It appears we have a thing or two to learn from the first interior decorators and their style.

–

By Dawn Henderson,<a href="http://earth.com"> Earth.com</a> Staff Writer 

Credit: David Frayer, <a href="https://www.ku.edu/">University of Kansas</a>

Image credit: David Frayer, <a href="https://www.ku.edu/">University of Kansas</a>

Were Neanderthals the first interior decorators?

Were Neanderthals the first interior decorators?. When thinking of Neanderthals,...

Reopened Silk Road route swaps horses for trains. Hundreds of years ago, merchants traveled the Silk Road from <a href="http://www.earth.com/news/china-ivory-trade-ban/">China</a> to <a href="http://www.earth.com/news/european-union-celebrates-paris-agreement-climate-change/">Europe</a>, bringing silk, paper, gunpowder, and various exotic goods to trade. Today, the route is being revived with the introduction of a 7,456-mile train route from China to London. 

China’s East Wind train company is celebrating the debut of its Silk Road route that will run from Yiwu, a manufacturing town in East China, to Great Britain. It will take the train 16 days to complete the journey, and it will bring 34 carriage loaded with goods made in Yiwu.  

The new train route is expected to herald in a new era in trade relations between the UK and China. Goods sent via the train route will travel faster than if they traveled via a container ship. Train shipping is also less expensive than shipping by air. 

The East Wind from Yiwu to London will start out running once a week on a trial basis. East Wind, owned by China’s Yiwu Timex Industrial Investment, also features a route from Madrid to Spain that runs twice a week.

The Silk Road journey has always been a difficult one. It features a route that winds through treacherous mountains, around blazing deserts, and across endless miles of the Russian steppe. Before the advent of wheeled travel, merchants who ventured on the Silk Road had to have a constant supply of fresh horses to complete their journey.

Today’s Silk Road may not require fresh horses, but it does require different trains. The route pushes through Russia, Kazakstan, Belarus, Poland, Belgium, and finally France, all before it arrives in London. Because each country has different rail gauges on its train lines, the same train can’t complete the entire journey.

--

By Dawn Henderson, Earth.com Staff Writer

Reopened Silk Road route swaps horses for trains

Reopened Silk Road route swaps horses for trains. Hundreds of...

Ever wonder how Leonardo DiCaprio’s character in The Revenant would have fared during that <a href="http://www.earth.com/news/ecological-traps-pose-big-risks-grizzly-bears/">grizzly bear</a> attack if he had been able to transform into a pack of wolves? Thanks to spectacular photographs from British vacationer Tom Littlejohns, you can almost picture it.

On a snow covered hilltop in the Rocky Mountains of Montana, a lone deer nibbles on the foliage of an evergreen. Deer are browsers, feeding primarily on young leaves and soft twigs.

The serenity of the scene swiftly gives way to violence as a pack three wolves ambush the deer, cornering her on a clearing near the edge of a cliff. She tries to run back into the thicket of the woods, but they have her surrounded. There is no escape.

Moments later, the three wolves feed greedily on the carcass of the deer. 

Thanks to expanding human populations, North American gray wolves had almost disappeared from the continental United States by the 1940s. However, a program based in central Idaho and Yellowstone Park proved successful in reintroducing the species to regions in northern Minnesota, northern Wisconsin, northern Oregon, Washington, Idaho, Michigan’s Upper Peninsula, and Montana.

One of them moves too close to the deer leg in another’s mouth on and a brawl ensues. Noise from the fight and the smell of the deer’s fresh blood attract the attention of a six and a half foot long grizzly bear.

The wolf not involved in the tussle turns and moves to pounce on the would-be plunderer. But she quickly discovers she is no match for the lumbering giant and runs off to hide the woods.  

The other two wolves move in to defend their food, but even at their most ferocious, the wolves cannot match the grizzly’s size and strength. The bear chases the wolves away and enjoys the fresh deer dinner.

All that is to say Leonardo’s character would have still lost.

<a href="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.12.40-PM.png"><img class="aligncenter size-medium wp-image-130388" src="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.12.40-PM-300x199.png" alt="screen-shot-2017-01-16-at-3-12-40-pm" width="300" height="199" /></a>

<a href="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.13.07-PM.png"><img class="aligncenter size-medium wp-image-130386" src="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.13.07-PM-300x184.png" alt="screen-shot-2017-01-16-at-3-13-07-pm" width="300" height="184" /></a>

<a href="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.13.19-PM.png"><img class="aligncenter size-medium wp-image-130385" src="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.13.19-PM-300x198.png" alt="screen-shot-2017-01-16-at-3-13-19-pm" width="300" height="198" /></a>

<a href="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.12.52-PM.png"><img class="aligncenter size-medium wp-image-130387" src="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.12.52-PM-300x219.png" alt="screen-shot-2017-01-16-at-3-12-52-pm" width="300" height="219" /></a>

<a href="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.13.41-PM.png"><img class="aligncenter size-medium wp-image-130384" src="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-3.13.41-PM-300x223.png" alt="Photos taken by a British vacationer capture wolves hunting down a deer, only to have their meal stolen by a hungry grizzly bear." width="300" height="223" /></a>

--

Photos: Tom Littlejohns

Written by Darryl Joseph, Earth.com Staff Writer

Grizzly bear caught stealing dinner from wolves

Ever wonder how Leonardo DiCaprio’s character in The Revenant would...

Two years ago, the former prime minister of Oslo urged drivers in the city to purchase diesel cars because they emit less carbon dioxide. On Tuesday, the city council will ban <a href="http://www.earth.com/news/four-major-cities-diesel-ban/">diesel-fueled vehicles</a> from Oslo’s streets for 48 hours in an attempt to cut down on <a href="http://www.earth.com/image/a-decade-of-change-for-nitrogen-dioxide/">nitrogen dioxide</a>, another harmful gas.

While some cities like Paris have implemented occasional driving bans in order to combat smog, the Oslo ban is different in that it only targets vehicles that run on diesel. This has many drivers upset, taking to the internet to voice their displeasure and ask politicians to make up their minds. 

Mazyar Keshvari from Oslo’s populist right Progress Party thinks citizens have a right to be angry after they were encouraged to ditch their gasoline-guzzlers for diesel-fueled cars. He calls the government’s push towards diesel vehicles a “swindle of Norwegian motorists” in an interview with TV2. 

Other politicians disagree. Lan Marie Nguyen Berg, a city councillor in Greens, reminds citizens that the ban works to protect those with respiratory problems that are aggravated by CO2. This is a particular concern for small children and the elderly. These concerns aren’t unfounded: the<a href="https://www.fhi.no/en/"> Norwegian Institute of Public Health</a> reports that in Oslo, 185 people die prematurely each year due to health issues caused by air pollution. 

Despite the controversy, the ban has generated multi-party support. In 2016, a city council made up of Greens and Labour party members laid the framework for the ban. Response from citizens hasn’t been completely negative. One man took to the Facebook page of Verdens Gang, a Norwegian newspaper, to voice his support for a permanent ban on all diesel vehicles in large cities.

--

By Dawn H., Earth.com Staff Writer

Two-day ban leaves Oslo diesel drivers fuming

Two years ago, the former prime minister of Oslo urged...

For the past 5 years, California has been plagued with a catastrophic <a href="http://www.earth.com/image/southern-california-drought-continues/">drought</a> that has led to water restrictions and serious concerns about crop production. But recent photos taken from space indicate that the Golden State's water woes may finally be over. 

The photos, released by <a href="http://visibleearth.nasa.gov/view.php?id=84099">NASA</a>, show the striking difference between the effects of the catastrophic drought on the California landscape in January 2014 and January 2017. Satellite images show a deep snowpack, a good indication for lakes and rivers as it melts during the warmer months. The images also reveal gloriously green vegetation and rivers that are now running freely.

<a href="http://www.earth.com/wp-content/uploads/2017/01/2014-CA.png"><img class="alignleft wp-image-130366 size-medium" src="http://www.earth.com/wp-content/uploads/2017/01/2014-CA-250x300.png" alt="2014-ca" width="250" height="300" /></a> <a href="http://www.earth.com/wp-content/uploads/2017/01/2017-CA.png"><img class="alignright wp-image-130365 size-medium" src="http://www.earth.com/wp-content/uploads/2017/01/2017-CA-251x300.png" alt="2017-ca" width="251" height="300" /></a>

This abrupt turnaround comes mostly due to a series of strong storms that hit the state last week. They brought intense rains that caused rock slides, accidents, and destruction that included the toppling of the iconic <a href="http://www.earth.com/news/tunnel-tree-final-bow/">Pioneer Cabin Tree</a> in Big Trees State Park. The storms dumped 21 inches of water onto northern California in just two weeks, putting some neighborhoods underwater. The Russian River overflowed its banks, closing roads and stalling cars that ventured into the flooded roadways.

Despite the destruction, the rainfall has been a welcome relief for climatologists, farmers, and people who enjoy California’s rivers and lakes. Reservoirs in Northern California have reclaimed nearly one million acres of storage according to a climatologist for the California Department of Water Resources. Before and after photos of Brown’s Ravine and Lake Oroville show a striking difference in water levels.

<a href="http://www.cnn.com/2017/01/13/us/california-drought/index.html">CNN</a> reports that the state is currently only 42 percent drought free. Talking to the New York Times, Felicia Marcus, the head of California’s Water Control Resources Control Board, was cautiously optimistic. “It’s a little early to have a drought’s over party,” she said. However, with more heavy rain expected, the numbers will likely continue to improve.

&nbsp;

<a href="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-10.27.11-AM.png"><img class="alignright size-medium wp-image-130368" src="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-10.27.11-AM-300x214.png" alt="screen-shot-2017-01-16-at-10-27-11-am" width="300" height="214" /></a> <a href="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-10.27.21-AM.png"><img class="alignright size-medium wp-image-130367" src="http://www.earth.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-16-at-10.27.21-AM-300x214.png" alt="screen-shot-2017-01-16-at-10-27-21-am" width="300" height="214" /></a>

--

Photos: NASA, Kelly M. Grow/California Department of Water Resources

California’s thirst: is the catastrophic drought finally over?

For the past 5 years, California has been plagued with...

A new study offers an intriguing new possibility for the formation of life on planet Earth: ancient viruses infecting single-celled bacteria.

Scientists have known for a while that when a virus infects a cell, it reprograms it from its original function and turns it to replicating the virus. HIV, for example, turns white blood cells that help protect the body from infections into virus factories.

A group of scientists from the <a href="http://www.ucsb.edu/">University of California, Santa Barbara</a> found that this re-purposing of cells may go a lot farther, though.

In most cases, when a virus replicates enough copies, the cell ruptures and the copies are released to infect other cells. Sometimes, however, viruses can "bud" through the cell membrane, leaving cell structure intact. Scientists have theorized that in some of these cases, a virus could take control of the cell.

The researchers studies how viruses affect the bacteria Pseudomonas chlororaphis, which is used to protect against certain types of fungus in agriculture.

During infection, the virus created a special compartment within the cell. It broke down the bacteria’s DNA, then began rebuilding. That’s when it destroyed the cell's nucleus and assembled its own structure, similar to the nucleus in a plant or animal cell, the scientists said.

The new nucleus was radically different than anything that had been seen in bacteria before, the scientists said.

The research team spotted the new structure on a specialized microscope that allowed them to watch how the virus infected the bacteria as it happened. They used fluorescent markers on the viral proteins to keep track of them.

The study was the first to show that viruses can transform bacterial cells to look and act more like animal cells.

However, it supports a hypothesis with a name that’s a mouthful: “viral eukaryogenesis.” The idea is that complex, multi-cellular life grew out of interactions between ancient viruses and single-celled microbes like bacteria.

Scientists who support the hypothesis point to complex DNA viruses that infect single-celled organisms like amoebas. Ancient viruses that behaved in similar ways may have reprogrammed tiny microbes to behave more like plant and animal cells, according to the idea’s backers.

The study by the UC Santa Barbara researchers was published in the journal <a href="http://science.sciencemag.org/content/355/6321/194">Science</a>.

—

By Kyla Cathey / Earth.com staff writer

Did ancient viruses and bacteria spark complex life?

A new study offers an intriguing new possibility for the...

You may think you’ve been feeding puss perfectly with gourmet cat food twice a day – but scientists beg to differ and have outlined a new cat feeding schedule. The proper feeding schedule for your furry friend is actually closer to five bite-size meals a day, which more closely replicates how kitty dines in the wild.

Large meal sizes mean that our favorite pets are getting overweight and sluggish, and suffering from diseases like diabetes in their older years.

The new report suggests that:
<ul>
 	<li style="font-weight: 400;">Cats should be fed five times a day, which includes a night feed.</li>
 	<li style="font-weight: 400;">Dining on many small meals throughout the day stops cats from overeating.</li>
 	<li style="font-weight: 400;">Eating “little and often” replicates the way that cats naturally eat in the wild.</li>
</ul>
Chomping down on large-portioned meals means a cat overrides its inclination to stop eating when it feels full. As our feline companions are active after dark, scientists also suggest using timed feeders to assure cats get their energy after we go to bed. 

In addition to adopting the new cat feeding schedule the experts also suggested gamifying meal times to give the impression of a hunt. In the wild, cats can hunt for up to 12 hours a day. Without the stimulation of the hunt, cats become bored and frustrated, and engage in attention-seeking behaviours.

The scientists suggested creating “puzzle feeders” for the pets to help stimulate them mentally.

Puzzle feeders were the subject of a recent <a href="http://journals.sagepub.com/loi/jfm">Journal of Feline Medicine and Surgery</a> review. These nifty tools helped reduce feline stress, curbed weight loss, reduced aggressive behavior, and eliminated attention seeking. The same journal also advised to keep water bowls separate from food, as in the wild cats prefer to drink water far away from a food source. It is presumed that water near food is considered contaminated by the cats.

Feline behavior specialist Sarah Ellis said: “The way we feed our cats generally does not match the lifestyle they were designed for. Cats have undergone little in the way of selective breeding during the domestication process and therefore have an instinctive need to hunt. This modern lifestyle could be dangerous to pets, but by making a few simple changes to the way we feed them, we can help our cats to live longer, healthier and happier lives. The plan, based on scientific evidence, helps every cat owner mimic the conditions cats would usually contend with to get their food.”

This research and the subsequent cat feed plan was authored by Dr. Sarah Ellis and Dr. Lizzie Rowe for the charity <a href="http://www.icatcare.org/">International Cat Care</a>. You can read all their excellent tips for taking care of your nearest and dearest furry friend on their website. Follow this new cat feeding schedule and see your pussy prosper!

By Frances Levine/ Earth.com Editor-in-Chief

What's new pussycat? Science suggests new cat feeding schedule

You may think you’ve been feeding puss perfectly with gourmet...

A new<a href="http://www.greenpeace.org/international/en/"> Greenpeace</a> report finds that every single city in northern India has failed to meet international air quality standards. The study estimates that more than 1 million people die each year from India's air pollution. Poor air quality also takes 3% off the country’s gross domestic product (GDP).

While levels of the most dangerous airborne pollutants decreased by at least 15% in China, the U.S. and Europe from 2010 to 2015, the study finds that India’s air quality grew more toxic by 13% during that same period. 

According to data compiled for 2015 by state pollution control boards and under freedom of information laws, “there are virtually no places in India complying with<a href="http://www.who.int/en/"> World Health Organization</a> and national ambient air quality (NAAQ) standards, and most cities are critically polluted.”

“Except for a few places southern India which complied with NAAQ standards, the entire country is experiencing a public health crisis dude to high air pollution levels.”

Citing the Lancet’s <a href="http://thelancet.com/gbd">global burden of disease</a> study, the report finds that about 3,283 Indians die each day from exposure to outdoor air pollution, meaning deaths due to poor air quality amount to “only a fraction less than the number of deaths caused by tobacco usage.”

In the state of Uttar Pradesh, the level of PM10 (airborne pollutants like dust and mold) in all 20 cities observed were 100% higher than international limits. The report also found that the limit in Ghaziabad, an Uttar Pradesh city that borders the Indian capital Delhi, exceeded the limit by 400%.

Open fires, road dust, exhaust fumes from vehicles, industrial emissions, and the burning of crop residue are some of the primary factors contributing to India’s poor air quality. 

Delhi’s high court has taken action this week, prohibiting administrators in the northern agricultural state of Punjab to cease this year with their annual crop burning, which is responsible for sending huge clouds of smog across northern India. 

“We are of the view that the air quality of Delhi and nearby states is already deteriorating day by day and has attained alarming proportions,” the court said Thursday.

India's air pollution leads to public health crisis

A new Greenpeace report finds that every single city in...

This week, the <a href="https://www.epa.gov/">U.S. Environmental Protection Agency</a> (EPA) accused Fiat Chrysler Automobiles of violating the Clean Air Act by refusing to disclose that a number of their vehicles came equipped with software that increases nitrogen oxide emissions. 

The Clean Air Act requires car manufacturers to pass federal emissions tests in an effort to regulate air pollution. Included in the legislation is a mandate requiring automakers to disclose any engine software that can alter vehicle emission levels. Companies that fail to disclose such information are required to pay a steep fine. 

According to the EPA, Fiat Chrysler Automobiles sold about 104,000 automobiles with 3.0 liter diesel engines that contained this software. The vehicles in question are Jeep Grand Cherokees and Dodge Ram 1500 trucks sold between 2014 and 2016.

“Failing to disclose software that affects emissions in a vehicle’s engine is a serious violation of the law, which can result in harmful pollution in the air we breathe,” said Cynthia Giles, Assistant Administrator for the EPA’s Office of Enforcement and Compliance Assurance. “We continue to investigate the nature and impact of these devices. All automakers must play by the same rules, and we will continue to hold companies accountable that gain an unfair and illegal competitive advantage.” 

But now, Fiat Chrysler is fighting back. The automaker has released a <a href="http://www.prnewswire.com/news-releases/fca-us-response-to-epa-300390245.html">counter-statement</a>, saying they are “disappointed” in the EPA for issuing the violation, and vow to work with the incoming Trump administration to resolve the matter “fairly.” 

“FCA US diesel engines are equipped with state-of-the-art emission control systems hardware, including selective catalytic reduction (SCR),” Fiat Chrysler said in the statement. “Every auto manufacturer must employ various strategies to control tailpipe emissions in order to balance EPA's regulatory requirements for low nitrogen oxide (NOx) emissions and requirements for engine durability and performance, safety and fuel efficiency. FCA US believes that its emission control systems meet the applicable requirements.”

Chrysler Fiat goes on to say that they have spent months responding to the EPA’s concern and explain its emissions control technology. The automaker claims to have proposed a number of solutions, including extensive engine software changes to further improve nitrogen oxide emission levels.

--

By Rory Arnold, Earth.com Staff Writer

EPA accuses Fiat Chrysler of violating Clean Air Act

This week, the U.S. Environmental Protection Agency (EPA) accused Fiat...

It’s an incredible Antarctic journey. A collection of 24-ton tractors, each carrying and towing still more tons of food, fuel, equipment, and more, sets out from the edge of Antarctica. 

Traveling through frigid temperatures, they trek inland hundreds of miles to deliver their supplies to scientists stationed at the Concordia Research Station.

The scientists and suppliers who undertake the journeys call them “raids,” and the most recent raid had a special driver.

Dr. Didier Schmitt works for the <a href="http://www.esa.int/ESA">European Space Agency</a>, and is also an author and columnist. He joined a raid that headed to Concordia on Christmas Day.

He wrote about the trip on the ESA’s <a href="http://blogs.esa.int/concordia/2017/01/09/traversing-the-antarctic-mad-max-style/">blog</a>, comparing it to the “Mad Max” movies. The space agency monitored the convoy’s progress with satellites.

“As the Astrolabe ship was stuck in the ice, large supply items could not be unloaded so we will be the smallest raid ever,” he wrote – though he was quick to point out that the 300-meter convoy would still be carrying 330 tons of supplies.

“No passengers are allowed. Every person is in charge of a vehicle. I only had a few hours for a test-drive the day before ... While Father Christmas delivers gifts with reindeers we do it with mammoth-tractors weighing 22 tonnes,” Schmitt wrote.

Though the trip was only 10 days long, that was plenty of time for the convoy to run into trouble. Even though it is summer in the Southern Hemisphere, the “raiders” faced snow storms.

To help prevent problems, drivers are selected with redundancy in mind. Everyone knows their job, as well as someone else’s. They also went through stringent medical testing.

“Like on the International Space Station,” Schmitt said.

The conditions only got tougher the closer they got to the research station.

“We are in the middle of nowhere with 24 hour sunlight and a sky that has very unusual features,” Schmitt wrote, four days into the 10-day incredible journey.

The European Space Agency occasionally sends staff members on the Antarctic “raids.” Each year, an ESA doctor joins the staff at Concordia to conduct experiments with the crew. The isolation and weather offer a sort of alien landscape right on Earth.

Research on the continent also supports Earth observation research, which is also done by satellite, the agency said. The extreme light conditions – 24-hour darkness in the winter, and 24-hour sunlight in the summer – allows ESA doctors to study how humans cope without natural day and night cycles.

-

By Kyla Cathey / Earth.com staff writer

Photo credit: ESA

Writer shares convoy's incredible Antarctic journey

It’s an incredible Antarctic journey. A collection of 24-ton tractors,...

It sounds like a science fiction plot. Using lasers, scientists brainwash an unwitting subject to stalk and kill its prey. But for these hapless zombie killer mice, it’s all too real.

A team of scientists from <a href="http://www.yale.edu/">Yale University</a> and the <a href="http://www5.usp.br/english/?lang=en">University of São Paulo</a> have been studying which parts of the brain control hunting behavior in vertebrates. Their goal was to figure out if the amygdala played a role in hunting behaviors.

To test their theory, they created aggressive zombie mice with a virus and some lasers.

They injected each mouse’s brain with a light-sensitive virus. Then, they watched until the virus spread that light-sensitivity to the amygdala. Using a thin optic fiber and a blue laser, they were able to turn hunting-focused neurons on and off at will.

This turned the mice into hunting machines.

Using the laser, the scientists could “program” the mouse to chase down prey like grasshoppers and to attack. In other words, they could turn timid mice that were normally the targets of predators into bold hunters themselves, the researchers said.

When the laser was turned off, the mice behaved normally. When it was turned on, they ran around looking for targets, attacking everything from grasshoppers to bottle caps.

However, the scientists’ brain control was not complete. Unlike fictional human zombies, the zombie mice did not attack or eat their own kind. They also were much less aggressive if they weren’t hungry, the scientists said.

That speaks to hunting behaviors being food-driven and not violence-focused, at least in mice.

The researchers also found that if they created lesions on the neurons in the amygdala associated with the biting and killing reflexes, mice would still chase their prey, but they would not kill it.

The research is still in its infancy, but isolating the neurons that control hunting and food-driven behaviors in mice could offer clues to how hunting behaviors evolved in other mammals. It could even offer clues into why some humans struggle with overeating, the researchers said.

However, that would require a lot more study, they said.

The study was published in the journal <a href="http://www.cell.com/cell/abstract/S0092-8674(16)31743-3">Cell</a>. 

By Kyla Cathey / Earth.com staff writer

Image credit: Ivan de Araujo

Scientists create food-driven killer mice

It sounds like a science fiction plot. Using lasers, scientists...

Everyone can relax. We finally know where the Hyolith sea creature belongs on the tree of life.  
The first fossil of the ocean floor dwelling creature was discovered 175 years ago.  The mysterious animal, with its cone-shaped shell, tentacles, and appendages for walking, has eluded scientific classification until now.
Scientists say the Hyolith belongs to an invertebrate group that includes the horseshoe worm.
“Hyoliths are small cone-shaped sea dwelling animals. They are known from all around the world, mostly from fossils of their shells, “ Joseph Moysiuk of<a href="https://www.utoronto.ca/"> University of Toronto</a> told<a href="http://www.bbc.com/news"> BBC News</a>.
Moysiuk analyzed more than 1,500 specimens excavated from rocks found in Canada and the U.S. to reach this conclusion about the animal’s classification.
“They appear in the fossil record about 530 million years ago and survived until about 250 million years ago.”
“But the question of where Hyoliths actually fit into the tree of life has been somewhat of a mystery for the last 175 years, since they were first described.”
Hyoliths had long been assumed to be related to today’s common mollusks – like squid, octopus, clams, and snails. However, the new research published in the journal <a href="http://www.nature.com/nature/index.html">Nature</a> suggests that they are more closely related to another group of organisms known as lophophorata, which also include lamp shells (brachipods).
Researchers involved in the study analyzed soft tissue preserved in fossils from a site called Burgess Shale in Canada.
“Being able to place them on the tree of life, it solves this long paleontological mystery about what these creatures are,” said Moysiuk.
He adds, “We have been able to discover some new features of a very old group of fossil animals, and it’s allowed us to reveal the evolutionary history of this group of animals and where exactly they sit on the tree of life.”
Dr. Martin Smith of the <a href="https://www.dur.ac.uk/">University of Durham, UK</a>, also analyzed the fossils. He believes that understanding how the ancient creatures lived can offer insight into the impact of mass extinction events.
The Hyolith, which lived during the Cambrian period nearly 540 million years ago, was wiped out (along with most animal life) during the Permian-Triassic mass extinction, 252 million years ago.
“Understanding the effects of such mass extinctions on ecology and diversity is particularly important as we seek to appraise and mitigate the implications of the current mass extinction event brought about by human activity,” said Dr. Smith.

Ancient Hyolith sea creature joins the tree of life

Everyone can relax. We finally know where the Hyolith sea...

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



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



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



Video/ Image Credit: ESA



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

Nushagak Bay in southwest Alaska

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



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



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



Video/ Image Credit: American Chemical Society&nbsp;



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



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

Flu viruses are more flexible than expected

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

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



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



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



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



Video/Image Credit: ESA&nbsp;



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

Lake Trasimeno in Central Italy

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



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



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



Video Credit: American Chemical Society&nbsp;



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



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

Detecting mercury contamination with the tap of a finger

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

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



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



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



Video Credit: ACS Reactions



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



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

How does salt makes things taste better?

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

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Santiago, the capital city of Chile. The city is located in the center of the Santiago Metropolitan Region, which has a population of about eight million people.&nbsp;



'The weather of Santiago resembles the Mediterranean climate with dry and warm summers with temperatures reaching up to 35°C (from October to March) and cool and humid winters that can drop to 0°C (from April to September)."



"The city lies in the centre of the country’s central valley around 80 km from the Pacific Ocean to the west and borders Argentina to the east. A tiny part of Argentina is visible in the top-right corner of the image where the mountain crest of the Andes Mountains acts as a divider between the two countries," says ESA.



Video/ Image Credit: ESA



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



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

Santiago, Chile in South America

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

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

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Astronomers at <a href="https://www.jhu.edu/">Johns Hopkins University</a> have created an interactive map of the universe, including the actual position and real colors of 200,000 galaxies. The map allows the public to access data that was previously only available to scientists.



The map was developed using data collected by the Sloan Digital Sky Survey. For over two decades, a telescope in New Mexico was aimed at slightly different locations to capture the night sky.&nbsp;



"Growing up I was very inspired by astronomy pictures, stars, nebulae and galaxies, and now it's our time to create a new type of picture to inspire people," said map creator Brice Ménard, a professor at Johns Hopkins. "Astrophysicists around the world have been analyzing this data for years, leading to thousands of scientific papers and discoveries. But nobody took the time to create a map that is beautiful, scientifically accurate, and accessible to people who are not scientists. Our goal here is to show everybody what the universe really looks like."



"In this map, we are just a speck at the very bottom, just one pixel. And when I say we, I mean our galaxy, the Milky Way which has billions of stars and planets. We are used to seeing astronomical pictures showing one galaxy here, one galaxy there or perhaps a group of galaxies. But what this map shows is a very, very different scale."



"From this speck at the bottom, we are able to map out galaxies across the entire universe, and that says something about the power of science."



The <a href="https://mapoftheuniverse.net/">interactive map</a> is available online, where it can be downloaded for free.



Video Credit: Johns Hopkins&nbsp;



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



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

Interactive map of the universe includes 200,000 galaxies

[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"] Astronomers at Johns Hopkins University have created...

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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

Lesotho: Africa's "Kingdom in the Sky"

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Dublin, the capital and largest city of Ireland. Beyond its pub culture, Dublin is known as a modern culinary destination and a UNESCO City of Literature.



"Dublin is located near the midpoint of Ireland’s east coast in the province of Leinster. The city, which covers an area of around 115 square kilometers, is bordered by the Dublin Mountains, a low mountain range to the south, and is surrounded by flat farmland to the north and west," says ESA.



"The city straddles the River Liffey, which rises in the Wicklow Mountains and flows around 80 kilometers eastwards through the city of Dublin, in which it is canalised and bordered with quays. It then empties into Dublin Bay, an arm of the Irish Sea."



Dublin has an abundance of green spaces, including one of the largest enclosed public parks in any European capital city. Phoenix Park, which was originally formed as a royal hunting park in the 1660s, includes 707 hectares of green space.



Video Credit: ESA&nbsp;



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



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

The city of Dublin on Ireland's east coast

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Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the province of Zaragoza in northeast Spain. The image was captured by the Copernicus Sentinel-2 mission.



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



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



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



Video/ Image Credit: ESA



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



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

The province of Zaragoza in northeast Spain

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



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



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



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



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



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



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



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



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



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



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

The rapid retreat of the Columbia Glacier

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the Pyrenees Mountains, which form a natural boundary between France and Spain in southwest Europe.



The mountain range is 430 kilometers in length. It stretches from the Mediterranean Sea on the east to the Atlantic Ocean on the west.



At an elevation of 3404 meters, Pico de Aneto is the highest mountain peak in the Pyrenees, and the third-highest peak in Spain. Pico de Aneto is located in the Posets-Maladeta Natural Park, which spans more than 82,000 acres.&nbsp;



"Geological studies have revealed that the Pyrenees Mountains have been around for longer than the Alps, with their sediments first deposited in coastal basins during the Paleozoic and Mesozoic eras," reports ESA.



"The entire mountain range formed due to the upwelling of large sedimentary rocks by the collision of the Iberian and the Eurasian plate around 100 to 150 million years ago, followed by intense erosion from ice and water."



The western Pyrenees receive more precipitation due to moisture blowing in from the Atlantic Ocean. The mountain range contains many lakes, several small glaciers, and some of the highest waterfalls in Europe.



Video &amp; Image Credit: ESA



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



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

The Pyrenees Mountains in southwest Europe

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



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



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



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



Video Credit: NASA Goddard



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



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



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

Two distant planets may be "water worlds"

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

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

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



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



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



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



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



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



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



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

Tiger sharks are shifting poleward as temperatures rise

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

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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



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.

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 a new map of Mars that is providing insight into the planet’s watery past. The map also reveals where future missions could safely land on Mars.&nbsp;



The map has been created over the last decade using observations of water-rich rocks and mineral deposits. The images were captured by ESA’s Mars Express and NASA’s Mars Reconnaissance Orbiter.



"A big surprise is the prevalence of these minerals, with the map revealing hundreds of thousands of water-affected locations in the oldest parts of the planet," says ESA. "The new data will help answer exciting questions about Mars’ climate history, whether water was globally persistent or confined to short, intense episodes, and whether the conditions were ever suitable for life."



"Specifically, the map shows the locations and abundances of aqueous minerals. These are from rocks that have been chemically altered by the action of water in the past, and have typically been transformed into clays and salts."



According to John Carter of the Institut d’Astrophysique Spatiale (IAS), our collective understanding of Mars has been oversimplified. He explained that planetary scientists have tended to think that only a few types of clay minerals on Mars were created during its wet period, then as the water gradually dried up, salts were produced across the planet.



The new map shows that the composition of Mars is much more complicated than what we thought. For example, while many salts formed after Martian clays, there are some salts that are presumed to be older than some of the clays.&nbsp;



“The evolution from lots of water to no water is not as clear cut as we thought, the water didn’t just stop overnight. We see a huge diversity of geological contexts, so that no one process or simple timeline can explain the evolution of the mineralogy of Mars. That’s the first result of our study. The second is that if you exclude life processes on Earth, Mars exhibits a diversity of mineralogy in geological settings just as Earth does,” said Carter.



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.

The history of Mars is much more complex than we thought

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Today's Video of the Day from the <a href="https://www.stowers.org/">Stowers Institute for Medical Research</a> describes how cavefish adapted to a sedentary lifestyle over tens of thousands of years. 



The experts found that the muscle metabolism of cavefish has been genetically reprogrammed over time. As a result, the animals have experienced major changes in their morphology and behavior. Despite these changes, however, the cavefish remain healthy and fit.



The research may provide new clues about the evolutionary consequences of prolonged physical inactivity in humans.&nbsp;



“It’s no surprise that people are moving less and less as technology has advanced,” said Rohner. “With cavefish, we have a unique system where we can study what might happen if people remained couch potatoes over very, very long periods of time.”



Video Credit: Stowers Institute for Medical Research



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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.

Cavefish are healthy despite their sedentary lifestyle

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> some of the most incredible waves in the world, as seen by Landsat satellites.



"With more than 370,000 miles of coastline on Earth, there are plenty of places where epic waves build up, curl over, and hurtle toward the shore.- much to the thrill of surfers," says NASA. "There are some places where these waves are so magnificent that they can be seen from space."



"With the broad perspective of satellites, we can see how these iconic waves develop into the world’s tallest, longest, fastest, and heaviest."



Video Credit: NASA Earth Observatory&nbsp;



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



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

Satellites capture the world's biggest and fastest waves

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes why satellite images and measurements of our planet have become "essential to our survival, offering a new outlook of our world."&nbsp;



Rising sea levels pose one of the biggest societal threats associated with climate change. According to ESA, satellite altimeter missions such as Copernicus Sentinel-6 are essential in monitoring global and regional changes in sea level.



"Unbeknown to many, the island of Crete, Greece, plays an important role in the Copernicus satellite altimetry constellation and on an international stage," reports ESA.



"Satellite altimetry data have to be continuously monitored at the ESA’s Permanent Facility for Altimetry Calibration where different techniques have pioneered the use of transponders to provide the best measurements to validate satellite altimeters in space soon after launch."



Dr. Craig Donlon explains that, by understanding planet Earth through satellite measurements, we are able to find evidence of change.&nbsp;



Video Credit: European Space Agency&nbsp;



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

Satellites have become essential to our survival

[sendtonews key="761m2QQvR1-2035772-12187" type="single"] Today’s Video of the Day from the...