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.



Since Tuesday, the moon has looked larger than usual, and it’ll keep that appearance through Friday. By Thursday morning, as people head out for their morning commute. Depending on the weather in your area, Thursday night being the best time to see the full Hunter's supermoon..



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.



The Hunter’s Moon is generally in October -- although once every four years it makes an appearance in November.



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 tonight

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. Since Tuesday, the...

Oklahoma 4.5 magnitude earthquake was reported today.

A series of seismic events which culminated in an Oklahoma 4.5 magnitude earthquake early this morning have shaken the state, a new United States Geological Survey reported.

On September 3rd, the shale-rich state saw a magnitude-5.6 quake whose epicenter was 8 miles southeast of Pawnee, Oklahoma.

A USGS study stated that the disposal of oil- and gas-related wastewater is the primary reason these events have taken place.

As a response to the Sept. 3 earthquake, the Oklahoma Corporation Commission's Oil and Gas Division claimed it was doubling its “area of concern.” Working with the Environmental Protection Agency, the state government ordered the closure of 32 wells.

The wastewater injected into the ground near Pawnee poses a huge potential danger for more earthquakes in the region. A mandatory special order ruled that wastewater injections cannot exceed 40,000 barrels per day after reviewing data from the Oklahoma Geological Survey and the USGS.

Oklahoma Governor Mary Fallin issued a declaration of a state of emergency for Pawnee County following the September quake.

Oklahoma is one of the largest crude oil producers in the United States, making a whopping 4 percent of the nation's supplies. It hosts some of the largest deposits of shale oil in the country, with the trade epicenter in Cushing acting as the largest of its kind in North America.

Oklahoma 4.5 magnitude earthquake due to oil wastewater

Oklahoma 4.5 magnitude earthquake was reported today. A series of...

A new UNICEF air pollution report claims almost 2 billion children are affected by air quality issues around the world.

Shocking news came from UNICEF today as they report recent statistics indicating almost 2 billion children in the world are breathing polluted air. These air pollution levels exceed international guidelines and are the result of fossil fuel use, vehicle emissions, dust and burning. Almost 1 in 7 of the children at risk live in areas with the most toxic air, at a whopping six or more times higher than guidelines recommend. These dangerous levels of pollution increase bronchial illnesses such as asthma, stroke, and lung cancer. Sadly, children are the most susceptible to the effects of these pollutants.

Using satellite imagery, the UNICEF air pollution report shocked the world today by showing how many children are exposed to pollution exceeding guidelines set out by the World Health Organization (WHO). The biggest offenders are South Asia, East Asia, and the Pacific region. It is claimed that 620 million children are breathing in polluted air in South Asia.

“Air pollution is a major contributing factor in the deaths of around 600,000 children under five every year – and it threatens the lives and futures of millions more every day. Pollutants don’t only harm children’s developing lungs – they can actually cross the blood-brain barrier and permanently damage their developing brains – and, thus, their futures. No society can afford to ignore air pollution. We protect our children when we protect the quality of our air. Both are central to our future,” UNICEF Executive Director Anthony Lake commented.

As children’s bodies are still developing, they are more vulnerable to these positions. Juveniles breath faster than adults and inhale more air – toxic particles drill deep into their lungs and circulatory system, which can develop into disease.

“Air pollution is a major contributing factor in the deaths of around 600,000 children under five every years – and it threatens the lives and futures of millions more every day,” Dr. Lake added.

Experts say the poorest people are the most defenseless to these risks, as they already suffer from poor health. In New Delhi, India, air pollution is thought to be amongst the worst in the world, spiking each winter as residents use garbage fires to stay warm. This morning, New Dehli was reported at PM 2.5 levels above 900 mcg per cubic meter – 90 times higher than the WHO recommendation – and it was recommended for residents to stay indoors.

UNICEF wants world leaders to take four steps towards a cleaner air for our world:
<ol>
 	<li style="font-weight: 400;">Reduce fossil fuel consumption and move towards renewable energy.</li>
 	<li style="font-weight: 400;">Expand children’s access to health care, including health education.</li>
 	<li style="font-weight: 400;">Reduce children’s exposure to toxic air pollutants by building schools far away from pollution-causing industry and using clean energy in homes.</li>
 	<li style="font-weight: 400;">Improve the monitoring of air pollution.</li>
</ol>
In New Dehli, local surveys reveal that up to a third of children suffers with respiratory ailments. New Delhi has taken steps to clean its air by creating restrictions on the type of vehicles which can drive on its busy city streets. However, large-scale construction creating dust and other pollution still continues.

The city recently launched a smartphone app called <a href="http://changetheair.org/" target="_blank" rel="noopener">Change the Air</a>, which asks residents to contribute photos and complaints pertaining to illegal pollution sources, from the burning of leaves and garbage in public parks to construction crews working without dust control measures.

The UNICEF air pollution report comes after research last month found more than 90 percent of the UK’s population are living in areas where air pollution exceeds safe limits.

—

You can read the full report over at <a href="http://www.unicef.org/media/media_92979.html" target="_blank" rel="noopener">UNICEF</a>.

UNICEF air pollution report: 2 billion children affected

A new UNICEF air pollution report claims almost 2 billion...

NASA pumpkin carving contest shows that NASA engineers are good at most things. Earlier today their pumpkin carving contest went viral. See why<a href="https://www.flickr.com/photos/nasa-jpl/sets/72157672207667603/with/30490806042/"> here.</a>

Happy Halloween from Earth.com.

NASA pumpkin carving contest puts us all to shame

NASA pumpkin carving contest shows that NASA engineers are good...

Earth news review: Earth-related stories from other parts of the web this week

Crustaceans in the scariest part of the ocean wear bacteria as camouflage to hide from predators – read the full article on <a href="http://www.dailymail.co.uk/sciencetech/article-3878602/Crustaceans-ocean-s-twilight-zone-wear-CAMOUFLAGED-Bacteria-coating-helps-creatures-avoid-predator-s-gaze.html">Daily Mail</a>.

Latest Global Warming prediction: Southern Spain to turn into a desert – read the full article at <a href="http://hosted.ap.org/dynamic/stories/E/EU_GLOBAL_WARMING_MEDITERRANEAN?SITE=AP&amp;SECTION=HOME&amp;TEMPLATE=DEFAULT&amp;CTIME=2016-10-27-15-16-57">The Associated Press</a>.

Sea in Antarctica to become the world’s largest protected zone – read the full story over at the <a href="http://www.bbc.com/news/science-environment-37789594">BBC</a>.

The War On Salmon: More Pacific Coast Hatchery Salmon to be added to the Endangered Species List – full article at <a href="http://hosted.ap.org/dynamic/stories/U/US_LISTED_SALMON_HATCHERIES?SITE=AP&amp;SECTION=HOME&amp;TEMPLATE=DEFAULT">The Associated Press</a>.

Scandal: Gene study shows ancient interbreeding between chimpanzees and bonobos – read the full article on <a href="https://www.eurekalert.org/pub_releases/2016-10/wtsi-gsr102116.php">EurekAlert!</a>

80,000 acres off the New York coast cleared for wind energy – read the full article on <a href="http://www.upi.com/New-York-set-for-offshore-wind-after-environmental-review/9101477650265/?nll=1">UPI</a>.

141 Arrested in North Dakota Pipeline protest following tense police standoff – read more at <a href="http://www.reuters.com/article/us-usa-pipeline-regulations-idUSKCN12R2GI">Reuters</a>.

Awesome Video: Monkeys make their own tools from stone – watch over at Nature Video <a href="https://youtu.be/j0jqJUF1nOs">YouTube</a>.

Caitlyn Clownfish: How clownfish can actually change sex for survival – read the full article on <a href="http://blogs.nature.com/houseofwisdom/2016/10/how-changing-sex-helps-nemo-survive-and-adapt.html">houseofwisdom</a>.

Hundreds of blackbirds organize flash mob in Walmart parking lot – just in time for Halloween, read more at <a href="http://www.upi.com/Odd_News/2016/10/28/Hundreds-of-blackbirds-descend-on-Texas-Walmart-parking-lot/5221477660825/?nll=1">UPI</a>.

Mosquitos armed with bacteria released in South America to combat Zika – read the full article on <a href="http://www.nature.com/news/rio-fights-zika-with-biggest-release-yet-of-bacteria-infected-mosquitoes-1.20878?WT.ec_id=NEWS-20161027&amp;spMailingID=52628621&amp;spUserID=MjI5MDcwMTc5OTg1S0&amp;spJobID=1025167321&amp;spReportId=MTAyNTE2NzMyMQS2">Nature.com</a>.

Goopy Mummies: Climate Change turning ancient Chilean mummies into black slime – get the full picture at the <a href="http://www.dailymail.co.uk/sciencetech/article-3879760/Chile-seeks-help-protect-worlds-oldest-mummies.html">Daily Mail</a>.

NASA’s Operation IceBridge to study changing polar landscape – read more at <a href="https://blogs.nasa.gov/earthexpeditions/2016/10/18/nasa-icebridge-fit-to-fly/">NASA</a>.

White House holds summit for experts studying arctic changes – read the full article at <a href="http://earthobservatory.nasa.gov/IOTD/view.php?id=88989&amp;src=iotdrss">NASA</a>.

The real story behind “Fall” vs “Autumn” – join the debate at <a href="http://www.slate.com/blogs/browbeat/2012/09/29/why_does_autumn_have_two_names_how_the_third_season_became_both_autumn_and_fall_.html?nl=morning-briefing&amp;em_pos=large&amp;emc=edit_nn_20161028">Slate</a>.

Earth news review

Earth news review: Earth-related stories from other parts of the...

Hurricane Seymour fading fast as a new image is caught.

NOAA's satellite captured an image of the post-tropical cyclone Hurricane Seymour which is fading fast in the Eastern Pacific. Seymour is expected to dissipate in a day as it moves through hostile environmental conditions.

The National Hurricane Center (NHC) issued their final advisory on the storm at 5 am EDT when they noted that Seymour had become post-tropical.

Seymour's remnants had no organized thunderstorm development when the images were captured. The storm resembled a wedge of clouds. 

National Hurricane Center (NHC) forecaster Richard Pasch said "The cyclone has lacked organized deep convection within 60-100 nautical miles of its center for over 12 hours, and no longer qualifies as a tropical cyclone. Since Seymour has become a post-tropical remnant low, advisories are being discontinued."

At 5 a.m. EDT, the center of Post-Tropical Cyclone Seymour was located near 22.4 degrees north latitude and 122.8 degrees west longitude. That's about 820 miles west of the southern tip of Baja California, Mexico. The post-tropical cyclone was moving toward the north near 8 mph. NHC said a north-northeastward motion is expected to begin later today and continue into Saturday, Oct. 29. Maximum sustained winds have decreased to near 35 mph with higher gusts.

The NHC said the low-pressure area will move through "an extremely hostile environment of strong southwesterly wind shear of 40-45 knots and sea surface temperatures cooler than 73.4 degrees Fahrenheit during the next couple of days. Strong vertical wind shear can tear a storm apart, while sea surface temperatures cooler than 80 degrees Fahrenheit are too cold to maintain a tropical cyclone. These environmental factors should cause the remnant low to dissipate in a couple of days.

The image was created by the NASA/NOAA GOES Project at NASA's Goddard Space Flight Center, Greenbelt, Maryland. Source, <a href="https://www.nasa.gov/feature/goddard/2016/seymour-eastern-pacific">NASA</a>.

Hurricane Seymour fading fast

Hurricane Seymour fading fast as a new image is caught....

Winter scene in Northern Idaho

Extreme cold winters may be caused by climate change.
<ul class="ul1">
 	<li class="li1">Scientists agree that climate change may be intensifying the effects of the jet stream, causing extreme cold weather in the UK and US</li>
 	<li class="li1">Study could improve long-term forecasting of winter weather in most populous parts of the world</li>
 	<li class="li1">More accurate forecasting could help communities, businesses and economies prepare for severe weather and make life and cost-saving decisions</li>
</ul>
Read more conclusions from the University of Sheffield study <a href="http://www.sheffield.ac.uk/news/nr/climate-change-cold-winters-uk-us-weather-study-1.657530" target="_blank">here.</a>

Climate change may be responsible for extreme cold winters

Extreme cold winters may be caused by climate change. Scientists...

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First look at damage caused by central Italy earthquake. Central Italy earthquake created chaos yesterday. 
Two powerful earthquakes have caused further damage to central Italian towns in Macerata. Thankfully there are few reports of serious injuries, the death toll for the August quakes in the same region reached 300.Italy, officially the Italian Republic, is a country consisting of a peninsula delimited by the Alps and several islands surrounding it. Italy is located in Southern Europe, and is also considered part of Western Europe. A unitary parliamentary <a href="https://www.earth.com/video/the-republic-of-maldives-in-the-indian-ocean/">republic</a> with Rome as its capital, the country covers a total area of 301,340 km² and shares land borders with France, Switzerland, Austria, Slovenia, and the enclaved microstates of Vatican City and San Marino. Italy has a territorial enclave in Switzerland and a maritime exclave in Tunisian waters. With around 60 million inhabitants, Italy is the third-most populous member state of the European Union.
Due to its central geographic location in Southern Europe and the Mediterranean, Italy has historically been home to myriad peoples and cultures. In addition to the various ancient peoples dispersed throughout what is now modern-day Italy, the most predominant being the Indo-European <a title="Italic peoples" href="https://en.wikipedia.org/wiki/Italic_peoples">Italic peoples</a> who gave the peninsula its name, beginning from the <a title="Classical antiquity" href="https://en.wikipedia.org/wiki/Classical_antiquity">classical</a> era, <a title="Phoenicia" href="https://en.wikipedia.org/wiki/Phoenicia">Phoenicians</a> and Carthaginians founded colonies mostly in <a title="Insular Italy" href="https://en.wikipedia.org/wiki/Insular_Italy">insular Italy</a>,<a href="https://en.wikipedia.org/wiki/Italy#cite_note-WaldmanMason2006-21">[21]</a> <a title="Ancient Greece" href="https://en.wikipedia.org/wiki/Ancient_Greece">Greeks</a> established settlements in the so-called Magna Grae<a title="Magna Graecia" href="https://en.wikipedia.org/wiki/Magna_Graecia">cia</a> of <a title="Southern Italy" href="https://en.wikipedia.org/wiki/Southern_Italy">Southern Italy</a>, while <a title="Etruscan civilization" href="https://en.wikipedia.org/wiki/Etruscan_civilization">Etruscans</a> and <a title="Celts" href="https://en.wikipedia.org/wiki/Celts">Celts</a> inhabited <a title="Central Italy" href="https://en.wikipedia.org/wiki/Central_Italy">central</a> and <a title="Northern Italy" href="https://en.wikipedia.org/wiki/Northern_Italy">northern</a> Italy respectively. An Italic tribe known as the <a title="Latins (Italic tribe)" href="https://en.wikipedia.org/wiki/Latins_(Italic_tribe)">Latins</a> formed the <a title="Roman Kingdom" href="https://en.wikipedia.org/wiki/Roman_Kingdom">Roman Kingdom</a> in the 8th century BC, which eventually became a <a title="Roman Republic" href="https://en.wikipedia.org/wiki/Roman_Republic">republic</a> with a government of the Senate and the People. The <a title="Roman Republic" href="https://en.wikipedia.org/wiki/Roman_Republic">Roman Republic</a> initially conquered and assimilated its neighbours on the Italian peninsula, eventually expanding and conquering parts
Image Credit: Tiziana Fabi, <a href="http://www.gettyimages.com/">Getty Images</a>
See the full photo report <a href="http://www.gettyimages.com/search/events/678709773?sort=best&amp;excludenudity=true&amp;phrase=&amp;family=editorial#license">here </a>

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First look at damage caused by central Italy earthquake

&nbsp; First look at damage caused by central Italy earthquake....

A 16-million-year-old parrot fossil was found in Siberia.
A recent archaeological discovery suggests that parrots once may have lived in Siberia. The presence of the parrot bone fragments suggests that tropical birds were at one time widespread in Eurasia.
Discovered by researchers from the Russian Academy of Sciences in Moscow, this fossil once belonged to a bird who lived over 16 million years ago. Today it’s more common to find parrots in tropical, sub-tropical and temperate regions.
Dr. Nikita Zelenev, who released his findings in Biology Letters, states: “The presence of parrots as far north as Siberia supports their broad geographical distribution in Asia . . . and may have implications for the historical biogeography of Psittacoidea.”
—
Read the full article <a href="http://rsbl.royalsocietypublishing.org/content/12/10/20160717">here</a>.

16-million-year-old parrot fossil found in Siberia

A 16-million-year-old parrot fossil was found in Siberia. A recent...

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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

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

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



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



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



Video/ Image Credit: American Chemical Society&nbsp;



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



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

Flu viruses are more flexible than expected

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

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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



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Detecting mercury contamination with the tap of a finger

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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



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How does salt makes things taste better?

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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



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Santiago, Chile in South America

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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



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Interactive map of the universe includes 200,000 galaxies

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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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



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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



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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



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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



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The Pyrenees Mountains in southwest Europe

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Earth,Like,Exoplanet,3d,Render

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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



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Two distant planets may be "water worlds"

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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Satellites reveal how Earth's systems are interconnected

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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 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



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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



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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



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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...