Today&#8217;s Image of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> features the aftermath of wildfires that burned across central and southern Chile in early February 2023.



&#8220;The blazes killed dozens, injured thousands, and left many people homeless. The smoke that previously poured over the Pacific Ocean has since lessened, but the scars on the landscape remain,&#8221; says NASA.



&#8220;Though fire numbers decreased by February 13, some activity continued in the Biobío, Ñuble, Araucanía, and Maule regions, and a state of emergency declared by the Chilean government on February 3 remained in place. Favorable fire conditions persisted amid low humidity, high temperatures, and winds.&#8221;



The false color image was captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite.



Image Credit: NASA Earth Observatory&nbsp;



&#8211;&#8212;



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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Chile's burn scars are visible from space

Today's Image of the Day from the European Space Agency features the star-forming region NGC 604, which is located 2.73 million light-years away from Earth in the Triangulum Galaxy (M33). The image was captured by the James Webb Space Telescope.



By studying regions like NGC 604, astronomers can gain insights into the complex interactions between stars and the interstellar medium, as well as the conditions that lead to the birth of stars. This, in turn, helps in understanding the evolution of <a href="https://www.earth.com/news/galaxies-like-our-own-milky-way-are-not-unique/" target="_blank" rel="noreferrer noopener">galaxies</a> and the universe as a whole.



<h2 class="wp-block-heading" id="h-massive-stars-of-ngc-604">Massive stars of NGC 604</h2>



"Sheltered among NGC 604’s dusty envelopes of gas are more than 200 of the hottest, most massive kinds of stars, all in the early stages of their lives," said <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



"These types of stars are known as B-types and O-types, the latter of which can be more than 100 times the mass of our own Sun. It’s quite rare to find this concentration of them in the nearby universe. In fact, there’s no similar region within our own Milky Way galaxy."



According to ESA, this concentration of massive stars, combined with its relatively close distance, means NGC 604 gives astronomers an opportunity to study these objects at a fascinating time early in their life.



<h2 class="wp-block-heading" id="h-gigantic-region-of-ionized-hydrogen">Gigantic region of ionized hydrogen</h2>



NGC 604 is one of the largest known regions of ionized hydrogen, also known as an H II region. This nebula is significantly larger than the Orion Nebula, which is one of the most well-known H II regions in our own <a href="https://www.earth.com/news/large-amount-of-dark-matter-may-be-missing-from-the-milky-way/" target="_blank" rel="noreferrer noopener">Milky Way galaxy</a>.&nbsp;



NGC 604 spans about 1,500 light-years across, making it one of the largest H II regions in the Local Group of galaxies. This group includes the Milky Way, the Andromeda Galaxy, and about 54 other smaller galaxies. 



<h2 class="wp-block-heading" id="h-ngc-604-starburst-phenomenon">NGC 604 starburst phenomenon </h2>



Within NGC 604, there are hundreds of young, hot, massive <a href="https://www.earth.com/news/stars-at-the-edge-of-our-milky-way-galaxy-travel-more-slowly/" target="_blank" rel="noreferrer noopener">stars</a>. These stars have ionized the surrounding gas, causing it to glow and creating the nebula. The region is a prime example of a starburst phenomenon, where stars form at a much higher rate than in typical galactic conditions.



“The bright orange streaks in this image signify the presence of carbon-based molecules known as polycyclic aromatic hydrocarbons, or PAHs," explained ESA.



"As you travel further from the immediate cavities of dust where the star is forming, the deeper red signifies molecular hydrogen. This cooler gas is a prime environment for star formation. Ionized hydrogen from ultraviolet radiation appears as a white and blue ghostly glow."



<h2 class="wp-block-heading" id="h-more-about-star-formation">More about star formation </h2>



Star formation is crucial for the evolution of galaxies and the synthesis of heavy elements. In the cores of stars, elements heavier than helium are created.



The elements are spread throughout the <a href="https://www.earth.com/news/ancient-stars-shakti-shiva-shaped-milky-way-galaxy/" target="_blank" rel="noreferrer noopener">galaxy</a> when stars reach the end of their lives and expel their material - either gently through winds or violently via supernova explosions. This enriching process allows for the formation of new stars and planets, and ultimately, the potential for life.



<h3 class="wp-block-heading">Cloud collapse</h3>



The process begins when part of a molecular cloud becomes unstable and starts to collapse under its own gravity. This can be triggered by events like shock waves from nearby <a href="https://www.earth.com/news/supernova-explosions-could-damage-distant-planets/" target="_blank" rel="noreferrer noopener">supernovae</a>, galactic collisions, or the influence of other massive stars.



<h3 class="wp-block-heading">Formation of a protostar</h3>



As the cloud collapses, it fragments into smaller clumps. Each clump will eventually form one or more stars. 



The material within these clumps continues to fall inward, heating up as it does so, eventually forming a warm core called a protostar. At this stage, the protostar is not yet hot enough for nuclear fusion (the process that powers stars) to occur.



<h3 class="wp-block-heading">Accretion disk</h3>



Around the protostar, material from the surrounding cloud continues to fall inward, forming a rotating disk. This material slowly accretes onto the protostar, increasing its mass.



<h3 class="wp-block-heading">Nuclear fusion begins</h3>



Once the core of the protostar reaches a high enough temperature and pressure, hydrogen atoms begin to fuse into helium, releasing energy in the process. This marks the transition from a protostar to a main sequence star, like our sun.



<h3 class="wp-block-heading">Main sequence and beyond</h3>



The star will spend the majority of its life in the main sequence stage, where it balances the gravitational forces trying to collapse it and the outward pressure from nuclear fusion. 



Eventually, the star will exhaust its hydrogen fuel. Its subsequent evolution will depend on its initial mass, leading to various end stages such as red giants, supernovae, neutron stars, or black holes.



Image Credit: NASA/ESA/CSA James Webb Space Telescope



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Young, massive stars in the Triangulum Galaxy

Today's Image of the Day from the European Space Agency...

Today's Image of the Day from NASA Earth Observatory features the Messak Settafet, a rocky plateau located in the central Sahara Desert. It is part of the greater Messak Plateau, which stretches between the Erg Uan Kasa and the Murzuq Sand Sea.&nbsp;



The plateau's surface is characterized by blackened sandstone, sculpted by thousands of years of wind erosion. This dark patina, often referred to as "desert varnish," adds to its distinctive appearance. The region is starkly beautiful but harsh, with extreme temperatures and minimal <a href="https://www.earth.com/news/even-desert-plants-are-not-immune-to-climate-stress/" target="_blank" rel="noreferrer noopener">vegetation</a>.



<h2 class="wp-block-heading" id="h-image-of-the-messak-settafet">Image of the Messak Settafet</h2>



“Towering over the desert in southwestern Libya, the Messak Settafet plateau resembles the wall of a giant fortress, with its dark, erosion-resistant sandstone separating the Ubari Sand Sea to the north and the Marzūq Sand Sea to the south,” noted NASA.



“The large outcrop of Cretaceous rock features a sharp escarpment on its north side. The cliff, some 300 meters (1,000 feet) high in places, is lined with a thin dark shadow.”&nbsp;



“Dark debris from rockfalls is visible to the north. Note that an optical illusion called relief inversion can make high-elevation areas appear low and vice versa when shadows appear on the northern side of a feature.”



Archaeological significance of the plateau&nbsp;



Messak Settafet is often referred to as the "land of stone tools" because it is one of the world's largest sites for prehistoric tools.&nbsp;



The area is littered with countless <a href="https://search.app?link=https%3A%2F%2Fwww.earth.com%2Fnews%2Fstone-tool-discovery-challenges-entire-theory-of-human-evolution%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">stone tools</a> and artifacts dating back to various prehistoric periods, including the Acheulean and Neolithic. These tools offer insights into early human technology and adaptation to desert environments.



“Signs of ancient tool making cover much of the plateau’s surface,” said <a href="https://www.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>. “According to one archaeological survey, people discarded so many stone tools and rock fragments on the plateau over hundreds of thousands of years that roughly 75 artifacts per square meter now carpet the surface.” 



“That makes this one of the earliest known examples of hominins modifying an entire landscape, according to the University of Cambridge archaeologists who conducted the survey.”



“Other signs of ancient activity include the bright spots that dot the image. These areas were likely quarrying pits where people dug up rocks and crafted them into tools, the archaeologists reported.”&nbsp;



<h2 class="wp-block-heading" id="h-rock-art-on-the-plateau-nbsp">Rock art on the plateau&nbsp;</h2>



The plateau is home to numerous petroglyphs and <a href="https://www.earth.com/news/negev-petroglyphs-ancient-art-rock-carvings-face-erosion-fungi-lichens/" target="_blank" rel="noreferrer noopener">carvings</a>. These engravings depict animals, humans, and symbolic designs, providing valuable clues about the lives, beliefs, and environments of the region's ancient inhabitants. 



“For instance, Wadi Mathendous, a prehistoric archaeological site located in the southern part of the plateau, contains engravings of rhinoceroses, crocodiles, hippopotamuses, fighting cats, giraffes, long-horned buffaloes, and elephants. The art is thought to be about 8,000 years old,” said NASA.



Some of the animals depicted, such as giraffes and elephants, indicate that the Sahara was once a <a href="https://search.app?link=https%3A%2F%2Fwww.earth.com%2Fnews%2Fa-lush-green-sahara-desert-helped-early-humans-migrate-out-of-africa%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">much wetter</a> and more hospitable environment.



Cultural significance of the Messak Settafet



Messak Settafet forms part of the Rock-Art Sites of Tadrart Acacus, a UNESCO World Heritage Site since 1985. This designation highlights the area's importance for understanding early human culture and environmental changes in the Sahara.



The plateau has been a critical area for studying the migration and adaptation of early humans. Its archaeological richness offers a glimpse into how humans thrived in this region during periods when the climate was wetter.



“Although the plateau now receives less than 0.4 inches of rain annually, clues in the landscape make clear it was once much wetter,” noted NASA.



“Deeply incised dried stream valleys, or wadis, crisscross the plateau, indicating significant past water flow. The small, bright features scattered across the plateau are sand and silt deposits left where water once pooled.”



The Messak Settafet, like many remote <a href="https://www.earth.com/news/sahara-desert-dust-storms-carry-harmful-bacteria-and-fungi-around-the-globe/" target="_blank" rel="noreferrer noopener">desert</a> regions, faces challenges such as erosion, vandalism of ancient rock art, and the potential impacts of development. Efforts to preserve its archaeological treasures are vital for protecting its cultural and scientific significance.



The image was captured November 17, 2024 by the Operational Land Imager-2 (OLI-2) on Landsat 9 on&nbsp;



Image Credit: NASA Earth Observatory



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Messak Settafet plateau in the Sahara Desert

Today's Image of the Day from NASA Earth Observatory features...

Today's Image of the Day from the European Space Agency features the western part of Grand Bahama, the northernmost island in the Bahamas, captured by the Copernicus Sentinel-2 satellite system.&nbsp;



Grand Bahama is known for its beautiful beaches, clear turquoise waters, and vibrant tourism industry. The island is the fourth largest in the Bahamas and is one of the most popular tourist destinations in the region.



<h2 class="wp-block-heading" id="h-main-cities-of-grand-bahama-nbsp">Main cities of Grand Bahama&nbsp;</h2>



“Grand Bahama’s two main cities are both visible in the image: West End on the northwestern tip of the island and Freeport on the southern shore,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



“West End is the oldest city on the island, and the capital. The runway of West End airport, the smaller of the two airports serving Grand Bahama, can be spotted west of the city.”



Freeport serves as a hub for tourism, trade, and commerce. It was developed as a free trade zone in the 1950s, which has helped drive its growth.



<h2 class="wp-block-heading" id="h-geography-and-climate">Geography and climate</h2>



Grand Bahama is situated about 55 miles off the coast of Florida, making it one of the closest islands in the Bahamas to the United States.



The island has a tropical climate, with warm <a href="https://www.earth.com/news/global-temperatures-increase-scientists-plan-slow-down-rising-heat/" target="_blank" rel="noreferrer noopener">temperatures</a> year-round. It experiences a wet season from May to October and a dry season from November to April.



The rainy season is from May to October, with the wettest months being August and September. Thunderstorms are common during this period, and the island can experience heavy rainfall, especially during hurricane season.



The humidity level is consistently high due to the tropical location, often exceeding 70 percent. It peaks during the rainy season, making it feel <a href="https://www.earth.com/news/what-temperature-threshold-can-the-human-body-handle/" target="_blank" rel="noreferrer noopener">hotter</a> than the actual temperature.



<h2 class="wp-block-heading" id="h-hurricanes-on-grand-bahama">Hurricanes on Grand Bahama</h2>



<a href="https://www.earth.com/news/scientists-propose-adding-a-category-6-to-the-current-hurricane-intensity-scale/" target="_blank" rel="noreferrer noopener">Hurricanes</a> have left a lasting impact on the infrastructure, economy, and environment of Grand Bahama.&nbsp;



Recovery efforts from such destructive storms often take years, and the island's experience with hurricanes has highlighted the vulnerability of coastal communities in the face of increasingly severe weather events.



Dorian was one of the most devastating hurricanes to hit Grand Bahama. It was a Category 5 storm with maximum sustained winds of 185 miles per hour.&nbsp;



The hurricane caused catastrophic damage, including widespread flooding, destruction of homes and infrastructure, and loss of life. Dorian stalled over the island, leading to prolonged and intense damage.



<h2 class="wp-block-heading" id="h-tourism-nbsp-on-grand-bahama">Tourism&nbsp;on Grand Bahama</h2>



Grand Bahama is known for its stunning beaches, such as Lucaya Beach, Xanadu Beach, and Taino Beach. The island offers various water activities, including snorkeling, scuba diving, and boating.



The Lucayan National Park is a popular natural attraction, featuring one of the world's longest underwater cave systems, as well as beautiful <a href="https://www.earth.com/news/mangroves-and-saltmarshes-are-much-better-at-storing-carbon-than-previously-believed/" target="_blank" rel="noreferrer noopener">mangroves</a> and wetlands.



Port Lucaya Marketplace is a vibrant area with shops, restaurants, and entertainment, often considered the heart of Grand Bahama’s tourist activity.



Grand Bahama has been working on revitalizing its tourism industry, especially after facing challenges like hurricanes and the Covid-19 pandemic. Efforts include upgrading infrastructure, improving facilities, and promoting sustainable tourism practices. 



The island offers various <a href="https://www.earth.com/news/travelers-are-ready-for-more-affordable-eco-friendly-options/" target="_blank" rel="noreferrer noopener">eco-tourism</a> activities, including kayaking through mangroves, bird watching, and exploring its unique ecosystems, which attract visitors interested in environmental conservation and sustainable travel.



<h2 class="wp-block-heading" id="h-grand-bahama-folklore">Grand Bahama folklore</h2>



On Grand Bahama Island, folklore and supernatural tales have been passed down through generations.



<h3 class="wp-block-heading" id="h-the-chickcharney">The Chickcharney</h3>



The Chickcharney is a legendary creature believed to inhabit the forests of the Bahamas, including Grand Bahama. Described as a large, bird-like creature with red eyes and three-toed feet, it is said to bring good luck to those who encounter it and treat it with respect.&nbsp;



However, those who mock or disrespect it might find themselves cursed with bad luck. The Chickcharney is deeply rooted in Bahamian folklore and is often depicted as a guardian of the forests.



<h3 class="wp-block-heading" id="h-the-ghost-of-rand-nature-center">The ghost of Rand Nature Center</h3>



The Rand Nature Center in Freeport is rumored to be haunted by the ghost of a former caretaker. Visitors and staff have reported strange occurrences, such as unexplained footsteps, cold spots, and the feeling of being watched.&nbsp;



Some believe the caretaker's spirit lingers to ensure the park is well-maintained and respected by those who visit.



<h3 class="wp-block-heading" id="h-the-lost-city-of-atlantis">The lost city of Atlantis</h3>



While not unique to Grand Bahama, the legend of Atlantis has a connection to the Bahamas. Some believe that parts of the lost city lie submerged off the coast of the island.&nbsp;



There are tales of divers encountering mysterious underwater structures and strange phenomena, leading to speculation that these ruins could be remnants of the ancient civilization.



These stories are an integral part of the island's cultural heritage, blending history, myth, and the supernatural. Whether one believes in the supernatural or not, the tales continue to capture the imagination of both locals and visitors to Grand Bahama.



Image Credit: Copernicus Sentinel data (2023), processed by ESA



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Grand Bahama: A blend of beauty and resilience 

Today's Image of the Day from NASA Earth Observatory features an astronaut view of the Aladaghlar Mountains in northwestern Iran.



These <a href="https://www.earth.com/news/how-and-why-do-mountains-form-new-theories-for-an-age-old-mystery/" target="_blank" rel="noreferrer noopener">mountains</a> are known for their strikingly colorful landscapes, which make them stand out among other mountain ranges.



<h2 class="wp-block-heading" id="h-landscape-of-the-aladaghlar-mountains">Landscape of the Aladaghlar Mountains</h2>



"Ridges cast shadows in the valleys and other low elevation areas, creating a three-dimensional appearance. Human alterations to the landscape are most evident in riverbeds, where the even topography is easier to build on and navigate," said <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.



"Natural processes over millions of years have folded rock layers of various compositions and colors into the curved patterns seen here. These folds are produced by tectonic forces operating along the convergent plate boundary of the Arabia and Eurasia plates." 



<h2 class="wp-block-heading" id="h-the-rainbow-mountains">The Rainbow Mountains</h2>



One of the most remarkable features of the Aladaghlar Mountains is the vivid coloration of their slopes. 



The name "Aladaghlar" translates to "colorful mountains," which is a testament to their unique appearance.&nbsp;They are also known as the Rainbow Mountains.



<h2 class="wp-block-heading" id="h-wildlife-of-the-aladaghlar-mountains">Wildlife of the Aladaghlar Mountains </h2>



The Aladaghlar Mountains are part of a larger <a href="https://www.earth.com/news/mountain-ecosystems-are-in-urgent-need-of-protection/" target="_blank" rel="noreferrer noopener">ecosystem</a> that includes forests, meadows, and rivers, contributing to a rich biodiversity. 



The region supports a variety of wildlife, including several species that are unique to the area. The diverse wildlife add to the natural beauty and ecological importance of these <a href="https://www.earth.com/news/how-and-why-do-mountains-form-new-theories-for-an-age-old-mystery/" target="_blank" rel="noreferrer noopener">mountains</a>.



Among the larger mammals, the mountains host species such as brown bears, Persian leopards, and wild goats. The Aladaghlar Mountains also support smaller mammals, including foxes, hares, and various rodent species.&nbsp;



<a href="https://www.earth.com/news/how-mountains-influence-bird-evolution/" target="_blank" rel="noreferrer noopener">Birdlife</a> is abundant, including eagles, falcons, and a variety of songbirds. Reptiles like lizards and snakes are commonly found in the more humid areas, as well as amphibians.&nbsp;



<h2 class="wp-block-heading" id="h-cultural-significance-of-the-region">Cultural significance of the region</h2>



In addition to their natural appeal, the Aladaghlar Mountains hold cultural significance. The region has a rich history, with evidence of ancient civilizations and historical sites. 



Local communities have their unique cultures and traditions, which have been influenced by the natural environment of the mountains.



<h2 class="wp-block-heading" id="h-geology-of-the-aladaghlar-mountains-nbsp">Geology of the Aladaghlar Mountains&nbsp;</h2>



The geological history of these <a href="https://www.earth.com/news/mountains-both-carbon-sinks-and-carbon-sources/" target="_blank" rel="noreferrer noopener">mountains</a> is a fascinating tale of millions of years of natural processes.



The Aladaghlar Mountains are primarily composed of sedimentary rocks that have accumulated over millions of years. These sediments include sandstones, siltstones, shales, and conglomerates.



<h3 class="wp-block-heading" id="h-mineral-deposition-nbsp">Mineral deposition&nbsp;</h3>



The varying colors of the Aladaghlar Mountains are largely due to the presence of different minerals in the sedimentary layers. For example, red and orange hues are typically due to iron oxides, while greens can result from copper compounds.



These minerals were deposited in the sedimentary rocks through processes such as chemical precipitation, biological activity, and the weathering of parent rocks.



<h3 class="wp-block-heading" id="h-tectonic-activity">Tectonic activity</h3>



The region has experienced significant tectonic activity due to its location near the convergent boundary between the Arabian and Eurasian plates. This tectonic activity has caused the uplift and folding of the sedimentary layers, creating the mountain range.



The compression and folding associated with tectonic movements have also contributed to the exposure of the colorful strata that were originally deposited horizontally.



<h3 class="wp-block-heading" id="h-erosion-and-weathering">Erosion and weathering</h3>



Over time, erosion and weathering processes have played a crucial role in shaping the Aladaghlar Mountains. 



Wind, water, and temperature variations have eroded the softer rock layers more quickly than the harder ones, creating the distinctive ridges and valleys seen today.



These erosive processes have also helped to expose the underlying layers, revealing the vibrant colors and intricate patterns that attract tourists and geologists alike.



<h2 class="wp-block-heading">Tales and legends</h2>



One of the most famous tales associated with the Aladaghlar Mountains is that of a hidden treasure buried deep within the mountains by an ancient Persian king.&nbsp;



According to legend, the treasure is guarded by mystical creatures and can only be found by someone pure of heart and brave enough to face the challenges of the mountain.



<h3 class="wp-block-heading">The shepherd and the fairy</h3>



Another local legend tells the story of a young shepherd who fell in love with a fairy he encountered in the Aladaghlar Mountains. The fairy granted the shepherd three wishes, but warned him that the wishes would come with consequences.&nbsp;



Despite the warning, the shepherd made his wishes, which ultimately led to his downfall, serving as a cautionary tale about the dangers of greed.



<h3 class="wp-block-heading">The healing springs</h3>



The Aladaghlar Mountains are also said to be home to a spring with magical healing properties. According to folklore, those who bathe in the spring or drink its water are cured of all ailments.&nbsp;



However, the location of the spring is a closely guarded secret, known only to a few wise elders in the nearby villages.



<h3 class="wp-block-heading">The spirit of the mountain&nbsp;</h3>



Some locals believe that the Aladaghlar Mountains are inhabited by a protective spirit, who watches over the land and its people.&nbsp;



This spirit is said to bring good fortune to those who respect the mountain and its natural beauty, but misfortune to those who exploit or harm it.



Image Credit: NASA Earth Observatory&nbsp;



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The Aladaghlar Mountains of northwestern Iran

Today's Image of the Day from NASA Earth Observatory features the Corbassière glacier, a high-altitude glacier in Switzerland. The glacier originates on the northern slope of the Grand Combin, which is one of the highest peaks in the Pennine Alps.



Collectively, the <a href="https://www.earth.com/news/alpine-glaciers-will-lose-half-of-their-volume-by-2050/" target="_blank" rel="noreferrer noopener">alpine glaciers</a> of Switzerland have lost more than half of their volume since the 1930s.



<h2 class="wp-block-heading" id="h-natural-archives-of-past-climate">Natural archives of past climate </h2>



"Glaciers are natural archives of past climate. In their frozen layers lies evidence of Earth’s changing temperature and atmospheric composition. But as the climate warms, some of the longest records of our changing planet are melting away," said <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.



"In just over two decades, Corbassière has shrunk in area and surface mass. The glacier was darker in 2023 due to lack of snow, and the glacier’s tongue had retreated."



<h2 class="wp-block-heading" id="h-ice-cores-from-the-corbassiere-glacier">Ice cores from the Corbassière glacier</h2>



To reconstruct past concentrations of atmospheric <a href="https://www.earth.com/news/how-do-aerosols-impact-the-climate/" target="_blank" rel="noreferrer noopener">aerosols</a>, a team of scientists analyzed ice cores that were collected from the Corbassière glacier in 2018 and 2020.&nbsp;



Aerosols are tiny airborne particles that are deposited in the ice. "Such information from glaciers around the world can provide clues about past environmental conditions thousands of years ago," noted NASA.



"Ice cores contain ammonium, nitrate, and sulfate ions - signatures of aerosols lacing the snow that’s deposited on glaciers year after year. Ion concentrations are lower in winter than in summer because less polluted air can rise from the valley when the air is cold."



When the researchers analyzed the ice core from 2018, they found seasonal fluctuations in the amount of ion deposits - which is what they expected to find.&nbsp;



"But when we went to core the glacier in 2020, we noticed melting on the surface right away,” said Margit Schwikowski, an environmental chemist at <a href="https://www.psi.ch/en" target="_blank" rel="noreferrer noopener">Paul Scherrer Institute</a> in Switzerland.&nbsp;



<h2 class="wp-block-heading" id="h-rapid-surface-melting-on-corbassiere-glacier">Rapid surface melting on Corbassière glacier</h2>



The experts determined that melting on the glacier's surface likely penetrated the glacier layers below and carried away the aerosol ions. 



"This melting rendered the core unusable in the team’s research, and other attempts to core the glacier had the same result. The valuable information stored in the ice was destroyed," explained NASA.



Schwikowski has joined a team of other experts in an effort to preserve cores from the last remaining glaciers. Led by the <a href="https://www.ice-memory.org/" target="_blank" rel="noreferrer noopener">Ice Memory Foundation</a>, the goal of the project is to obtain ice cores from 20 endangered glaciers around the world in 20 years and collect them in a global <a href="https://www.earth.com/news/antarcticas-ice-has-a-history-of-rapid-and-unexpected-changes/" target="_blank" rel="noreferrer noopener">climate archive</a>.



“Glaciers are retreating worldwide, and we may find similar issues at other sites,” said Schwikowski. She added that even at the highest altitudes in the Alps, "glaciers are on the verge of becoming unsuitable as natural paleo-archives."



<h2 class="wp-block-heading" id="h-features-of-the-corbassiere-glacier">Features of the Corbassière Glacier</h2>



The Corbassière Glacier is a captivating natural feature located in the Swiss Alps, part of the canton of Valais. 



The glacier stretches over approximately 9 kilometers, making it one of the significant glaciers in the region. It originates from the Grand Combin, an imposing mountain massif that reaches heights of over 4,300 meters, contributing greatly to the glacier's nourishment through snow and ice accumulation.



A distinct feature of the Corbassière Glacier is its accessibility and the dramatic scenery it offers, which attracts many hikers and nature enthusiasts. 



One of the most notable attractions near the <a href="https://www.earth.com/news/doomsday-glacier-seems-to-have-lost-its-ability-to-recover/" target="_blank" rel="noreferrer noopener">glacier</a> is the Corbassière footbridge, a 210-meter long suspension bridge that provides stunning views of the glacier and the surrounding peaks. 



This bridge not only enhances the experience for visitors but also serves as a crucial observation point for scientists studying glacier dynamics and the effects of climate change.



<h2 class="wp-block-heading">The Swiss Alps&nbsp;</h2>



The Swiss <a href="https://www.earth.com/news/snow-cover-in-the-alps-could-soon-be-cut-in-half/" target="_blank" rel="noreferrer noopener">Alps</a> are a majestic and expansive mountain range that stretches across the southern part of Switzerland, forming a part of the greater Alpine region that spreads across several countries in Europe.&nbsp;



Renowned for their stunning beauty and formidable peaks, the Swiss Alps are not just a geographical landmark but also a cultural symbol of Switzerland, epitomizing its identity as a nation of scenic landscapes and outdoor adventure.



The region is famous for its dramatic scenery, including towering mountains, pristine lakes, and picturesque valleys. Among these peaks are some of the highest in Europe, such as the Dufourspitze, part of the Monte Rosa massif, which is the highest point in Switzerland. 



The Matterhorn, perhaps the most iconic of all Swiss mountains, is celebrated for its unique, pyramid-like shape and is a magnet for climbers and tourists alike.



Image Credit: NASA Earth Observatory



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The Corbassière glacier in the Swiss Alps

Today's Image of the Day from NASA Earth Observatory features thick haze over Thailand during the fire season. The photograph was captured on March 16, 2024 by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite.



<h2 class="wp-block-heading" id="h-waves-of-smoke-and-haze">Waves of smoke and haze</h2>



"Each year in January and February, satellites begin to detect waves of smoke and fire in Southeast Asia, particularly in highland forests in Cambodia, Laos, Myanmar, and Thailand. <a href="https://www.earth.com/image/intense-fire-season-in-mexico-is-part-of-a-worldwide-trend/" target="_blank" rel="noreferrer noopener">Fire activity</a> continues to increase through March and April, reaches a peak during the height of the dry season, and then fades in May with the start of the rainy season," noted <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.



"Individual fires are usually small and short-lived. But they are often so numerous that smoke, along with air pollution from rural and urban areas, mixes to produce thick layers of haze that blanket the landscape." 



According to NASA, the haze contains mixtures of small airborne particles called aerosols and gaseous pollutants such as nitrogen dioxide, sulfur dioxide, carbon monoxide, and ozone that degrade air quality.



<h2 class="wp-block-heading" id="h-haze-in-thailand-nbsp">Haze in Thailand&nbsp;</h2>



An international field campaign - the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ) - was launched to investigate the haze in Thailand.



"During the last two weeks of March 2024, NASA’s DC-8 and Gulfstream III aircraft flew several flights over Chiang Mai, Bangkok, and rural areas surrounding the cities to sample air quality with several sensors. At the same time, satellites observed the haze from above," said NASA.



James Crawford, ASIA-AQ’s principal investigator, said the team is collaborating closely with national and local government entities in Thailand.



“The goal is to take as many simultaneous measurements of pollutants as possible from the ground, air, and space,” said Crawford. The team will use the data to gain a better understanding of how the haze forms, evolves chemically over time, and moves throughout the region.



<h2 class="wp-block-heading" id="h-haze-and-public-health-in-thailand">Haze and public health in Thailand </h2>



According to media reports, nearly 200,000 people have been hospitalized this year due to air quality in the region, with over 1.3 million people falling ill since January.&nbsp;



<h3 class="wp-block-heading" id="h-causes-of-the-haze">Causes of the haze</h3>



The root causes of the haze include agricultural burning, particularly of corn fields, as part of slash-and-burn practices to prepare land for the next planting cycle. This is exacerbated by the dry season when there's little rain to wash the pollutants away. 



The situation is worsened by industrial emissions and vehicle fumes, particularly in urban areas like Bangkok​.



<h3 class="wp-block-heading" id="h-sustainable-solutions-are-needed">Sustainable solutions are needed</h3>



Efforts to address the crisis have been complex, involving local and transboundary issues. Much of the agricultural burning occurs not only within Thailand but also in neighboring countries like Myanmar and Laos, contributing to the transboundary nature of the haze. 



Activists and local communities have called for sustainable solutions that do not exacerbate the poverty of smallholder farmers, emphasizing the need for affordable and realistic alternatives to burning​.



<h3 class="wp-block-heading" id="h-mitigation-measures-nbsp">Mitigation measures&nbsp;</h3>



The Thai government has implemented a no-burning rule until the end of April to combat wildfires and haze, but enforcement and effectiveness remain challenges​​. 



Some measures taken to mitigate the immediate effects of pollution in urban areas include spraying water and seeding clouds to encourage rain, although these have had limited success​​.



This ongoing environmental crisis has sparked widespread concern among citizens, who are increasingly using public interest litigation to hold companies and the government accountable for environmental commitments. 



With recent political changes, there is hope that the new administration will take more decisive action against the haze, possibly through more stringent regulations and international cooperation​​.



<h2 class="wp-block-heading" id="h-health-impacts-of-haze">Health impacts of haze</h2>



Haze poses several health hazards for those exposed to it, particularly when it contains fine particulate matter (PM2.5). Here are some of the main health risks associated with exposure to haze:



<h3 class="wp-block-heading" id="h-respiratory-problems">Respiratory problems</h3>



Haze can aggravate conditions such as asthma, bronchitis, and other chronic obstructive pulmonary diseases (COPD). The fine <a href="https://www.earth.com/news/heatwaves-and-air-pollution-may-double-fatal-heart-attack-risk/">particles</a> can penetrate deep into the lungs, causing inflammation and reducing lung function.



<h3 class="wp-block-heading" id="h-cardiovascular-issues-and-haze">Cardiovascular issues and haze</h3>



Exposure to fine particulate matter can also affect the cardiovascular system, leading to increased risk of heart attacks, strokes, and high blood pressure. Particles can affect blood vessel function and promote the formation of blood clots.



<h3 class="wp-block-heading" id="h-eye-irritation">Eye irritation</h3>



Haze can cause eye irritation, leading to conditions such as conjunctivitis (pink eye) or exacerbated symptoms in people with existing eye conditions.



<h3 class="wp-block-heading" id="h-skin-problems">Skin problems</h3>



For some people, exposure to <a href="https://www.earth.com/news/air-pollution-will-increase-dramatically-in-a-hotter-climate/">polluted air</a> can cause skin irritation or exacerbate skin conditions like eczema or psoriasis.



<h3 class="wp-block-heading" id="h-reduced-immune-function">Reduced immune function</h3>



There is evidence to suggest that prolonged exposure to polluted air can weaken the immune system, making individuals more susceptible to infections.



<h3 class="wp-block-heading" id="h-impact-on-mental-health">Impact on mental health</h3>



There are growing concerns about the impact of air pollution on <a href="https://www.earth.com/news/air-pollution-linked-to-multiple-chronic-health-conditions/">mental health</a>, with studies suggesting a link between exposure to polluted air and an increased risk of depression and anxiety.



<h3 class="wp-block-heading" id="h-pregnant-women-and-children">Pregnant women and children</h3>



Pregnant women, children, and the elderly are particularly vulnerable to the effects of haze. There may be increased risks of preterm birth and low birth weight in babies, and children may experience delayed development and reduced lung function.



The health impacts of haze can be mitigated by staying indoors on days when <a href="https://www.earth.com/news/twenty-years-of-air-quality-improvement-erased-by-wildfires/" target="_blank" rel="noreferrer noopener">air quality</a> is particularly poor, using air purifiers, wearing masks designed to filter out fine particles, and following local health advisories.



Image Credit: NASA Earth Observatory



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<h3 class="wp-block-heading" id="h-nbsp">&nbsp;</h3>

Haze pollution is an environmental crisis in Thailand

Today's Image of the Day from NASA Webb Images features an extraordinary view of Uranus, the seventh planet from the sun in our solar system.&nbsp;



The photo reveals the rings, moons, and extreme seasons of the ice giant Uranus in unprecedented detail.&nbsp;



<h2 class="wp-block-heading" id="h-dynamic-north-polar-cap-nbsp">Dynamic north polar cap&nbsp;</h2>



“The Webb image exquisitely captures Uranus’s seasonal north polar cap, including the bright, white, inner cap and the dark lane in the bottom of the polar cap,” noted NASA.



Unlike Earth, where polar ice caps are formed by the freezing of water, Uranus's polar caps are thought to be primarily composed of a dense concentration of haze in the atmosphere.&nbsp;



The polar cap's haze is likely composed of methane particles. Methane in Uranus's atmosphere condenses into ice particles, which then create a thick haze that scatters sunlight, giving the polar cap its distinct bright appearance in visible and infrared light.



The polar cap is dynamic and changes over time. It becomes more prominent during the summer season of each pole. 



As Uranus moves along its orbit, the cap's appearance transforms, with the haze becoming thicker and brighter when the pole is in continuous sunlight.



<h2 class="wp-block-heading" id="h-the-zeta-ring-nbsp">The Zeta ring&nbsp;</h2>



The inner and outer rings of Uranus are visible in the image, including Zeta - the innermost ring which is the faintest and most difficult to observe.



The <a href="https://www.earth.com/news/stunning-photo-of-uranus-and-its-rings-and-moons-captured-by-the-webb-telescope/" target="_blank" rel="noreferrer noopener">rings of Uranus</a> are primarily composed of narrow bands of particles, likely made of water ice mixed with a dark material. These rings are distinct from those of Saturn in that they are much darker and narrower.



The faintness and characteristics of the Zeta ring make it a subject of interest in studies related to the dynamics and composition of planetary ring systems.



<h2 class="wp-block-heading" id="h-moons-of-uranus-nbsp">Moons of Uranus&nbsp;</h2>



The <a href="https://science.nasa.gov/mission/webb/multimedia/images/" target="_blank" rel="noreferrer noopener">Webb</a> photo also features nine of the planet’s <a href="https://www.earth.com/news/nasa-four-uranus-moons-may-have-oceans-that-are-miles-deep/" target="_blank" rel="noreferrer noopener">moons</a>, which appear as blue dots surrounding the rings.&nbsp;



“Clockwise starting at 2 o’clock, they are: Rosalind, Puck, Belinda, Desdemona, Cressida, Bianca, Portia, Juliet, and Perdita. The orbits of these moons share the 98-degree tilt of their parent planet relative to the plane of the solar system,” noted NASA.



Uranus has 27 known moons, and they are divided into three main groups based on their orbits: the inner moons, the major moons, and the irregular moons.



The <a href="https://www.earth.com/news/uranus-moon-ariel-may-have-a-hidden-ocean/" target="_blank" rel="noreferrer noopener">moons</a> of Uranus are unique because they are named after characters from the works of William Shakespeare and Alexander Pope, rather than being named after figures from classical mythology, as is common for the moons of other planets.



<h2 class="wp-block-heading" id="h-the-ice-giant-uranus-nbsp">The ice giant Uranus&nbsp;</h2>



Uranus is classified as an "ice giant" because, unlike the gas giants Jupiter and Saturn, which are primarily composed of hydrogen and helium, Uranus has a significant proportion of "ices" in its composition.&nbsp;



In astronomical terms, ices refer to volatile substances like water, ammonia, and methane, which exist in solid or liquid forms at the low temperatures found in the outer solar system.



Uranus has a thick atmosphere of hydrogen and helium, but beneath that, it contains a large, dense mantle composed of these ices, along with rock and other heavier elements.&nbsp;



The term <a href="https://www.earth.com/news/diamond-rain-may-be-common-on-giant-icy-planets/" target="_blank" rel="noreferrer noopener">ice giant</a> differentiates Uranus (and Neptune, the other ice giant) from the larger gas giants, emphasizing the different chemical compositions and internal structures of these planets.



<h2 class="wp-block-heading" id="h-climate-of-uranus-nbsp">Climate of Uranus&nbsp;</h2>



Uranus has a unique and extreme climate, largely influenced by its unusual tilt, which causes the planet to rotate almost on its side. This tilt leads to extreme seasonal variations, with each pole experiencing 42 years of continuous sunlight followed by 42 years of darkness.&nbsp;



Even though it is closer to the sun than Neptune, Uranus is the coldest planet in the solar system, with temperatures plunging to as low as -224°C (-371°F). The reason for this is not fully understood, but it might be due to an internal heat distribution anomaly.



Despite these frigid conditions, Uranus experiences intense weather patterns, including powerful storms and winds that can reach speeds of up to 900 kilometers per hour. These winds blow in the same direction as the planet’s rotation and are some of the fastest in the solar system.



Storms on Uranus are driven by its internal heat and the interaction of its <a href="https://www.earth.com/news/uranus-is-more-gassy-less-icy-than-we-ever-imagined/" target="_blank" rel="noreferrer noopener">atmospheric gases</a>. Observations have shown that these storms can be quite large, sometimes comparable in size to the Earth, and can last for several years.&nbsp;



The planet’s extreme axial tilt also means that the storms and weather patterns are highly variable, depending on the season. During equinoxes, when the Sun is directly over the equator, Uranus exhibits more storm activity compared to when the poles are pointed towards the Sun or away from it.



<h2 class="wp-block-heading" id="h-observations-of-uranus">Observations of Uranus</h2>



“One day on Uranus is about 17 hours, so the planet’s rotation is relatively quick. This makes it supremely difficult for observatories with a sharp eye like Webb to capture one simple image of the entire planet - storms and other atmospheric features, and the planet’s moons, move visibly within minutes,” explained NASA.



“This image combines several longer and shorter exposures of this dynamic system to correct for those slight changes throughout the observing time.”



The first recorded observations of Uranus were made by John Flamsteed on December 13, 1690. However, Flamsteed mistakenly identified the planet as a star, which he named “34 Tauri."&nbsp;



It wasn't until March 13, 1781, that Uranus was officially identified as a planet by William Herschel. He initially thought he had discovered a comet, but further observations and calculations by other astronomers confirmed that it was a new planet, making Uranus the first planet discovered in modern history with the aid of a telescope.



Image Credit: NASA, ESA, CSA, STScI



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The ice giant Uranus in stunning detail

Today's Image of the Day from NASA Webb Images features...

Today's Image of the Day from NASA Earth Observatory features a strong extratropical cyclone, which struck the Pacific Northwest on November 19, 2024.



“The storm knocked over trees and left nearly 600,000 people without power in Washington state on November 20, according to news reports,” noted <a href="https://search.app?link=https%3A%2F%2Fearthobservatory.nasa.gov%2Fimages%2F153605%2Fextratropical-cyclone-whips-over-the-pacific-northwest&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">NASA</a>. “This image shows the storm system at 1:50 p.m. Pacific Time on November 19.” 



According to NASA, mature extratropical cyclones like this often feature comma-shaped cloud patterns that are the product of ‘conveyor belt’ circulation. “Heavy precipitation is often present near the low-pressure head of the comma.”



<h2 class="wp-block-heading" id="h-impacts-of-the-extratropical-cyclone-nbsp">Impacts of the extratropical cyclone&nbsp;</h2>



The “bomb cyclone” brought <a href="https://search.app?link=https%3A%2F%2Fwww.earth.com%2Fnews%2Fhow-much-does-climate-change-influence-extreme-weather-events%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">severe weather</a>, including strong winds exceeding 70 mph, heavy rainfall, and snow in higher elevations. These conditions led to significant disruptions, including downed trees and hazardous travel conditions.



In urban and rural areas, damage to infrastructure and properties was substantial, with emergency responders and utility crews working around the clock to restore services.&nbsp;



Additionally, mountain passes faced dangerous blizzard conditions, with up to 20 inches of snow accumulating in some areas, severely affecting travel.



<h2 class="wp-block-heading" id="h-rapid-pace-of-acceleration">Rapid pace of acceleration</h2>



Chris Dolce is a meteorologist at The Weather Channel. He noted that on the evening of November 19, the storm’s central pressure dropped to levels on par with a storm in October 2021, which saw the lowest pressure in about 50 years of records for that region.



“The pace of the storm’s intensification was more than double the criteria for bombogenesis - a popular term that describes a midlatitude cyclone that rapidly intensifies into a ‘bomb cyclone,’” said NASA.



The rapidly dropping atmospheric pressure at the center of the <a href="https://search.app?link=https%3A%2F%2Fwww.earth.com%2Fnews%2Fcoastal-hurricanes-are-intensifying-faster-due-to-climate-change%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">storm</a> caused winds to intensify quickly. According to the National Weather Service in Seattle, wind gusts reached up to 77 miles per hour in the mountains southeast of the city.



“The cyclone kicked off a long-duration atmospheric river that forecasters expect will park over Northern California and southern Oregon through November 22. The National Weather Service estimates that these areas could see rainfall totals of 12 to 16 inches over the duration of the storm,” noted NASA.



<h2 class="wp-block-heading" id="h-what-is-an-extratropical-cyclone">What is an extratropical cyclone?</h2>



An extratropical cyclone is a large-scale weather system that forms outside the tropics, typically between 30° and 60° latitude, and is associated with areas of low pressure.&nbsp;



<h3 class="wp-block-heading" id="h-energy-source">Energy source</h3>



These cyclones obtain their energy from the contrast in temperature between air masses, such as cold polar air and warm subtropical air. This contrast creates instability and drives atmospheric circulation.



<h3 class="wp-block-heading" id="h-development-of-extratropical-cyclones-nbsp">Development of extratropical cyclones&nbsp;</h3>



Extratropical cyclones usually have well-defined warm and cold fronts. They often develop along the polar front, where cold and warm air masses meet.



A common area for their development is the mid-latitudes, particularly in regions like the North Atlantic and North Pacific.



<h3 class="wp-block-heading" id="h-weather-conditions">Weather conditions</h3>



Extratropical cyclones can bring a variety of <a href="https://search.app?link=https%3A%2F%2Fwww.earth.com%2Fnews%2Fhuman-activity-is-rapidly-changing-weather-in-north-america%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">weather conditions</a>, including heavy rain, snow, strong winds, and severe storms. They are responsible for much of the day-to-day weather in mid-latitude regions.



<h3 class="wp-block-heading" id="h-tropical-vs-extratropical-cyclones-nbsp">Tropical vs. extratropical cyclones&nbsp;</h3>



While <a href="https://search.app?link=https%3A%2F%2Fwww.earth.com%2Fnews%2Ffast-moving-tropical-cyclones-are-becoming-more-powerful%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">tropical cyclones</a> derive energy from warm ocean waters and have a warm core, extratropical cyclones gain energy from temperature contrasts and have a cold core.



Tropical cyclones typically lack fronts, whereas extratropical cyclones are defined by them.



These systems are essential in distributing heat and energy across the planet, playing a critical role in the Earth's climate system.



<h2 class="wp-block-heading" id="h-caught-off-guard-by-the-weather">Caught off guard by the weather</h2>



The bomb cyclone in the Pacific Northwest highlights the importance of <a href="https://search.app?link=https%3A%2F%2Fwww.earth.com%2Fnews%2Fnew-era-in-forecasting-ai-will-improve-extreme-weather-warnings%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">preparedness</a>, as residents were urged to secure loose outdoor items, stock emergency supplies, and avoid unnecessary travel.



The fire department in Bellevue, east of Seattle, posted a Severe Weather Safety alert on Facebook: “It’s severe out there. Trees are coming down all over the city, with multiple falling onto homes. If you are able, head to the lowest floor you can and stay away from windows. Do not go outside if you can avoid it.”



The image was captured by the VIIRS (Visible Infrared Imaging Radiometer Suite) on NOAA’s JPSS-1 (Joint Polar Satellite System-1).



Image Credit: NASA Earth Observatory



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Bomb cyclone rapidly intensified in the Pacific Northwest

The MODIS instrument, short for Moderate Resolution Imaging Spectroradiometer, is a key instrument aboard the Terra and Aqua satellites. MODIS is playing a vital role in the development of Earth ecosystem models, able to predict global changes, which then assist policy makers in making informed decisions about the protection of the global environment.

Heavy snow and cloud cover in the Alps are seen in this Image of the day&nbsp;from the <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> and features a look at heavy snow and low clouds in the Alps. Wildlife such as ibex live in the higher peaks to elevations of 3,400 m (11,155 ft), and plants such as Edelweiss grow in rocky areas in lower elevations as well as in higher elevations.

Heavy snow and cloud cover in the Alps

Monitoring Earth Changes with MODIS

Aqua is a NASA scientific research satellite that studies precipitation, evaporation, and water cycles. Terra and Aura make up the Earth Observing System. It's the second component of the system.

A frozen Lake Erie in February Today’s Image of the Day comes from the <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> and features a look at a frozen <a href="https://www.earth.com/image/icy-lake-erie/">Lake Erie</a>, which is currently 93.3 percent iced over. A frozen Lake Erie in February
This false-color image was created using data from the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the Aqua satellite to differentiate between snow, ice, and clouds.
Lake Erie /ˈɪəri/ (French: Lac Érié) is the fourth-largest lake (by surface area) of the five Great Lakes in North America, and the eleventh-largest globally if measured in terms of surface area.It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has the shortest average water residence time. At its deepest point Lake Erie is 210 feet (64 metres) deep. 
Situated on the International Boundary between Canada and the United States, Lake Erie&#8217;s northern shore is the Canadian province of Ontario, specifically the Ontario Peninsula, with the U.S. states of Michigan, Ohio, Pennsylvania, and New York on its western, southern, and eastern shores. These jurisdictions divide the surface area of the lake with water boundaries. 
The lake was named by the Erie people, a Native American people who lived along its southern shore. The tribal name &#8220;erie&#8221; is a shortened form of the Iroquoian word erielhonan, meaning long tail
&#8212;
By <a href="mailto:rarnold@earth.com">Rory Arnold</a>, <a href="https://www.earth.com/staff">Earth.com</a> Staff Writer
Image Credit: <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a>

A frozen Lake Erie in February

Aqua Earth Observing Satellite

This beautiful photo gallery contains 50 incredible images of Earth from Space. These images were taken by astronauts onboard the International Space Station, as well as by a multitude of NASA satellites orbiting the earth.

Today’s Image of the Day comes thanks to the <a href="https://earthobservatory.nasa.gov/IOTD/view.php?id=90654&amp;eocn=home&amp;eoci=iotd_readmore">NASA Earth Observatory</a> and features a look at Super Typhoon Noru in the Pacific Ocean just south of <a href="https://www.earth.com/news/first-blue-chrysanthemums-created/">Japan</a>.
This image was captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite on July 31, 2017. 
At the time the photo was taken, Typhoon Noru was located just 250 kilometers south of Iwo Jima. Maximum sustained winds hit 150 miles per hour.
The storm briefly became a category 5 on July 30, before being downgraded to a category 4 one day later.
&#8211;
By <a href="mailto:rarnold@earth.com">Rory Arnold</a>, <a href="https://www.earth.com/staff">Earth.com</a> Staff Writer
Source: <a href="https://earthobservatory.nasa.gov/IOTD/view.php?id=90654&amp;eocn=home&amp;eoci=iotd_readmore">NASA Earth Observatory</a>

Super Typhoon Noru in the Pacific Ocean

Incredible Images of Earth from Space

Photos from the International Space Station are found in this awesome Earth.com image gallery. Flat-earthers won't agree, but these incredible photos of the Earth were taken by astronauts onboard the International Space Station. The International Space Station is a modular space station in low Earth orbit.

Northern Italy from the space station is seen here in this Image of the Day from the <a href="http://www.esa.int/">European Space Agency</a> (ESA). The view includes the top half of the Italian Peninsula, along with <a href="https://www.earth.com/image/wildfires-burn-northern-corsica/">Corsica</a> and Sardinia off the coast. This image was captured by ESA astronaut Paolo Nespoli on his third and final mission to the Space Station.

Northern Italy from the Space Station

Photos from the International Space Station

They say the sea has many secrets, but the intriguing tale of coral adaptation to oceanic temperature changes, amid the impacts of climate change, may not be hidden for much longer.



The stakes are high; without swift curbs on global greenhouse gas emissions, our coral reefs might not keep up with the demands of a warming sea. 



This revelation comes courtesy of an international team of scientists who are striving to peer beyond the turbid waters of environmental uncertainty.



<h2 class="wp-block-heading" id="h-coral-bleaching-from-climate-change">Coral bleaching from climate change</h2>



At the lead of this crucial research is Dr. Liam Lachs, an esteemed figure from <a href="https://www.ncl.ac.uk" target="_blank" rel="noreferrer noopener">Newcastle University</a>. With his dedicated team, he has introduced us to a startling possibility. 



<a href="https://www.earth.com/news/coral-reefs-may-be-more-resilient-than-we-thought/" target="_blank" rel="noreferrer noopener">Coral reefs</a> might weather the heat of our warming oceans, but only if we rally behind the commitments of the Paris Agreement and keep global warming within the reasonable limit of two degrees Celsius.



“The reality is that marine heatwaves are triggering mass coral bleaching mortality events across the world’s shallow tropical reef ecosystems, and the&nbsp;increasing frequency and intensity&nbsp;of these events is set to ramp up under climate change,” explained Dr. Lachs.



While there are ripples of hope from recent studies that suggest the potential for adaptation among corals, one fundamental question remains. Can this adaptation, driven by natural selection, keep pace with global warming?



<h2 class="wp-block-heading" id="h-the-case-of-the-palau-corals">The case of the Palau Corals</h2>



For answers, the researchers turned to the serene corals of Palau in the western Pacific Ocean. The team built an eco-evolutionary simulation model of <a href="https://www.earth.com/news/healthy-coral-transplants-could-revolutionize-reef-restoration/" target="_blank" rel="noreferrer noopener">coral populations</a> using these corals.



They integrated data regarding the evolutionary biology of common but thermally sensitive corals and their ecology.



With this, the researchers determined the potential consequences of various future scenarios, considering global development and fossil fuel usage.



"Our world is expected to warm by 3-5 degrees by the end of this century if we do not achieve Paris Agreement commitments. Under such levels of warming, natural selection may be insufficient to ensure the survival of some of the more sensitive yet important coral species," cautioned study co-author Professor Peter Mumby from the <a href="https://uq.edu.au" target="_blank" rel="noreferrer noopener">University of Queensland</a>.



<h2 class="wp-block-heading" id="h-future-of-corals-and-climate-change">Future of corals and climate change</h2>



The models suggest dire consequences. We can foresee drastic reductions in reef health that will potentially push thermally sensitive coral species towards local extinction.



However, there is still room for hope as we don't yet fully understand the "evolvability" of coral populations.



Dr. James Guest, who leads the Coralassist Lab, emphasized the urgency for climate-smart management options. He also stressed the significance of collaborative efforts among researchers, conservationists, and policymakers to tackle the challenges faced by <a href="https://www.earth.com/news/multivitamins-could-save-coral-reefs-from-climate-destruction/" target="_blank" rel="noreferrer noopener">coral populations</a>.



By promoting interdisciplinary collaborations and knowledge-sharing, we can develop comprehensive strategies that address the complex interplay of environmental and genetic factors impacting coral resilience. 



This multidisciplinary approach will be crucial in formulating effective management plans and conservation initiatives.



<h2 class="wp-block-heading" id="h-investing-in-research-and-innovation">Investing in research and innovation</h2>



According to Dr. Guest, there is a crucial need to invest in research and innovation to mitigate the threats faced by coral populations.



"One such option, still at the experimental stages to date, would be the use of targeted assisted evolution interventions that, for&nbsp;instance, could improve heat tolerance through selective breeding," Dr. Guest said, offering up a glimmer of hope.



By expanding our understanding of coral evolvability and exploring novel techniques, such as assisted evolution interventions, we can unlock innovative solutions to enhance coral resilience.



Increased funding and support for scientific research will enable us to develop new tools, technologies, and strategies that empower us to safeguard coral <a href="https://www.earth.com/news/crown-of-thorns-starfish-thrive-in-degraded-coral-reefs/" target="_blank" rel="noreferrer noopener">ecosystems</a> for generations to come.



<h2 class="wp-block-heading" id="h-urgent-need-for-climate-action">Urgent need for climate action</h2>



In the end, it all circles back to the dire need for immediate climate action. 



“Taken together, the results of our models suggest that genetic adaptation could offset some of the projected loss of coral reef functioning and biodiversity over the 21st&nbsp;Century, if rapid climate action can be achieved,” concluded Dr. Lachs.



Coral reefs - home to an astonishing range of marine life - are pivotal to our marine ecosystems. They are nature's treasure, and losing them would be tantamount to facing cultural and ecological bankruptcy.



The question remains: will we act in time to save coral reefs from climate change? Or will we merely spectate as these reefs slowly fade into extinction?



The study is published in the journal <a href="https://www.science.org/doi/10.1126/science.adl6480" target="_blank" rel="noreferrer noopener">Science</a>.



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Coral reefs may not adapt quickly enough to survive climate change

They say the sea has many secrets, but the intriguing...

For Neanderthals, the most advanced technology wasn't necessarily metal or stone; it could have been a simple piece of sticky plant matter.



This remarkable adhesive, used to bind tools or even chewed for health benefits, played a crucial role in daily life.



While it's long been known that Neanderthals relied on birch tar, the mystery of how they extracted and processed this valuable substance has remained unsolved - until now.



<h2 class="wp-block-heading" id="h-the-forgotten-neanderthal-pit">The forgotten Neanderthal pit</h2>



A remarkable study involving researchers from the <a href="https://ics-seville.org/university-of-seville/" target="_blank" rel="noreferrer noopener">University of Seville</a> has offered the answers we've been looking for.



Inside the Vanguard Cave in Gibraltar, researchers unearthed a structure that aligns with theories about how the Neanderthals could have obtained the resinous tar from processing different plants.



The humble structure appears to be a simple pit, but it has monumental implications as a presumed anoxic heating chamber. Its simplicity meant that the pit's potential significance was overlooked.



However, this structure's discovery in a UNESCO World Heritage Site, known as Gorham’s Caves Complex, is foundational in our understanding of <a href="https://www.earth.com/news/early-humans-impacted-earth-than-previously-thought-2/" target="_blank" rel="noreferrer noopener">ancient human activities</a>.



The site's preservation is due to its swift encapsulation by a dune.



<h2 class="wp-block-heading" id="h-exceptional-cognitive-abilities-of-neanderthals">Exceptional cognitive abilities of Neanderthals </h2>



The discovery was not a one-man job. A team of 31 researchers, hailing from more than five countries and specializing in 15 different fields, collaborated to establish that this structure indeed dates back 60,000 years to Neanderthal times.



The University of Seville's own Fernando Muñiz clarifies that Neanderthals were not, as often depicted, crude and brutal beings.



In fact, the discovery reaffirms that they demonstrated <a href="https://www.earth.com/news/neanderthal-behavior-provides-clues-about-their-extinction/" target="_blank" rel="noreferrer noopener">exceptional cognitive abilities</a> as they were able to use chemical processes to create a resinous adhesive for their tools.



<h2 class="wp-block-heading" id="h-neanderthals-were-masters-of-technology">Neanderthals were masters of technology</h2>



According to Clive Finlayson, the excavation manager, creating this adhesive substance would have required a thoughtful process. This includes selecting the appropriate plants and extracting the resin without incinerating them.



To validate that the Neanderthals constructed the structure, the team developed methodologies and even completed an archaeological exercise. 



Evidence also suggests that the adhesive resin may have been extracted from the prickly <a href="https://www.earth.com/news/how-do-plants-handle-competition-during-extreme-drought/" target="_blank" rel="noreferrer noopener">rockrose plant</a>, a tree that was more prevalent in Mediterranean latitudes during Neanderthal times.



This transformative project sets a precedent in understanding the technological prowess and organizational capacity of the Neanderthals.



Led by the Gibraltar Museum, the University of Murcia, the Andalusian Earth Sciences Institute, and with contributions from the University of Seville, the project is shedding new light on <a href="https://www.earth.com/news/study-provides-insights-into-the-lives-of-neanderthals/" target="_blank" rel="noreferrer noopener">Neanderthal life</a>.



<h2 class="wp-block-heading" id="h-uncovering-evidence-of-early-artistry">Uncovering evidence of early artistry</h2>



Finlayson's team also discovered a unique hashtag-like mark on a piece of limestone in 2012. This simple yet significant engraving is seen by experts as evidence of early artistry.



Neanderthals also collected feathers - specifically black ones - from a variety of birds, possibly for decorative or ceremonial purposes.



Neanderthals had an understanding of medicinal plants and even buried their dead. Jewelry-making and specialized <a href="https://www.earth.com/news/neanderthals-glue-created-and-used-underestimated-intelligence/" target="_blank" rel="noreferrer noopener">tool creation</a> were also part of their innovation basket.



According to Muñiz, they could communicate vocally and possibly had high-pitched, hoarse voices.



As our understanding of these prehistoric humans deepens, it becomes increasingly clear that there was more to them than meets the eye. Through ingenuity, organization, and craft, they were indeed masters of their primitive world.



<h2 class="wp-block-heading" id="h-an-impressive-legacy-of-innovation">An impressive legacy of innovation</h2>



The discovery of the adhesive-making pit in Gibraltar challenges our modern perception of innovation. 



While technology today is often associated with complexity, the Neanderthals demonstrate that simplicity and ingenuity can coexist. 



Their ability to adapt natural resources to solve practical problems, like binding tools with resinous extracts, highlights an advanced understanding of materials science and environmental management.



<h2 class="wp-block-heading" id="h-early-form-of-experimental-circumstances">Early form of experimental circumstances </h2>



Beyond practicality, their actions reveal a deeper connection to their environment. By selecting specific plants and mastering controlled heating techniques, Neanderthals showcased an early form of experimental learning that enabled them to refine processes through observation and iteration.



This suggests they not only developed innovative methods but also passed down this knowledge across generations, forming the building blocks of technological heritage.



This discovery also serves as a reminder of the fragility of human history. Structures like the resin pit are rare finds, preserved only under exceptional circumstances. 



The swift encapsulation of the site by sand dunes has protected a story that might otherwise have been lost to time. 



These ancient innovations, hidden beneath layers of sediment, remind us of the resilience and ingenuity of our distant relatives, and inspire us to look at innovation through a broader, more inclusive lens.



The full study was published in the journal <a href="https://www.sciencedirect.com/science/article/pii/S0277379124005274?via%3Dihub" target="_blank" rel="noreferrer noopener">Quaternary Science Reviews</a>.



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How Neanderthals mastered adhesive technology

For Neanderthals, the most advanced technology wasn't necessarily metal or...

Imagine&nbsp;being&nbsp;able&nbsp;to&nbsp;add&nbsp;years to your life with just&nbsp;a little&nbsp;bit of&nbsp;physical activity. This&nbsp;is&nbsp;not a&nbsp;pipe dream.



Researchers&nbsp;from&nbsp;Griffith&nbsp;University have conducted&nbsp;a new study that found raising the level of&nbsp;movement may make a significant difference&nbsp;in&nbsp;extending&nbsp;one's&nbsp;lifespan.



The&nbsp;researchers&nbsp;concluded&nbsp;that&nbsp;being as active as the top 25&nbsp;percent&nbsp;of the population could help someone over&nbsp;40&nbsp;live&nbsp;for&nbsp;five extra years. That's&nbsp;equivalent&nbsp;to&nbsp;gaining an extra half-decade&nbsp;just&nbsp;by making movement a regular part of your day.



Whether it's a <a href="https://www.earth.com/news/walk-20-minutes-daily-to-boost-your-brain-power/" target="_blank" rel="noreferrer noopener">daily walk</a>, a cycling routine, or even taking the stairs more often, the path to a longer, healthier life is surprisingly accessible.



<h2 class="wp-block-heading" id="h-physically-active-people-live-longer">Physically active people live longer</h2>



Physical activity has long been known to improve health, but estimates on the specific benefits of different activity levels have varied. 



This recent study used accelerometry - a more precise method than traditional surveys - to track physical activity levels across populations.



The findings? The benefits of physical activity were about twice as robust as previously believed.



According to the study, the most active quarter of individuals had a 73% <a href="https://www.earth.com/news/stair-climbing-linked-to-a-24-percent-lower-risk-of-mortality/" target="_blank" rel="noreferrer noopener">lower risk of death</a> compared to their least active counterparts. For the least physically active, even small changes could make a massive difference.



"A single, one-hour walk could potentially return a benefit of around six additional hours of life," said lead researcher Professor Lennert Veerman.



<h2 class="wp-block-heading" id="h-potential-in-the-least-physically-active-people">Potential in the least physically active people</h2>



Professor Veerman emphasized the opportunity of physical activity - particularly for the least active segment of the population.



"If the least active quartile of the population over age 40 were to increase their activity level to that of the most active quartile, however, they might live, on average, about 11 years longer," he explained.



While those who are already highly active may not see significant additional benefits, for others, the equivalent of just under three hours of walking per day could be transformative.



"This is not an unreasonable prospect, as 25% of the population is already doing it," Veerman noted.



<h2 class="wp-block-heading" id="h-physical-inactivity-rivals-smoking">Physical inactivity rivals smoking</h2>



The research team suggested that inactivity could rival <a href="https://www.earth.com/news/quitting-smoking-at-any-age-brings-big-and-immediate-health-benefits/" target="_blank" rel="noreferrer noopener">smoking</a> in terms of its health risks.



With other studies finding that each cigarette can take 11 minutes off a smoker’s life, the implications for doing some physical activity are profound.



Dr. Veerman highlighted the underestimated potential of exercise. "If there's something you could do to more than halve your risk of death, physical activity is enormously powerful," he said.



<h2 class="wp-block-heading" id="h-building-a-healthier-future">Building a healthier future</h2>



The findings also highlight the importance of creating environments that encourage movement. 



For example, <a href="https://www.earth.com/news/walkable-neighborhoods-help-reduce-cardiovascular-risk/" target="_blank" rel="noreferrer noopener">walkable neighborhoods</a> and accessible cycling paths could promote activity, reduce healthcare pressures, and improve environmental sustainability.



This study from <a href="https://www.griffith.edu.au/" target="_blank" rel="noreferrer noopener">Griffith University</a> reinforces the need for governments to revisit national physical activity guidelines.



The message is clear: even modest increases in movement can unlock extraordinary health benefits and transform societal well-being. 



<h2 class="wp-block-heading" id="h-global-implications-of-physical-activity">Global implications of physical activity</h2>



The benefits of becoming more physically active extend beyond individual health. On a global scale, promoting <a href="https://www.earth.com/news/active-aging-physical-activity-has-a-direct-impact-on-life-quality/" target="_blank" rel="noreferrer noopener">active lifestyles</a> could reduce the burden of chronic diseases, lower healthcare costs, and even combat climate change.



As cities around the world grapple with rising rates of sedentary behavior, the study’s findings offer a powerful incentive to invest in infrastructure that encourages movement.



Studies have shown that active commuters often report better mental health and lower rates of chronic illnesses, making this a win-win for both personal and planetary health.



<h2 class="wp-block-heading" id="h-bringing-movement-into-the-workplace">Bringing movement into the workplace</h2>



This study also shines a light on how workplaces can make a difference. Let’s face it, many of us spend most of our day sitting at a desk - barely moving.



But what if workplaces could encourage healthier habits? Small changes like standing desks, walking meetings, or even rewards for taking the stairs could make a big impact.



Not only would this help employees stay healthier, but it could also make work more enjoyable. 



Studies show that moving more can reduce stress, boost energy levels, and even help with focus.



By creating spaces that make it easier to stay active, companies could help employees feel better and be more productive.



The full study is published in the <a href="https://pubmed.ncbi.nlm.nih.gov/39542739/">British Journal of Sports Medicine</a>.



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Becoming more physically active could add 11 years to your life

Imagine&nbsp;being&nbsp;able&nbsp;to&nbsp;add&nbsp;years to your life with just&nbsp;a little&nbsp;bit of&nbsp;physical activity. This&nbsp;is&nbsp;not...

The next time you clean out your closet and happily donate old clothes to charity, you might want to stop and think for a moment.



We are taught growing up that by donating clothes we don't need to charity, they will ultimately end up in the possession of people who actually do need those clothes, and who will put them to good use.



Unfortunately, that is no longer the case. 



<h2 class="wp-block-heading" id="h-fast-fashion-donated-clothes-disaster">Fast fashion + donated clothes = disaster</h2>



Since the advent of the fast fashion industry, there is a constant stream of trendy, affordable clothing available to anyone with the click of a mouse. 



This abundance diminishes the demand for second-hand clothes, as people choose to buy new items instead.



Given that real clothing prices have decreased and real incomes have risen (when adjusting for inflation), people can purchase more clothing for the same amount of money compared to 30 years ago.



Today, the amount of donated clothes continues to grow exponentially, but there are not nearly enough people in the world who actually want to take possession of those donations. 



The resulting imbalance between supply and demand in the second-hand clothing market has caused enormous, unforeseen <a href="https://www.earth.com/news/electronic-waste-is-growing-five-times-faster-than-recycling/" target="_blank" rel="noreferrer noopener">environmental problems</a>, impacting every corner of the planet.



A new study, published in the journal Nature Cities, has brought to light some shocking revelations about the destiny of our donated garments.



<h2 class="wp-block-heading" id="h-unfortunate-fate-of-donated-clothes">Unfortunate fate of donated clothes</h2>



Researchers have been diligently following the trail of donated clothes and textiles across several western cities. 



The findings are quite disturbing. In most cities, spanning from Melbourne to Manchester to Manhattan, donated <a href="https://www.earth.com/news/fashion-industrys-plastic-waste-is-a-major-environmental-threat/" target="_blank" rel="noreferrer noopener">textiles</a> are either exported or dumped as waste.



It's alarming to consider that the weight of global textile waste each year is 92 million tons, a number that could see a scary doubling by 2030.



<h2 class="wp-block-heading" id="h-crucial-role-of-charity-shops">Crucial role of charity shops</h2>



Charity shops do an admirable job of handling a large volume of used and donated clothes. However, they face a <a href="https://www.earth.com/news/fast-fashion-toll-environment/" target="_blank" rel="noreferrer noopener">complex predicament</a>. 



Quite a few of the donations they receive are of poor quality, reducing the financial benefit of managing them locally. 



So, how do these charities adapt? They trade valuable items and discard or export the remainder.



An interesting case in point is Melbourne, where charities export high-quality, often vintage, second-hand clothes to Europe. 



This results in the city's independent resale businesses importing similar clothing back from Europe or the United States.



<h2 class="wp-block-heading" id="h-challenges-of-high-volume-and-low-quality">Challenges of high volume and low quality</h2>



Over the past 15 to 20 years, charities and collectors have reported a concerning decrease in the quality of the garments they receive, which negatively impacts their resale potential.



According to Dr. Yassie Samie of <a href="https://www.rmit.edu.au" target="_blank" rel="noreferrer noopener">RMIT University</a> in Melbourne, local governments and charities need a stronger and more efficient collaboration to manage textile waste.



"We're used to charities doing the heavy lifting, but they've been unable to fully handle the volume of donated clothes for a long time now," said Dr. Samie.



"Charities are driven by social welfare values and need to raise funds for their programs. However, their operations are ill-equipped to deal with the volume of used textiles that need to be reused and recycled."



Local government cooperation is essential in this regard, and Samie suggests that charities explore other business models, such as swapping and repair centers.



<h2 class="wp-block-heading" id="h-export-of-donated-clothes">Export of donated clothes</h2>



Overconsumption and oversupply are the main culprits behind the cities' textile waste crisis. These lead to the export of between 33% (Australia) and 97% (Norway) of donated clothes.



It's important to note that most local governments in the cities studied do not get involved in textile waste beyond providing public spaces and licenses for charity bins and commercial resellers. 



In fact, in cities like Melbourne, local governments send discarded textiles directly to landfill, instead of diverting them to recycling or reuse facilities, or other employing other, local alternatives.



<h2 class="wp-block-heading" id="h-need-for-systemic-change">Need for systemic change</h2>



Dr. Samie noted that systemic change is vital to address the issue of textile waste. She emphasizes the importance of promoting local <a href="https://www.earth.com/news/eco-friendly-vegan-leather-could-transform-the-fashion-industry/" target="_blank" rel="noreferrer noopener">alternatives</a> to fast fashion, including reselling, swapping, and repairing.



"Sustainable fashion initiatives, like second-hand retailers, struggle to compete with fashion brands' big marketing budgets and convenient locations," said Dr. Samie.



"Fast fashion alternatives exist but they are under-promoted, despite their potential to significantly reduce cities' textile waste."



<h2 class="wp-block-heading" id="h-hidden-cost-of-donated-clothes">Hidden cost of donated clothes</h2>



The exportation of donated clothes presents another layer of complexity in the textile waste conundrum. 



While sending garments abroad might appear as a practical solution for local waste management challenges, it offloads the environmental and social costs onto less-regulated markets.



These exported textiles often end up in countries with weak waste management infrastructures, where they can accumulate in landfills, contributing to pollution and resource strain. 



Moreover, the influx of cheap, second-hand clothing can undermine local textile industries, impacting the livelihoods of workers who depend on traditional garment production.



Relying on exports as an easy fix not only perpetuates global inequalities but also stalls the necessary advancements in sustainable local solutions.



<h2 class="wp-block-heading" id="h-approaches-to-mitigating-waste">Approaches to mitigating waste</h2>



Transformative approaches to addressing textile waste are beginning to emerge, albeit at varying scales of impact. 



Some forward-thinking cities and organizations have started to implement circular economy strategies, focusing on keeping resources in use for as long as possible through upcycling, recycling, and the utilization of biodegradable materials. 



Collaborations between fashion brands, municipalities, and environmental organizations have led to the establishment of community repair cafes and textile recycling hubs. 



These initiatives not only reduce waste but also educate the public on the value of sustainable practices.



A multi-faceted approach incorporating education, policy change, and grassroots involvement is critical for creating lasting change. 



By promoting a culture of sustainability, cities can turn the tide on textile waste and lead the way towards a more environmentally responsible future.



<h2 class="wp-block-heading" id="h-fashion-advertising-ban">Fashion advertising ban</h2>



The study's authors propose a ban on <a href="https://www.earth.com/news/fast-fashion-carbon-footprint/" target="_blank" rel="noreferrer noopener">fashion</a> advertising in cities to make room for promoting more sustainable alternatives to donating clothes. 



Recently, France introduced a ban on advertising ultra-fast fashion. Dr. Samie supports such regulations and would like to collaborate with local governments to find better uses for discarded textiles.



Ultimately, the study sheds light on the urgent need for smarter methods of managing textile waste.



As the global textile waste burden continues to grow, each one of us must take responsibility for our shopping habits and make more sustainable choices. 



The study is published in the journal <a href="https://www.nature.com/articles/s44284-024-00140-7" target="_blank" rel="noreferrer noopener">Nature Cities</a>.



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The dark side of donating clothes to charity

The next time you clean out your closet and happily...

Over the past 20 years, scientists have observed a subtle but widespread shift in the color of our oceans. While these changes might not be noticeable during a day at the beach, you can easily see them from airplanes and satellites in space.



This is happening on a massive, global scale, signaling to anyone paying attention that significant transformations are taking place beneath the surface of our seas.



<h2 class="wp-block-heading" id="h-sounding-alarm-bells">Sounding alarm bells</h2>



Stephanie Dutkiewicz, a senior research scientist at <a href="https://www.mit.edu" target="_blank" rel="noreferrer noopener">MIT</a>, has been studying this phenomenon closely. She's part of a team that's raising concerns about what these color changes mean for the health of our planet.



"We hope people take this seriously," says Dutkiewicz. "It's not only models predicting these changes; we can now see them happening, and the ocean is changing."



In a study published in Nature, researchers from the <a href="https://noc.ac.uk/" target="_blank" rel="noreferrer noopener">National Oceanography Center</a> in the UK and other institutions revealed that more than half of the world's oceans have experienced a shift in color. 



They found that these changes can't be chalked up to natural variations alone -- they're likely a result of human-driven climate change.



<h2 class="wp-block-heading" id="h-greener-ocean-color-near-the-equator">Greener ocean color near the equator</h2>



Tropical regions near the equator have become noticeably greener over time. This isn't just a visual tweak; it's a sign that the ecosystems within the surface ocean are changing. 



The color of the ocean is influenced by what's in its upper layers, especially tiny organisms like phytoplankton.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/11/earth-ocean-waters_south-carolina-coast_landsat8_green-color_nasa-1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/11/earth-ocean-waters_south-carolina-coast_landsat8_green-color_nasa-1s.webp" alt="Winyah Bay (roughly midway between Charleston and Myrtle Beach, South Carolina) receives input from a number of blackwater rivers whose dark, reddish hues arise from the absorptive properties of colored dissolved organic matter (CDOM) which some have likened to nature's tea. Credit: NASA" class="wp-image-1951739"/></a><figcaption class="wp-element-caption">Winyah Bay (roughly midway between Charleston and Myrtle Beach, South Carolina) receives input from a number of blackwater rivers whose dark, reddish hues arise from the absorptive properties of colored dissolved organic matter (CDOM) which some have likened to nature's tea. Credit: NASA</figcaption></figure>



<a href="https://www.earth.com/news/invisible-forest-of-phytoplankton-thrives-in-a-warming-climate/" target="_blank" rel="noreferrer noopener">Phytoplankton</a> are microscopic, plant-like creatures that contain chlorophyll, giving them their green tint. They're a cornerstone of the marine food web and play a key role in capturing carbon dioxide from the atmosphere. 



Shifts in their populations can have ripple effects throughout marine ecosystems and impact the global carbon cycle.



<h2 class="wp-block-heading" id="h-blame-the-humans-of-course">Blame the humans, of course</h2>



Lead author B.B. Cael from the National Oceanography Center points out that this isn't a random occurrence. 



"This evidence shows how human activities are affecting life on Earth on a vast scale," he says. "It's another way humans are impacting the biosphere, affecting even the most extensive environments on the planet."



Traditionally, scientists have monitored <a href="https://www.earth.com/news/marine-algae-genes-chlorophyll-boost-crop-yields-land-plants/" target="_blank" rel="noreferrer noopener">chlorophyll levels</a> to keep tabs on phytoplankton populations. But tracking changes using chlorophyll alone can take decades because of natural year-to-year fluctuations. 



Back in 2019, Dutkiewicz and her colleagues suggested that looking at the full spectrum of ocean colors could reveal climate change-driven trends more quickly. They estimated that such changes could become apparent within 20 years.



<h2 class="wp-block-heading" id="h-satellites-spot-the-difference">Satellites spot the difference</h2>



The team analyzed data from the Moderate Resolution Imaging Spectroradiometer (<a href="https://modis.gsfc.nasa.gov/" target="_blank" rel="noreferrer noopener">MODIS</a>) on NASA's Aqua satellite. 



Since 2002, this instrument has been observing ocean color across seven visible wavelengths. Their analysis showed a clear trend over two decades, lining up with what their models had predicted.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/11/earth-ocean-waters_new-zealand-coast_modis-satellite_nasa_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/11/earth-ocean-waters_new-zealand-coast_modis-satellite_nasa_1s.webp" alt="Phytoplankton blooms are evident throughout the South Pacific Ocean with sediment re-suspended from the ocean floor by waves and tides along much of the New Zealand coastline. Credit: MODIS/NASA" class="wp-image-1951737"/></a><figcaption class="wp-element-caption">Phytoplankton blooms are evident throughout the South Pacific Ocean with sediment re-suspended from the ocean floor by waves and tides along much of the New Zealand coastline. Credit: MODIS/NASA</figcaption></figure>



Cael explains that these trends match up with the effects of <a href="https://www.earth.com/news/human-induced-changes-in-ocean-salinity-threaten-biodiversity-and-marine-ecosystems/" target="_blank" rel="noreferrer noopener">human-induced</a> climate change, not just random shifts in the Earth's system. 



This means the changes in ocean color are a direct response to how we're altering the planet's climate.



<h2 class="wp-block-heading" id="h-why-does-ocean-color-matter">Why does ocean color matter?</h2>



So, what's the big deal about the ocean turning a bit greener? It suggests that the types of <a href="https://www.earth.com/news/plankton-at-risk-global-warming-threatens-the-oceans-lifeline/" target="_blank" rel="noreferrer noopener">phytoplankton communities</a> are changing. 



Different phytoplankton have varying abilities to capture carbon and support marine life. Changes in these communities can affect the entire food web, from tiny marine organisms all the way up to fish and whales.



Dutkiewicz emphasizes that these shifts will impact all creatures that rely on plankton for food. 



"Different types of plankton influence how much carbon the ocean can absorb," she notes, highlighting the broader implications for climate regulation.



<h2 class="wp-block-heading" id="h-visible-sign-of-invisible-changes">Visible sign of invisible changes</h2>



This research shines a light on the far-reaching effects of climate change on <a href="https://www.earth.com/news/overfishing-and-habitat-degradation-have-devastated-marine-ecosystems/" target="_blank" rel="noreferrer noopener">marine ecosystems</a>. Monitoring ocean color offers a tangible way to detect and understand these shifts. 



The findings are a stark reminder of the significant impact human activities have on Earth's complex systems.



"The evidence is clear: human activities are altering the very color of our oceans," says Cael. This isn't just about aesthetics; it's about the intricate balance of marine life that keeps our planet healthy.



<h2 class="wp-block-heading" id="h-what-can-we-do-to-help">What can we do to help?</h2>



This shift in the ocean's hue is more than just a scientific curiosity -- it's a call to action. 



Scientists are continuing to study these trends to grasp the full impact on marine ecosystems and the global climate.



By keeping a closer eye on the full spectrum of ocean colors, researchers hope to gain a quicker understanding of how climate change is affecting the oceans.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/11/earth-ocean-waters_lake-erie_great-lakes_modis_nasa_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/11/earth-ocean-waters_lake-erie_great-lakes_modis_nasa_1s.webp" alt="At the end of winter the ice is nearly all gone from Lake Erie, and growing phytoplankton populations are revealed mingling with suspended sediments in this relatively shallow Great Lake. Credit: MODIS/NASA" class="wp-image-1951741"/></a><figcaption class="wp-element-caption">At the end of winter the ice is nearly all gone from Lake Erie, and growing phytoplankton populations are revealed mingling with suspended sediments in this relatively shallow Great Lake. Credit: MODIS/NASA</figcaption></figure>



This could lead to faster responses and more effective strategies to lessen the impacts.



As we face the realities of climate change, understanding what's happening in our oceans is crucial. Changes in the oceans can affect weather patterns, sea levels, and biodiversity on a global scale.



Addressing these challenges isn't something scientists can do alone. It requires all of us to pitch in -- from reducing our carbon footprints to supporting policies that protect marine environments. 



Every action, no matter how small, contributes to the bigger picture.



<h2 class="wp-block-heading" id="h-ocean-color-climate-change-and-human-health">Ocean color, climate change, and human health</h2>



To sum it all up, scientists have noticed that over the past 20 years, more than half of the world's oceans have subtly changed color. 



Stephanie Dutkiewicz points out that this shift matches what climate change models have been predicting. 



The color change is linked to alterations in phytoplankton communities -- tiny, plant-like organisms with chlorophyll that give the ocean its green tint. 



These little guys are essential for marine life and play a big role in capturing carbon dioxide from the atmosphere.



By analyzing satellite data, researchers found that these changes aren't just natural fluctuations; they're consistent with human-driven climate change. 



The shift in ocean color suggests significant changes in marine ecosystems, which could impact the entire food web -- from microscopic organisms to large marine animals. 



This finding highlights how human activities are affecting the planet in profound ways, even down to changing the very color of our oceans. It's a clear sign that we need to take climate change seriously and start making changes now.



The full study was published in the journal <a href="https://www.nature.com/articles/s41586-023-06321-z" target="_blank" rel="noreferrer noopener">Nature</a>.



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Earth's oceans are rapidly changing colors, and humans are directly to blame

Over the past 20 years, scientists have observed a subtle...

Whether you are an ardent lover of fried foods or an environmental enthusiast, the exciting news is that air fryers generate considerably less indoor pollution than other cooking methodologies.



People spend most of their time indoors, and the quality of the air they breathe within their homes can have critical effects on their health. Cooking emissions are a major contributor to air pollution in the home as they include both particulate and gaseous substances.



Indoor air pollution is a growing concern as the pollutants have been associated with negative health conditions such as cancer, respiratory infections, asthma and lung diseases, and more.



However, as our understanding of this alarming situation deepens, we encounter a glimmer of hope in cleaner cooking technologies.



<h2 class="wp-block-heading" id="h-discovering-the-air-fryer-advantage">Discovering the air fryer advantage</h2>



To investigate the environmental impacts of various cooking methods, a team of researchers sought to create a comprehensive study that is both laboratory-precise and reflective of actual, everyday kitchen conditions.



For this, they took over the dining hall kitchen at the esteemed <a href="https://www.birmingham.ac.uk/schools/gees" target="_blank" rel="noreferrer noopener">University of Birmingham’s School of Geography, Earth and Environmental Sciences</a>.



It is in the heart of this bustling culinary landscape that they chose to test the emissions produced by five common cooking methodologies and compare them with those produced when cooking with an air fryer.



<h2 class="wp-block-heading" id="h-the-air-fryer-experiment">The air fryer experiment</h2>



Armed with chicken breasts and a suite of cooking gear, the team embarked on a series of experiments involving pan frying, stir-frying, boiling, deep-fat frying, and, of course, air frying. 



They used state-of-the-art laboratory equipment to measure the levels of particulate matter and <a href="https://www.earth.com/news/common-household-products-expose-people-to-dangerous-chemicals/" target="_blank" rel="noreferrer noopener">Volatile Organic Compounds</a> (VOCs) emitted when using each of the methods.



It turns out that particulate matter levels, represented as peak concentrations in micrograms per cubic metre of air, varied significantly across the different cooking methods. 



Frying pans took the lead with 92.9, followed by stir-frying with 26.7, deep frying with 7.7, and boiling at 0.7. In comparison, air fryers produced a minimal 0.6 micrograms per cubic meter.



When it came to VOCs, the story was much the same. Each cooking method was measured in parts per billion, or ppb, with standard frying pan methods producing a worrisome 260 ppb.



Stir frying produced 110 ppb, deep frying 230 ppb, and boiling 30 ppb. Once again, air fryers emerged as the environmental victor with a mere 20 ppb.



<h2 class="wp-block-heading" id="h-the-aftermath-of-cooking">The aftermath of cooking</h2>



Professor Christian Pfrang, the lead researcher of the study, emphasized that various factors - like the quantity of oil used and the stovetop temperature - could impact the <a href="https://www.earth.com/news/cooking-cleaning-indoor-pollution/" target="_blank" rel="noreferrer noopener">pollution</a> levels during cooking.



He stressed that improvising kitchen ventilation via opening windows or using extractor fans reduces the spread of polluting particles and mitigates personal exposure.



Interestingly, the study also took into account the residual pollution left long after the cooking process had ended. 



Even an hour post-cooking, the kitchen housed substantially higher levels of <a href="https://www.earth.com/news/specific-air-pollutants-linked-to-asthma-attacks-in-urban-children/" target="_blank" rel="noreferrer noopener">pollutants</a>, despite each cooking process lasting only approximately 10 minutes.



Professor Pfrang added that, since particles linger in the air long after cooking, continuing ventilation or leaving extractor fans on will help prevent the build-up of indoor pollution, thereby reducing the potential spread throughout the house.



The University of Birmingham's study is a reflection of the environmental advantage that air fryers deliver. They bring the joy of fried foods to the table while minimizing our environmental footprint - one chicken breast at a time.



<h2 class="wp-block-heading" id="h-broader-implications-for-health-and-sustainability">Broader implications for health and sustainability</h2>



The findings of this study extend beyond the kitchen, and highlight a critical intersection between daily habits and broader environmental and health concerns.



Indoor air pollution is a major contributor to respiratory issues, cardiovascular problems, and even cognitive decline, highlighting the importance of using <a href="https://www.earth.com/news/clean-cooking-could-save-half-a-million-lives-each-year/" target="_blank" rel="noreferrer noopener">cleaner cooking methods</a>.



By reducing particulate matter and VOC emissions, air fryers not only support personal well-being but also contribute to a more sustainable lifestyle by cutting energy consumption compared to traditional ovens or stovetops.



For environmentally conscious households, incorporating air fryers into daily routines offers a small yet impactful step toward reducing overall carbon footprints. 



As the demand for healthier and more sustainable living grows, air fryers serve as a practical and accessible innovation that aligns convenience with eco-conscious choices.



The full study was published in the journal <a href="https://onlinelibrary.wiley.com/doi/10.1155/2024/6355613" target="_blank" rel="noreferrer noopener">Indoor Air</a>.



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Air fryers crowned as the least polluting cooking method

Whether you are an ardent lover of fried foods or...

For those observing Arctic climate change from a distance, the picture often seems straightforward - warming is a detrimental process that leads to melting ice caps and rising sea levels. However, as is often the case, the reality is far more complex.



A group of Japanese researchers studying the intricacies of the Arctic have provided further proof of this complexity.



When considering the Arctic climate, one truth emerges: things are heating up, and fast. The region is warming at a rate of two to four times faster than the global average. This raises a critical question - what is driving the rapid escalation in Arctic temperatures?



This phenomenon, known as <a href="https://www.earth.com/news/arctic-amplification-is-destabilizing-the-delicate-balance-of-the-ecosystem/" target="_blank" rel="noreferrer noopener">Arctic amplification</a>, is not only reshaping the local environment but is also influencing global climate systems.



Unraveling its causes requires looking beyond ice and temperatures to less obvious factors, like Arctic dust.



<h2 class="wp-block-heading" id="h-arctic-dust-an-unexpected-player">Arctic dust: An unexpected player</h2>



In a world where we often view dust as little more than an inconvenience, researchers have found that it plays a significant role in Arctic warming.



According to the results of a recent study, dust (specifically that originating from snow- and ice-free areas of the Arctic) has been linked to the accelerated warming of the region.



In the prevalent understanding, it's commonly believed that increases in <a href="https://www.earth.com/news/arctic-temperatures-rise-when-plants-stop-breathing/" target="_blank" rel="noreferrer noopener">Arctic temperatures</a> are associated with more liquid droplets and fewer ice crystals populating the region's clouds.



This combination is thought to give rise to thicker, longer-lasting clouds that have a higher likelihood of reflecting sunlight, thereby potentially cooling the region during summer. This is what is generally known as temperature feedback.



<h2 class="wp-block-heading" id="h-expansion-of-snow-and-ice-free-areas">Expansion of snow- and ice-free areas</h2>



However, the Japanese researchers paint a different picture. Their study has shown that the warming Arctic is associated with an expansion of snow- and ice-free areas.



This increase leads to a concomitant rise in dust emissions, which encourage the formation of ice crystals in the clouds. 



Thinner, less lasting clouds are one consequence of the ice crystals in the clouds, meaning that less sunlight is reflected and the Arctic becomes warmer during summer. The researchers have termed this the "emission feedback."



<h2 class="wp-block-heading" id="h-the-voice-of-the-researchers">The voice of the researchers</h2>



The lead author of the study, Professor Hitoshi Matsui of <a href="https://en.nagoya-u.ac.jp/" target="_blank" rel="noreferrer noopener">Nagoya University</a>, provides valuable insight into this intricate phenomenon.



"Increasing amounts of dust due to <a href="https://www.earth.com/news/arctic-warming-permafrost-melt-devastating-role-accelerating-global-climate-change/" target="_blank" rel="noreferrer noopener">Arctic warming</a> may cause the opposite phenomenon of the conventional understanding of ice crystal changes," he remarked.



"Our previous study found that a large amount of Arctic dust is distributed in the lower troposphere (below about 3 km in altitude) over the region in summer and early fall, with the dust acting as a very efficient nucleus for ice formation in clouds at this altitude during the season."



<h2 class="wp-block-heading" id="h-looking-back-looking-ahead">Looking back, looking ahead</h2>



For their investigation, Professor Matsui, Dr. Kei Kawai, and their colleagues from the National Institute of Polar Research and Hokkaido University, utilized the CAM-ATRAS global aerosol-climate model. 



They examined how dust emissions from the Arctic land surface have changed over a span of forty years, from 1981 to 2020.



The findings were telling - dust emissions rose by 20% in this period, as the Arctic continued to warm.



<h2 class="wp-block-heading" id="h-arctic-dust-and-ice-crystal-formation">Arctic dust and ice crystal formation</h2>



The increase in Arctic dust emissions bolsters ice nucleation in clouds in the lower troposphere, undermining the efficiency of clouds to carry more liquid droplets and fewer ice crystals as the Arctic warms. 



The researchers found that in 30% of the region annually, and 70% in summer, the growth in ice crystal formation due to increased dust outweighs the reduction brought about by temperature feedback.



"Most <a href="https://www.earth.com/news/weather-in-dry-regions-isnt-behaving-as-climate-models-predict/" target="_blank" rel="noreferrer noopener">climate models</a> have not considered the effects of dust from the Arctic land surface. Our research suggests that the counterbalancing temperature and emission feedbacks should be considered to improve the accuracy of climate change predictions in the Arctic," noted Matsui.



So, as we continue to grapple with the realities of <a href="https://www.earth.com/news/climate-change-earth-energy-imbalance-temperature-rise/" target="_blank" rel="noreferrer noopener">climate change</a>, these insights underline the need to recognize the nuanced relationship between Arctic warming and Arctic dust.



It's a reminder of how interconnected our world is, and how a deeper understanding of these connections can help us make better predictions and, perhaps, better decisions for our planet's future.



The full study was published in the journal <a href="https://www.nature.com/articles/s41612-024-00811-1" target="_blank" rel="noreferrer noopener">npj Climate and Atmospheric Science</a>.



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Arctic dust plays a hidden role in accelerating warming

For those observing Arctic climate change from a distance, the...

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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.esa.int/">European Space Agency</a> features Kainji Lake, a reservoir on the Niger River.



In 1968, Kainji Lake was created by the construction of the Kainji Dam. The Niger River, the third longest in Africa, enters the lake in the north.&nbsp;



According to <a href="https://www.earth.com/news/rivers-in-the-american-west-are-a-lifesaving-resource-for-birds/">ESA</a>, the creation of the lake submerged Foge Island and the town of Bussa and permanently flooded other riverine settlements, leaving around 50,000 people displaced.&nbsp;



Large parts of Foge Island are temporarily exposed during low water tides, and the land is often used by migrating fishermen. Kainji Dam is a dam across the Niger River in Niger State of Central Nigeria. 



Wild mammals occur at relatively low densities due to illegal hunting. Lake Kainji has suffered a dramatic decline as a fishery due to the high numbers of artisanal and subsistence fisherfolk using the lake. It has been suggested that a period of closure, together with controlled fishing rights may help improve fish stocks.



Kainji Lake National Park is the oldest of its kind in Nigeria. The park contains three distinct areas: a part of the Kainji Lake, the Borgu Game Reserve to the west of the lake, and the Zugurma Game Reserve to the southeast. The park is home to around 65 mammal species, 350 bird species, and 30 species of reptiles and amphibians. 



Video/ Image Credit: European Space Agency&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.

Kainji Lake in north central Nigeria

[sendtonews key="iuA5mpp3jv-1641775-12187" type="single"] Today’s Video of the Day from the...

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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



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



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Designing crops that can beat the heat

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