he mata mata turtle is apparently fed on a diet of fish in captivity. But in the wild it is a carnivorous predator that also devours the small invertebrates which share its habitat. The creature uses a snout which is shaped like a snorkel to breathe and it lurks beneath the water – lying in wait to surprise its prey. Photo Credit: Unsplash / Jakub Kapusnak

They're Also Prey

Today's Image of the Day from NASA Earth Observatory features the Ruki River in the Democratic Republic of the Congo (DRC). It is a tributary of the Congo River, one of the largest rivers in the world by discharge and depth.&nbsp;



The Ruki River, previously known as the Busira, merges with the Momboyo River near the town of Basankusu to become the Lulonga River, which eventually flows into the Congo River at the town of Lisala.



<h2 class="wp-block-heading" id="h-dark-waters-of-the-ruki-river">Dark waters of the Ruki River</h2>



"If the appearance of the muddy Amazon River evokes a coffee cut with cream, the Ruki River, coursing gently through the Congo Basin, is like a dark tea," said <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.



"On its slow path through mostly untouched lowland rainforest in the Democratic Republic of Congo (DRC), the water leaches organic material from vegetation, prompting some researchers to think it is one of the darkest blackwater rivers on Earth."



According to NASA, scientists are finding that the dissolved material in this distinctive water offers clues about the carbon cycle of tropical forests.



<h2 class="wp-block-heading" id="h-organic-compounds-in-the-ruki-river">Organic compounds in the Ruki River</h2>



In a recent study, researchers measured the chemical <a href="https://www.earth.com/news/warmer-rivers-keep-antimicrobial-resistant-genes-at-bay/" target="_blank" rel="noreferrer noopener">composition</a> and flow of the Ruki for the first time.&nbsp;



"The study reported that, as the water color suggests, the Ruki is rich in dissolved organic carbon compounds," said NASA.



"It contains four times as much organic carbon as the Congo River and 1.5 times as much as the Rio Negro, the world’s largest blackwater river and a major tributary of the Amazon."



Due to this heavy carbon load, the researchers concluded that tropical forests like those around the Ruki might not accumulate quite as much carbon as we once thought.



<h2 class="wp-block-heading" id="h-significance-of-the-river">Significance of the river </h2>



The river is vital for the livelihoods of local communities. <a href="https://www.earth.com/news/fishing-communities-cooperate-to-survive-climate-change/" target="_blank" rel="noreferrer noopener">Fishing</a> is a crucial activity, with many people depending on it for sustenance and income. The river also supports agriculture along its banks, where communities grow crops.



In many parts of the DRC, <a href="https://www.earth.com/news/rivers-are-warming-up-and-losing-oxygen-faster-than-oceans/" target="_blank" rel="noreferrer noopener">rivers</a> like the Ruki are crucial transportation corridors due to the challenging and often nonexistent road infrastructure. 



The river enables the movement of people and goods, facilitating trade and access to markets, health care, and education.



<h2 class="wp-block-heading" id="h-wildlife-of-the-ruki-river">Wildlife of the Ruki River </h2>



The region around the Ruki River is home to diverse wildlife. It is part of the Congo Basin, the second-largest tropical rainforest area in the world, which is a critical habitat for endangered species.



Among the most notable species are elephants and <a href="https://www.earth.com/news/study-mean-chimpanzees-fare-better-in-life-than-nice-ones/" target="_blank" rel="noreferrer noopener">chimpanzees</a>, whose populations thrive in the surrounding forests. Other primates such as bonobos also live in this region, making it a critical area for primate conservation.



The river itself is home to various species of fish that are crucial to local livelihoods. Hippopotamuses and crocodiles are often found in the water.



Birds like kingfishers, herons, and egrets frequent the riverbanks - making it a haven for birdwatchers.



The Ruki River also supports several species of reptiles and amphibians - some of which are unique to the region.



<h2 class="wp-block-heading" id="h-managing-the-river-s-resources">Managing the river's resources </h2>



The region faces several challenges, including <a href="https://www.earth.com/news/global-deforestation-directly-linked-to-atmospheric-mercury-emissions/" target="_blank" rel="noreferrer noopener">deforestation</a>, overfishing, and environmental degradation, which threaten its ecological balance and the livelihoods of people who depend on it. 



Efforts to manage and conserve the river's resources are vital for sustainable development.



Understanding and protecting the Ruki River and its surroundings are crucial for the DRC's environmental sustainability, economic development, and the well-being of its communities.



<h2 class="wp-block-heading" id="h-landscapes-of-the-drc">Landscapes of the DRC</h2>



The Democratic Republic of Congo (DRC) boasts some of the most diverse and breathtaking landscapes in Africa, reflecting its vast size and ecological richness. Dominated by the Congo Basin, the country is a haven for biodiversity.



Beyond its rainforests, the DRC's landscapes shift dramatically. In the east, the terrain rises into rugged mountains, including the Virunga and Rwenzori ranges, where snow-capped peaks like Mount Stanley pierce the sky. 



This region is also marked by active volcanoes such as Mount Nyiragongo, which harbors one of the world’s largest lava lakes, creating a dramatic and otherworldly spectacle.



To the south and west, the country transitions to expansive savannas with rolling grasslands and scattered trees. These areas contrast sharply with the lushness of the forests, providing vital habitats for species like lions and antelope. 



Rivers like the Ruki are a dominant feature, with the mighty Congo River coursing through the heart of the country. Its tributaries shape the lives of millions.



The image was captured by the OLI (Operational Land Imager) on Landsat 8.



Image Credit: NASA Earth Observatory&nbsp;



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Ruki River in the Democratic Republic of the Congo

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

Today's Image of the Day from the European Space Agency features a brilliant stellar nursery located about 163,000 light-years away.



According to ESA, the image is one of the most photogenic examples of the many stellar nurseries observed by the NASA/ESA Hubble Space Telescope during its 30-year lifetime. 



“The portrait features the giant nebula NGC 2014 and its neighbor NGC 2020 which together form part of a vast star-forming region in the Large Magellanic Cloud, a satellite galaxy of the Milky Way,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



<h2 class="wp-block-heading" id="h-what-is-a-stellar-nursery">What is a stellar nursery?</h2>



Stellar nurseries are regions in space where new stars are <a href="https://www.earth.com/news/baby-stars-release-sneezes-of-gas-and-dust-as-they-develop/" target="_blank" rel="noreferrer noopener">born</a> - often within vast clouds of gas and dust called molecular clouds.&nbsp;



These areas are fascinating because they are cradles of stellar evolution, where gravity causes clumps of gas to collapse, eventually forming protostars.&nbsp;



Over time, the protostars will heat up and start the nuclear fusion process that powers a star.



One of the most well-known stellar nurseries is the Orion Nebula, which is visible to the naked eye and located about 1,350 light-years from Earth.&nbsp;



<h2 class="wp-block-heading" id="h-dynamic-nature-of-a-stellar-nursery-nbsp">Dynamic nature of a stellar nursery&nbsp;</h2>



Within these nurseries, the balance between gravity and pressure determines the types of stars that form, from massive, luminous stars to smaller, cooler ones like our Sun.&nbsp;



The environment is incredibly dynamic, with powerful winds from young stars shaping the clouds and triggering the birth of even more stars.



These regions are often illuminated by the light from massive newborn stars - creating stunning, colorful displays. The light reveals the intricate structure of the dust and gas, sculpted by the energy of young stars.&nbsp;



<h2 class="wp-block-heading" id="h-significance-of-stellar-nurseries-nbsp">Significance of stellar nurseries&nbsp;</h2>



Stellar nurseries are essential for understanding the early stages of planetary formation, as protoplanetary disks (the material from which <a href="https://www.earth.com/news/planet-formation-new-insights-mechanics-physics/" target="_blank" rel="noreferrer noopener">planets form</a>) are often found around young stars in these regions.



Stellar nurseries play a crucial role in the ongoing evolution of <a href="https://www.earth.com/news/black-hole-is-starving-its-host-galaxy-of-star-forming-fuel/" target="_blank" rel="noreferrer noopener">galaxies</a>. They are responsible for the continuous birth of new stars that enrich the interstellar medium with heavier elements. This constant recycling of material is key to the development of future generations of stars and planets.&nbsp;



Furthermore, the study of these regions helps astronomers understand the fundamental processes that govern the life cycles of stars and the overall dynamics of the universe.



<h2 class="wp-block-heading" id="h-the-local-group">The Local Group</h2>



The Local Group is a collection of over 80 galaxies that includes the Milky Way, the Andromeda Galaxy, and the Triangulum Galaxy, along with numerous smaller dwarf galaxies. These galaxies are bound together by gravity and span a region roughly 10 million light-years across.&nbsp;



The <a href="https://www.earth.com/news/milky-ways-thin-disk-is-billions-of-years-older-than-we-thought/" target="_blank" rel="noreferrer noopener">Milky Way</a> and Andromeda are the dominant members, with their respective satellite galaxies orbiting them.&nbsp;



The Local Group is part of a larger structure known as the Virgo Supercluster, and its galaxies are moving toward the gravitational center of the Local Group, contributing to its dynamic nature.&nbsp;



<h2 class="wp-block-heading" id="h-large-magellanic-cloud">Large Magellanic Cloud</h2>



The Large Magellanic Cloud (LMC) is the fourth largest galaxy in the Local Group and can be seen with the naked eye from the Southern Hemisphere.&nbsp;



This irregular dwarf galaxy is home to the Tarantula Nebula, one of the most active star-forming regions in our cosmic neighborhood.&nbsp;



The Large Magellanic Cloud played a key role in astronomical history, particularly when the supernova SN 1987A was observed, providing valuable insights into stellar evolution.&nbsp;



The LMC's interaction with the Milky Way, along with its own companion, the Small Magellanic Cloud, is believed to influence its shape and star formation activity. Its proximity and unique properties make it a crucial object of study for understanding <a href="https://www.earth.com/news/massive-galactic-explosion-provides-clues-about-galaxy-evolution/" target="_blank" rel="noreferrer noopener">galaxy evolution</a>, star formation, and the dynamics of interacting galaxies.



Image Credit: NASA, ESA, and STScI



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Hubble captures a stunning stellar nursery

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

Today's Image of the Day from the European Space Agency features the Southern Ring Nebula, also known as NGC 3132.



The nebula is located about 2,000 light-years away from Earth in the constellation Vela. This remarkably detailed image was created using data from Webb’s Near-Infrared Camera (NIRCam).



The Southern Ring Nebula is one of the more famous examples of planetary nebulae. It is often studied for its beauty and valuable insights into the end stages of stellar evolution.



<h2 class="wp-block-heading" id="h-stars-power-the-southern-ring-nebula-nbsp">Stars power the Southern Ring Nebula&nbsp;</h2>



The <a href="https://www.earth.com/news/dragons-egg-nebula-is-a-truly-stunning-sight-to-behold/" target="_blank" rel="noreferrer noopener">nebula</a> is powered by two central stars in a binary system. The brighter star is actually a less massive companion. The fainter, dimmer star is the dying, hot central star that has shed its outer layers to form the nebula. 



The dimmer star is a white dwarf and is responsible for the ionization of the gas in the nebula, causing it to glow.



“The bright star at the center of NGC 3132, while prominent when viewed by NASA’s Webb Telescope in near-infrared light, plays a supporting role in sculpting the surrounding nebula," noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



"A second star, barely visible at lower left along one of the bright star’s diffraction spikes, is the nebula’s source. It has ejected at least eight layers of gas and dust over thousands of years.” 



“But the bright central star visible here has helped ‘stir’ the pot, changing the shape of this planetary nebula’s highly intricate rings by creating turbulence." 



ESA explained that the pair of stars are locked in a tight orbit, which leads the dimmer star to spray ejected material in a range of directions as they orbit one another, resulting in these jagged rings.



<h2 class="wp-block-heading" id="h-key-characteristics-of-the-southern-ring-nebula-nbsp">Key characteristics of the Southern Ring Nebula&nbsp;</h2>



The Southern Ring Nebula displays a complex structure with multiple layers of gas and dust. 



The outer shells of the nebula consist of hydrogen and other elements that were ejected from the dying star in previous stages of its <a href="https://www.earth.com/news/young-stellar-objects-observing-the-early-lives-of-stars/" target="_blank" rel="noreferrer noopener">evolution</a>. These layers are illuminated by ultraviolet radiation from the central white dwarf.



<h3 class="wp-block-heading" id="h-coloration">Coloration</h3>



The colors seen in the Southern Ring Nebula come from the different gases present. For example, hydrogen emits red light, while oxygen emits blue-green light. 



These colors help astronomers study the composition and dynamics of the nebula.



<h3 class="wp-block-heading" id="h-size-and-shape">Size and shape</h3>



The nebula spans about half a light-year in diameter. Its intricate, symmetrical structure provides valuable insights into the late stages of <a href="https://www.earth.com/news/star-collapse-black-hole-instead-of-supernova-vanish-from-sky/" target="_blank" rel="noreferrer noopener">stellar evolution</a>, especially the processes involved in the shedding of outer layers by dying stars.



<h2 class="wp-block-heading" id="h-spotlights-from-the-bright-star">Spotlights from the bright star</h2>



ESA noted that hundreds of straight, brightly-lit lines pierce through the rings of gas and dust. “These ‘spotlights’ emanate from the bright star and stream through holes in the nebula like sunlight through gaps in a cloud."



“But not all of the starlight can escape. The density of the central region, set off in teal, is reflected by how transparent or opaque it is. Areas that are a deeper teal indicate that the gas and dust are denser - and light is unable to break free.”



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



According to ESA, this is not only a crisp image of a planetary nebula - it also shows us objects in the vast distances of space behind it. The transparent red sections of the nebula are filled with distant <a href="https://www.earth.com/news/galaxies-have-hearts-and-lungs-that-help-them-live-longer/" target="_blank" rel="noreferrer noopener">galaxies</a>.



“Look for the bright angled line at the upper left. It is not starlight - it is a faraway galaxy seen edge-on. Distant spirals, of many shapes and colors, also dot the scene. Those that are farthest away - or very dusty - are small and red,” said ESA.



<h2 class="wp-block-heading" id="h-the-constellation-vela-nbsp">The constellation Vela&nbsp;</h2>



Vela is a southern constellation that represents the sails of a ship. It was once part of a larger constellation called Argo Navis, which depicted the ship of the mythological hero Jason and the Argonauts. 



In the 18th century, Argo Navis was divided into three separate constellations: Vela (the sails), Carina (the keel), and Puppis (the stern).



Vela is notable for containing several interesting astronomical features. One of its most prominent stars is Gamma Velorum, also known as Suhail or Regor, which is a bright, massive star system consisting of multiple stars.&nbsp;



The constellation also hosts the Vela Supernova Remnant, the remains of a <a href="https://www.earth.com/news/supernova-explosions-could-damage-distant-planets/" target="_blank" rel="noreferrer noopener">supernova</a> explosion that occurred about 11,000 years ago. 



This remnant is associated with the Vela Pulsar, a neutron star that formed during the supernova explosion, which is one of the brightest pulsars in the sky.



Vela is best observed in the Southern Hemisphere, where it can be seen in the summer months. Its position along the Milky Way makes it a popular region for both amateur and professional astronomers to explore.



Image Credit: NASA, ESA, CSA, STScI



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Southern Ring Nebula in the constellation Vela 

Today's Image of the Day from the European Space Agency features NGC 6744 - a large, barred spiral galaxy located approximately 30 million light-years away in the constellation Pavo.&nbsp;



The galaxy is often considered a close analog to the <a href="https://www.earth.com/news/uma3-u1-faintest-star-system-found-orbiting-milky-way-galaxy/" target="_blank" rel="noreferrer noopener">Milky Way</a> due to its similar structure and size, spanning about 175,000 light-years across.&nbsp;



<h2 class="wp-block-heading" id="h-euclid-space-mission-nbsp">Euclid space mission&nbsp;</h2>



The image was captured by the <a href="https://www.esa.int/Science_Exploration/Space_Science/Euclid" target="_blank" rel="noreferrer noopener">Euclid</a> space telescope. NGC 6744 stands out as a prime example of the galaxies currently forming the majority of stars in the nearby universe, making it an ideal subject for study with the Euclid mission.&nbsp;



Euclid’s extensive field-of-view allows it to capture the entire galaxy, showcasing not only its large-scale spiral structure but also revealing intricate details on smaller scales across various wavelengths. These details include feather-like dust lanes, known as “spurs,” emerging from the spiral arms.



<h2 class="wp-block-heading" id="h-star-formation-in-ngc-6744">Star formation in NGC 6744</h2>



Euclid's observations enable scientists to count individual stars within NGC 6744, trace the distribution of stars and dust throughout the galaxy, and map the dust associated with the gas that fuels the development of new stars. 



<a href="https://www.earth.com/news/baby-stars-release-sneezes-of-gas-and-dust-as-they-develop/" target="_blank" rel="noreferrer noopener">Star formation</a> is a key process in the growth of galaxies, making these studies crucial for understanding galaxy evolution.



Researchers are utilizing Euclid’s data to explore the relationship between dust, gas, and star formation; to map the distribution of different stellar populations and identify regions of active star formation; and to investigate the underlying physics of spiral galaxy structures.&nbsp;



Spiral arms play a significant role in star formation by compressing gas, yet the precise mechanisms behind this process are still unclear. The presence of “spurs” along NGC 6744’s spiral arms offers valuable insights into the dynamics of star formation within these structures.



<h2 class="wp-block-heading" id="h-discovering-new-dwarf-galaxies-nbsp">Discovering new dwarf galaxies&nbsp;</h2>



Additionally, Euclid's dataset will help scientists identify clusters of old stars (globular clusters) and discover new dwarf galaxies around NGC 6744. Remarkably, Euclid has already identified a new dwarf satellite galaxy of NGC 6744 - a surprising discovery given that the galaxy has been studied extensively.



With Euclid’s detailed observations, scientists are gaining a deeper understanding of the processes shaping galaxies, providing essential clues to the evolution and appearance of the <a href="https://www.earth.com/news/universes-expansion-rate-hubble-tension-puzzles-astronomers/" target="_blank" rel="noreferrer noopener">universe</a>.



<h2 class="wp-block-heading" id="h-more-about-ngc-6744">More about NGC 6744</h2>



NGC 6744's disk is rich in star-forming regions and contains numerous young, bright blue stars. The galaxy's nucleus is slightly elongated and has a bar structure, which influences the motion of the stars and gas within it.&nbsp;



The spiral arms of NGC 6744 are well-defined and extend outward, wrapping around the central bar. Additionally, NGC 6744 has a smaller companion galaxy, NGC 6744A, which is interacting with it, adding to the complexity and interest of this distant system.&nbsp;



<h2 class="wp-block-heading" id="h-spiral-galaxies">Spiral galaxies</h2>



<a href="https://www.earth.com/news/the-mesmerizing-beauty-of-spiral-galaxies/" target="_blank" rel="noreferrer noopener">Spiral galaxies</a> are one of the most common types of galaxies in the universe, characterized by their distinct, spiral-shaped structure.&nbsp;



The galaxies typically consist of a flat, rotating disk containing stars, gas, and dust, along with a central concentration of stars known as the bulge. This bulge is often surrounded by a halo of older stars.&nbsp;



The spiral arms, which extend from the central bulge, are regions of active star formation and are rich in young, hot stars, giving them a bright, bluish appearance.&nbsp;



These arms are also sites where interstellar gas and dust are concentrated, leading to the formation of new stars.&nbsp;



Spiral galaxies are classified into different types based on the tightness of their spirals and the size of their central bulge, with classifications ranging from tightly wound arms in Sa galaxies to more loosely wound arms in Sc galaxies. The <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</a>, our home galaxy, is a prime example of a spiral galaxy.



<h2 class="wp-block-heading" id="h-the-constellation-pavo">The constellation Pavo</h2>



Pavo, which means "peacock" in Latin, is a constellation in the southern sky. It was named by the Dutch astronomer Petrus Plancius in the late 16th century, based on observations made during the Dutch explorations of the southern hemisphere. 



Pavo is one of the 12 constellations created by Plancius from the records of explorers Pieter Dirkszoon Keyser and Frederick de Houtman. 



The constellation is known for its distinctive shape, resembling a peacock with a long, curved tail. Pavo is not visible from most of the northern hemisphere, but it can be seen from the southern hemisphere, particularly during the winter months.



The constellation contains several interesting celestial objects, including the star Peacock, also known as Alpha Pavonis, which is the brightest star in the constellation. This star is a blue-white subgiant located about 179 light-years from Earth.



Image Credit: <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>/Euclid/Euclid Consortium/NASA&nbsp;



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Spiral galaxy NGC 6744 in the constellation Pavo

Today's Image of the Day from the European Space Agency features the Little Dumbbell Nebula, also known as Messier 76, located in the constellation Perseus 3,400 light-years away from Earth.



Astronomers captured this image of the Little Dumbbell Nebula to commemorate the 34th anniversary of the Hubble Space Telescope, a joint venture between NASA and the European Space Agency (<a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>).



The snapshot provides not only a breathtaking view but also deep insights into the life cycle of <a href="https://www.earth.com/news/dark-stars-scientists-discover-a-new-type-of-star-powered-by-dark-matter/" target="_blank" rel="noreferrer noopener">stars</a> and the dynamic processes within nebulae.



<h2 class="wp-block-heading" id="h-understanding-messier-76">Understanding Messier 76</h2>



Messier 76 is categorized as a planetary nebula - a term which refers to its round, planet-like appearance when viewed through early, low-power telescopes. 



However, the term is somewhat misleading as planetary nebulae have no connection to actual <a href="https://www.earth.com/news/nasa-finds-17-exoplanets-that-have-oceans-and-possibly-alien-life/" target="_blank" rel="noreferrer noopener">planets</a>. 



Instead, they represent an expansive shell of luminous gases expelled by a dying red giant star, which subsequently collapses into a dense, hot white dwarf. 



This transformation marks the late stages of stellar evolution for medium to low-mass stars.



<h2 class="wp-block-heading" id="h-structure-of-messier-76">Structure of Messier 76</h2>



The structure of Messier 76 is particularly notable. It includes a central ring, giving the appearance of a bar-like feature, with two distinct lobes emanating from either side. 



This formation is believed to be the result of materials ejected by the star during its red giant phase, possibly sculpted by interactions with a companion star. 



Although this binary companion is not visible in current Hubble images, its presence is inferred from the thick disk of dust and gas aligned with its orbital plane. 



The phenomenon of the companion star potentially being absorbed by the primary star, a process akin to stellar cannibalism, is a captivating aspect of the nebula's history.



<h2 class="wp-block-heading" id="h-the-dynamic-environment-of-the-nebula">The dynamic environment of the nebula</h2>



At the core of the nebula, the primary star, now collapsing into a <a href="https://www.earth.com/news/white-dwarf-stars-may-be-billions-of-years-older-than-estimated/" target="_blank" rel="noreferrer noopener">white dwarf</a>, reaches extreme temperatures. This heat is estimated to be 120,000 degrees Celsius - about 24 times hotter than the surface of our Sun. 



This intensely hot remnant is visible as a small, bright point at the center of the nebula. Directly below this, another star can be seen; however, it is merely aligned with the nebula by chance and is not a part of it.



<h2 class="wp-block-heading" id="h-powerful-glow-of-messier-76">Powerful glow of Messier 76</h2>



The dynamics within Messier 76 are driven by powerful forces. The central disk seems to constrict the material, creating two lobes of gas escaping along the rotational axis of the star, perpendicular to the disk.&nbsp;



The lobes are propelled outward by a potent stellar wind, moving at a staggering two million miles per hour. This rapid movement is sufficient to travel the distance from Earth to the <a href="https://www.earth.com/news/timeless-mystery-solved-scientists-uncover-what-is-inside-the-moons-core/" target="_blank" rel="noreferrer noopener">Moon</a> in just over seven minutes.&nbsp;



The collision of the fast-moving gas with older, slower-moving material ejected during the star’s red giant phase results in the stunning glowing effect seen in the nebula. 



The glow, ignited by the ultraviolet radiation from the white dwarf, is a spectacle of colors with red emanating from nitrogen and blue from oxygen.



<h2 class="wp-block-heading" id="h-a-cosmic-moment-in-time">A cosmic moment in time</h2>



Despite its current brilliance, the existence of the Little Dumbbell Nebula is fleeting on a cosmological scale. It is expected to last only about 15,000 years - a mere moment in the lifespan of the <a href="https://www.earth.com/news/dark-energy-is-ripping-the-universe-apart-but-we-arent-sure-how/" target="_blank" rel="noreferrer noopener">universe</a>. 



This brief period highlights the transient nature of such cosmic phenomena, which, while short-lived, provide crucial insights into the mechanics of stellar evolution and the complex interactions within these celestial sculptures.



<h2 class="wp-block-heading" id="h-more-about-messier-76">More about Messier 76</h2>



Messier 76 was discovered by Pierre Méchain in 1780. It was later cataloged by Charles Messier, who included it in his famous list of nebulous objects.



The nebula's faintness and small size require a good telescope to be observed effectively, with larger telescopes able to reveal more of its fine details and structure.



Studying Messier 76 helps astronomers understand the life cycle of stars and the processes that occur during the late stages of stellar evolution. 



The materials expelled by planetary nebulae like Messier 76 eventually contribute to the interstellar medium, from which new stars and planetary systems may form.



Image Credit: ESA Space Agency&nbsp;



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Secrets of the Little Dumbbell Nebula  

Today's Image of the Day from the European Space Agency features the galaxy I Zwicky 18, which was captured in remarkable detail by the James Webb Space Telescope.



I Zwicky 18 is a blue compact dwarf <a href="https://www.earth.com/news/newly-discovered-stars-milky-way-are-old-as-universe/" target="_blank" rel="noreferrer noopener">galaxy</a> located approximately 59 million light-years away in the constellation Ursa Major.&nbsp;



<h2 class="wp-block-heading" id="h-star-formation-in-i-zwicky-18">Star formation in I Zwicky 18</h2>



The galaxy is notable for its relatively young appearance and the fact that it contains very few heavy elements. These characteristics indicate that it has experienced little <a href="https://www.earth.com/news/baby-stars-release-sneezes-of-gas-and-dust-as-they-develop/" target="_blank" rel="noreferrer noopener">star formation</a> compared to other galaxies of similar age.



“The galaxy was first identified by Swiss astronomer Fritz Zwicky in the 1930’s and resides roughly 59 million light-years from Earth,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>. “This galaxy has gone through several sudden bursts of star formation.”&nbsp;



According to ESA, I Zwicky 18 is typical of the kinds of galaxies that inhabited the early universe and is much smaller than our <a href="https://www.earth.com/news/runaway-star-j1249-36-spotted-trying-to-escape-our-milky-way-galaxy/" target="_blank" rel="noreferrer noopener">Milky Way</a>.



<h2 class="wp-block-heading" id="h-webb-telescope-image-of-the-galaxy">Webb telescope image of the galaxy</h2>



“Two major starburst regions are embedded in the heart of the galaxy. The wispy brown filaments surrounding the central starburst region are bubbles of gas that have been heated by stellar winds and intense ultraviolet radiation unleashed by hot, young stars,” noted ESA.



“A companion galaxy resides nearby to the dwarf galaxy, which can be seen at the bottom of the wider-field image. The companion may be interacting with the dwarf galaxy and may have triggered that galaxy's recent star formation.”&nbsp;



ESA explained that the “orange blobs” surrounding the galaxy are the dim glow from ancient fully formed galaxies at much larger distances.



<h2 class="wp-block-heading" id="h-key-characteristics-of-i-zwicky-18">Key characteristics of I Zwicky 18</h2>



As previously mentioned, the galaxy has a very low abundance of elements heavier than hydrogen and helium, suggesting that it has not undergone significant stellar processing.



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



Despite its old age, I Zwicky 18 contains many young, hot stars. This suggests that it might have experienced a burst of <a href="https://www.earth.com/news/hubble-detects-awe-inspiring-newborn-star/" target="_blank" rel="noreferrer noopener">star formation</a> relatively recently in its history.



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



The galaxy has a high density of gas, which is a prime ingredient for star formation. This gas is mostly in the form of hydrogen.



<h3 class="wp-block-heading" id="h-unusual-characteristics">Unusual characteristics</h3>



Its characteristics are more typical of primordial galaxies found in the early universe, making it a valuable object of study for understanding galaxy formation and evolution.



Ultimately, I Zwicky 18 provides insights into the conditions and processes that might have been prevalent in the early universe.



<h3 class="wp-block-heading" id="h-life-cycles-of-stars-and-dust">Life cycles of stars and dust</h3>



The image was captured as part of a Webb program to study the life cycle of dust in I Zw 18.&nbsp;



“Scientists are now building off of previous research with Hubble obtained at optical wavelengths, studying individual dusty stars in detail with Webb’s equivalent spatial resolution and sensitivity at infrared wavelengths.”&nbsp;



ESA noted that this galaxy is of particular interest as its content of elements heavier than helium is one of the lowest of all known <a href="https://www.earth.com/news/early-galaxy-formation-occurred-much-faster-than-we-thought/" target="_blank" rel="noreferrer noopener">galaxies</a> in the local universe.&nbsp;



“Such conditions are thought to be similar to those in some of the first star-forming galaxies at high redshift, so the Webb study of I Zw 18 should shed light on the life-cycle of stars and dust in the early universe.”



<h2 class="wp-block-heading" id="h-the-constellation-ursa-major">The constellation Ursa Major </h2>



Ursa Major, also known as the Great Bear, is one of the most prominent and easily recognizable constellations in the northern sky. 



Its name, "Ursa Major," means "Great Bear" in Latin, and it has been a significant part of various mythologies and star lore across cultures for thousands of years. 



One of the most famous asterisms within Ursa Major is the Big Dipper, a group of seven bright stars that form a shape resembling a ladle or dipper. The Big Dipper is often used as a navigation tool because it points to Polaris, the North Star, located in the nearby constellation Ursa Minor.



Ursa Major is best viewed in the northern hemisphere and is circumpolar, meaning it is visible year-round for much of the Northern Hemisphere. Its position changes with the seasons, rotating around Polaris, the North Star.



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



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Dwarf galaxy provides a window into the early universe

Today's Image of the Day from the European Space Agency features NGC 1333, a reflection nebula located in the Perseus molecular cloud about 960 light-years away from Earth. The photo is a mosaic of images captured by the James Webb Space Telescope.



<h2 class="wp-block-heading" id="h-the-power-of-webb-nbsp-nbsp">The power of Webb&nbsp;&nbsp;</h2>



“Webb’s superb sensitivity allows astronomers to investigate young objects with extremely low masses. Some of the faintest ‘stars’ in the picture are in fact newly born free-floating brown dwarfs with masses comparable to those of giant planets,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



The same cluster was featured as the 33rd anniversary image of the Hubble Space Telescope in April 2023.&nbsp;



According to ESA, Hubble’s image just scratched the surface of this region, because clouds of dust obscure much of the star formation process. 



"Observing with larger aperture and in the infrared part of the spectrum, Webb is capable of peering through the dusty veil to reveal newborn stars, brown dwarfs and planetary mass objects."



<h2 class="wp-block-heading" id="h-webb-s-view-of-ngc1333">Webb’s view of NGC1333</h2>



ESA noted that the center of the image presents a deep peek into the heart of the NGC1333 cloud.&nbsp;



“Across the image we see large patches of orange, which represent gas glowing in the infrared. These so-called Herbig-Haro objects form when ionized material ejected from young stars collides with the surrounding cloud. They are hallmarks of a very active site of star formation."



The disks of gas and dust that surround the <a href="https://www.earth.com/news/newly-discovered-stars-milky-way-are-old-as-universe/" target="_blank" rel="noreferrer noopener">stars</a> in this image may eventually produce planetary systems.&nbsp;



<h2 class="wp-block-heading" id="h-formation-of-the-sun">Formation of the Sun</h2>



“Similar to the young stars in this mosaic, our own Sun and planets formed inside a dusty molecular cloud, 4.6 billion years ago. Our Sun did not form in isolation but as part of a cluster, which was perhaps even more massive than NGC 1333,” explained ESA.



Over time, the stars in the Sun's birth cluster would have drifted apart due to gravitational interactions and the dispersion of gas in the region.



Astronomers have been studying certain clues, such as isotopic signatures in meteorites, that hint the Sun may have formed near massive stars. These stars likely produced supernovae, which could have influenced the early <a href="https://www.earth.com/news/mysterious-objects-spotted-in-the-outer-solar-system-beyond-pluto/" target="_blank" rel="noreferrer noopener">solar system</a> by injecting heavy elements like iron-60.



<h2 class="wp-block-heading" id="h-star-formation-in-ngc-1333">Star formation in NGC 1333</h2>



NGC 1333 is a vibrant example of a stellar nursery, where active <a href="https://www.earth.com/news/baby-stars-release-sneezes-of-gas-and-dust-as-they-develop/" target="_blank" rel="noreferrer noopener">star formation</a> is ongoing. It is known for its chaotic appearance, shaped by the interactions between newborn stars and the surrounding material.



Within NGC 1333, astronomers have observed a high level of turbulence, which makes the region dynamic and complex. 



These disturbances are caused by the outflows of young stars as they eject material into their surroundings, creating shock waves and influencing further star formation.&nbsp;



These outflows are often seen as jets, which are visible in multiple wavelengths of light, especially infrared, as the surrounding dust absorbs visible light.



<h2 class="wp-block-heading" id="h-significance-of-ngc-1333">Significance of NGC 1333</h2>



NGC 1333 is also an area of interest for studying the early stages of star and <a href="https://www.earth.com/news/planet-formation-new-insights-mechanics-physics/" target="_blank" rel="noreferrer noopener">planet formation</a>, as many of the stars within the cluster are in their infancy, still in the process of gathering material and developing protoplanetary disks.&nbsp;



In images, NGC 1333 is marked by bright patches of blue and red, representing reflection <a href="https://www.earth.com/news/six-rogue-worlds-discovered-inside-a-young-star-forming-nebula/" target="_blank" rel="noreferrer noopener">nebulae</a> and the ionized gas created by energetic young stars.&nbsp;



<h2 class="wp-block-heading" id="h-the-perseus-molecular-cloud-nbsp">The Perseus molecular cloud&nbsp;</h2>



The Perseus molecular cloud is a vast region of cold gas and dust located about 600 light-years away from Earth in the constellation <a href="https://www.earth.com/news/1500-billion-orphan-stars-discovered-in-the-perseus-galaxy-cluster/" target="_blank" rel="noreferrer noopener">Perseus</a>.&nbsp;



It is one of the most studied star-forming regions in our galaxy due to its relative proximity and the diversity of its young stellar objects. This cloud spans several hundred light-years and contains dense pockets of gas where new stars are actively forming.&nbsp;



These areas are often enshrouded in thick dust, which obscures them in visible light but allows astronomers to study them using infrared and radio wavelengths.



The Perseus molecular cloud is particularly interesting because of the chemistry taking place within it, including the formation of complex organic molecules that could be precursors to life.&nbsp;



Image Credit: ESA/Webb, NASA &amp; CSA



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Stellar nursery shines in the Perseus cloud

Today's Image of the Day from the European Space Agency features the colors of fall across the continent of Europe. 



“This compilation of images, captured by the Copernicus Sentinel-2 mission, showcases the characteristic hues of autumn in different European countries,” noted <a href="https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-2/Earth_from_Space_Autumn_foliage_across_Europe" target="_blank" rel="noreferrer noopener">ESA</a>.



“Autumn foliage is one of nature's most stunning displays, turning deciduous forests into landscapes painted with vibrant colors. As temperatures cool and daylight shortens, deciduous trees cease producing chlorophyll so that leaves turn yellow, orange and red – the colors of autumn.”



<h2 class="wp-block-heading" id="h-colors-of-fall-in-europe-nbsp">Colors of fall in Europe&nbsp;</h2>



The colors of <a href="https://www.earth.com/news/fall-will-be-unusually-warm-across-most-us-states/" target="_blank" rel="noreferrer noopener">fall</a> vary across regions due to the diversity of tree species and the climate.



<h3 class="wp-block-heading" id="h-northern-europe">Northern Europe</h3>



In countries like Norway, Sweden, and Finland, vibrant yellows and golds dominate, especially in forests of birch and aspen. Deep red hues come from the native rowan and some types of maple.



<h3 class="wp-block-heading" id="h-western-and-central-europe">Western and Central Europe</h3>



The landscapes of France, Germany, and Switzerland showcase golden and copper tones. Beech, oak, and chestnut trees create waves of yellow and bronze, while occasional maples provide shades of bright red.



<h3 class="wp-block-heading" id="h-eastern-europe">Eastern Europe</h3>



Countries like Poland, Ukraine, and Hungary experience a full mix of autumn colors, with maple and <a href="https://www.earth.com/news/should-we-cut-down-all-oak-trees-isoprene-emissions-air-pollution-climate-change/" target="_blank" rel="noreferrer noopener">oak forests</a> turning red and orange. The Carpathian Mountains are especially vibrant during this season.



<h3 class="wp-block-heading" id="h-southern-europe">Southern Europe</h3>



In Mediterranean areas like Italy, Spain, and Greece, fall colors are more subtle but still beautiful. Although many <a href="https://www.earth.com/news/trees-struggling-to-breathe-store-co2-hotter-climate/" target="_blank" rel="noreferrer noopener">trees</a> are evergreen, higher elevations display patches of golden-yellow and rusty tones from poplars, chestnuts, and maples.



The European fall color season typically peaks in October, depending on altitude and latitude. The dramatic landscapes of Europe - mountains, lakes, and historic villages - further enhance the stunning display of autumn colors across the continent.



<h2 class="wp-block-heading" id="h-why-do-the-leaves-change-colors">Why do the leaves change colors?</h2>



Leaves change color in the fall due to changes in daylight, temperature, and the chemical processes within the leaves.&nbsp;



During spring and summer, leaves are green because they contain chlorophyll, a pigment that allows them to absorb sunlight and produce food through photosynthesis.&nbsp;



However, as the days get shorter and temperatures drop in the fall, trees begin preparing for winter by slowing down their food production.



<h3 class="wp-block-heading" id="h-decrease-in-chlorophyll">Decrease in chlorophyll</h3>



With less sunlight, trees stop producing chlorophyll, which is highly sensitive to light and temperature. As chlorophyll breaks down, the green color fades, revealing other pigments in the leaves.



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



There are always other pigments in the leaves, but they’re hidden by the green chlorophyll during the growing season. In fall, these pigments become visible.



Carotenoids produce yellow and orange hues, which we see in trees like birch, beech, and aspen.



Anthocyanins are pigments that create reds, purples, and deep oranges. They form in the fall when sugars get trapped in the leaves. Trees like maple and sumac are known for their red and purple leaves.



Tannins produce brown colors and are especially visible in oaks.



<h3 class="wp-block-heading" id="h-weather-and-climate-influence">Weather and climate influence</h3>



Temperature, sunlight, and soil moisture also affect the intensity and duration of fall colors.&nbsp;



Sunny days and cool nights help produce more vibrant reds and purples. Wet or cloudy weather, on the other hand, can lead to more muted colors.



Ultimately, the color change is a part of the tree’s preparation for winter dormancy. By shedding <a href="https://www.earth.com/news/secrets-of-aging-discovered-in-plant-leaves/">leaves</a>, trees conserve water and energy, improving their chances of surviving the winter months.



<h2 class="wp-block-heading" id="h-how-do-the-fall-colors-affect-us">How do the fall colors affect us?</h2>



Fall colors can have a significant impact on us emotionally, mentally, and even physically. They provide us with a sense of warmth, nostalgia, and comfort.&nbsp;



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



The vibrant colors of fall can evoke positive emotions and improve our mood. Studies show that exposure to natural landscapes with diverse colors can reduce stress, enhance feelings of happiness, and promote a sense of well-being.



Nature’s changing colors have a calming effect on our minds, providing mental clarity and relaxation. The natural beauty of fall landscapes can encourage mindfulness, allowing us to be present and appreciate our surroundings, which is beneficial for mental health and focus.



<h3 class="wp-block-heading" id="h-connection-to-nature">Connection to nature</h3>



Autumn’s beauty encourages people to go outside, whether it’s hiking through colorful forests, driving along scenic routes, or simply taking a walk in the park.&nbsp;



This connection with <a href="https://www.earth.com/news/nature-walking-quantifiably-improves-brain-health-and-functioning/" target="_blank" rel="noreferrer noopener">nature</a> has benefits for physical health, improving immunity and reducing blood pressure, and it also strengthens our environmental appreciation.



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



The cycle of fall reminds us of change, letting go, and renewal. For many, fall is a time for introspection and resetting goals, as the season symbolizes transformation and the approach of a new chapter in life.



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Fall colors transform Europe's landscape 

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

Psychedelic substances, once the mainstay of counterculture, are steadily blending into mainstream recreational and therapeutic activities across North America. But are they safe?



A recent in-depth study offers some sobering new insights. The investigation reveals a worrying association between the use of hallucinogens - a category that includes substances such as psilocybin, LSD, DMT (Ayahuasca), and MDMA (Ecstasy) - and a heightened risk of developing schizophrenia.



The comprehensive study was conducted by researchers at ICES, The Ottawa Hospital, the Department of Family Medicine at the <a href="https://www.uottawa.ca/en" target="_blank" rel="noreferrer noopener">University of Ottawa</a>, and Bruyère Health Research Institute.



Although the positive therapeutic potential of psychedelics has garnered significant enthusiasm lately, the research team cautions that usually, such celebration outpaces thorough understanding of the associated risks.



<h2 class="wp-block-heading" id="h-psychedelic-use-and-schizophrenia">Psychedelic use and schizophrenia </h2>



The analytic foundation of the study relied on over a decade's health data of people aged 14 to 65 years living in Ontario, Canada. 



The researchers monitored changes in hallucinogen-related emergency department (ED) visits and ensuing <a href="https://www.earth.com/news/owning-a-cat-before-age-25-doubles-the-risk-of-schizophrenia/" target="_blank" rel="noreferrer noopener">schizophrenia</a> diagnosis rates.



The results were astonishing: Relative to the general population, an individual with a hallucinogen-related visit to the emergency department had a staggering 21-fold increase in the likelihood of developing schizophrenia.



Even after factoring in co-occurring substance use and <a href="https://www.earth.com/news/mental-health-crisis-half-of-the-worlds-population-will-be-affected-by-age-75/" target="_blank" rel="noreferrer noopener">mental health disorders</a>, the risk remained 3.5 times higher.



<h2 class="wp-block-heading" id="h-alarming-data-trends">Alarming data trends</h2>



The data, spanning from 2008 to 2021, also revealed another concerning trend. While the annual rates of ED visits associated with <a href="https://www.earth.com/news/cannabis-and-hallucinogen-use-are-at-historically-high-levels/" target="_blank" rel="noreferrer noopener">hallucinogen use</a> were stable between 2008 and 2012, they saw a sudden 86% spike in the period from 2013 to 2021.



Within three years of an ED visit involving hallucinogens, 4% of individuals were diagnosed with schizophrenia. 



In comparison, the diagnosis rate for the general population was a meager 0.15% within the same timeframe - a difference that equates to an alarming 21 times higher risk for the former group.



When stacked against the risk associated with alcohol and <a href="https://www.earth.com/news/high-potency-cannabis-use-linked-to-epigenetic-changes/" target="_blank" rel="noreferrer noopener">cannabis use</a>, hallucinogens still didn't fare well. 



Individuals with ED visits due to psychedelic use were at 4.7 and 1.5 times higher risk of schizophrenia, respectively, compared to alcohol and cannabis.



<h2 class="wp-block-heading" id="h-risks-of-psychedelic-use">Risks of psychedelic use</h2>



Despite the study’s potentially alarming findings, the study authors emphasized that their findings do not establish a causal link between hallucinogen use and schizophrenia and that much more information is needed about risks associated with different types and use patterns of hallucinogens.



“Our findings underscore a concerning link between hallucinogen use that requires care in the emergency room and increased risk of schizophrenia,” said Dr. Daniel Myran, a Canada Research Chair in Social Accountability at the University of Ottawa.



“While there is enormous enthusiasm for psychedelic-assisted therapy as a new mental health treatment, we need to remember how early and limited the data remains for both the benefits and the risks,” noted Myran.



This highlights the urgency for more studies and improved public health measures to better comprehend and mitigate these risks.



<h2 class="wp-block-heading" id="h-screening-and-monitoring">Screening and monitoring</h2>



In clinical trials of psychedelic-assisted psychotherapy, experts integrate safeguards like excluding individuals with a personal or family history of schizophrenia and close monitoring,.



However, the study authors warn about the potential risks of hallucinogen use outside of these controlled settings.



The study also highlights the need to identify those at higher risk of developing serious adverse events from hallucinogens, facilitating safe recruitment practices in future trials.



<h2 class="wp-block-heading" id="h-psychedelic-safety-in-clinical-settings">Psychedelic safety in clinical settings</h2>



The implications of this study are very critical both to public health and to policy development. As psychedelics become more accepted for therapeutic and recreational use, understanding the associated risks becomes increasingly crucial.



Initiatives for public health education should include specific education on the dangers of hallucinogen use - particularly in cases where there is known predilection to a mental health disorder.



This awareness can be created with targeted community outreach, evidence-based medical guidelines, and collaboration among healthcare providers and mental health specialists.



Another proactive strategy could be mental health checkups for patients before <a href="https://www.earth.com/news/psychedelic-drug-therapy-could-help-treat-alcoholism/" target="_blank" rel="noreferrer noopener">psychedelic therapy</a>. This would allow experts screen for people with a greater risk of an adverse reaction.



The study is published in the journal <a href="https://jamanetwork.com/journals/jamapsychiatry/article-abstract/2825649" target="_blank" rel="noreferrer noopener">JAMA Psychiatry</a>.



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Psychedelic use linked to higher risk of schizophrenia

Psychedelic substances, once the mainstay of counterculture, are steadily blending...

The scorching heatwaves we experience, the wildfires that rage across nations, and the invisible carbon dioxide that fills the air are severely impacting our planet.



In 2023, the world saw extreme heatwaves that fueled substantial wildfires and induced severe droughts across the globe. 



What's more, these <a href="https://www.earth.com/news/fast-wildfires-are-gaining-even-more-speed/" target="_blank" rel="noreferrer noopener">adverse conditions</a> significantly weakened the land's ability to absorb atmospheric carbon. 



The result? A notable surge in atmospheric carbon dioxide levels, growing the scale of concern about accelerating climate change.



<h2 class="wp-block-heading" id="h-heat-and-atmospheric-carbon">Heat and atmospheric carbon </h2>



Data from Hawaii's <a href="https://gml.noaa.gov/obop/mlo/aboutus/aboutus.html" target="_blank" rel="noreferrer noopener">Mauna Loa Observatory</a> showed that atmospheric carbon concentrations skyrocketed by an alarming 86% in 2023 compared to 2012. This increase sets a new record high since tracking of these levels began in 1958.



Interestingly, the rise in carbon dioxide levels cannot solely be pointed towards fossil fuel emissions. These, it seems, only rose by roughly 0.6 percent.



So, what's the primary culprit behind the spike in emissions? It's likely due to weakened <a href="https://www.earth.com/news/extreme-fire-risk-has-grown-exponentially-in-a-hotter-climate/" target="_blank" rel="noreferrer noopener">carbon absorption</a> by natural ecosystems.



<h2 class="wp-block-heading" id="h-weakened-carbon-sink">Weakened carbon sink </h2>



An international team of scientists backed by the <a href="https://www.esa.int/Applications/Observing_the_Earth/Extreme_heat_weakens_land_s_power_to_absorb_carbon" target="_blank" rel="noreferrer noopener">ESA</a> Science for Society Near-Realtime Carbon Extremes project - along with the Climate Change Initiative RECCAP-2 project - set out to investigate the root causes of this event.



The experts used global vegetation models and satellite data to expedite a carbon budget report for 2023.



Land typically absorbs about one-third of human-generated carbon dioxide emissions. However, in 2023, this absorption capacity fell to a mere one-fifth of its usual level, marking the weakest performance by land carbon sink in two decades.



<h2 class="wp-block-heading" id="h-extreme-heat-and-carbon-storage-capacity">Extreme heat and carbon storage capacity </h2>



“Our research shows that 30% of this decline was driven by the extreme heat of 2023, which fueled massive <a href="https://www.earth.com/news/ultrafine-particles-in-wildfire-smoke-change-weather-patterns/" target="_blank" rel="noreferrer noopener">wildfires</a> that ravaged vast areas of Canadian forest and triggered severe drought across parts of the Amazon rainforest," said Philippe Ciais, a scientist from France’s Laboratory for Climate and Environmental Sciences.



"These fires and droughts led to substantial vegetation loss, weakening the land ecosystem’s ability to absorb carbon dioxide. This was further compounded by a particularly strong El Niño, which historically reduces the carbon absorption capacity in the Tropics." 



The situation was made worse by a particularly potent El Niño, which historically reduces carbon absorption capacity in the tropics.



<h2 class="wp-block-heading" id="h-carbon-emitted-from-wildfires">Carbon emitted from wildfires</h2>



Widespread wildfires across Canada and droughts in the Amazon in 2023 released nearly the same amount of carbon to the atmosphere as North America's total fossil fuel emissions. 



This finding highlights the severe impact of climate change on natural ecosystems.



The Amazon rainforest, one of the planet's most essential carbon sinks, is showing signs of long-term distress. Some regions of the Amazon that no longer absorb carbon have shifted into net sources of carbon emissions.



<h2 class="wp-block-heading" id="h-earth-s-declining-capacity-to-absorb-carbon">Earth's declining capacity to absorb carbon </h2>



The declining capacity of Earth's land ecosystems to absorb carbon dioxide may signify that these natural carbon sinks are nearing their limits. 



They won't be able to continue to provide the mitigation service of absorbing half of human-induced carbon dioxide emissions.



"Consequently, achieving safe global warming limits will require even more ambitious emission reductions than previously anticipated," Ciais adds.



<h2 class="wp-block-heading" id="h-saving-earth-s-carbon-cycle">Saving Earth's carbon cycle</h2>



The study also highlights that <a href="https://www.earth.com/news/climate-models-underestimate-sea-ice-melt-and-global-warming/" target="_blank" rel="noreferrer noopener">current climate models</a> might be underestimating the pace and impact of extreme events such as droughts and fires on the degradation of these crucial carbon reservoirs.



"Understanding the knock-on effects of climate change on the carbon cycle is imperative, and the two ESA study projects demonstrate the importance of Earth observation in developing methodologies to provide rapid assessment of these impacts globally," said Stephen Plummer, <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a> Earth Observation Applications Scientist.



"These results are particularly alarming, especially considering the difficulty the world is having limiting warming to 1.5°C, as laid out in the Paris Agreement," noted Clement Albergel, ESA’s Acting Head of the Actionable Climate Information Section.



Given these alarming revelations, it's vital that we ask ourselves: how can we contribute to mitigating these effects? Can we consume less, recycle more, and seek out greener alternatives in our daily lives? The need for climate action could not be more urgent.



The study is published in the journal <a href="https://academic.oup.com/nsr/advance-article/doi/10.1093/nsr/nwae367/7831648?login=false" target="_blank" rel="noreferrer noopener">National Science Review</a>.



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Extreme heat of 2023  weakened Earth's carbon storage capacity

The scorching heatwaves we experience, the wildfires that rage across...

Desolate, arid and virtually lifeless - that's how one would traditionally describe the Atacama Desert. Stretching across the Pacific coast in Chile, this unforgiving territory is known as the driest spot on our planet. It's no surprise that the desert is deemed hostile to most forms of life.



Yet, a closer look at the sandy soil reveals a perfect paradox - a diverse community of resilient microorganisms, thriving in the seeming desolation.



Investigating the function of these microorganisms can be challenging. Modern science tools often hit a wall while trying to separate the genetic material of the living from the dead in this <a href="https://www.earth.com/news/saharan-dust-supports-ocean-life-far-from-the-desert/" target="_blank" rel="noreferrer noopener">microbial community</a>.



But now, a promising solution to this mystery is at hand.



<h2 class="wp-block-heading" id="h-identifying-the-desert-microbes">Identifying the desert microbes </h2>



Presented this week in Applied and Environmental Microbiology, an international team of researchers announces a novel separation technique. 



This innovative method distinguishes extracellular (eDNA) from intracellular (iDNA) genetic material, casting a spotlight on the living members of the elusive microbial community.



The technique is a game-changer in studying microbial life in <a href="https://www.earth.com/news/floods-are-becoming-more-deadly-in-the-desert/" target="_blank" rel="noreferrer noopener">low-biomass environments</a> - an area where conventional DNA extraction methods have been falling short.



The research was led by Dr. Dirk Wagner from the GFZ German Research Centre for Geosciences in Potsdam. He believes this development could usher in a new era in microbial research.



<h2 class="wp-block-heading" id="h-active-life-in-arid-regions-of-desert">Active life in arid regions of desert</h2>



The microbiologists put their novel method to practice on soil samples collected from the Atacama Desert, running along a west-to-east path from the ocean's edge to the foothills of the Andes mountains. 



What they found was intriguing: a variety of potentially active microbes were discovered in the most arid regions of the desert.



"Microbes are the pioneers colonizing this kind of environment and preparing the ground for the next succession of life," said Dr. Wagner. He noted that these processes aren't exclusive to desert lands.



"This could also apply to new terrain that forms after earthquakes or landslides where you have more or less the same situation, a mineral or rock-based substrate."



<h2 class="wp-block-heading" id="h-new-approach-to-dna-extraction">New approach to DNA extraction</h2>



Conventional tools for DNA extraction from <a href="https://www.earth.com/news/desert-grass-survives-by-capturing-moisture-from-fog/" target="_blank" rel="noreferrer noopener">soils</a> often present a blend of living, dormant and dead cells from microorganisms.



“If you extract all the DNA, you have DNA from living organisms and also DNA that can represent organisms that just died or died a long time ago," explained Dr. Wagner.



The formidable challenge, especially in low-biomass environments, is securing sufficient good-quality DNA for metagenomic sequencing to unravel specific microbes and their processes. 



Dr. Wagner and his team have found a way around this by creating a process that filters out intact cells from a mixture, leaving behind eDNA genetic fragments from dead cells.



<h2 class="wp-block-heading" id="h-implications-for-extraterrestrial-life">Implications for extraterrestrial life</h2>



The significance of this research extends far <a href="https://www.earth.com/news/this-desert-moss-might-help-humans-live-on-mars/" target="_blank" rel="noreferrer noopener">beyond Earthly environments</a>. 



The techniques developed for distinguishing living microbial communities in the Atacama Desert could offer a tantalizing approach to astrobiology, a field dedicated to exploring life beyond our planet. 



Mars, with its barren and inhospitable terrain, presents a setting not unlike parts of the Atacama. Here, scientists speculate that if life ever arose, it might have persisted in microbial form beneath the surface. 



By applying this novel genetic separation technique, future missions to Mars could possibly identify signs of life that traditional methods might overlook, thus advancing our understanding of life's potential in the cosmos.



<h2 class="wp-block-heading" id="h-charting-future-research">Charting future research</h2>



The advent of this cutting-edge method represents a paradigm shift in microbial ecology and environmental microbiology. 



It opens up new avenues for research, not only in desolate regions like the Atacama Desert but also in other extreme environments such as Antarctic ice, deep-ocean vents, and arid regions worldwide. 



By accurately categorizing active microorganisms, we can better understand their roles in nutrient cycling, climate change, and biogeochemical processes. 



This refined approach provides a critical tool for scientists aiming to unravel the life forms that have evolved to thrive against the odds. It also lays the groundwork for future discoveries at the intersections of life, earth, and space sciences.



<h2 class="wp-block-heading" id="h-vibrant-life-beneath-atacama-desert">Vibrant life beneath Atacama Desert</h2>



Dr. Wagner plans to extend the study's methodology to other hostile environments. He believes that this technique, which focuses on active microorganisms (iDNA), can provide deeper insights into the active part of the community.



By examining the vibrant life thriving beneath the surface of the Atacama Desert, we are slowly unearthing the secret resilience of microbes in the most <a href="https://www.earth.com/news/oases-grow-by-human-effort-but-face-threats-from-desertification/" target="_blank" rel="noreferrer noopener">arid of environments</a>. 



As we continue to witness the incredible adaptation and survival of life in the harshest of conditions, the lines of possibility for microbial life continue to expand, taking us one step deeper into unraveling the mysteries of life itself.



The study is published in the journal <a href="https://search.app?link=https%3A%2F%2Fjournals.asm.org%2Fdoi%2F10.1128%2Faem.01443-24&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">Applied and Environmental Microbiology</a>.



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Living microbes found in the driest desert on Earth

Desolate, arid and virtually lifeless - that's how one would...

Pando, an extraordinary organism residing in Utah, quietly stands out among the myriad of living beings that inhabit our planet, captivating scientists and nature enthusiasts alike. 



This remarkable colony of quaking aspen trees (Populus tremuloides) stretches across 106 acres, and is connected by an extensive underground root system that forms a single, unified organism rather than just a forest of unrelated individuals.



With its remarkable size and age, Pando dwarfs its fellow inhabitants, holding the potential to be not only the oldest living being but also the largest organism on Earth. It is a symbol of nature's resilience and complexity over millennia.



<h2 class="wp-block-heading" id="h-utah-s-pride-the-incredible-pando">Utah's pride: The incredible Pando</h2>



A group of American researchers has suggested that this 106-acre woodland in the heart of Utah could have originated from a single seedling, which sprouted 34,000 years ago, pre-dating the end of the <a href="https://www.earth.com/news/disastrous-climate-changes-of-the-last-ice-age-could-happen-again/" target="_blank" rel="noreferrer noopener">last ice age</a>.



Even bolder estimates propose that this clonal organism, which appears to consist of 47,000 separate trees, might have been present tens of thousands of years earlier.



<h2 class="wp-block-heading" id="h-the-astonishing-life-of-clonal-organisms">The astonishing life of clonal organisms</h2>



Pando (which means "I spread" in Latin) is intriguing because of its massive size, but it also boasts a unique genetic identity shared by all its individual parts that are linked together through one vast network of roots.



This form of asexual reproduction makes Pando a <a href="https://www.earth.com/news/listening-to-the-largest-and-oldest-tree-on-earth-what-does-it-have-to-say/" target="_blank" rel="noreferrer noopener">clonal organism</a>, with each 'tree' being a part of the whole, rooted and growing from the same entity. 



There are other life forms, including fungi and the bristlecone pines on the White Mountains in eastern California, that display similar capabilities. They survive through <a href="https://www.earth.com/news/scientists-have-had-a-breakthrough-in-cloning-coconut-trees/" target="_blank" rel="noreferrer noopener">cloning</a> methods for hundreds, or even thousands of years.



<h2 class="wp-block-heading" id="h-unlocking-pando-s-historical-tales">Unlocking Pando's historical tales</h2>



To discern Pando's true age more accurately, the research team meticulously collected around 500 samples, including root, leaf, and bark, from different parts of this giant organism.



They also obtained specimens from other, unrelated aspens and embarked on a journey to sequence their DNA.



The scientists identified 4,000 genetic variations within these samples, and the mutation patterns narrated a captivating story that dates back potentially between 16,000 and 80,000 years.



<h2 class="wp-block-heading" id="h-unraveling-the-genetic-enigma">Unraveling the genetic enigma</h2>



The researchers, led by Rozenn Pineau of the <a href="https://www.uchicago.edu/en" target="_blank" rel="noreferrer noopener">University of Chicago</a>, noted that they had initially expected a close genetic correlation between trees that are physically near each other.



"You would expect that the trees that are spatially close are also closer genetically," Pineau told Helena Kudiabor at Nature. "But this is not exactly what we find. We found a spatial signal, but that is much weaker than what we expected."



Those trees that were in close proximity did share more similar mutations than those that were far apart - but only slightly more.



This discovery adds a new layer of complexity to understanding Pando's genetic structure and resilience.



Additional research focusing on Pando's mutation history and its genomic protection methods could provide insights into how this plant (and other similar organisms) has managed to survive for millennia.



<h2 class="wp-block-heading" id="h-ensuring-pando-s-enduring-legacy">Ensuring Pando's enduring legacy</h2>



Concerns are mounting over the longevity of Pando. Ensuring its survival will require a deep understanding of this ancient <a href="https://www.earth.com/news/plants-use-dna-duplication-to-increase-their-resilience/" target="_blank" rel="noreferrer noopener">plant's resilience</a> against the assaults of man and nature.



Moreover, similar investigations into other clonal organisms elsewhere may offer Pando competition for its venerable title. 



One competitor lies in a patch of Posidonia oceanica seagrass off the Spanish island of Formentera, which some believe to be more than 200,000 years old.



<h2 class="wp-block-heading" id="h-the-ecological-significance-of-pando">The ecological significance of Pando</h2>



Pando is more than just a marvel of age and size; it plays a crucial role in the local ecosystem. 



This vast network of quaking <a href="https://www.earth.com/news/aspen-forests-could-reverse-biodiversity-loss-in-europe/" target="_blank" rel="noreferrer noopener">aspens</a> supports a diversity of wildlife by providing habitat and food for numerous species, from insects and birds to larger mammals such as deer and elk.



The interconnected root system of Pando also aids in soil stabilization, which prevents erosion and supports the health of the surrounding environment.



However, understanding Pando's ecological contributions has become more urgent than ever, as climate change and human activities threaten its survival. 



Efforts to study and preserve this unique organism are now critical, not only to protect its ancient legacy but also to help maintain the delicate balance of the ecosystem it anchors.



<h2 class="wp-block-heading" id="h-the-enduring-hymns-of-pando">The enduring hymns of Pando</h2>



Pando's survival through the ages is a tribute to time itself. It stands as a constant reminder of the ancient world, sharing with us stories of an era long gone. 



As we continue to unravel the mysteries of Pando, we can only hope that this ancient marvel stands tall and flourishes in the years to come.



The research is published in <a href="https://www.biorxiv.org/content/10.1101/2024.10.19.619233v2">BioRxiv</a>.



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The world's largest living organism consists of 47,000 trees

Pando, an extraordinary organism residing in Utah, quietly stands out...

Our world is changing. The ocean is on the rise, threatening to disrupt the lives of coastal communities.



As the water inches its way into people's lives, various agencies and organizations are making strides to prepare for this new reality. Right in the heart of these efforts is NASA, offering critical insights on rising sea levels.



<h2 class="wp-block-heading" id="h-sea-level-data-is-accessible-to-the-public">Sea-level data is accessible to the public</h2>



NASA's extensive global data is now accessible to the public in the brand-new sea level section of the Earth Information Center. 



This comprehensive global sea level <a href="https://www.earth.com/news/global-sea-levels-spiked-dramatically-in-2023/" target="_blank" rel="noreferrer noopener">change</a> website is the product of a collaboration between <a href="https://www.nasa.gov" target="_blank" rel="noreferrer noopener">NASA</a>, the U.S. Department of Defense, the World Bank, the U.S. Department of State, and the UN Development Programme.



The site presents comprehensive projections of expected sea level rise through the year 2150 for coastlines around the globe. It also provides estimates of anticipated flooding for coastal communities or regions over the coming three decades. 



The projections draw on diverse sources such as data gathered by NASA and its collaborators, computer models of ice sheets and the ocean, the latest sea level assessment from the Intergovernmental Panel on Climate Change, and more.



"NASA innovates for the benefit of humanity. Our cutting-edge instruments and data-driven information tools help communities and organizations respond to natural hazards and extreme weather, and inform critical coastal infrastructure planning decisions,” said Karen St. Germain, the director of the Earth Science Division at NASA Headquarters in Washington.



<h2 class="wp-block-heading" id="h-global-sea-level-changes">Global sea level changes</h2>



Major global organizations like the World Bank are set to utilize the valuable data from the global sea level change site for creating Climate Risk Profiles for countries particularly susceptible to sea level <a href="https://www.earth.com/news/pacific-sea-levels-are-rising-faster-than-anywhere-in-the-world/" target="_blank" rel="noreferrer noopener">rise</a>.



The Defense Department will consistently feed sea level rise data into its plans to help predict - and possibly avoid - hazards caused to its facilities by rising oceans.



Similarly, the State Department will use the data for a range of activities, from disaster preparedness to long-term adaptation planning, and supporting partners globally in related efforts.



<h2 class="wp-block-heading" id="h-moment-of-truth-in-our-climate-fight">Moment of truth in our climate fight</h2>



Assistant Secretary-General Selwin Hart, special adviser to the United Nations secretary-general on climate action and just transition, stresses the significance of the current period. 



“We are at a moment of truth in our fight against the <a href="https://www.earth.com/news/2024-shatters-heat-records-earths-hottest-year-is-here/" target="_blank" rel="noreferrer noopener">climate crisis</a>. The science is unequivocal and must serve as the bedrock upon which decision-making is built," said Hart.



"With many communities around the world already facing severe impacts from sea-level rise, this new resource provides a vital tool to help them protect lives and livelihoods."



<h2 class="wp-block-heading" id="h-rising-faster-than-ever">Rising faster than ever</h2>



NASA-led data has revealed that between 1970 and 2023, 96% of countries with coastlines have experienced sea level rise. Furthermore, the rate of this global rise has doubled, from 0.08 inches (0.21 centimeters) per year in 1993 to about 0.18 inches (0.45 centimeters) per year in 2023.



As the rate of sea level rise increases, millions could face the linked effects earlier than anticipated, including larger storm surges, more saltwater intrusion into groundwater, and additional high-tide flood days.



“This new platform shows the timing of future floods and the magnitude of rising waters in all coastal countries worldwide,” said Nadya Vinogradova Shiffer, director of the ocean physics program at NASA Headquarters in Washington.



<h2 class="wp-block-heading" id="h-clear-data-for-unclear-times">Clear data for unclear times</h2>



Earlier data released this year shows that Pacific Island nations will face at least 6 inches (15 centimeters) of sea level rise over the next 30 years. Moreover, the number of high-tide flood days will increase significantly for nearly all Pacific Island nations by the 2050s.



Ben Hamlington is a sea level researcher at NASA’s <a href="https://www.jpl.nasa.gov" target="_blank" rel="noreferrer noopener">Jet Propulsion Laboratory</a> in Southern California and head of the agency’s sea level change science team.



“The data is clear: Sea levels are rising around the world, and they’re rising faster and faster. Having the best information to make decisions about how to plan for rising seas is more crucial than ever,” concluded Hamlington.



While the future remains uncertain, one thing stays clear - the importance of accurate, <a href="https://www.earth.com/news/2023-climate-change-report-record-high-temperatures-greenhouse-gases-sea-level-rise/" target="_blank" rel="noreferrer noopener">reliable data</a> to guide our decisions. 



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Sea level warnings: What coastal cities must prepare for

Our world is changing. The ocean is on the rise,...

The lifeline of our oceans is in danger. A recent study warns us about the impacts of global warming on marine life, with plankton populations at significant risk. 



The study points out a straightforward, yet frequently undervalued reality that if we don't act quickly, vast amounts of marine life could be on the brink of extinction within this century.



<h2 class="wp-block-heading" id="h-plankton-struggle-with-rapid-warming">Plankton struggle with rapid warming</h2>



The research examines the world of <a href="https://www.earth.com/news/plankton-help-predict-ocean-biodiversity-losses/" target="_blank" rel="noreferrer noopener">tiny ocean dwellers</a> known as plankton, which are more important than one might think. 



For the first time, the researchers compared how these tiny creatures responded to significant global warming in the past with how they might react to similar conditions anticipated by the end of our century.



The revelations were rather disturbing. It seems that plankton are struggling to keep up with the current rate of temperature increases. 



<h2 class="wp-block-heading" id="h-plankton-cannot-adapt-quickly-enough">Plankton cannot adapt quickly enough</h2>



Dr Rui Ying, the lead author of the study, led this project during his PhD work in marine ecology at the <a href="https://www.bristol.ac.uk" target="_blank" rel="noreferrer noopener">University of Bristol</a>. 



“The results are alarming as, even with the more conservative climate projections of a 2°C increase, it is clear plankton cannot adjust quickly enough to match the much faster rate of warming which we’re experiencing now and looks set to continue," said Dr. Ying.



“Plankton are the lifeblood of the oceans, supporting the marine food web and <a href="https://www.earth.com/news/tiny-plankton-play-a-big-role-in-the-global-carbon-cycle/" target="_blank" rel="noreferrer noopener">carbon storage</a>. If their existence is endangered, it will present an unprecedented threat that would disrupt the whole marine ecosystem and have devastating, wide-reaching consequences for marine life and also human food supplies.”



<h2 class="wp-block-heading" id="h-predicting-the-future-by-looking-at-the-past">Predicting the future by looking at the past</h2>



To arrive at these conclusions, the scientists developed a new model to analyze how plankton behaved 21,000 years ago, during the last Ice Age.



They compared this with how the plankton might behave under future climate conditions. This approach, which focused on a specific plankton group that has survived through the ages, provides unique insights and an impressive level of accuracy.



“The past is often considered key to understanding what the world could look like in the future. Geological records showed that plankton previously relocated away from the warmer oceans to survive," explained Dr Ying.



“But using the same model of ecology and climate, projections showed the current and future rate of warming was too great for this to be possible again, potentially wiping out the <a href="https://www.earth.com/news/plankton-tiny-ocean-creatures-overlooked-critical-life-on-earth/" target="_blank" rel="noreferrer noopener">precious organisms</a>.”



<h2 class="wp-block-heading" id="h-broader-issue-of-global-warming">Broader issue of global warming</h2>



This research brings attention to the broader issue of global warming and our collective responsibility to curb its effects on plankton and overall marine ecosystems.



The Paris Agreement was a worldwide commitment to keep the increase in global average temperatures well below 2°C (3.6°F) above pre-industrial levels and strive to limit the increase to 1.5°C (2.7°F).



However, a recent United Nations report indicates that the world may face as much as 3.1°C (5.6°F) warming if governments do not act more decisively to reduce carbon emissions.



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



Study co-author Daniela Schmidt is a professor of Earth Sciences at the University of Bristol and a celebrated marine ecologist. She has led multiple Intergovernmental Panel on Climate Change (<a href="https://www.ipcc.ch" target="_blank" rel="noreferrer noopener">IPCC</a>) reports and her insights are critical to understanding the climate crisis.



“This work emphasizes the great risks posed by the dramatically fast <a href="https://www.earth.com/news/oceans-are-quickly-losing-ability-to-support-fish-due-to-plankton-loss/" target="_blank" rel="noreferrer noopener">climate and environmental changes</a> the world is now facing. With these worrying trends set to worsen, there will be very real consequences for our ecosystems and people’s livelihoods, including fishing communities," said Schmidt.



"So, the message is clear - all nations must collectively and individually step up efforts and measures to keep global warming to a minimum.”



With the ocean’s lifeblood under threat, it’s time to act. If tiny plankton are at risk, the entire marine world - and our food supply - could be, too.



The research on plankton tells us that it does not have to be this way - the world can still limit global warming. But in order for that to happen, every nation needs to step up and take action.



The study is published in the journal <a href="https://www.nature.com/articles/s41586-024-08029-0" target="_blank" rel="noreferrer noopener">Nature</a>.



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Plankton at risk: Global warming threatens the ocean's lifeline

The lifeline of our oceans is in danger. A recent...

Microplastics and nanoplastics have emerged as pressing global concerns, capturing significant scientific attention and driving advancements in nanotechnology that is aimed at addressing their pervasive presence in the environment.



These minute <a href="https://www.earth.com/news/hundreds-of-thousands-of-nanoplastics-found-in-bottled-water/" target="_blank" rel="noreferrer noopener">particles</a> infiltrate our air, water, and soil, and even make their way into the bodies of animals and humans.



Originating from everyday consumer products and the breakdown of larger plastic materials, they represent an unseen environmental foe with potentially far-reaching impacts on ecosystems and human health.



<h2 class="wp-block-heading" id="h-the-hidden-dangers-of-nanoplastics">The hidden dangers of nanoplastics</h2>



<a href="https://www.earth.com/news/microplastics-pose-a-greater-threat-to-some-ocean-animals/" target="_blank" rel="noreferrer noopener">Microplastics</a>, defined as fragments smaller than 5 mm in diameter, are already recognized as a major issue.



However, nanoplastics, which are nearly a thousand times smaller, pose an even more insidious threat. 



These particles can bypass biological barriers and infiltrate the vital organs of living creatures. Alarmingly, recent research has even detected nanoplastics in the human brain.



Study senior author Henrique Eisi Toma is a professor in the Institute of Chemistry at the University of São Paulo (IQ-USP).



"Nanoparticles aren't visible to the naked eye or detectable using conventional microscopes, so they’re very hard to identify and remove from water treatment systems," said Professor Toma.



<h2 class="wp-block-heading" id="h-nanotechnology-solutions-for-plastic-pollution">Nanotechnology solutions for plastic pollution</h2>



Researchers at USP, with support from FAPESP, have developed a novel solution using nanotechnology.



The team, led by Professor Toma, created a low-cost method employing magnetic nanoparticles functionalized with polydopamine (PDA), a polymer derived from dopamine which is a neurotransmitter present in the human body.



These nanoparticles bind to micro- and nanoplastic waste, allowing for their removal through the application of a magnetic field.



“Polydopamine is a substance that mimics the adhesive properties of mussels, which cling very tenaciously to many surfaces," noted Toma. 



"It adheres firmly to fragments of plastic in water and enables the magnetic nanoparticles to capture them. This undesirable material can then be removed from the water with a magnet."



<h2 class="wp-block-heading" id="h-striving-for-plastic-degradation">Striving for plastic degradation</h2>



The research team aims for more than just the removal of these particles; they are also exploring methods for sustainable degradation. 



By immobilizing lipase, an enzyme capable of breaking down <a href="https://www.earth.com/news/bacteria-can-break-down-pet-pollution-in-ocean-water/" target="_blank" rel="noreferrer noopener">polyethylene terephthalate</a> (PET), the team decomposes PET and other plastics into their basic components, such as terephthalic acid and ethylene glycol, which can be reused in the production of new plastics.



"Our goal isn't just to remove plastic from water but also to contribute to its recycling in a sustainable manner," Toma emphasized.



PET is a significant <a href="https://www.earth.com/news/pollutants-from-fossil-fuels-are-embedded-in-coral-skeletons/" target="_blank" rel="noreferrer noopener">pollutant</a> due to its prevalence in plastic bottles and other common items.



The degradation process developed by Toma's team breaks PET down into monomeric forms, enabling the reuse of these components in new manufacturing processes.



"Our study focused on PET, but other researchers can include other specific enzymes to process different plastics, such as polyamide or nylon, for example," he noted.



<h2 class="wp-block-heading" id="h-challenges-and-complexities">Challenges and complexities</h2>



Addressing the micro- and nanoplastics problem is far from straightforward. 



While <a href="https://www.earth.com/news/yale-scientists-are-turning-wood-into-high-quality-bioplastic/" target="_blank" rel="noreferrer noopener">bioplastics</a> offer a potential solution as they come from renewable sources, they too can fragment into micro- and nanoplastics before fully degrading.



"Being biocompatible, they’re even more insidious because they can interact more directly with our organisms and trigger biological reactions," Toma explained.



An additional concern raised by Professor Toma is the contamination of bottled mineral water. While mineral water is often valued for its taste and mineral content, it can contain higher levels of micro- and nanoplastics than treated tap water.



"Treated potable water undergoes processes such as filtration, coagulation and flotation to eliminate most residues, whereas mineral water, which is better in some ways - it’s lighter, contains more salts and tastes better, for example - isn't processed in any of these ways because that would destroy its properties," said Toma.



"If the environment from which it's collected is contaminated by bioplastics, these particles will reach the consumer."



<h2 class="wp-block-heading" id="h-advancing-solutions-with-nanotechnology">Advancing solutions with nanotechnology</h2>



The scale of this environmental challenge demands continuous innovation and policy intervention. 



The nanotechnology developed by Toma and his colleagues represents a significant advancement, showcasing how science can address complex environmental issues. 



Professor Toma calls for persistent research efforts and urges public administrators to recognize and tackle the problem, stressing the need for collective action to safeguard the planet.



The study is published in the journal <a href="https://linkinghub.elsevier.com/retrieve/pii/S0968432824001392" target="_blank" rel="noreferrer noopener">Micron</a>.



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How nanotechnology is fighting microplastic pollution

Microplastics and nanoplastics have emerged as pressing global concerns, capturing...

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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

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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

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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



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.

Designing crops that can beat the heat

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