<p>Today's <strong>Image of the Day</strong> from the European Space Agency features the Southern Ring Nebula, also known as NGC 3132, 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).</p>



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



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



<p>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 in visible light is actually a less massive companion, while the fainter, dimmer star is the dying, hot central star that has shed its outer layers to form the nebula. This star is a white dwarf and is responsible for the ionization of the gas in the nebula, causing it to glow.</p>



<p>“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. 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,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.</p>



<p>“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. 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.”</p>



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



<p>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>.&nbsp;These layers are illuminated by ultraviolet radiation from the central white dwarf.</p>



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



<p>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.</p>



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



<p>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.</p>



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



<p>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.</p>



<p>“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.”</p>



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



<p>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>.</p>



<p>“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.</p>



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



<p>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).</p>



<p>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;</p>



<p>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 formed from the supernova explosion, which is one of the brightest pulsars in the sky.</p>



<p>Vela is best observed in the Southern Hemisphere, where it can be seen in the summer months, though it is partially visible in the Northern Hemisphere as well. Its position along the Milky Way makes it a popular region for both amateur and professional astronomers to explore.</p>



<p>Image Credit: NASA, ESA, CSA, STScI</p>



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Southern Ring Nebula in the constellation Vela 

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

<p>Today's Image of the Day from NASA Earth Observatory features Harrat Khaybar, one of the largest volcanic fields in Saudi Arabia. This extensive lava field, which covers 5,400 square-miles, was formed by eruptions over the last five million years.</p>



<p>“According to the Smithsonian’s Global Volcanism Program, the volcanic field is still active, and eight lava flows are less than 1,500 years old. The last known eruption was reported in Harrat Khaybar in the 7th century,” said <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.</p>



<p>A couple of the youngest volcanic vents in Harrat Khaybar can be seen in this <a href="https://eoimages.gsfc.nasa.gov/images/imagerecords/152000/152839/harratkhaybar_oli2_20240425_lrg.jpg" target="_blank" rel="noreferrer noopener">image</a>, which was captured by the OLI-2 (Operational Land Imager-2) on Landsat 9.&nbsp;</p>



<h2 class="wp-block-heading" id="h-jabal-qidr-nbsp">Jabal Qidr&nbsp;</h2>



<p>“These volcanoes resulted from different eruptive styles: Jabal Qidr is a stratovolcano (or composite cone); Jabal Abyad is a felsic dome; and Jabal Bayda is a tuff cone,” explained NASA.</p>



<p>“Jabal Qidr, in the northern part of the volcanic field, is built from several generations of dark, basaltic lava flows. Qidr has a 400-meter-diameter summit crater and exhibits the textbook cone shape of a stratovolcano. This is the only stratovolcano in the harrats of western Saudi Arabia.”</p>



<h2 class="wp-block-heading" id="h-jabal-abyad-nbsp">Jabal Abyad&nbsp;</h2>



<p>Visible in the center of the image, Jabal Abyad was formed from a more viscous, silica-rich lava classified as rhyolite, noted NASA.</p>



<p>"While Jabal Qidr exhibits the cone shape of a stratovolcano, Jabal Abyad is a lava dome - a rounded mass of thicker, more solidified lava flows. Abyad’s dome reaches over 2,090 meters above sea level, the highest elevation amongst all the surrounding harrats.”</p>



<h2 class="wp-block-heading" id="h-jabal-bayda-nbsp">Jabal Bayda&nbsp;</h2>



<p>To the west of Jabal Abyad is Jabal Bayda, a tuff cone <a href="https://www.earth.com/news/mysterious-aspect-of-volcanic-eruptions-observed-for-the-first-time/" target="_blank" rel="noreferrer noopener">volcano</a> with a much larger summit crater measuring 1,400 meters in diameter, stated NASA.</p>



<p>"Tuff cones form from the interaction of rising magma with water. When heated rapidly by lava, water turns to steam and expands violently, fragmenting the lava into plumes of very fine grains of ash.”</p>



<p>In Arabic, abyad and bayda are the masculine and feminine words for “white.” The lighter color of the <a href="https://www.earth.com/image/mount-erebus-breaks-through-the-clouds/" target="_blank" rel="noreferrer noopener">mountains</a> is associated with lava that has high silica content. </p>



<h2 class="wp-block-heading" id="h-more-about-harrat-khaybar-nbsp">More about Harrat Khaybar&nbsp;</h2>



<p>One of the notable features of Harrat Khaybar is its striking contrast between the black basaltic lava fields and white-colored rhyolitic lava domes. This contrast creates a visually stunning terrain, with some areas of the field resembling a lunar or Martian landscape.</p>



<p>Harrat Khaybar is part of a larger series of harrats, or lava fields, which are prevalent in the Arabian Peninsula. The largest of these volcanic fields is Harrat Rahat, which stretches over 20,000 square kilometers.</p>



<p>The <a href="https://www.earth.com/news/volcanic-eruptions-play-an-overlooked-role-in-earths-climate/" target="_blank" rel="noreferrer noopener">volcanic activity</a> in Harrat Khaybar began millions of years ago and has continued into relatively recent times, with the last known eruptions occurring several thousand years ago.</p>



<p>The field is also notable for its archaeological sites, including ancient rock art, which provide insights into the early human habitation of the area. </p>



<p>The harsh environment of Harrat Khaybar has shaped both the natural ecosystem and the human activities throughout its history, making it a place of interest not only for volcanologists but also for archaeologists and ecologists.</p>



<h2 class="wp-block-heading" id="h-volcanic-activity-in-saudi-arabia">Volcanic activity in Saudi Arabia </h2>



<p>Saudi Arabia, despite being more commonly associated with vast deserts, has a surprising history of volcanic activity.</p>



<p>Volcanic eruptions have occurred over the past few thousand years, with the most recent major eruption occurring in the year 1256. That eruption, from a series of fissures, sent lava flowing towards the city of Medina, but it stopped before reaching the urban area. Historical records document the panic that followed, as people feared the destruction of the city.</p>



<p>While there hasn't been a significant eruption since, there are still signs of geothermal activity, such as hot springs and occasional minor <a href="https://www.earth.com/news/what-music-will-yellowstones-seismic-activity-produce/" target="_blank" rel="noreferrer noopener">seismic activity</a>. </p>



<p>Researchers monitor the volcanic fields for any signs of future eruptions, though none are currently expected. Despite the long periods of dormancy, Saudi Arabia's volcanic landscape remains an important part of the country's natural history.</p>



<p>Image Credit: NASA Earth Observatory&nbsp;</p>



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Harrat Khaybar: An active lava field in Saudi Arabia

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

<p>Today's <strong>Image of the Day</strong> from NASA Earth Observatory features the Wapiti Fire in central Idaho, which was ignited by lightning on July 24, 2024.&nbsp;</p>



<p>More than a month later, the fire continues to devastate areas across the Boise, Sawtooth, and Salmon-Challis National Forests.&nbsp;</p>



<h2 class="wp-block-heading" id="h-explosive-fire-activity">Explosive fire activity</h2>



<p>In its first month, the Wapiti Fire burned about 9,000 acres. It has now grown twelve times larger, burning more than 108,000 acres.</p>



<p>“Fire activity ramped up in late August, expanding its footprint to over 100,000 acres (400 square kilometers) by early September. The Wapiti fire, as well as the Middle Fork Complex fires burning nearby, have spurred evacuation orders and highway and public lands closures,” noted <a href="https://earthobservatory.nasa.gov/images/153274/wildland-fires-scorch-idaho-wilderness" target="_blank" rel="noreferrer noopener">NASA</a>.</p>



<p>By September 3rd, the Wapiti Fire was 2% contained, with firefighting efforts heavily focused on protecting nearby structures and communities, particularly around Stanley and Lowman.</p>



<h2 class="wp-block-heading" id="h-unpredictable-behavior-of-the-wapiti-fire-nbsp">Unpredictable behavior of the Wapiti Fire&nbsp;</h2>



<p>The fire's behavior has been unpredictable, intensifying during periods of unstable weather, especially when <a href="https://www.earth.com/news/thunderstorms-are-becoming-more-intense-due-to-climate-change/" target="_blank" rel="noreferrer noopener">thunderstorms</a> with strong winds have passed through. This has made containment difficult and forced the evacuation of multiple areas, including the communities along Idaho Highway 21.&nbsp;</p>



<p>Efforts to manage the fire include using air tankers to drop fire retardant and creating containment lines to prevent further spread. However, the fire continues to threaten homes and critical infrastructure, with many structures already lost. </p>



<p>Local authorities have emphasized the importance of residents being prepared for evacuation, advising them to gather essential documents and possessions in advance.</p>



<p>The fire has led to the closure of vast sections of national forest land, with restrictions expected to remain in place until at least the end of the year, depending on the fire's progression.</p>



<h2 class="wp-block-heading" id="h-intensity-of-the-wapiti-fire-nbsp">Intensity of the Wapiti Fire&nbsp;</h2>



<p>According to media reports, the intensity of the Wapiti Fire can be largely attributed to certain types of vegetation in the area that rapidly fuel fire. The main fuel in this case is timber in forests that already have “60-80% tree mortality from insects and disease,” </p>



<p>To make matters worse, the Wapiti Fire is burning in areas that are difficult to reach. The fire is located in steep and rugged terrain within the Boise National Forest that is challenging for firefighting crews to access. The difficult terrain and limited access routes have greatly complicated firefighting efforts.</p>



<h2 class="wp-block-heading" id="h-lightning-caused-wildfires-nbsp">Lightning-caused wildfires&nbsp;</h2>



<p>Lightning is often responsible for igniting large, destructive fires, particularly in remote and forested areas. These <a href="https://www.earth.com/news/wildfires-in-siberia-are-a-growing-global-threat/" target="_blank" rel="noreferrer noopener">wildfires</a> occur when a lightning strike, typically from dry thunderstorms, ignites dry vegetation like grass, leaves, or trees.&nbsp;</p>



<h3 class="wp-block-heading" id="h-contributing-factors">Contributing factors</h3>



<p>The intensity and frequency of these wildfires are influenced by several factors, including the amount of available dry fuel, the local climate, and the specific characteristics of the lightning strike itself, such as its intensity and duration.</p>



<h3 class="wp-block-heading" id="h-western-united-states-nbsp">Western United States&nbsp;</h3>



<p>In some regions, like the western United States, lightning is responsible for the majority of <a href="https://www.earth.com/news/wildfires-threaten-environmental-gains-in-the-amazon/" target="_blank" rel="noreferrer noopener">wildfires</a>, especially during the summer months when thunderstorms are more common. These fires can spread rapidly, driven by winds and the availability of dry fuel, making them difficult to control.&nbsp;</p>



<p>Lightning-caused wildfires can also lead to the formation of large fire complexes, where multiple fires merge into one, further complicating firefighting efforts.</p>



<h3 class="wp-block-heading" id="h-ecological-role">Ecological role</h3>



<p>Interestingly, while lightning-caused wildfires can be destructive, they also play a crucial role in certain ecosystems. These fires can help to clear out dead vegetation, promote new growth, and maintain the health of fire-adapted ecosystems.&nbsp;</p>



<h2 class="wp-block-heading" id="h-the-future-of-fire-weather">The future of fire weather</h2>



<p>The future of fire weather is deeply concerning, as climate change is expected to significantly worsen the conditions that lead to <a href="https://www.earth.com/news/canadian-wildfires-of-2023-were-a-global-environmental-setback/" target="_blank" rel="noreferrer noopener">wildfires</a>.&nbsp;</p>



<h2 class="wp-block-heading" id="h-the-climate-paradox">The climate paradox</h2>



<p>As global temperatures rise, the atmosphere will hold more moisture, but paradoxically, many regions will experience more intense and prolonged droughts. This will dry out <a href="https://www.earth.com/news/increased-co2-is-making-wildfires-more-severe-and-frequent/" target="_blank" rel="noreferrer noopener">vegetation</a>, turning forests and grasslands into tinderboxes ready to ignite.&nbsp;</p>



<p>Additionally, higher temperatures will increase the likelihood of extreme heat waves, which can further desiccate landscapes and create the perfect conditions for fires to spread rapidly and uncontrollably.</p>



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



<p>Another factor influencing fire weather is changing precipitation patterns. While some areas might experience more rain, others will become drier, with rain increasingly falling in intense, short bursts rather than steady, prolonged periods. This leads to rapid runoff, reducing soil moisture and leaving the ground dry and more susceptible to fire. </p>



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



<p>The intensity and frequency of wind events, driven by shifting atmospheric patterns, are also expected to increase, which can fan the flames of wildfires, causing them to spread more quickly and making them harder to control.</p>



<h3 class="wp-block-heading" id="h-extended-fire-seasons">Extended fire seasons</h3>



<p>In the future, fire seasons will likely become longer, and fires will grow in both size and intensity. Regions that have historically been less prone to wildfires may begin to see more frequent fire events as their climates change.&nbsp;</p>



<p>The combination of these factors will make managing wildfires more challenging, putting greater pressure on firefighting resources and leading to increased risks to human life, property, and ecosystems. </p>



<p>The future of fire weather is a harsh reminder of the broader impacts of climate change, and the urgent need to adapt to our new reality.</p>



<p>The Wapiti Fire image was captured on August 31, 2024 by the OLI (Operational Land Imager) on Landsat 8.</p>



<p>Image Credit: NASA Earth Observatory&nbsp;</p>



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

Wapiti Fire in Idaho: Unpredictable and difficult to contain

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



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



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



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



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



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



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



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



<p>NGC 604 spans about 1,500 light-years across, making it one of the largest H II regions in the Local Group of galaxies, which includes the Milky Way, the Andromeda Galaxy, and about 54 other smaller galaxies.&nbsp;</p>



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



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



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



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



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



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



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



<h2 class="wp-block-heading" id="h-process-of-star-formation">Process of star formation</h2>



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



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



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



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



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



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



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



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



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



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



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



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



<p>Image Credit: NASA/ESA/CSA James Webb Space Telescope</p>



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NGC 604 is home to hundreds of hot, massive stars

<p>Today's <strong>Image of the Day</strong> from NASA Earth Observatory features an astronaut view of the northeast coast of Somalia. This region, which borders the Indian Ocean, has a mix of sandy beaches and rugged cliffs.</p>



<h2 class="wp-block-heading" id="h-a-closer-look-at-northeast-somalia">A closer look at Northeast Somalia </h2>



<p>"The detailed image reveals a desert landscape etched by wind and water," said NASA. "Over time, streams have cut canyons into the earth. But streams in this region are ephemeral, making groundwater the main source of fresh water."&nbsp;</p>



<p>"The water table is shallow (wells are typically drilled less than 20 meters deep) and meets the surface toward the coast, creating springs."</p>



<p>According to <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>, bidirectional winds sculpted the tan, brown, and reddish sand into transverse <a href="https://www.earth.com/news/sand-dunes-hold-a-record-of-fire-history/" target="_blank" rel="noreferrer noopener">sand dunes</a> visible near the stream’s deltas. "The orientation of the sand dunes indicates that they were likely formed by summer winds blowing up the coast from the southwest."</p>



<h2 class="wp-block-heading" id="h-economy-of-northeast-somalia">Economy of Northeast Somalia </h2>



<p>The economy of northeast Somalia, specifically the autonomous region of Puntland, is primarily based on fishing, livestock, and trade. </p>



<p>Puntland has a long coastline along the Gulf of Aden and the Indian Ocean, and the waters are home to various types of fish, including tuna, mackerel, and lobster. </p>



<p>However, the fishing industry is underdeveloped and faces challenges such as illegal, unreported, and unregulated (IUU) <a href="https://www.earth.com/news/dark-fleets-hidden-industrial-fishing-activity-exposed/" target="_blank" rel="noreferrer noopener">fishing</a> by foreign vessels.</p>



<p>The arid and semi-arid lands are well-suited for raising goats, sheep, camels, and cattle. <a href="https://www.earth.com/news/bacteria-in-livestock-are-major-drivers-of-antibiotic-resistance/" target="_blank" rel="noreferrer noopener">Livestock</a> is the main export, with animals being sold to markets in the Middle East.</p>



<p>The region is home to important port cities like Bosaso, which is a hub for trade and commerce. These ports are vital for both the local and national economy.</p>



<h2 class="wp-block-heading" id="h-wildlife-of-northeast-somalia">Wildlife of Northeast Somalia </h2>



<p>The region includes a mix of desert-adapted <a href="https://www.earth.com/news/even-desert-plants-are-not-immune-to-climate-stress/" target="_blank" rel="noreferrer noopener">species</a> and those that thrive in the more fertile areas near the coast and highlands. </p>



<h3 class="wp-block-heading" id="h-mammals">Mammals</h3>



<p>Large mammals such as the Somali wild ass, a critically endangered species, and the gerenuk, a long-necked antelope, are among the most notable inhabitants. </p>



<p>The Somali wild ass is particularly suited to the harsh desert environment, while the gerenuk can survive long periods without water by feeding on moisture-rich vegetation.</p>



<h3 class="wp-block-heading" id="h-birds">Birds</h3>



<p>Birdlife in Northeast Somalia is also abundant, with a variety of species adapted to different habitats ranging from coastal areas to dry savannahs. </p>



<p>Raptors such as the Somali ostrich and various eagles can be spotted, along with <a href="https://www.earth.com/news/how-do-migratory-birds-navigate-with-such-accuracy/" target="_blank" rel="noreferrer noopener">migratory birds</a> that pass through the region during seasonal changes. </p>



<h3 class="wp-block-heading" id="h-marine-life-reptiles-and-insects">Marine life, reptiles, and insects</h3>



<p>The coastal waters, especially along the Gulf of Aden, are home to dolphins, whales, and a variety of fish species.</p>



<p>The region's reptiles include various species of lizards, snakes, and tortoises, many of which are well-adapted to the arid conditions. Insects, particularly locusts and butterflies, play significant roles in the local ecosystem.</p>



<h3 class="wp-block-heading" id="h-wildlife-conservation">Wildlife conservation </h3>



<p>Despite its arid climate, Northeast Somalia's diverse ecosystems support a surprising range of wildlife, although many species face threats from habitat loss, overgrazing, and hunting. </p>



<p>Conservation efforts are ongoing, but the region's political instability has often hampered effective wildlife management and protection.</p>



<h2 class="wp-block-heading" id="h-culture-of-northeast-somalia">Culture of Northeast Somalia </h2>



<p>Northeast Somalia's culture is a mosaic of tradition, religion, and external influences, reflecting the resilience and adaptability of its people.</p>



<p>The region's culture is deeply intertwined with Islam, which influences daily life, social norms, and celebrations. Poetry and storytelling are highly valued, with oral traditions serving as a key method for passing down history and values. </p>



<p>Somalis from this region are known for their hospitality, with the concept of "sooryo" emphasizing the importance of welcoming guests.</p>



<p>Family ties and clan affiliations play a significant role in the social structure, dictating everything from marriage to conflict resolution. </p>



<p>The people of Northeast Somalia have a strong sense of identity and pride, which is often expressed through traditional dances, music, and clothing. Despite modern influences, there is a conscious effort to preserve traditional customs, especially in rural areas.</p>



<p>The photograph was captured on August 9, 2023 as the International Space Station orbited over the Horn of Africa.</p>



<p><em>Image Credit: NASA Earth Observatory&nbsp;</em></p>



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Northeast Somalia: A landscape shaped by wind and water

<p>Today's <strong>Image of the Day</strong> from NASA Earth Observatory features Typhoon Shanshan, the tenth typhoon of the 2024 Pacific season. The storm has been devastating Japan since making landfall on August 29, 2024.&nbsp;</p>



<p>“In late August 2024, Typhoon Shanshan barreled into Japan. The potent storm had already spurred landslides, power outages, and flooding in the southern parts of the country as it continued to move northeast over the archipelago,” said <a href="https://www.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.</p>



<p>“On August 27, before Shanshan made landfall, bands of heavy rain triggered a deadly landslide that buried a house in the city of Gamagori, near Tokyo. The Japan Meteorological Agency (JMA) issued emergency warnings for most of Kyushu Island and parts of central Japan.”</p>



<h2 class="wp-block-heading" id="h-impacts-of-typhoon-shanshan-nbsp">Impacts of Typhoon Shanshan&nbsp;</h2>



<p>Typhoon Shanshan made landfall over the southern tip of Japan’s Kyushu Island with wind speeds of 85 miles per hour, which is equivalent to a Category 1 <a href="https://www.earth.com/news/coastal-hurricanes-are-intensifying-faster-due-to-climate-change/" target="_blank" rel="noreferrer noopener">hurricane</a>.</p>



<p>According to NASA, high waves hit the southern coast of the island, fierce winds knocked over trees and power lines, and more than 100,000 homes were without power the evening of August 29.</p>



<p>As of now, the typhoon has resulted in at least six fatalities and over 170 injuries, with two people still missing. Authorities have issued evacuation orders for millions of residents, particularly in southern and western Japan, due to the heightened risk of landslides and <a href="https://www.earth.com/news/coastal-plants-endangered-by-plastic-pollution-and-flooding/" target="_blank" rel="noreferrer noopener">flooding</a>. </p>



<p>In addition to human casualties, the storm has caused extensive damage to infrastructure, including the suspension of most high-speed rail services and the cancellation of over 1,000 flights.</p>



<p>Shanshan's impact is also being felt in the economy, as major companies like Toyota, Nissan, and Honda have had to halt operations at their factories, especially in Kyushu, which is a key hub for Japan's semiconductor industry. The typhoon's slow movement has exacerbated its effects, leading to severe disruptions across multiple sectors.</p>



<h2 class="wp-block-heading" id="h-intensification-of-typhoon-shanshan-nbsp">Intensification of Typhoon Shanshan&nbsp;</h2>



<p>“The slow-moving storm continued to drench southern Japan as it moved northeast. As of August 29, parts of Miyazaki and Kagoshima prefectures reported rainfall accumulations topping 15.75 inches in 24 hours. Since August 26, the city of Ebino in the Miyazaki prefecture has been deluged with over 33 inches of rain,” said NASA.</p>



<p>Hisashi Nakamura, a climate scientist at the University of Tokyo, noted that the typhoon intensified between August 25 and 27, fueled by unusually warm water in the Philippine Sea. The sea surface temperatures were around 86 degrees Fahrenheit.</p>



<p>Forecasters expect the storm to weaken to a tropical depression by the start of next week, but heavy <a href="https://www.earth.com/news/extreme-rainfall-gets-an-unpredictable-boost-from-air-pollution/" target="_blank" rel="noreferrer noopener">rainfall</a> is likely to continue, raising concerns about further flooding and mudslides.</p>



<h2 class="wp-block-heading" id="h-history-of-typhoons-in-japan">History of typhoons in Japan</h2>



<p>Typhoons have been a significant part of Japan's history, shaping both the culture and the landscape of the nation.&nbsp;</p>



<p>The earliest recorded typhoon in Japan dates back to the 7th century, but it was the "Kamikaze" typhoons of the 13th century that left an indelible mark on Japanese history.&nbsp;</p>



<p>These <a href="https://www.earth.com/news/fast-moving-tropical-cyclones-are-becoming-more-powerful/" target="_blank" rel="noreferrer noopener">typhoons</a>, occurring in 1274 and 1281, are said to have destroyed the Mongol fleets led by Kublai Khan, preventing an invasion and preserving Japan’s independence.&nbsp;</p>



<p>The term "Kamikaze" or "divine wind" was later romanticized in Japanese culture as a symbol of protection by the gods.</p>



<h2 class="wp-block-heading" id="h-typhoon-vera">Typhoon Vera</h2>



<p>In the modern era, the 20th century brought further challenges as Japan faced numerous powerful storms. One of the most catastrophic was Typhoon Vera, also known as the Isewan Typhoon, which struck in 1959.&nbsp;</p>



<p>Vera caused widespread destruction, particularly in the Kansai and Chubu regions, resulting in over 5,000 deaths and displacing hundreds of thousands of people.</p>



<p>Japan's geographical location, where warm, moist air from the Pacific Ocean meets cooler air from the Asian continent, makes it particularly vulnerable to typhoons. The nation has developed sophisticated early warning systems and disaster preparedness strategies to mitigate the impact of these storms.&nbsp;</p>



<p>The image was captured on August 29, 2024 by the VIIRS (Visible Infrared Imaging Radiometer Suite) on the NOAA-20 satellite.</p>



<p>Image Credit: NASA Earth Observatory&nbsp;</p>



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Millions displaced by Typhoon Shanshan in Japan

<p>Dinosaur fossils have revealed an astonishing discovery - collagen, the protein found in bones, skin, muscles, and ligaments, has been detected in specimens as old as 195 million years. This far exceeds the expected half-life of peptide bonds, which usually break down within 500 years.</p>



<p>Such a remarkable finding challenges long-held assumptions about how biological materials degrade over time.</p>



<p>Typically, proteins are some of the first components to disappear from fossils, leaving behind only hard minerals like bone. </p>



<p>Yet, in the case of these ancient dinosaurs, collagen has somehow persisted, offering scientists a unique opportunity to explore molecular preservation in an entirely new way.</p>



<h2 class="wp-block-heading" id="h-dinosaur-collagen-defies-time">Dinosaur collagen defies time</h2>



<p>A recent study from the <a href="https://www.mit.edu/" target="_blank" rel="noreferrer noopener">Massachusetts Institute of Technology</a> (MIT) explains how collagen can survive far beyond its expected lifespan. </p>



<p>The researchers uncovered a special atomic-level interaction that defends collagen from water molecule attacks, forming a barricade that prevents peptide bonds from being broken through hydrolysis.</p>



<p>Study senior author Ron Raines, the Firmenich Professor of Chemistry at MIT, collaborated with lead author and postdoc Jinyi Yang, postdoc Volga Kojasoy, and graduate student Gerard Porter.</p>



<p>"We provide evidence that that interaction prevents water from attacking the peptide bonds and cleaving them. That just flies in the face of what happens with a normal peptide bond, which has a half-life of only 500 years," explained Professor Raines.</p>



<h2 class="wp-block-heading" id="h-the-flexibility-of-dinosaur-collagen">The flexibility of dinosaur collagen</h2>



<p>Collagen is essential to biological structures, particularly due to its tough, fibrous composition. Made of long, intertwined protein strands forming a triple helix, collagen is remarkably stable.</p>



<p>"Collagen is the scaffold that holds us together," said Professor Raines. "What makes the collagen protein so stable, and such a good choice for this scaffold, is that unlike most proteins, it’s fibrous."</p>



<p>Evidence of collagen has even been found in <a href="https://www.earth.com/news/extraordinary-dinosaur-fossils-discovered-from-the-end-of-cretaceous-era/" target="_blank" rel="noreferrer noopener">dinosaur fossils</a>, including an 80-million-year-old <em><a href="https://www.earth.com/news/t-rex-was-about-70-percent-bigger-than-we-thought/" target="_blank" rel="noreferrer noopener">Tyrannosaurus rex</a></em> fossil and a nearly 200-million-year-old sauropodomorph fossil.</p>



<h2 class="wp-block-heading" id="h-secrets-behind-collagen-s-longevity">Secrets behind collagen's longevity</h2>



<p>Collagen's peptide bonds, formed between carbon and nitrogen atoms, are resistant to hydrolysis because of their structure. These bonds also include a double bond with oxygen, creating a molecular structure known as a carbonyl group.</p>



<p>The carbonyl oxygen can share its unbonded electrons with the neighboring <a href="https://www.earth.com/news/did-the-building-blocks-of-life-form-inside-of-water-droplets/" target="_blank" rel="noreferrer noopener">peptide bond</a>, preventing water from disrupting the structure.</p>



<p>To test this, the team created two collagen mimics. One mimic formed the triple helix (trans), while the other had rotated peptide bonds (cis). The researchers found that water could infiltrate and disrupt the cis form, while the trans form resisted water damage.</p>



<p>"A peptide bond is either cis or trans, and we can change the cis to trans ratio. By doing that, we can mimic the natural state of collagen or create an unprotected peptide bond. And we saw that when it was unprotected, it was not long for the world," noted Professor Raines.</p>



<h2 class="wp-block-heading" id="h-the-immortal-protein">The immortal protein</h2>



<p>Unlike other <a href="https://www.earth.com/news/rare-dinosaur-protein/" target="_blank" rel="noreferrer noopener">proteins</a>, collagen is composed entirely of triple helices, with no weak links. "Collagen is all triple helices, from one end to the other. There’s no weak link, and that’s why I think it has survived," said Professor Raines.</p>



<p>While other hypotheses suggest dehydration or other factors may contribute to collagen’s longevity, the MIT research points to the unique molecular protection as a key factor. </p>



<p>"I can’t discount the contributions from other factors, but 200 million years is a long time, and I think you need something at the <a href="https://www.earth.com/news/discrimination-speeds-up-aging-molecular-level/" target="_blank" rel="noreferrer noopener">molecular level</a>, at the atomic level in order to explain it," noted Raines.</p>



<h2 class="wp-block-heading" id="h-dinosaur-collagen-and-protein-preservation">Dinosaur collagen and protein preservation</h2>



<p>The discovery of dinosaur collagen and its ability to survive for hundreds of millions of years opens new doors in the study of protein preservation and fossilization. </p>



<p>These findings could revolutionize how scientists approach the study of ancient life, enabling more accurate reconstructions of prehistoric biology. </p>



<p>Furthermore, in fields such as paleobiology and biotechnology, understanding how proteins withstand degradation over time can inspire new technologies and applications.</p>



<p>As researchers continue to explore the intricacies of collagen, the mysteries of how ancient proteins defy time could lead to broader scientific breakthroughs that span multiple disciplines, from archaeology to bioengineering.</p>



<p>The study is published in the journal <em><a href="https://pubs.acs.org/doi/10.1021/acscentsci.4c00971" target="_blank" rel="noreferrer noopener">ACS Central Science</a></em>.</p>



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How dinosaur collagen survived the test of time

Dinosaur fossils have revealed an astonishing discovery - collagen, the...

<p>Honesty is usually considered the best policy, but there are moments when telling the truth isn’t always the right choice. Social norms help humans decide when to be truthful and when to bend the truth to spare someone’s feelings or avoid harm. But how do these norms translate to robots, which are becoming increasingly integrated into our daily lives? </p>



<p>To explore whether humans are comfortable with robots lying, researchers asked nearly 500 participants to evaluate and justify different types of robot <a href="https://www.earth.com/news/what-happens-when-robots-lie/" target="_blank" rel="noreferrer noopener">deception</a>.</p>



<p>“I wanted to explore an understudied facet of robot ethics, to contribute to our understanding of mistrust towards emerging technologies and their developers,” explained lead author Andres Rosero, a PhD candidate at <a href="https://www.gmu.edu/" target="_blank" rel="noreferrer noopener">George Mason University</a>. </p>



<p>“With the advent of <a href="https://www.earth.com/news/could-generative-ai-go-mad-and-wreck-internet-data/" target="_blank" rel="noreferrer noopener">generative AI</a>, I felt it was important to begin examining possible cases in which anthropomorphic design and behavior sets could be utilized to manipulate users.”</p>



<h2 class="wp-block-heading" id="h-distinct-types-of-deceptive-robot-behavior-nbsp">Distinct types of deceptive robot behavior&nbsp;</h2>



<p>The researchers selected three common work scenarios involving robots - medical, cleaning, and retail - and tested three distinct types of deceptive behavior.&nbsp;</p>



<p>These behaviors were categorized as external state deceptions (lying about the outside world), hidden state deceptions (concealing the robot’s capabilities), and superficial state deceptions (exaggerating the robot’s abilities).</p>



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



<p>In the external state deception scenario, a robot acting as a caretaker for a woman with Alzheimer’s lies, telling her that her late husband will be home soon.&nbsp;</p>



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



<p>The hidden state <a href="https://www.earth.com/news/ai-deception-is-a-growing-issue-that-we-cannot-control/" target="_blank" rel="noreferrer noopener">deception</a> scenario involves a woman visiting a house where a robot is cleaning, unaware that the robot is secretly filming her. </p>



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



<p>In the superficial state deception scenario, a robot in a store complains about feeling pain while helping move furniture, prompting a human to ask someone else to take over for the robot.</p>



<h2 class="wp-block-heading" id="h-how-people-view-robot-deception-nbsp">How people view robot deception&nbsp;</h2>



<p>The team recruited 498 participants, asking each to read one of the scenarios and respond to a questionnaire.&nbsp;</p>



<p>The participants were asked whether they approved of the robot’s actions, how deceptive they considered the behavior, whether the deception was justifiable, and who, if anyone, they believed was responsible for the lie. The researchers then analyzed the responses to identify patterns in how people viewed each type of deception.</p>



<p>Of the three scenarios, participants were most disapproving of the hidden state deception involving the house cleaning robot that was secretly filming. They rated it as the most deceptive and found it largely unjustifiable.&nbsp;</p>



<p>In contrast, while the external and superficial state deceptions were also seen as deceptive, the superficial deception - where the robot pretended to feel pain - was viewed more negatively, likely because it seemed manipulative.</p>



<h2 class="wp-block-heading" id="h-some-lies-are-justified">Some lies are justified</h2>



<p>Interestingly, participants were most supportive of the external state deception, where the robot lied to the Alzheimer’s patient. Many justified the lie by saying it protected the patient from emotional pain, prioritizing compassion over truthfulness.</p>



<p>While participants could offer justifications for all three forms of deception - some suggested that the hidden state deception might have been for security reasons - most were firmly against the idea of robots lying about their capabilities without disclosure.&nbsp;</p>



<h2 class="wp-block-heading" id="h-robots-that-manipulate-users-nbsp">Robots that manipulate users&nbsp;</h2>



<p>More than half the participants who encountered the superficial state deception, where the robot faked pain, also found it unacceptable. When it came to these unacceptable deceptions, participants often pointed the blame at the robot’s developers or owners rather than the robot itself.</p>



<p>“I think we should be concerned about any technology that is capable of withholding the true nature of its capabilities, because it could lead to users being manipulated by that technology in ways the user (and perhaps the developer) never intended,” Rosero said.&nbsp;</p>



<p>“We’ve already seen examples of companies using web design principles and artificial intelligence chatbots in ways that are designed to manipulate users towards a certain action. We need regulation to protect ourselves from these harmful deceptions.”</p>



<h2 class="wp-block-heading" id="h-gauging-human-reactions-to-robots">Gauging human reactions to robots</h2>



<p>However, the researchers acknowledged that this study represents just a first step in understanding human responses to robot deception. They noted that future experiments should use real-life scenarios - such as videos or roleplay simulations - to better gauge human reactions.</p>



<p>“The benefit of using a cross-sectional study with vignettes is that we can obtain a large number of participant attitudes and perceptions in a cost-controlled manner,” Rosero explained.&nbsp;</p>



<p>“Vignette studies provide baseline findings that can be corroborated or disputed through further experimentation. Experiments with in-person or simulated <a href="https://www.earth.com/news/how-will-humans-react-to-coexisting-with-robots/" target="_blank" rel="noreferrer noopener">human-robot interactions</a> are likely to provide greater insight into how humans actually perceive these robot deception behaviors.”</p>



<h2 class="wp-block-heading" id="h-emerging-technologies-and-ethical-decisions">Emerging technologies and ethical decisions</h2>



<p>The research opens the door to understanding how we navigate the ethics of deception when it comes to emerging technologies like robots and AI.&nbsp;</p>



<p>As robots increasingly interact with humans in caregiving, service, and other industries, it's crucial to explore how comfortable we are with their behaviors, particularly when they involve deception.</p>



<p>With this study, the researchers have started a conversation about the ethical complexities of robot deception, pushing us to consider not just what robots can do, but what they should do. And as AI and robotic technologies continue to evolve, the need for clear regulations to protect users from potential manipulation becomes ever more pressing.</p>



<p>The study is published in the journal <a href="http://dx.doi.org/10.3389/frobt.2024.1409712" target="_blank" rel="noreferrer noopener"><em>Frontiers in Robotics and AI</em></a><em>.</em></p>



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Digital deception: How do humans respond to lying robots?

Honesty is usually considered the best policy, but there are...

<p>A new study sheds light on how the brain initiates spontaneous actions without any external triggers. </p>



<p>The research not only explains how these actions emerge but also offers insight into the mysterious ramping of neural activity before movement - a phenomenon that has puzzled scientists for years.</p>



<h2 class="wp-block-heading" id="h-origins-of-spontaneous-action-nbsp">Origins of spontaneous action&nbsp;</h2>



<p>The study was led by Jake Gavenas during his time as a PhD student at the Brain Institute at <a href="https://www.chapman.edu/" target="_blank" rel="noreferrer noopener">Chapman University</a>. He collaborated with two faculty members, Uri Maoz and Aaron Schurger, to explore the origins of spontaneous action. </p>



<p>Together, the researchers simulated activity in neural networks and compared the results to real human intracortical recordings during spontaneous movement.&nbsp;</p>



<p>The findings offer a fascinating explanation for how the brain's <a href="https://www.earth.com/news/neurons-can-predict-human-speech-before-we-say-a-word/" target="_blank" rel="noreferrer noopener">neurons</a> work together to trigger movement without any clear external signal.</p>



<h2 class="wp-block-heading" id="h-brain-signals-and-conscious-actions">Brain signals and conscious actions</h2>



<p>One of the study's key discoveries is that rapid fluctuations in the activity of individual neurons can combine within a network, resulting in much slower fluctuations when viewed at the population level.&nbsp;</p>



<p>This helps explain a phenomenon that many people have experienced but never fully understood - such as when you're standing on a diving platform, contemplating a jump. Nothing outside of you is telling you to jump, but at some point, you make the decision internally, and then you move.&nbsp;</p>



<p>The brain, specifically the motor cortex, is coordinating muscle contractions to make this happen, but the question is: where do the initial signals to jump come from, and how do they relate to your conscious decision to act?</p>



<h2 class="wp-block-heading" id="h-spontaneous-voluntary-actions">Spontaneous voluntary actions</h2>



<p>Since the 1960s, neuroscientists have observed that electrical activity in the brain begins to increase one to two seconds before a spontaneous voluntary action. </p>



<p>Many researchers believed this slow ramping up of activity represented the brain preparing to move, following a preconscious decision. But what remained unclear was how this ramping process starts, as it seemed to emerge from nowhere.</p>



<p>This slow-ramping brain activity has sparked years of debate among neuroscientists and philosophers about <a href="https://www.earth.com/news/humans-do-not-have-free-will-stanford-scientist-robert-sapolsky/" target="_blank" rel="noreferrer noopener">free will</a> and conscious control. </p>



<p>The big question has been whether this ramping signals that the brain is preparing to move even before we consciously decide to act, raising concerns that our actions might be predetermined at an <a href="https://www.earth.com/news/eating-behavior-is-influenced-by-the-unconscious-mind/" target="_blank" rel="noreferrer noopener">unconscious</a> level. Understanding where this ramping activity comes from has been a central problem in neuroscience.</p>



<h2 class="wp-block-heading" id="h-neural-activity-before-spontaneous-actions-nbsp">Neural activity before spontaneous actions&nbsp;</h2>



<p>Researchers like Maoz and Schurger have challenged the view that the brain makes a preconscious decision to move.&nbsp;</p>



<p>In 2012, Schurger proposed an alternative explanation, suggesting that the slow ramping in neural activity is part of a broader process. In this process, slow background fluctuations in the motor cortex accumulate until they hit a certain threshold, triggering movement.</p>



<p>In this framework, the key moment isn't when the slow ramping begins, but rather when the fluctuations cross a threshold to initiate action. This would explain why scientists see ramping activity before movement - because, looking back from the point of action, slow fluctuations would have been leading up to the threshold crossing all along.&nbsp;</p>



<p>This explanation, while compelling, left one crucial question unanswered: where do these slow background fluctuations in neural activity, often called 1/f noise, come from, considering that individual neurons fluctuate quite rapidly?</p>



<h2 class="wp-block-heading" id="h-slow-ramping-signals-nbsp">Slow-ramping signals&nbsp;</h2>



<p>The study is the first to provide an explanation for how slow background fluctuations arise from networks of neurons, none of which, individually, operate on such slow timescales.&nbsp;</p>



<p>The research shows that when neurons interact in a network, their fast, individual fluctuations can combine into slower, population-level fluctuations. These slow fluctuations can then lead to a threshold-crossing event, triggering movement and giving rise to the ramping activity that appears before spontaneous actions.</p>



<p>“We see similar slow-ramping signals before other kinds of spontaneous behaviors, like coming up with creative ideas or freely remembering things that have happened to you. A similar process might therefore underlie those phenomena, but only time and further research will tell,” Gavanas said.</p>



<h2 class="wp-block-heading" id="h-how-the-brain-triggers-movement">How the brain triggers movement</h2>



<p>In short, this study provides a possible explanation for the slow, spontaneous fluctuations in neural activity, which are widespread in neural systems and critical to understanding how the brain triggers movement without external cues.</p>



<p>Moreover, the study highlights an important point about how researchers interpret their findings. According to Maoz, it reveals the bias we have as researchers to think that our results uncover a causal mechanism, when it may really be just a correlation.</p>



<p>This observation reminds us that in neuroscience, understanding the difference between correlation and causation is crucial for making sense of how the <a href="https://www.earth.com/news/where-does-creativity-start-in-the-brain/" target="_blank" rel="noreferrer noopener">brain</a> functions.</p>



<p>The research is published published in the journal <a href="https://dx.doi.org/10.1038/s41467-024-51401-x" target="_blank" rel="noreferrer noopener"><em>Nature Communications</em></a>. </p>



<p>-----</p>



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<p>-----</p>

What causes the brain to initiate spontaneous actions?

A new study sheds light on how the brain initiates...

<p>Starchy foods have played a pivotal role in human evolution, influencing not only our diets but also our genetic makeup. </p>



<p>A recent study has revealed that the rise of agriculture - around 12,000 years ago - and the subsequent increase in starchy staples like wheat and grains, significantly impacted the human genome.</p>



<p>Researchers from the United States, Italy, and the United Kingdom found that our ability to digest carbohydrates has significantly evolved over time. This is closely linked to the rise of agriculture and the increase of starchy foods in our diets.</p>



<h2 class="wp-block-heading" id="h-the-evolutionary-power-of-starchy-foods">The evolutionary power of starchy foods</h2>



<p>The ability to extract energy from starchy foods has increased remarkably during this period, as shown by an expansion in the number of genes encoding enzymes that break down starch - jumping from an average of eight to over 11.</p>



<p>"The copy number of amylase genes had increased in Europeans since the dawn of agriculture, but we had never been able to sequence this locus fully before. It is extremely repetitive and complex," said Peter Sudmant, assistant professor of integrative biology at the <a href="https://www.berkeley.edu/" target="_blank" rel="noreferrer noopener">University of California, Berkeley</a>, and one of the lead authors of the study. </p>



<p>This increase in amylase genes closely matched the rise and spread of agriculture across Europe from the Middle East, aligning with changes in dietary patterns.</p>



<h2 class="wp-block-heading" id="h-decoding-the-amylase-locus">Decoding the amylase locus</h2>



<p>The researchers meticulously examined the genome's amylase locus, where the salivary amylase gene (AMY1) and two pancreatic amylase genes (AMY2A and AMY2B) reside. </p>



<p>"If you take a piece of dry pasta and put it in your mouth, eventually it'll get a little bit sweet. That's your salivary amylase <a href="https://www.earth.com/news/enzyme-produced-during-exercise-protects-against-aging/" target="_blank" rel="noreferrer noopener">enzyme</a> breaking the starches down into sugars," explained Sudmant.</p>



<p>While this happens in all humans and other primates, the <a href="https://www.earth.com/news/complete-sequencing-of-the-human-genome-reveals-new-findings/" target="_blank" rel="noreferrer noopener">human genome</a> contains a significantly higher number of amylase gene copies compared to our primate relatives, such as chimpanzees and Neanderthals, who possess only a single copy of AMY1.</p>



<p>UC Berkeley postdoctoral fellow Runyang Nicolas Lou, one of the study's co-authors, elaborated: "Our study found that each copy of the human genome harbors one to 11 copies of AMY1, zero to three copies of AMY2A, and one to four copies of AMY2B. Copy number is correlated with gene expression and protein level and thus the ability to digest starch."</p>



<h2 class="wp-block-heading" id="h-survival-advantage-and-global-adaptation">Survival advantage and global adaptation</h2>



<p>The presence of multiple amylase genes provided a survival advantage, with the incidence of chromosomes carrying multiple copies increasing sevenfold over the last 12,000 years. </p>



<p>This evolution was not confined to Europe. The researchers found evidence of similar patterns in other agricultural populations globally, regardless of which <a href="https://www.earth.com/news/food-of-the-future-breadfruit-is-resistant-to-climate-change/" target="_blank" rel="noreferrer noopener">starchy plant</a> was domesticated.</p>



<p>Erik Garrison, a co-lead author from the <a href="https://www.uthsc.edu/" target="_blank" rel="noreferrer noopener">University of Tennessee Health Science Center</a>, highlighted the broader implications of the findings: "One of the exciting things we were able to do here is probe both modern and ancient genomes to dissect the history of <a href="https://www.earth.com/news/feeding-habits-shaped-the-skulls-of-humans-and-dinosaurs/" target="_blank" rel="noreferrer noopener">structural evolution</a> at this locus."</p>



<h2 class="wp-block-heading" id="h-the-dawn-of-a-new-method">The dawn of a new method</h2>



<p>Another breakthrough in the study was the development of a new method for identifying diseases involving genes with multiple copies, like amylase. </p>



<p>This method also opens doors to exploring rapidly duplicating genes related to the immune system, skin pigmentation, and mucus production. </p>



<p>The research hints at a potential link between higher AMY1 copies and increased tooth decay, though further investigation is needed.</p>



<p>Joana Rocha, a co-author from UC Berkeley, compared the genomic structure of the amylase locus to “sculptures made of different Lego bricks." </p>



<p>Long-read sequencing techniques allowed the team to reconstruct these complex genetic structures with unprecedented accuracy, shedding light on human evolutionary history and its genetic diversity.</p>



<p>This research, funded by the U.S. National Institutes of Health, is part of an expanding effort to better understand how genetic adaptations have shaped human health and disease through our <a href="https://www.earth.com/news/bronze-age-teeth-discovery-highlight-the-evolution-of-the-human-diet/" target="_blank" rel="noreferrer noopener">changing diets</a> over millennia.</p>



<h2 class="wp-block-heading" id="h-starchy-foods-and-human-health">Starchy foods and human health</h2>



<p>The evolutionary relationship between starchy foods and human genetics continues to shape modern health. </p>



<p>As our ancestors adapted to carbohydrate-rich diets, today's populations still show varying abilities to digest starch, potentially influencing susceptibility to conditions such as obesity and diabetes. </p>



<p>Understanding this genetic adaptation to starchy foods not only offers insights into our past but also provides valuable information for addressing contemporary health challenges linked to diet and metabolism.</p>



<p>The study is published in the journal <em><a href="https://www.nature.com/articles/s41586-024-07911-1" target="_blank" rel="noreferrer noopener">Nature</a></em>.</p>



<p>-----</p>



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<p>-----</p>

How starchy foods shaped human genomes

Starchy foods have played a pivotal role in human evolution,...

<p>Once draped with seas and swathed in rivers, Mars was hardly the barren wasteland that it is today. But just as water can evaporate from your glass on a hot day, it seems Mars' liquid assets went poof sometime over the last 3 billion years. </p>



<p>Where did the water go? We know that a portion of it went deep underground, seeping into the Martian crust. But the rest of it? Well, that's the focus of a recent study.</p>



<h2 class="wp-block-heading" id="h-escape-of-mars-water">Escape of Mars' water</h2>



<p>Scientists have identified two possible exits for <a href="https://www.earth.com/news/insights-alien-life-mars-water-sulfur-discovered-gained-studying-extreme-life-earth/" target="_blank" rel="noreferrer noopener">Martian water</a>. One, it could have filtered into the ground and become frozen in time. Two, it could have broken down into atoms and bounced into the great beyond - space. As interesting as the first scenario sounds, let's focus on the latter one.</p>



<p>John Clarke and his team in the <a href="https://www.bu.edu/csp/" target="_blank" rel="noreferrer noopener">Center for Space Physics</a> at Boston University explain that understanding water's fate on Mars necessitates tracking the escapee atoms.</p>



<p>By measuring the current escape rate and number of hydrogen atoms fleeing into space, they can trace the <a href="https://www.earth.com/news/planets-are-hiding-much-more-water-than-we-thought/" target="_blank" rel="noreferrer noopener">history of water on the planet</a>.</p>



<h2 class="wp-block-heading" id="h-hydrogen-in-the-martian-atmosphere">Hydrogen in the Martian atmosphere</h2>



<p>The water molecules in Mars' atmosphere are essentially dismantled by sunlight into two types of atoms: hydrogen and deuterium, or "heavy hydrogen."</p>



<p>Deuterium is a hydrogen atom with an added neutron, which gives it twice the mass and drags it down, making it slower to escape into space.</p>



<p>Over time, as more basic hydrogen escaped and deuterium lagged, the ratio of deuterium to hydrogen in the Martian atmosphere grew. And this growing ratio is a treasure map for scientists, leading them back to the period when Mars was bustling with water.</p>



<h2 class="wp-block-heading" id="h-hubble-meets-maven">Hubble meets MAVEN</h2>



<p>As instrumental as the <a href="https://science.nasa.gov/mission/maven/" target="_blank" rel="noreferrer noopener">MAVEN</a> (Mars Atmosphere and Volatile Evolution) spacecraft's data was to this study, it had its limitations. It seems even space telescopes have blind spots. </p>



<p>MAVEN struggles to detect deuterium emissions during the lengthy Martian winter, when Mars swings away from the sun. </p>



<p>So, the <a href="https://hubblesite.org/home" target="_blank" rel="noreferrer noopener">Hubble Space Telescope</a> swooped in to fill in the gaps, completing the picture of a three-Martian-year cycle (687 Earth days for a single Martian year). With additional data dating back to 1991, Hubble contributed vastly to this study long before MAVEN arrived at Mars in 2014.</p>



<h2 class="wp-block-heading" id="h-a-turbulent-atmosphere">A turbulent atmosphere </h2>



<p>In our fast-paced world, <a href="https://www.earth.com/news/hidden-water-found-on-mars-would-cover-the-planet-over-one-mile-deep/" target="_blank" rel="noreferrer noopener">Mars</a> is also experiencing its share of change. The Martian atmosphere is not the static entity scientists once thought it to be. It's not just a slow, relaxed diffusion of atoms upwards until they reach an escape altitude - it's a far more high-octane process. </p>



<p>Mars' closeness to the sun causes water molecules to speed through the atmosphere, discharging atoms at higher altitudes.</p>



<p>Scientists have found this transformation is so swift that it even needs added energy to explain the changes. This paints a far more dynamic picture of Mars' atmosphere.</p>



<h2 class="wp-block-heading" id="h-role-of-solar-wind-in-mars-water-loss">Role of solar wind in Mars' water loss</h2>



<p>One cannot discuss the loss of water from Mars without considering the impact of solar wind. This constant stream of charged particles emitted by the sun plays a significant role in the <a href="https://www.earth.com/news/water-frost-detected-on-mars-enormous-volcanoes/" target="_blank" rel="noreferrer noopener">Martian atmosphere's evolution</a>. </p>



<p>Unlike Earth, which is protected by its magnetic field, Mars lacks a global magnetic shield, allowing solar wind to directly interact with its atmosphere. These interactions can strip away light gases, including hydrogen, from the atmosphere. </p>



<p>Recent studies have indicated that solar wind has been a persistent thief, exacerbating the loss of water molecules over eons by providing the energy needed to liberate lighter atoms from their atmospheric bonds, further diminishing the planet's once-thriving liquid reservoirs.</p>



<h2 class="wp-block-heading" id="h-insights-from-isotope-analysis">Insights from isotope analysis</h2>



<p>As scientists delve deeper into the puzzle of Mars' water loss, isotope analysis emerges as a powerful tool in their arsenal. </p>



<p>By examining the ratios of hydrogen isotopes - regular hydrogen versus deuterium -researchers can gain insights into the history and volume of liquid water that once circulated on the planet. Isotopic signatures serve as valuable markers, providing clues to <a href="https://www.earth.com/news/mars-vanishing-water-mystery-new-insights-curiosity-rover/" target="_blank" rel="noreferrer noopener">environmental conditions</a> when the water was abundant.</p>



<p>This analytical approach not only helps paint a more detailed picture of Mars' hydrological history but also opens avenues for comparison with Earth, allowing scientists to enhance their understanding of the planetary processes that govern water retention and loss. </p>



<p>As we continue to explore these methodologies, we inch closer to unraveling the mysteries of our enigmatic neighbor.</p>



<h2 class="wp-block-heading" id="h-piecing-together-an-intergalactic-puzzle"><strong>Piecing together an intergalactic puzzle</strong></h2>



<p>Unraveling the historical mystery of water on Mars extends beyond our solar system. It presents invaluable information for understanding the evolution of Earth-sized planets elsewhere in the cosmos.</p>



<p>With astronomers identifying more of these distant planets, Mars, Venus, and Earth serve as models to understand their conditions.</p>



<p>The research appears in the recent edition of <a href="https://www.science.org/doi/10.1126/sciadv.adm7499" target="_blank" rel="noreferrer noopener"><em>Science Advances</em></a>, published by the American Association for the Advancement of Science.</p>



<p>-----</p>



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<p>-----</p>

Mars lost most of its water, but where did it go?

Once draped with seas and swathed in rivers, Mars was...

<p>Bad teen behavior usually happens away from adult supervision, which means it's easy for parents to blame others for their child's delinquent behavior.</p>



<p>When parents believe that other teens are a bad influence, they may feel tempted to limit these friendships. However, a recent study suggests that this overbearing approach could be counterproductive.</p>



<h2 class="wp-block-heading" id="h-prohibiting-friendships-can-backfire">Prohibiting friendships can backfire</h2>



<p>A new study cautions parents - especially meddling moms - against prohibiting friendships, as such actions might worsen the very behavior they aim to correct.</p>



<p>The study was co-authored by Brett Laursen, a professor of psychology at <a href="https://www.fau.edu/" target="_blank" rel="noreferrer noopener">Florida Atlantic University</a>, and Goda Kaniušonytė from <a href="https://www.mruni.eu/en/" target="_blank" rel="noreferrer noopener">Mykolas Romeris University</a>.</p>



<p>The researchers followed a diverse group of students, consisting of 292 boys and 270 girls aged 9 to 14, over the course of a school year.</p>



<p>The students completed surveys at regular intervals to measure their conduct, perceived maternal disapproval of friends, peer status, and classroom disruptiveness.</p>



<h2 class="wp-block-heading" id="h-maternal-disapproval-impacts-teen-behavior">Maternal disapproval impacts teen behavior</h2>



<p>The findings reveal that maternal disapproval of <a href="https://www.earth.com/news/strong-teen-friendships-build-lasting-resilience/" target="_blank" rel="noreferrer noopener">friendships</a> in response to behavior issues can damage a child's peer status, exacerbating the behavioral problems that mothers intend to address.</p>



<p> "Maternal friend disapproval has counterproductive consequences for <a href="https://www.earth.com/news/kindergarten-conduct-childhood-behavioral-problems-will-cost-society-later/" target="_blank" rel="noreferrer noopener">behavior problems</a> because of the deleterious impact it has on peer status," explained Laursen. </p>



<p>The children, alienated from their peers, faced increased classroom disruptions and adjustment difficulties.</p>



<p>Results from the study indicate that when mothers intervened to restrict friendships, they inadvertently worsened their child’s relationships with peers, causing further issues in behavior. </p>



<p>The researchers found that classmates responded to maternal interference with increased disliking of the child, not just a reduction in popularity. </p>



<p>As a result, children who were subject to friend prohibitions often found themselves ostracized, with classmates distancing themselves to avoid ridicule.</p>



<h2 class="wp-block-heading" id="h-the-domino-effect-of-prohibited-friendships">The domino effect of prohibited friendships</h2>



<p>The study also explored the potential for parents to unintentionally succeed in disrupting friendships. </p>



<p>"Imagine this scenario," said Laursen. "A friendship ends because a mother prohibits it. Now the child needs a <a href="https://www.earth.com/news/reconnecting-with-old-friends-is-as-scary-as-making-new-ones/" target="_blank" rel="noreferrer noopener">new friend</a>. Who wants to be friends with someone who has an unpleasant, interfering mother?" </p>



<p>"Chances are good that friend options are now quite limited, and the child is forced to consider someone who also is rejected by peers; someone who has a hard time making friends."</p>



<p>In many cases, the limited social options available to children after such interventions meant they were more likely to befriend classmates who exhibit the same behavior problems.</p>



<p>The pressure to conform to disruptive behaviors was heightened, compounding the very issues that the mothers had hoped to resolve. </p>



<p>Moreover, the loss of peer status led to increased distress, making it more difficult for children to develop healthy coping mechanisms. </p>



<p>Exclusion from social interactions with typically developing peers deprived them of the chance to learn and practice age-appropriate <a href="https://www.earth.com/news/kids-who-are-active-on-social-media-are-just-as-active-offline/" target="_blank" rel="noreferrer noopener">social skills</a>.</p>



<h2 class="wp-block-heading" id="h-parental-support-improves-teen-behavior">Parental support improves teen behavior</h2>



<p>“Mothers may think they are protecting their children, but in reality, their actions often push them further into undesirable situations,” Laursen noted. </p>



<p>This unintended consequence highlights the risks of direct interference in children’s friendships, especially when it involves cutting off ties with peers.</p>



<p>The study authors suggest that instead of prohibiting friendships, parents should focus on creating positive, <a href="https://www.earth.com/news/supportive-adults-help-protect-children-from-mental-health-issues/" target="_blank" rel="noreferrer noopener">supportive relationships</a> with their children. This, they argue, may help buffer against the negative influence of troublesome peers.</p>



<p>"Parents should consider positive alternatives to friend prohibition," said Laursen. "Focus on maintaining positive relationships with children, because warmth and support can be effective buffers against troublesome peer pressure, potentially disrupting the downward spiral of peer problems and adjustment difficulties."</p>



<h2 class="wp-block-heading" id="h-encouraging-constructive-peer-engagement">Encouraging constructive peer engagement</h2>



<p>The researchers further advise that parents should encourage their children to engage in constructive peer activities within supervised settings. </p>



<p>Participation in clubs and other adult-sponsored activities could offer opportunities for positive peer interaction while minimizing deviant behavior. </p>



<p>According to Laursen, creating these positive environments for friendship can help children build healthier social connections without the need for restrictive parental interference.</p>



<p>Study co-author Goda Kaniušonytė added that parents’ well-meaning interventions often stem from concerns about their child’s behavior, but these efforts can have the opposite effect. </p>



<p>By limiting social opportunities, children may fall into a cycle of rejection and behavioral issues, making it harder for them to adjust in the long term.</p>



<p>The study is published in the journal <em><a href="https://acamh.onlinelibrary.wiley.com/doi/10.1111/jcpp.14043" target="_blank" rel="noreferrer noopener">Journal of Child Psychology and Psychiatry</a></em>.</p>



<p>-----</p>



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<p>-----</p>

When moms meddle: Friend disapproval worsens teen behavior

Bad teen behavior usually happens away from adult supervision, which...

<p>Flea toads, despite being just seven millimeters in length, are among the smallest vertebrates on the planet. Regardless of their tiny size, their organs and bodily functions are almost identical to those of animals that are hundreds or even thousands of times larger.&nbsp;</p>



<p>While extreme miniaturization is a phenomenon seen in nature, the exact mechanisms behind how animals become so small have long remained a mystery. </p>



<p>Now, thanks to a grant of around $1.7 million from the <a href="https://erc.europa.eu/homepage" target="_blank" rel="noreferrer noopener">European Research Council</a> (ERC), a <a href="https://www.ku.dk/english/" target="_blank" rel="noreferrer noopener">University of Copenhagen</a> researcher is setting out to solve this puzzle.</p>



<h2 class="wp-block-heading" id="h-miniature-animals-with-optimal-function-nbsp">Miniature animals with optimal function&nbsp;</h2>



<p>What do flea toads and smartphones have in common? Both have undergone extreme miniaturization while still maintaining all their essential components. </p>



<p>In the tech world, we’ve grown accustomed to devices becoming smaller while retaining or even increasing functionality. </p>



<p>Similarly, in nature, creatures like flea toads, dwarf pygmy <a href="https://www.earth.com/news/scientists-discovered-three-new-species-of-freshwater-goby-fish/" target="_blank" rel="noreferrer noopener">goby fish</a>, and bumblebee bats have evolved to shrink while keeping their vital organs and functions intact, much like their larger relatives.&nbsp;</p>



<p>But what exactly happens within these creatures, especially at the genetic level, when they undergo such evolutionary changes to reduce in size? And are there any biological limits to how small these animals can get?</p>



<p>These are some of the questions Mark D. Scherz, a researcher at the <a href="https://snm.dk/en" target="_blank" rel="noreferrer noopener">Natural History Museum of Denmark</a>, will explore over the next five years. His research will focus on uncovering the genetic processes that govern miniaturization in vertebrates.</p>



<h2 class="wp-block-heading" id="h-understanding-how-animals-become-miniature-nbsp">Understanding how animals become miniature&nbsp;</h2>



<p>“<a href="https://www.earth.com/news/large-animals-vulnerable-human-expansion/" target="_blank" rel="noreferrer noopener">Large animals</a> are often the ones to grab our attention. But I think it to be just as fascinating how nature has managed to miniaturize the exact same vital organs and cram them into a less than one-centimeter-long frog. Today, we know surprisingly little about how it all happens, and I want to change that,” Scherz explained.</p>



<p>Much like the tech industry has continually reduced the size of transistors to make devices smaller and more efficient, nature has found ways to make animals miniature over millions of years. </p>



<p>Scientists believe that extreme miniaturization is linked to evolutionary innovation, although the exact mechanisms remain poorly understood.</p>



<h2 class="wp-block-heading" id="h-genetic-changes-during-miniaturization-nbsp">Genetic changes during miniaturization&nbsp;</h2>



<p>Scherz’s research project, GEMINI (Genomics of Miniaturisation in Vertebrates), aims to uncover the specific genetic changes that occur as animals become smaller. </p>



<p>The goal is to create a sort of genetic “template” that will reveal what happens in the DNA of vertebrates when they <a href="https://www.earth.com/news/brazilian-flea-toad-worlds-smallest-vertebrate-discovered/" target="_blank" rel="noreferrer noopener">shrink in size</a>.</p>



<p>“In several independent studies that looked at the genomes of miniaturized animals, a kind of clean-up and innovation takes place, where the genome becomes smaller. A lot of this happens in repetitive bits of the genome that we used to call <a href="https://www.earth.com/news/junk-dna-may-set-humans-apart-from-chimpanzees/" target="_blank" rel="noreferrer noopener">‘junk’ DNA</a>. But some of it happens in other genes as well, which is what we need to learn more about,” Scherz said.</p>



<h2 class="wp-block-heading" id="h-small-size-big-innovations-nbsp">Small size, big innovations&nbsp;</h2>



<p>In the past, scientists believed that animals generally evolved to become larger over time, a concept known as “Cope’s rule.” However, it is now clear that this isn’t always the case - and for a good reason.</p>



<p>“Animals can't just keep growing bigger and bigger. At some point, their physiology reaches a limit, and so does gravity. That’s why there are phases where body size reduces, allowing for a trend toward increased size later on,” Scherz said.&nbsp;</p>



<p>“We also think that small size might be where the really big innovations happen, which we then see expanded when the descendants get bigger again. That makes these miniaturized animals particularly exciting to study when we’re trying to figure out how innovations evolve in nature.”</p>



<h2 class="wp-block-heading" id="h-an-overlooked-phenomenon-nbsp">An overlooked phenomenon&nbsp;</h2>



<p>For decades, miniature animals have been somewhat overlooked in favor of studying large species like blue whales and elephants. </p>



<p>Some of the biggest discoveries in the field of miniaturization date back to the 1990s, with fewer recent advancements.</p>



<p>“Everyone’s attention is on <a href="https://www.earth.com/news/blue-whales-continue-their-battle-for-survival/" target="_blank" rel="noreferrer noopener">blue whales</a> and elephants. Any child you ask can tell you about the largest land mammal and the largest marine mammal and the largest dinosaur that has ever lived,” said Scherz.</p>



<p>“But scaling up and getting bigger is not a big problem. It is a far more impressive feat to have (practically) everything in a twenty-three-ton blue whale compressed into a seven-millimeter package.”</p>



<p>However, interest in miniaturization is experiencing a resurgence, partly due to exciting new discoveries. </p>



<p>Earlier this year, researchers in Brazil found the world’s smallest vertebrate, the flea frog, measuring just seven millimeters in length. This discovery has reignited curiosity about the biological processes behind miniaturization.</p>



<p>“We live at a time when probably the smallest vertebrates ever are around us, but they are too easy to overlook, so we just forget about them. This project will allow us to gain a genetic understanding of what controls this 'miniaturization process' and investigate whether there is something that keeps animals from becoming even smaller,” Scherz concluded.</p>



<p>-----</p>



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<p>-----</p>

Why do some animals evolve to become miniature?

Flea toads, despite being just seven millimeters in length, are...

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<p>Today’s <strong>Video of the Day</strong> 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.</p>



<p>"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.</p>



<p>"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."</p>



<p><em>Video/ Image Credit: ESA</em></p>



<p><em>-</em><em>--</em></p>



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

Nushagak Bay in southwest Alaska

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<p>Today's <strong>Video of the Day</strong> 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.</p>



<p>"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.</p>



<p>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.</p>



<p><em>Video/ Image Credit: American Chemical Society&nbsp;</em></p>



<p><em>-</em><em>--</em></p>



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



<p>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.</p>

Flu viruses are more flexible than expected

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<p>Today’s <strong>Video of the Day</strong> 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;</p>



<p>"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.</p>



<p>"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."</p>



<p>"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."</p>



<p><em>Video/Image Credit: ESA&nbsp;</em></p>



<p><em>-</em><em>--</em></p>



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

Lake Trasimeno in Central Italy

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<p>Today's <strong>Video of the Day</strong> 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;</p>



<p>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;</p>



<p>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.</p>



<p><em>Video Credit: American Chemical Society&nbsp;</em></p>



<p><em>-</em><em>--</em></p>



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



<p>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.</p>

Detecting mercury contamination with the tap of a finger

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<p>Today’s <strong>Video of the Day</strong> from the <a href="https://www.esa.int/">European Space Agency</a> features Kainji Lake, a reservoir on the Niger River.</p>



<p>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;</p>



<p>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;</p>



<p>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. </p>



<p>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.</p>



<p>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. </p>



<p><em>Video/ Image Credit: European Space Agency&nbsp;</em></p>



<p><em>-</em><em>--</em></p>



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



<p>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.</p>

Kainji Lake in north central Nigeria

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<p>Today’s <strong>Video of the Day</strong> 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.</p>



<p>“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. </p>



<p>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.</p>



<p>“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;</p>



<p>“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.”</p>



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



<p>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.</p>



<p><em>Video Credit: Amanda Nguyen/University of Illinois</em></p>



<p><em>-</em><em>--</em></p>



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



<p>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.</p>

Designing crops that can beat the heat

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<p>Yumna spent the majority of the following weeks scouring the internet for information on the various dog breeds, in hopes of finding the perfect one. This was a big deal to her, and there was no room for mistakes. The more she learned of the variety of breeds to choose from, the more difficult her decision became.</p>


Putting In The Work