Today's Image of the Day from the European Space Agency features the barred spiral galaxy NGC 1559, located around 35 million light-years away in the little-observed southern constellation Reticulum. The image was captured by the James Webb Space Telescope.&nbsp;



<h2 class="wp-block-heading" id="h-fuel-for-star-formation">Fuel for star formation </h2>



"The data featured in this portrait make use of two of Webb’s instruments: the Mid-InfraRed Instrument (MIRI) and Near-InfraRed Camera (NIRCam)," noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



"Here MIRI captures the glow of interstellar dust grains, which trace out the interstellar medium, the fuel for future star formation. NIRCam shows the light from stars, even young stars hidden behind prodigious amounts of dust. NIRCam also captures emission from ionised nebulae around young stars."



<h2 class="wp-block-heading" id="h-webb-reveals-galaxies-in-new-light">Webb reveals galaxies in new light</h2>



According to ESA, the data was collected by the <a href="https://sites.google.com/view/phangs/home">PHANGS team</a> as part of a program in which Webb will observe 55 <a href="https://www.earth.com/news/james-webb-captures-galaxies-that-are-too-old-to-exist/">galaxies</a> that have also been mapped by the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope, the Hubble Space Telescope, and more.&nbsp;



"By combining Webb’s unprecedented view of the dust and stars with data from these other facilities, the team aims to obtain a new, highly detailed view of how stars are born, live, and die in galaxies across the Universe."



<h2 class="wp-block-heading" id="h-ngc-1559-a-loner-in-space">NGC 1559: A loner in space</h2>



Although NGC 1559 appears to sit close to one of our nearest neighbors in the sky - the Large Magellanic Cloud (LMC) - this is just a trick of perspective, noted ESA.



While it is part of the Reticulum constellation, NGC 1559 is not part of the Local Group of galaxies but instead resides in a more distant region of space.



"In reality, NGC 1559 is physically nowhere near the LMC in space; in fact it truly is a loner, lacking the company of any nearby galaxies or membership of any galaxy cluster."



<h2 class="wp-block-heading" id="h-star-formation-in-ngc-1559">Star formation in NGC 1559</h2>



NGC 1559 is notable for its active star formation and strong magnetic fields. It has also been the site of several <a href="https://www.earth.com/news/supernova-explosions-could-damage-distant-planets/" target="_blank" rel="noreferrer noopener">supernovae</a>, making it of particular interest to astronomers studying stellar evolution and the lifecycle of stars.



The structure of NGC 1559 includes well-defined spiral arms that are rich in young, hot stars and regions of ionized gas, indicative of ongoing <a href="https://www.earth.com/news/black-hole-is-starving-its-host-galaxy-of-star-forming-fuel/" target="_blank" rel="noreferrer noopener">star formation</a>.



The galaxy’s central bar is believed to play a role in driving gas towards the core, fueling both the star formation and the activity around its nucleus.



<h2 class="wp-block-heading" id="h-an-extragalactic-wonder">An extragalactic wonder</h2>



Despite being relatively small compared to larger galaxies like the Milky Way, NGC 1559 is an important object for understanding how barred spiral galaxies evolve and the processes that trigger supernovae.



The galaxy’s remote location and active nature make it a fascinating subject of study in the field of extragalactic astronomy. The isolation of NGC 1559 allows for a clearer view of its structure without much interference from neighboring galaxies.



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



Barred spiral galaxies are a type of spiral galaxy characterized by a central bar-shaped structure composed of stars. This bar extends out from the core and connects to the galaxy's spiral arms, which swirl outward in a graceful pattern.



Scientists believe that the bar plays a crucial role in the evolution of the galaxy, funneling gas towards the core and potentially triggering star formation or feeding a central black hole. 



The <a href="https://www.earth.com/news/newly-discovered-stars-milky-way-are-old-as-universe/" target="_blank" rel="noreferrer noopener">Milky Way</a>, our own galaxy, is an example of a barred spiral. These galaxies are quite common in the universe, making up about two-thirds of all observed spiral galaxies.



The bar itself is thought to be a temporary feature, developing as the galaxy matures and possibly disappearing over time as the dynamics of the stars change. 



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



The Reticulum constellation is a small, faint constellation in the southern sky. Its name means "the reticle" in Latin, which refers to the crosshairs in an eyepiece of a telescope. 



The constellation was named in the 18th century by the French astronomer Nicolas Louis de Lacaille to honor the reticle he used in his scientific instruments. It is one of the 88 modern constellations recognized by the International Astronomical Union.



Image Credit: ESA/Webb, NASA &amp; CSA, A. Leroy, J. Lee and the PHANGS Team



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Spiral galaxy NGC 1559 is a loner in outer space

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

Today's Image of the Day from the European Space Agency features NGC 1792, a spiral galaxy located in the constellation Columba, about 43 million light-years away from Earth.&nbsp;



This galaxy, discovered by British astronomer James Dunlop in 1826, is part of the larger NGC 1808 group of galaxies.&nbsp;



<h2 class="wp-block-heading" id="h-intimate-view-of-ngc-1792">Intimate view of NGC 1792</h2>



“An orange glow radiates from the center of NGC 1792, the heart of this stellar forge. Captured by the NASA/ESA Hubble Space Telescope, this intimate view of NGC 1792 gives us some insight into this galactic powerhouse,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



“The vast swathes of tell-tale blue seen throughout the galaxy indicate areas that are full of young, hot stars, and it is in the shades of orange, seen nearer the center, that the older, cooler stars reside.”



<h2 class="wp-block-heading" id="h-vigorous-star-formation-nbsp">Vigorous star formation&nbsp;</h2>



NGC 1792 is notable for its vigorous star formation, classifying it as a starburst galaxy. This high rate of star formation is thought to be triggered by gravitational interactions with neighboring galaxies, though the exact cause is still under study.



“Nestled in the constellation of Columba (The Dove), NGC 1792 is both a spiral galaxy, and a starburst galaxy,” said ESA. “Within starburst galaxies, stars are forming at comparatively exorbitant rates. The rate of star formation can be more than 10 times faster in a starburst galaxy than in the Milky Way.”



<h2 class="wp-block-heading" id="h-fierce-bursts-of-star-formation">Fierce bursts of star formation</h2>



ESA noted that when galaxies have a large reservoir of gas, like NGC 1792, these short-lived starburst phases can be sparked by galactic events such as mergers and tidal interactions.&nbsp;



“One might think that these starburst galaxies would easily consume all of their gas in a large forming event. However, supernova explosions and intense stellar winds produced in these powerful starbursts can inject energy into the gas and disperse it.”&nbsp;



“This halts the star formation before it can completely deplete the galaxy of all its fuel. Scientists are actively working to understand this complex interplay between the dynamics that drive and quench these fierce bursts of star formation.”



Due to its distance and brightness, NGC 1792 can be observed with medium-sized telescopes under favorable conditions.



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



Galaxy evolution refers to the process by which galaxies form and change over time. It begins in the early universe, shortly after the <a href="https://www.earth.com/news/new-observations-disprove-big-bang-theory-universe-began-tired-light-theory/" target="_blank" rel="noreferrer noopener">Big Bang</a>, when small density fluctuations in the primordial gas led to the collapse of matter into the first galaxies. 



<h3 class="wp-block-heading" id="h-galaxy-mergers">Galaxy mergers</h3>



These early galaxies were small and irregular, composed mostly of gas and dark matter. Over billions of years, galaxies grew larger by merging with one another and by accreting gas from the surrounding space.&nbsp;



These interactions often triggered bursts of star formation, and collisions between galaxies sometimes led to the creation of new, more massive galaxies.



<h3 class="wp-block-heading" id="h-structural-changes">Structural changes</h3>



As galaxies evolve, their morphology - their shape and structure - can change. Early galaxies were often irregular or disk-shaped, but over time, many galaxies formed into the elliptical or spiral shapes we see today.&nbsp;



<h3 class="wp-block-heading" id="h-star-formation">Star formation</h3>



Star formation is a key driver of galaxy evolution, but it gradually slows down as galaxies age. 



The gas that fuels <a href="https://www.earth.com/news/black-hole-is-starving-its-host-galaxy-of-star-forming-fuel/" target="_blank" rel="noreferrer noopener">star formation</a> can be used up, or it can be heated and pushed out of galaxies by supernovae or black holes, reducing the galaxy's ability to form new stars.



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



The environment in which a galaxy resides also plays a role in its evolution. Galaxies in dense clusters are more likely to interact with their neighbors, which can alter their shape or trigger bursts of star formation.&nbsp;



In contrast, galaxies in more isolated regions of space evolve more slowly and without as many dramatic interactions.



<h3 class="wp-block-heading" id="h-dark-matter">Dark matter</h3>



Dark matter also plays a crucial role in galaxy evolution. It provides the gravitational framework that holds galaxies together and influences their interactions with one another.&nbsp;



Supermassive <a href="https://www.earth.com/search-results/?search=Galaxies%20merge&amp;start=0" target="_blank" rel="noreferrer noopener">black holes</a>, found at the centers of most large galaxies, can also affect their evolution by releasing energy that impacts star formation and the movement of gas within the galaxy.



Overall, galaxy evolution is a complex and ongoing process driven by interactions between stars, gas, <a href="https://www.earth.com/news/study-dark-matter-does-not-exist-and-the-universe-is-27-billion-years-old/" target="_blank" rel="noreferrer noopener">dark matter</a>, and black holes, and shaped by both internal processes and external influences.



Image Credit: ESA/Hubble &amp; NASA, J. Lee



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NGC 1792: A galactic powerhouse 

Today's Image of the Day from NASA Earth Observatory features the Fedchenko Glacier in the Pamir Mountains of Tajikistan. It is one of the world's longest glaciers outside of the polar regions.&nbsp;



“An astronaut aboard the International Space Station took this photo of glaciers in the high-elevation valleys of the Pamir Mountains of Central Asia. The upper portion of Fedchenko Glacier crosses the center of the scene.”



NASA noted that most of the larger glaciers in the image show a prominent pattern of light- and dark-brown parallel lines.&nbsp;



“The darker ‘streamlines,’ known as medial moraines, give a sense of the direction of flow of the ice down the valleys. These are concentrations of debris that has been eroded by the glacier from the adjacent mountainsides or a rocky outcrop,” said NASA.



<h2 class="wp-block-heading" id="h-fedchenko-a-high-altitude-glacier">Fedchenko: A high-altitude glacier</h2>



Fedchenko Glacier stretches for approximately 48 miles and covers an area of around 270 square miles. This massive glacier is a critical source of <a href="https://www.earth.com/news/satellites-reveal-a-sudden-drop-in-global-freshwater-levels/" target="_blank" rel="noreferrer noopener">freshwater</a>, feeding several rivers and influencing the region's hydrology.



Fedchenko Glacier lies at high altitudes, with its origins in the high peaks of the Pamirs, where snow accumulates heavily. Despite being situated in a relatively arid region, the glacier's significant size and volume are maintained by substantial snowfall.&nbsp;



Named after Alexei Pavlovich Fedchenko, a Russian explorer and naturalist, the glacier was first surveyed in 1928 during Soviet-era expeditions. It plays a crucial role in climate studies, as changes in its length and mass provide insights into the effects of global warming in Central Asia.&nbsp;



The glacier is also part of a spectacular and remote landscape, surrounded by towering <a href="https://www.earth.com/news/early-humans-preferred-the-mountains-and-it-changed-our-evolution/" target="_blank" rel="noreferrer noopener">mountains</a> and rugged terrain, making it a key feature of the Pamirs' natural beauty.&nbsp;



<h2 class="wp-block-heading" id="h-threats-to-glaciers-worldwide">Threats to glaciers worldwide</h2>



Like many glaciers worldwide, Fedchenko faces the threat of retreat due to <a href="https://www.earth.com/news/peru-has-lost-over-half-of-its-glaciers-in-six-decades/" target="_blank" rel="noreferrer noopener">global warming</a>, raising concerns about water availability and ecosystem changes in the region.



Rising global temperatures caused by greenhouse gas emissions are the primary driver of glacier melting. Warmer temperatures not only melt glacier surfaces but also increase the flow of meltwater beneath them, accelerating their disintegration.



<h3 class="wp-block-heading" id="h-human-activities-and-pollution-nbsp">Human activities and pollution&nbsp;</h3>



Deforestation and urbanization exacerbate these effects by reducing reflective snow cover and increasing heat absorption in nearby areas.&nbsp;



Airborne pollutants like soot and black carbon darken glacier surfaces, reducing their ability to reflect sunlight and speeding up the rate of melting. 



Industrial activities and tourism in glacier regions add physical stress and pollution, further degrading these fragile ecosystems.



<h3 class="wp-block-heading" id="h-water-supplies">Water supplies</h3>



The loss of glaciers has far-reaching consequences. It disrupts freshwater supplies for millions of people who depend on glacial runoff for drinking water, agriculture, and hydropower.&nbsp;



<h3 class="wp-block-heading" id="h-rising-sea-levels">Rising sea levels</h3>



<a href="https://www.earth.com/news/melting-glaciers-unleash-invasive-species-into-unexpected-areas/" target="_blank" rel="noreferrer noopener">Melting glaciers</a> contribute to rising sea levels, threatening coastal communities and ecosystems worldwide. Additionally, the loss of glaciers impacts biodiversity, as many species rely on cold, glacial habitats for survival.



<h3 class="wp-block-heading" id="h-protecting-glaciers">Protecting glaciers</h3>



Efforts to mitigate these threats focus on reducing <a href="https://www.earth.com/news/melting-glaciers-are-hidden-sources-of-greenhouse-gases/" target="_blank" rel="noreferrer noopener">greenhouse gas</a> emissions, protecting glacier regions from industrial exploitation, and promoting sustainable tourism practices.&nbsp;



However, without urgent action, the continued decline of glaciers will have profound implications for the planet's climate, water systems, and ecosystems.



<h2 class="wp-block-heading" id="h-the-pamir-mountains-nbsp">The Pamir Mountains&nbsp;</h2>



The Pamir Mountains, often called the "Roof of the World," are a vast and rugged mountain range located in Central Asia.&nbsp;



They span across Tajikistan, Afghanistan, China, and Kyrgyzstan, forming a vital part of the junction where the Himalayas, the Tian Shan, the Karakoram, the Kunlun, and the Hindu Kush converge.&nbsp;



With peaks soaring over 7,000 meters, including Ismoil Somoni Peak, the range is home to some of the highest altitudes on Earth.



The Pamir Mountains have been central to trade and cultural exchange for centuries, serving as a critical segment of the ancient Silk Road.&nbsp;



Today, the mountains are a popular destination for trekkers and explorers drawn by their breathtaking beauty and challenging terrain.



The Pamirs are not only a natural wonder but also a biological treasure trove, supporting unique wildlife that is adapted to extreme altitudes.&nbsp;



Culturally, the mountains are home to diverse communities, each with its unique traditions and ways of life, shaped by the harsh but majestic environment.



Image Credit: NASA Earth Observatory



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Fedchenko Glacier in the Pamir Mountains

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

Today's Image of the Day from the European Space Agency features the spiral galaxy IC 5332, which is located over 29 million light-years away from Earth.



The galaxy spans approximately 66,000 light-years in diameter. This makes it notably smaller than our <a href="https://www.earth.com/news/large-amount-of-dark-matter-may-be-missing-from-the-milky-way/" target="_blank" rel="noreferrer noopener">Milky Way</a>, which is just over 100,000 light-years in diameter. 



<h2 class="wp-block-heading" id="h-unprecedented-look-at-ic-5332">Unprecedented look at IC 5332</h2>



In a stunning photo release by NASA and ESA in 2022, the spiral galaxy IC 5332 was presented in an unprecedented level of detail. The images were captured by the <a href="https://www.earth.com/news/james-webb-captures-incredible-new-image-of-uranus/" target="_blank" rel="noreferrer noopener">James Webb Space Telescope</a>.



This feat was made possible through the use of the Mid-InfraRed Instrument (MIRI), which captures images in the mid-infrared spectrum.



<h2 class="wp-block-heading" id="h-unique-perspective-from-earth">Unique perspective from Earth</h2>



One of the most striking features of IC 5332, as revealed by these observations, is its almost perfect face-on orientation relative to Earth.&nbsp;



This unique perspective allows astronomers to clearly observe and admire the symmetrical arrangement of its spiral arms.



<h2 class="wp-block-heading" id="h-webb-unveils-ic-5332-in-new-light">Webb unveils IC 5332 in new light</h2>



The clarity of these images represents a significant advancement over previous observations made by the Hubble Space Telescope, which imaged IC 5332 in ultraviolet and visible light.&nbsp;



While Hubble’s images revealed the galaxy’s symmetrical spiral arms, James Webb’s MIRI has unveiled these structures as a complex web of gas that emits infrared light at various temperatures.



<h2 class="wp-block-heading" id="h-the-miri-instrument-on-james-webb-nbsp">The MIRI instrument on James Webb&nbsp;</h2>



Capturing this range of infrared light is no simple task. It requires highly specialized instruments that must be maintained at extremely cold temperatures.&nbsp;



The MIRI instrument on the James Webb Space Telescope is specifically designed for this purpose and performs exceptionally well. Its capabilities allow astronomers to see aspects of <a href="https://www.earth.com/news/james-webb-captures-galaxies-that-are-too-old-to-exist/" target="_blank" rel="noreferrer noopener">galaxies</a> that are otherwise hidden in other wavelengths.



The detailed images provided by MIRI offer more than just a visual spectacle; they provide valuable data about the composition and temperature of the gases that make up the spiral arms of IC 5332. 



This can help scientists understand the processes of star formation within the galaxy and how these processes compare to those in our own <a href="https://www.earth.com/news/stars-at-the-edge-of-our-milky-way-galaxy-travel-more-slowly/" target="_blank" rel="noreferrer noopener">Milky Way</a>.



<h2 class="wp-block-heading" id="h-webb-finds-hidden-features-of-the-universe-nbsp">Webb finds hidden features of the universe&nbsp;</h2>



The images of IC 5332 served as a critical test of the James Webb Space Telescope’s capabilities in observing the universe in infrared light. 



As astronomers continue to explore with Webb’s full suite of instruments, many more hidden features of the universe will be revealed.



The information provided by the <a href="https://www.earth.com/news/webb-telescope-discovers-second-most-distant-galaxy-in-pandoras-cluster/" target="_blank" rel="noreferrer noopener">James Webb Space Telescope</a> not only expands our understanding of the cosmos but also enhances our appreciation for the complex and beautiful structures that exist in our universe.&nbsp;



<h2 class="wp-block-heading" id="h-spiral-galaxies-like-ic-5332">Spiral galaxies like IC 5332</h2>



Spiral galaxies are some of the most visually striking objects in the universe, characterized by their rotating arms that extend from a central nucleus, giving them a distinct spiral appearance.&nbsp;



These galaxies are primarily made up of a flat, rotating disk containing stars, gas, and dust, and a central concentration of stars known as the bulge. These are often surrounded by a much fainter halo of stars, many of which reside in globular clusters.



Spiral galaxies differ from other galaxy types, such as elliptical and irregular galaxies, in their structure and content. 



The spiral arms are sites of ongoing star formation and are brighter than the rest of the disk because of the young, hot stars that are typically found there. The arms appear distinct because of their density waves, which compress the gas and dust, leading to star formation.



The rotation of the spiral arms also contributes to the galaxy's flat shape due to the centrifugal forces acting on the disk. The central bulge can vary in size and often contains older, red stars.&nbsp;



<h2 class="wp-block-heading" id="h-barred-spiral-galaxies-nbsp">Barred spiral galaxies&nbsp;</h2>



Some spiral galaxies have a bar-shaped structure that extends from the central bulge, making them barred spirals. This bar affects the motion of stars and gas within the galaxy and can influence star formation activity.



Spiral galaxies are an important focus of study because they contain a significant amount of visible matter and play a crucial role in understanding the formation and evolution of galaxies.&nbsp;



Their distinct features also make them particularly useful for studying the laws of physics under extreme conditions, such as high densities and velocities.



Image Credit: <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>/Webb, NASA &amp; CSA, J. Lee and the PHANGS-JWST and PHANGS-HST Teams



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Spiral galaxy IC 5332: A complex web of gas and light

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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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Young, massive stars in the Triangulum Galaxy

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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



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



Image Credit: NASA Earth Observatory&nbsp;



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Ruki River in the Democratic Republic of the Congo

It turned out that Yuki had cancer that, unfortunately, was terminal. While the team had dealt with that particular cancer before, they knew Yuki was a fighter and would hopefully persevere through it as long as he could. Yuki had been fighting <a href="https://www.earth.com/news/first-human-injected-with-groundbreaking-cancer-killing-virus/">cancer</a> for a while, so the team made sure that they would make the best of their time with their favorite wolfdog. But Yuki had already made his mark…

Bad News

The devastating rainfall from Storm Boris, which caused severe flooding across Central and Eastern Europe, could have been nearly nine percent less intense without the current levels of global warming. This is the conclusion of a recent analysis from the Alfred Wegener Institute (AWI).



This finding was made possible by a novel modeling technique called “storylines,” which provides a new way to trace the fingerprints of climate change on <a href="https://www.earth.com/news/why-tens-of-millions-of-people-love-watching-videos-of-extreme-weather-events/" target="_blank" rel="noreferrer noopener">extreme weather events</a> in real time. 



This approach is described in the journal <a href="http://dx.doi.org/10.1038/s43247-024-01847-0" target="_blank" rel="noreferrer noopener">Communications Earth &amp; Environment</a> and is accessible via a new online tool developed by the <a href="https://www.awi.de/en/" target="_blank" rel="noreferrer noopener">Alfred Wegener Institute</a>.



<h2 class="wp-block-heading" id="h-the-impact-of-a-warmer-climate">The impact of a warmer climate</h2>



In mid-September, Storm Boris unleashed torrential rain across Poland, the Czech Republic, Austria, and Romania, resulting in catastrophic <a href="https://www.earth.com/news/can-we-outrun-the-flood-risks-of-climate-change/" target="_blank" rel="noreferrer noopener">flooding</a> and displacing countless families. 



Boris produced one of the highest rainfall totals ever recorded in several areas over a five-day period, and the floods claimed at least 27 lives. While cleanup is underway, public and media inquiries are focusing on whether global climate change played a role in this tragic event.



“For the past few years, science has been able to provide robust answers to this absolutely legitimate question,” said lead author Marylou Athanase, a climate physicist at AWI.&nbsp;



“As early as one or two weeks after a given event, so-called probabilistic attribution studies can be used to draw initial conclusions on how much more probable the event was, due to climate change.”



<h2 class="wp-block-heading" id="h-connecting-climate-trends-and-weather-events">Connecting climate trends and weather events</h2>



Yet explaining these probabilities to the public has often proven challenging. Probabilistic studies, while valuable, may lack clarity when connecting global climate trends with specific weather events.&nbsp;



“That’s why we at the AWI have worked so hard to advance a totally new way - the ‘storyline’ approach,” explained co-lead author Antonio Sánchez-Benítez.&nbsp;



“Essentially, we apply the ‘what if?’ principle. What would a given catastrophe look like in a world without <a href="https://www.earth.com/news/climate-change-earth-energy-imbalance-temperature-rise/" target="_blank" rel="noreferrer noopener">climate change</a>? And what about in a climate that was even warmer?”



<h2 class="wp-block-heading" id="h-climate-impact-on-specific-storms">Climate impact on specific storms</h2>



Using the storm as a case study, AWI’s team illustrated the power of this approach. Their analysis showed that, if not for climate change, Storm Boris would have dropped about nine percent less rain.&nbsp;



On its journey from the eastern Mediterranean toward Central Europe, Boris intensified as it encountered water roughly two degrees Celsius warmer than preindustrial levels, which increased the water vapor in the atmosphere.&nbsp;



While nine percent may sound minimal, it can make a significant difference in areas where the additional water exceeds the capacity of rivers, dams, or drainage systems, leading to potentially devastating consequences.



<h2 class="wp-block-heading" id="h-climate-models-and-real-world-weather">Climate models and real-world weather</h2>



One of the key challenges was to accurately connect long-term climate modeling with the actual, observed conditions of specific weather events.&nbsp;



To address this, the team used a process called “nudging,” where actual wind data, including jet stream information, is fed into the model to align it more closely with real-world conditions.&nbsp;



“Climate models normally simulate a specific, quasi-random sequence of weather conditions,” explained Helge Gößling, a climate physicist and head of storyline research at AWI.&nbsp;



“With nudging, we provide the model with actually observed <a href="https://www.earth.com/news/strong-winds-make-it-difficult-for-albatrosses-to-feed/" target="_blank" rel="noreferrer noopener">wind</a> data, and we nudge the model a bit in the direction of the actually observed wind. In this way, we can accurately reproduce real weather in the real climate.”



<h2 class="wp-block-heading" id="h-quantifying-the-influence-of-global-warming-nbsp">Quantifying the influence of global warming&nbsp;</h2>



In their models, the researchers could simulate a pre-climate change world by reducing greenhouse gas levels and adjusting other variables.&nbsp;



By rerunning the scenario, they produced a side-by-side comparison of current and hypothetical climates. This approach allows scientists to quantify the influence of global warming on specific events, from extreme storms to more typical weather patterns.



<h2 class="wp-block-heading" id="h-advanced-climate-data-and-technology">Advanced climate data and technology</h2>



The researchers used the CMIP6 version of the AWI climate model, which contributed to the IPCC’s Sixth Assessment Report, incorporating real-time wind data from the <a href="https://www.ecmwf.int/" target="_blank" rel="noreferrer noopener">European Center for Medium-Range Weather Forecasts</a> (ECMWF). 



“We have since automated the system to the point where daily analyses on the current weather are run on the supercomputer at the <a href="https://www.dkrz.de/en/about-en/about-us" target="_blank" rel="noreferrer noopener">German Climate Computing Center</a> (DKRZ),” Athanase said



The results are then made available to the public on AWI’s online platform. This <a href="https://climate-storylines.awi.de/" target="_blank" rel="noreferrer noopener">tool</a>, updated with a three-day lag from real-time, provides users with access to maps and interactive timelines showing the “Climate Change Signal of the Day” for extreme and daily weather events worldwide.



<h2 class="wp-block-heading" id="h-climate-science-and-public-understanding-nbsp">Climate science and public understanding&nbsp;</h2>



By offering a visual and interactive way to examine climate change’s influence, AWI hopes to bridge the gap between complex climate science and public understanding.&nbsp;



For now, the tool tracks temperature and precipitation data starting from January 2024, allowing users to explore climate impacts on recent weather events.&nbsp;



“Our goal is to promote a better understanding of the connections between climate change and extreme weather events, and to supply concrete and timely answers that can also be used in media coverage of these events,” Athanase said.



The AWI’s storyline model and online tool represent an innovative step forward in climate science communication, helping researchers, decision-makers, and the public see, in real terms, how global warming affects <a href="https://www.earth.com/news/pollen-alters-cloud-formation-and-changes-weather-patterns/" target="_blank" rel="noreferrer noopener">weather patterns</a> and extreme events.



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How much does climate change influence extreme weather events?

The devastating rainfall from Storm Boris, which caused severe flooding...

Curiosity, the renowned Mars rover from NASA, is enriching our understanding of the Red Planet's mysterious landscapes and puzzling geological features.



Around the corner awaits a new expedition for Curiosity, this time to investigate a formation known as a boxwork. This intriguing network of patterns lies in a region at the foot of Mount Sharp and promises even more fascinating discoveries. 



<h2 class="wp-block-heading" id="h-curiosity-finds-yellow-sulfur-stones">Curiosity finds yellow sulfur stones</h2>



Before embarking on this new quest, Curiosity bids farewell to <a href="https://www.earth.com/news/nasas-curiosity-rover-explores-mars-ridge-with-intriguing-watery-past/" target="_blank" rel="noreferrer noopener">Gediz Vallis</a>, a channel that is shrouded in enigma.



Details of the formation of this channel during a period of transition to a drier climate continue to elude scientists. 



But it is not just the channel that piques their interest. Curiosity stumbled upon a strange field of yellow sulfur stones during the summer, literally crushing them with its wheels as it drove along. This adds another layer of mystery to the Martian puzzle.



Before moving out, Curiosity provided scientists with invaluable imagery. The rover captured 360-degree panoramas of the stones, along with channel features, making sure no detail was overlooked.



<div class="wp-block-sendtonews-playerselector">[sendtonews key="cczO1PejFp-4040684-12187" type="single"]</div>



<h2 class="wp-block-heading" id="h-the-quest-for-ancient-life">The quest for ancient life</h2>



A fundamental purpose of the rover's mission is probing <a href="https://www.earth.com/news/new-evidence-found-for-life-on-mars-where-ancient-rivers-once-flowed/" target="_blank" rel="noreferrer noopener">Mars' past</a>, with the hope of finding traces of ancient life.



Billions of years ago, Mars was flush with lakes and rivers, potentially creating conditions conducive to microbial life. 



Nestled in the foothills of Mount Sharp, which is a towering mountain, Gediz Vallis might hold the key to understanding <a href="https://www.earth.com/news/how-mars-became-uninhabitable-after-being-life-supporting-ocean-world/" target="_blank" rel="noreferrer noopener">how Mars looked</a> as water dwindled on its surface.



Scientists aren't just interested in understanding the climate shift. The team is also investigating different features within the channel, including a debris mound aptly nicknamed “Pinnacle Ridge.”



Evidence suggests that rivers, wet debris flows, and dry avalanches have all left their signatures on this formation.



Intriguingly, the process of constructing a timeline of these events is well underway.



<h2 class="wp-block-heading" id="h-sulfur-stones-the-latest-martian-mystery">Sulfur stones: The latest Martian mystery</h2>



The sprawling field of sulfur stones, originally appearing as an unremarkable patch of light-colored terrain in images from NASA’s <a href="https://www.earth.com/news/stunning-photo-of-martian-space-potato-moon-phobos/" target="_blank" rel="noreferrer noopener">Mars Reconnaissance Orbiter</a>, has sprung a pleasant surprise.



A close inspection by Curiosity revealed that these sulfur stones were teeming with yellow crystals, a find unlike anything seen on Mars before.



The rover's instruments confirmed that the stones were pure sulfur - an unusual occurrence that raises more questions than it answers.



On our home planet, sulfur is usually linked with the presence of <a href="https://www.earth.com/news/water-frost-detected-on-mars-enormous-volcanoes/" target="_blank" rel="noreferrer noopener">volcanoes</a> and hot springs. Yet, no evidence on Mount Sharp suggests these phenomena as likely candidates.



Ashwin Vasavada is a Curiosity project scientist at NASA’s <a href="https://search.app?link=https%3A%2F%2Fwww.jpl.nasa.gov%2F&amp;utm_campaign=aga&amp;utm_source=agsadl2%2Csh%2Fx%2Fgs%2Fm2%2F4" target="_blank" rel="noreferrer noopener">Jet Propulsion Laboratory</a> in Southern California.



“We looked at the sulfur field from every angle - from the top and the side - and looked for anything mixed with the sulfur that might give us clues as to how it formed. We’ve gathered a ton of data, and now we have a fun puzzle to solve," said Vasavada.



<h2 class="wp-block-heading" id="h-treading-on-martian-spiderwebs">Treading on Martian "spiderwebs"</h2>



Having completed a thorough survey of the Gediz Vallis, Curiosity is all set to traverse the edge of the channel, capturing a few more panoramas before making its way to the boxwork region.



This formation of ridges, likened to spiderwebs sprawling across the surface, is believed to be linked to minerals settling into rock crevices and hardening over time. They have been left behind as the surrounding rock eroded.



“These ridges will include minerals that crystallized underground, where it would have been warmer, with salty liquid water flowing through. Early Earth microbes could have survived in a similar environment. That makes this an exciting place to explore,” said Kirsten Siebach, a Curiosity scientist from <a href="https://www.rice.edu/" target="_blank" rel="noreferrer noopener">Rice University</a> in Houston.



<h2 class="wp-block-heading" id="h-the-curious-legacy-of-curiosity">The curious legacy of Curiosity</h2>



Curiosity, a brainchild of NASA’s Jet Propulsion Laboratory managed by Caltech, continues to be a cornerstone of Martian exploration for NASA’s Science Mission Directorate. 



The Mars Reconnaissance Orbiter Project, under the management of the <a href="https://www.arizona.edu/" target="_blank" rel="noreferrer noopener">University of Arizona</a>, and its High-Resolution Imaging Science Experiment (HiRISE) instrument, constructed by BAE Systems, also play significant roles in taking our understanding of Mars to new heights.



Video Credit: NASA/JPL-Caltech/MSSS



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Sulfur stones and spiderwebs: Curiosity's latest discoveries on Mars

Curiosity, the renowned Mars rover from NASA, is enriching our...

A new study suggests that individual cells might be capable of learning - a behavior once thought exclusive to organisms with brains and complex nervous systems. 



The research, led by scientists at the <a href="https://www.crg.eu/" target="_blank" rel="noreferrer noopener">Center for Genomic Regulation</a> (CRG) in Barcelona and <a href="https://hms.harvard.edu/" target="_blank" rel="noreferrer noopener">Harvard Medical School</a> in Boston, challenges long-standing assumptions about the fundamental capabilities of cells.



“Rather than following pre-programmed genetic instructions, <a href="https://www.earth.com/news/animal-cells-capable-of-photosynthesis-created-for-the-first-time/" target="_blank" rel="noreferrer noopener">cells</a> are elevated to entities equipped with a very basic form of decision making based on learning from their environments,” explained study co-author Jeremy Gunawardena, an associate professor of systems biology at Harvard Medical School. 



The findings, published in <a href="http://dx.doi.org/10.1016/j.cub.2024.10.041" target="_blank" rel="noreferrer noopener">Current Biology</a>, could transform our understanding of life at its most basic level.



<h2 class="wp-block-heading" id="h-habituation-learning-without-a-brain">Habituation: Learning without a brain</h2>



The researchers focused on habituation, a simple form of learning where an organism gradually stops responding to a repeated stimulus - like how humans tune out the ticking of a clock or flashing lights.&nbsp;



While habituation has been extensively studied in animals with <a href="https://www.earth.com/news/how-black-widow-venom-attacks-the-nervous-system/" target="_blank" rel="noreferrer noopener">nervous systems</a>, whether similar behavior exists at the cellular level has been a contentious question.



Early experiments in the 20th century observed behavior resembling learning in the single-celled ciliate Stentor roeselii, but the findings were largely dismissed. In the 1970s and 1980s, more evidence of habituation emerged in other ciliates, and modern experiments have continued to build on these insights.



“These creatures are so different from animals with brains,” said Rosa Martinez, a co-author of the study and researcher at the CRG.



“To learn would mean they use internal molecular networks that somehow perform functions similar to those carried out by networks of neurons in brains. Nobody knows how they are able to do this, so we thought it is a question that needed to be explored.”&nbsp;



<h2 class="wp-block-heading" id="h-using-simulations-to-decode-cellular-learning">Using simulations to decode cellular “learning”</h2>



Instead of working with cells directly in the lab, the researchers turned to computer simulations to track the biochemical reactions that cells rely on to process information.&nbsp;



By simulating how molecular interactions change when exposed to repeated stimuli, the team uncovered evidence of <a href="https://www.earth.com/news/secrets-of-learning-how-our-brains-neurons-make-and-retrieve-memories/" target="_blank" rel="noreferrer noopener">learning</a>-like behavior.



The study focused on two common molecular circuits: negative feedback loops and incoherent feedforward loops.&nbsp;



Negative feedback is like a thermostat - it regulates processes by turning them off when a certain threshold is reached.&nbsp;



Incoherent feedforward loops act like a motion-activated light with a timer, triggering a process and its inhibitor simultaneously.



<h2 class="wp-block-heading" id="h-memories-formed-at-the-cellular-level">Memories formed at the cellular level</h2>



Simulations revealed that cells use these circuits to fine-tune their responses to repeated stimuli, replicating hallmark features of habituation seen in animals.&nbsp;



A critical discovery was the role of “timescale separation,” where some biochemical reactions occur much faster than others.



“We think this could be a type of ‘memory’ at the cellular level, enabling cells to both react immediately and influence a future response,” Martinez explained.



<h2 class="wp-block-heading" id="h-bridging-neuroscience-and-cognitive-science">Bridging neuroscience and cognitive science</h2>



The findings also offer new insights into a long-standing debate between neuroscientists and cognitive researchers about habituation.&nbsp;



Neuroscientists argue that stronger habituation occurs with more frequent or less intense stimuli, while cognitive scientists emphasize internal changes, finding habituation stronger with less frequent or more intense stimuli.



The study showed that both perspectives are valid. During habituation, cells respond less to frequent or weak stimuli, but after habituation, their response to similar stimuli is stronger.&nbsp;



“Neuroscientists and cognitive scientists have been studying processes which are basically two sides of the same coin,” Gunawardena said. “We believe that single cells could emerge as a powerful tool to study the fundamentals of learning.”



<h2 class="wp-block-heading" id="h-the-ability-of-cells-to-learn-and-remember-nbsp">The ability of cells to learn and remember&nbsp;</h2>



If confirmed through real-world experiments, these findings could have profound implications.&nbsp;



The ability of cells to “remember” might explain phenomena like cancer cells developing resistance to chemotherapy or <a href="https://www.earth.com/news/antibiotic-resistant-bacteria-have-been-found-in-clouds/" target="_blank" rel="noreferrer noopener">bacteria</a> becoming resistant to antibiotics. Both involve cells appearing to “learn” from their environment to survive.



The researchers used mathematical models to test various scenarios quickly, identifying those worth exploring in laboratory settings. This approach could save time and resources while accelerating discoveries.



<h2 class="wp-block-heading" id="h-a-computational-approach-to-biology">A computational approach to biology</h2>



“The moonshot in computational biology is to make life as programmable as a computer, but lab experiments can be costly and time-consuming,” Martinez said.&nbsp;



Her team works at the <a href="https://barcelonacollaboratorium.com/" target="_blank" rel="noreferrer noopener">Barcelona Collaboratorium</a>, a joint initiative designed to use mathematical modeling to tackle big biological questions.



“Our approach can help us prioritize which experiments are most likely to yield valuable results, saving time and resources and leading to new breakthroughs,” noted Martinez. “We think it can be useful to address many other fundamental questions.”



This research marks a significant step toward understanding learning and memory at the cellular level, potentially reshaping our view of what individual cells are capable of and opening new doors for medical and scientific exploration.



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Biological breakthrough: Cells can ‘learn’ like brains

A new study suggests that individual cells might be capable...

Bad habits are repetitive behaviors or patterns that may have negative consequences on physical health, mental well-being, relationships, or productivity. 



They often develop unconsciously and can be challenging to break because they are reinforced by habit loops, which consist of a cue, a routine, and a reward.



But what if you could easily change your habits? What if you had the power to take control of your brain's habit-making mechanism and use it to your advantage?



Enter cognitive neuroscience, a field that offers fresh insights into how our brains form habits. In a recent study, scientists at Trinity College Dublin have proposed a new approach to changing habits that promise lasting results.



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



Led by Dr. Eike Buabang, postdoctoral research fellow in the lab of Professor Claire Gillan, the study explores how habits drive our daily lives.



"Habits play a central role in our daily lives, from making that first cup of coffee in the morning to the route we take to work, and the routine we follow to prepare for bed," said Dr. Buabang.



"Our research reveals why these <a href="https://www.earth.com/news/happiness-influences-online-shopping-habits/" target="_blank" rel="noreferrer noopener">automatic behaviors</a> are so powerful - and how we can harness our brain's mechanisms to change them."



<h2 class="wp-block-heading" id="h-two-brain-systems">Two brain systems</h2>



Our habits are driven by two brain systems. One triggers automatic responses to familiar cues, while the other enables goal-directed control.



Take, for instance, the habit of scrolling through social media when you're bored - this is the result of an automatic response system. But when you put your phone away to focus on work - that's the goal-directed brain control system at work.



When these two systems are imbalanced, it can lead to action slips like entering an old password instead of the new one. 



In more severe cases, it can contribute to compulsive behaviors seen in conditions such as obsessive-compulsive disorder, substance-use disorders, and eating disorders.



<h2 class="wp-block-heading" id="h-switching-from-bad-habits-to-good-ones">Switching from bad habits to good ones</h2>



Understanding the interplay between these two systems can pave the way for personal development and clinical treatment of compulsive disorders. 



"Good and bad habits are two sides of the same coin - both arise when automatic responses overpower goal-directed control. By understanding this dynamic, we can start to use it to our own advantage, to both make and break habits," noted Dr. Buabang.



<h2 class="wp-block-heading" id="h-factors-involved-in-habit-change">Factors involved in habit change</h2>



Dr. Buabang's research provides a playbook for behavior change, bridging brain science with practical applications. The framework describes several factors crucial for influencing the balance between automatic responses and <a href="https://www.earth.com/news/how-to-set-realistic-goals-and-achieve-them-in-2024/" target="_blank" rel="noreferrer noopener">goal-directed control</a>.



<h3 class="wp-block-heading" id="h-repetition-and-reinforcement">Repetition and reinforcement</h3>



Repeating a behavior builds strong associations between cues and responses, while rewarding the behavior makes it more likely to be repeated. 



The same mechanism can be leveraged to break habits, by replacing old behaviors with new ones to create competing automatic responses.



<h3 class="wp-block-heading" id="h-environment">Environment</h3>



Your surroundings play a significant role in habit change. Tweaking your environment to make desired behaviors easier to access encourages good habits, while removing cues that trigger unwanted behavior disrupts the bad ones.



<h3 class="wp-block-heading" id="h-goal-directed-system">Goal-directed system</h3>



Knowing how to engage your goal-directed system can help strengthen and weaken habits. 



However, stress, time pressure, and fatigue can trigger a return to old patterns, so staying mindful and intentional is crucial when trying to break them.



<h2 class="wp-block-heading" id="h-from-theory-to-real-world-applications">From theory to real-world applications</h2>



The theory doesn't stop at habit change; it also opens the door to personalizing treatments based on how different people <a href="https://www.earth.com/news/how-long-does-it-take-to-form-a-habit/" target="_blank" rel="noreferrer noopener">form</a> and break habits.



"We are all different; depending on your neurobiology, it might make more sense to focus on avoiding cues than reducing stress or allowing yourself more time for your daily routine," said Professor Gillan.



These insights have far-reaching implications. They could reshape public health strategies and help policymakers design more effective health campaigns. 



"By working with - rather than against - how our brains naturally form habits, we can create strategies that make healthier choices more automatic at both <a href="https://www.earth.com/news/shopping-habits-have-remained-consistent-for-3500-years/" target="_blank" rel="noreferrer noopener">individual</a> and societal levels," noted Professor Gillan.



In conclusion, this new approach to habit change has the potential to revolutionize both personal development and the treatment of compulsive disorders. 



The exciting findings from the <a href="https://www.tcd.ie" target="_blank" rel="noreferrer noopener">Trinity College Dublin</a> team have provided a new avenue for tapping into our brain's potential, making habit change achievable and lasting.



The study is published in the journal <a href="https://www.cell.com/trends/cognitive-sciences/fulltext/S1364-6613(24)00266-3?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS1364661324002663%3Fshowall%3Dtrue" target="_blank" rel="noreferrer noopener">Trends in Cognitive Sciences</a>.



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Brain science: A new approach to breaking bad habits

Bad habits are repetitive behaviors or patterns that may have...

There is a green deficit in our cities, and it's more serious than you think. A new study led by RMIT University in Australia highlights this glaring issue. The study measured access to nature in eight global cities and found most of them to be grossly deficient in canopy cover.



This is despite these cities having a significant number of <a href="https://www.earth.com/news/trees-have-an-amazing-ability-to-adapt-to-new-climates/" target="_blank" rel="noreferrer noopener">trees</a> in sight. The discrepancy lies in the lack of adequate "canopy cover" - the overhead layer of branches and leaves that provide shade, reducing temperatures and increasing green cover.



<h2 class="wp-block-heading" id="h-troubling-tree-deficit">Troubling tree deficit</h2>



Less than 30 percent of buildings in cities such as New York City, Amsterdam, Buenos Aires, and Denver were found to be in neighborhoods with adequate canopy cover.



New York and Amsterdam scored almost 0% for canopy cover, while a whopping 92 and 50 percent of their buildings, respectively, had views of at least three <a href="https://www.earth.com/news/resilient-trees-can-help-safeguard-cities-from-climate-change/" target="_blank" rel="noreferrer noopener">trees</a>.



This research, a collaborative effort with the Technical University of Munich, studied over 2.5 million buildings across eight cities using the "3-30-300" rule, an emerging sustainable cities measure.



This innovative rule states that every home, school, and workplace should have a view of at least three <a href="https://www.earth.com/news/more-than-one-third-of-the-worlds-trees-face-extinction/" target="_blank" rel="noreferrer noopener">trees</a>, be located in a neighborhood with at least 30% canopy cover, and be within 300 meters of a park.



<h2 class="wp-block-heading" id="h-canopy-cover-champions">Canopy cover champions</h2>



Among the cities studied, only Seattle and Singapore could pass the 30% canopy benchmark. In these cities, 45% and 75% of buildings, respectively, have the luxury of enjoying adequate shading.



But the access to parks is not consistent. Singapore and Amsterdam scored high, while Buenos Aires and New York City trailed behind.



<h2 class="wp-block-heading" id="h-need-for-more-canopy-cover">Need for more canopy cover</h2>



Dr. Thami Croeser, a lead researcher and an <a href="https://www.rmit.edu.au" target="_blank" rel="noreferrer noopener">RMIT University</a> research fellow, found it alarming that a majority of the buildings studied failed the 30% tree canopy test.



Considering that 2023 was the hottest year on record and 25% of the global population experienced dangerous levels of extreme heat, canopy cover is an urgent requirement to cool down our cities, noted Dr. Croeser.



<h2 class="wp-block-heading" id="h-benefits-of-tree-cover-in-cities">Benefits of tree cover in cities</h2>



"Previous research has shown depression, anxiety, obesity and heatstroke are more prevalent in urban areas that lack access to shady <a href="https://www.earth.com/news/planting-trees-is-important-but-reforestation-can-help-too/" target="_blank" rel="noreferrer noopener">tree</a> canopy and green open spaces," said Dr. Croeser.



Environmentally, urban trees play a critical role in improving air quality by absorbing pollutants such as carbon dioxide, nitrogen dioxide, and sulfur dioxide, while also filtering harmful particulate matter. 



Additionally, trees are essential for stormwater management, as their roots absorb rainfall and reduce the risk of flooding.



By storing carbon, urban forests help offset greenhouse gas emissions. They also provide vital habitats for birds, insects, and other wildlife, enhancing urban biodiversity.



<h2 class="wp-block-heading" id="h-insufficiency-of-current-practices">Insufficiency of current practices</h2>



Dr. Croeser is critical of current methods of street design or retrofitting, which tend to prioritize infrastructure like cabling and pipelines over tree growth.



He advocates for a change in our practice, to prioritize green infrastructure and incorporate trees into early stages of design.



<h2 class="wp-block-heading" id="h-struggles-of-urban-trees">Struggles of urban trees</h2>



Urban trees face a tough life. They are planted in compacted soil, covered with asphalt and lack proper water access.



Dr. Croeser argues that improving these conditions can greatly enhance the growth and longevity of urban trees, thus increasing canopy cover. The "3-30-300" rule might be relatively new, but it is rapidly gaining global acceptance.



This benchmark was devised by Dutch urban forestry expert Professor Cecil Konijnendijk.to set a definitive, evidence-based minimum for nature in cities.



<h2 class="wp-block-heading" id="h-future-research-directions">Future research directions</h2>



Professor Wolfgang Weisser from the <a href="https://www.tum.de/en/" target="_blank" rel="noreferrer noopener">Technical University of Munich</a> and Dirk Voets, Senior Advisor Geospatial at Cobra Groeninzicht, have expressed support of the "3-30-300" rule and are optimistic about its potential.



The study is a clarion call for us to reassess our urban designs. The findings reach out to a global audience to advocate for more harmonious co-existence with nature in our urban spaces.



The research may ultimately be a catalyst for significant change, leading us to build more sustainable, liveable, and delightful cities.



The study is published in the journal <a href="https://www.nature.com/articles/s41467-024-53402-2" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



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Most cities lack sufficient canopy cover, despite visible trees

There is a green deficit in our cities, and it's...

We think about the foods we consume daily and the impact of our diets on our health, but how often do we consider the broader implications of these choices on the health of our planet?



Can shifting to more sustainable diets simultaneously tackle climate change and global food insecurity? This is a delicate balance to strike, but the answer is a resounding "yes."



Before diving into this, though, we ought to remember the words of Joe DeCesaro, a data analyst at <a href="https://www.ucsb.edu/" target="_blank" rel="noreferrer noopener">UC Santa Barbara</a>’s National Center for Ecological Analysis &amp; Synthesis (NCEAS).



“Changes in food demand in one part of the world can have cascading environmental and human welfare implications for people around the world,” he cautioned.



DeCesaro and his team at the NCEAS have conducted a fascinating study that aimed to understand the environmental implications of a major shift towards four distinct types of diets, globally.



<h2 class="wp-block-heading" id="h-environmental-impact-of-global-diet-shifts">Environmental impact of global diet shifts</h2>



The <a href="https://www.earth.com/news/global-food-system-is-unsustainable-and-must-be-transformed/" target="_blank" rel="noreferrer noopener">food system</a> is one of the largest contributors to environmental degradation worldwide, accounting for about a third of global greenhouse gas emissions and using more than 70% of freshwater resources.



Apart from this, agriculture causes significant land degradation and contributes to nutrient pollution in water bodies. 



One way to alleviate environmental pressure is to move towards more sustainable diets that reduce the consumption of resource-intensive food items, such as red meat, and increase the intake of nutrient-dense foods like vegetables and legumes.



Yet, DeCesaro's study reveals that diet change is only part of the solution. 



“We wanted to know who would actually be feeling the change from the food production if these shifts occur,” explained Ben Halpern, NCEAS director and a coauthor on the study.



The team, therefore, focused on understanding where and how environmental pressures might shift if global diets changed significantly.



<h2 class="wp-block-heading" id="h-strengths-and-weaknesses-of-different-diets">Strengths and weaknesses of different diets</h2>



The study analyzed the global impact of shifting to four types of diets: Indian, <a href="https://www.earth.com/news/mediterranean-diet-can-lead-to-longer-life/" target="_blank" rel="noreferrer noopener">Mediterranean</a>, EAT-Lancet (largely plant-based or "flexitarian"), and average government-recommended Food-Based Dietary Guidelines (FBDGs).



The Indian diet emerged as the most beneficial, potentially leading to a 20.9% reduction in food production-based environmental pressure. In contrast, following FBDGs could result in a 35.2% increase in global environmental pressure.



The researchers utilized extensive data, including each country's average diets, trade flows, and the environmental pressures of food production worldwide.



“The research was motivated originally by the question: Who’s consumption is generating the pressures of food production that are being felt by people and places around the world?” explained DeCesaro.



“Are poorer countries paying the environmental price of producing higher pressure foods that are being eaten by richer countries, or vice versa?" 



"Our methods allow us to track changes in the environmental pressures from the producer to the consumer, and vice versa, in a standardized format across four pressures. Our work is quite novel in this space.”



The study found that the Indian diet - primarily due to its recommendation of zero <a href="https://www.earth.com/news/wild-seafood-has-one-sixth-the-carbon-footprint-of-red-meat/" target="_blank" rel="noreferrer noopener">red meat</a> - was the most effective in reducing global cumulative pressure on environments.



This sharply contrasted with FBDGs, which typically recommend more red meat than what many countries currently consume.



<h2 class="wp-block-heading" id="h-learning-from-high-income-countries">Learning from high-income countries</h2>



Interestingly, the study revealed that the majority of the reductions in global environmental pressure would come from high-income countries. 



“Higher-income countries’ average current diets have higher consumption quantities of most food categories than the recommended quantities in our diet scenarios,” said DeCesaro. 



This indicates that these countries are over-consuming, suggesting the potential for significant reductions in environmental pressure through <a href="https://www.earth.com/news/healthy-dietary-shifts-could-keep-global-climate-goals-within-reach/" target="_blank" rel="noreferrer noopener">dietary shifts</a>.



<h2 class="wp-block-heading" id="h-sharing-sustainable-practices">Sharing sustainable practices</h2>



The research also revealed that a shift towards more sustainable, plant-forward diets could increase food-production-related environmental pressures in lower-income countries. 



However, DeCesaro noted, this increase is primarily due to these diets meeting more of the people's daily needs.



To ensure food security and equitable access to nutrition, he suggested that wealthier countries support by providing access to efficiently produced food imports and encouraging economic development to improve dietary health. This support could also include reducing environmental pressures from food production, promoting innovation and sharing sustainable food production practices.



In conclusion, the message, as summarized by Halpern, is clear: “The decisions we make about <a href="https://www.earth.com/news/hundreds-of-genes-identified-that-directly-influence-what-we-eat/" target="_blank" rel="noreferrer noopener">what we eat</a> are important for reducing our environmental footprint, but other people may pay the price for those decisions.”



The study is published in the journal <a href="https://iopscience.iop.org/article/10.1088/1748-9326/ad8509">Environmental Research Letters</a>.



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Global diet shifts: The hidden costs of what we eat

We think about the foods we consume daily and the...

For a very long time, we have been under the impression that memory and learning are solely the brain's forte. Central to this belief is the fact that our brains, particularly our brain cells, store memories.



However, an innovative team of researchers begs to differ, suggesting that cells in other parts of the body partake in this memory function too.



The ability of non-brain cells to learn and form memories is a riveting discovery. 



This thought-provoking study provides us with a new understanding of memory's mechanisms and paves the way for potential advancements in learning and memory-related afflictions treatment.



<h2 class="wp-block-heading" id="h-understanding-memory-the-basics">Understanding memory -- the basics</h2>



Memory is like your brain’s personal filing system. When you experience something new -- like meeting a friend or learning a fact -- your brain encodes that information by turning it into patterns of neural activity. 



These patterns get stored in different parts of your brain, depending on what type of information it is. For example, <a href="https://www.earth.com/news/how-human-brain-decides-which-memories-to-remember/" target="_blank" rel="noreferrer noopener">visual memories</a> might be stored in areas responsible for processing images, while facts and numbers find their way into regions that handle language and logic.



Retrieving memories happens when your brain needs to access those stored patterns. It’s similar to searching for a file on your computer. 



If you want to remember your friend’s birthday, your brain activates the relevant neural pathways to bring that information back into your <a href="https://www.earth.com/news/consciousness-may-stem-from-unseen-dimensions-beyond-our-reality/" target="_blank" rel="noreferrer noopener">conscious mind</a>. 



Sometimes, this process is seamless, but other times memories can be a bit fuzzy or mixed up, especially if they’re not accessed frequently. That’s why you might struggle to recall something you haven’t thought about in a while.



Your memory isn’t perfect, and it can change over time. Each time you recall a memory, your brain might update it with new <a href="https://www.earth.com/news/unlocking-memories-with-scents-may-help-treat-depression/" target="_blank" rel="noreferrer noopener">information or emotions</a>, which can make the memory stronger or slightly different from the original event. Factors like sleep, stress, and even nutrition can influence how well your memory works.



<h2 class="wp-block-heading" id="h-memory-formation-and-cells">Memory formation and cells</h2>



“Learning and memory are generally associated with brains and brain cells alone, but our study shows that other cells in the body can learn and <a href="https://www.earth.com/news/memory-is-shaped-by-both-past-and-future-experience-and-events/" target="_blank" rel="noreferrer noopener">form memories</a>, too,” explains New York University’s&nbsp;<a href="https://liberalstudies.nyu.edu/about/faculty-listing/nikolay-kukushkin.html" target="_blank" rel="noreferrer noopener">Nikolay V. Kukushkin</a>, the lead author of the&nbsp;study.&nbsp;



The goal of the research was straightforward -- to investigate if non-brain cells contribute to memory. To do this, the scientists deployed the time-honored neurological property, known as the massed-space effect.



This principle asserts that our retention capacity is better when information is studied in spaced intervals rather than crammed into a single, intensive session.



Does this strike a chord? We have all experienced the futility of last-minute cramming before tests.



<h2 class="wp-block-heading" id="h-memory-test-in-non-brain-cells">Memory test in non-brain cells</h2>



In this study, the scientists simulated the process of spaced learning by examining two types of non-brain human cells -- one from nerve tissue and one from kidney tissue -- in a laboratory setting.



These cells were exposed to varying patterns of chemical signals, akin to the exposure of brain cells to neurotransmitter patterns when we learn new information.



The intriguing part? These non-brain cells also switched on a "memory gene" - the same gene that brain cells activate when they detect information patterns and reorganize their connections to form memories.



So, how exactly did the scientists gauge the memory and learning process? 



They ingeniously engineered the non-brain cells to generate a glowing protein, which indicated whether the memory gene was active or dormant.



<h2 class="wp-block-heading" id="h-memory-cells-learning-and-pulses">Memory cells, learning, and pulses</h2>



The results of this innovative research were nothing short of astounding. 



It turned out that these cells were able to discern when the chemical pulses (simulating bursts of neurotransmitters in the brain) were repeated rather than simply prolonged -- much like neurons in our own brains when we opt for break-filled studying instead of continuous cramming.



When the pulses were delivered at intervals, they activated the "<a href="https://www.earth.com/news/sleep-is-essential-for-memory-formation/" target="_blank" rel="noreferrer noopener">memory</a> gene" more intensely and for a longer duration than when the same treatment was administered all at once - a perfect demonstration of the massed-space effect.



“This reflects the massed-space effect in action,” says Kukushkin, a clinical associate professor of life science at NYU Liberal Studies and a research fellow at NYU’s Center for Neural Science. 



“It shows that the ability to learn from spaced repetition isn't unique to brain cells, but, in fact, might be a fundamental property of all cells.”



<h2 class="wp-block-heading" id="h-understanding-how-memory-works">Understanding how memory works</h2>



Not only does this research on non-brain cells introduce fresh perspectives to study memory, but it also holds promise for potential health-related benefits.



“This discovery opens new doors for understanding how <a href="https://www.earth.com/news/how-does-our-brain-form-long-term-memories/" target="_blank" rel="noreferrer noopener">memory</a> works and could lead to better ways to enhance learning and treat memory problems,” notes Kukushkin.



“At the same time, it suggests that in the future, we will need to treat our body more like the brain -- for example, consider what our pancreas remembers about the pattern of our past meals to maintain healthy levels of blood glucose or consider what a cancer cell remembers about the pattern of chemotherapy.”



<h2 class="wp-block-heading" id="h-implications-of-this-research">Implications of this research</h2>



As we explore this fascinating new research on non-brain cells, the pressing question remains - how will this impact our <a href="https://www.earth.com/news/human-brains-create-three-copies-of-every-memory-we-make/" target="_blank" rel="noreferrer noopener">understanding of memory formation</a>?



What implications does this discovery hold for the future of learning and memory-related treatments? Only time will tell. 



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The research team also included Thomas Carew, a professor in NYU’s Center for Neural Science; Tasnim Tabassum, an NYU researcher; and Robert Carney, an NYU undergraduate researcher. The study was funded by a grant from the National Institutes of Health (R01-MH120300-01A1).



The study is published in the journal <a href="https://www.nature.com/articles/s41467-024-53922-x" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



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Memory is stored in cells throughout the body, not just the brain

For a very long time, we have been under the...

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



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



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



Video/ Image Credit: ESA



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

Nushagak Bay in southwest Alaska

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

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



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



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



Video/ Image Credit: American Chemical Society&nbsp;



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



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Flu viruses are more flexible than expected

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

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



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



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



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



Video/Image Credit: ESA&nbsp;



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

Lake Trasimeno in Central Italy

[sendtonews key="3upvlAaHgO-2256633-12187" type="single"] Today’s Video of the Day from the...

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



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



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



Video Credit: American Chemical Society&nbsp;



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



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

Detecting mercury contamination with the tap of a finger

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

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



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



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



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



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



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



Video/ Image Credit: European Space Agency&nbsp;



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



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

Kainji Lake in north central Nigeria

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

<div class="wp-block-sendtonews-playerselector">[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"]</div>



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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



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



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

Designing crops that can beat the heat

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

For a while now, Yuki hadn’t been himself. He wasn’t eating that much and his excited attitude seemed to slowly fade away. Even when one of the team members played with his favorite toy, Yuki was not interested in the slightest. He seemed to mope around his enclosure, occasionally engaging in a bit of playtime. The team knew they needed answers.

Not Himself

“We show off their adorable moments in the hope of helping people identify with them at least and maybe change their fear response into a healthy respect through education,” Brittany continued, “… And also giving an <a href="https://www.earth.com/news/animal-communities-are-being-reshuffled-by-climate-change/">animal </a>a chance at a decent life when otherwise they would be euthanized.” Despite the delight that the photo brought to fans, some bad news would soon make its way to the sanctuary.