Today's Image of the Day from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features an astronaut view of the northeast coast of Somalia. This region, which borders the Indian Ocean, has a mix of sandy beaches and rugged cliffs



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



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



"Bidirectional winds sculpted the tan, brown, and reddish sand into transverse sand dunes visible near the stream’s deltas. The orientation of the sand dunes indicates that they were likely formed by summer winds blowing up the coast from the southwest."



The economy of northeast Somalia is primarily based on fishing, livestock, and trade. The long coastline provides ample opportunities for fishing, which is a significant source of food and income.



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



The area is rich in cultural heritage, with a history that dates back to ancient times. It is believed to be part of the ancient Land of Punt, known for its trade relations with ancient Egypt.



The climate is typically hot and dry, with irregular rainfall. This environment shapes the lifestyle and agricultural practices of northeast Somalia.



Despite the arid conditions, the region supports a variety of wildlife, including species adapted to desert and semi-desert habitats.



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



Image Credit: NASA Earth Observatory&nbsp;



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Northeast Somalia: A landscape shaped by wind and water

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

Today's Image of the Day from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features Cyclone Michaung, which slammed into the southern Indian coast on December 5, 2023 with intense winds and torrential rainfall. Michaung made landfall between Nellore and Kavali in the state of Andhra Pradesh. 



"When it made landfall, the storm had sustained winds of 90 to 100 kilometers (56 to 62 miles) per hour, according to the India Meteorological Department," said NASA.



"The VIIRS (Visible Infrared Imaging Radiometer Suite) on the NOAA-20 satellite captured this image after landfall, as the weakening storm moved northward and winds had slowed to 65 to 75 kilometers per hour."



As the cyclone approached, tall waves crashed into southern coastal towns and entire villages were submerged, according to a report from Reuters. Trees were uprooted, roads were damaged, and cars were swept away.&nbsp;



By Wednesday, rescue operations were launched in Chennai, a city of over six million people. Rescuers used inflatable rafts and ropes to pull people from their flooded homes and air force helicopters dropped food to some of those who remained stranded.



Among the widespread destruction, there have been 13 confirmed deaths due to causes including falling structures and electrocution.



Cyclones are relatively common along the southern coast of India, particularly in the Bay of Bengal and the Arabian Sea. This region is prone to cyclonic activity primarily due to its geographical location and certain meteorological factors.&nbsp;



Cyclones in this area tend to occur mainly in two seasons: the pre-monsoon season (April-June) and the post-monsoon season (October-December).



During these periods, warm ocean temperatures, high humidity, and favorable wind patterns contribute to the development and intensification of cyclones.



Image Credit: NASA Earth Observatory&nbsp;



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Cyclone Michaung caused widespread destruction in southern India

Today's Image of the Day from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features a volcanic plume drifting from Anak Krakatau, a small island in the Sunda Strait between the islands of Java and Sumatra in Indonesia. 



Anak Krakatau, which means "Child of Krakatoa," emerged from the sea in 1927, forming over the caldera of the infamous Krakatoa volcano, which erupted catastrophically in 1883.&nbsp;



This earlier eruption was one of the most violent volcanic events in recorded history, known for its immense power and the global climate impact it had due to the large amount of ash it sent into the upper atmosphere.



Anak Krakatau has been growing continuously since its emergence, with frequent eruptions that have reshaped its structure and size over time.&nbsp;



"Geologists have tallied 57 eruptive periods from this location since the beginning of the Holocene, roughly 11,700 years ago," said NASA. "The most recent eruptive period, which started in May 2021 and continued into December 2023, has featured frequent but generally mild Strombolian blasts of volcanic gases and ash particles."&nbsp;



"Materials ejected from the volcano’s vent are typically lofted a few hundred meters above the summit, and small lava flows occasionally drain down the island's flanks and into the sea."



"Beginning on November 26, 2023, geologists with the Indonesian Center for Volcanology and Geological Hazard Mitigation began to report more intense explosions, with plumes of volcanic material rising up to 1,000 meters (3,280 feet) above the vent."&nbsp;



The public has been warned to stay at least 5 kilometers (3 miles) from the crater. Due to elevated risks of ash in the area, the Volcanic Ash Advisory Center in Darwin, Australia, has issued multiple warnings to the aviation community.



The image was captured on December 2, 2023 by the Operational Land Imager (OLI) on Landsat 8.



Image Credit: NASA Earth Observatory&nbsp;



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Volcanic activity has intensified on Anak Krakatau

Today's Image of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features a false-color image of Lake Abbe in northeast Ethiopia. The image was captured by the Copernicus Sentinel-2 mission.&nbsp;



"Visible as the large round dark area, Lake Abbe, also known as Lake Abhe, straddles the border of Ethiopia to the west and Djibouti to the east. The lake is 19 km wide and 17 km long and is extremely salty. It is dotted with clusters of steaming limestone chimneys and surrounded by large salt flats, visible in white, and rift volcanoes," says ESA.



"The biggest volcano in the image is Mount Dama Ali, a dormant 25-km-wide shield volcano that rises on the northwest shore of the lake."



"Lake Abbe and Lake Afambo, which is visible at the top of the image, are part of a chain of six connected salt lakes, fed by the Awash River - one of Ethiopia’s biggest rivers.'



Copernicus Sentinel-2’s near-infrared channel highlights vegetation in bright red. This strategy makes it easy to spot algal blooms, such as the one that is visible in Lake Abbe. According to ESA, the light blue color on the west shore indicates sediment discharged into the lake.



"Because of its dry, desert, almost lunar landscape and the steaming, sulphuric vents, Lake Abbe is considered one of the most inaccessible areas on Earth," says ESA. "Earth observation satellites are key in these cases as they are particularly relevant for monitoring remote regions such as this."



Image Credit: ESA&nbsp;



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Lake Abbe in northeast Ethiopia

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

Today's Image of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory </a>&nbsp;features an astronaut photograph of Abu Dhabi, located on the coast of the Persian Gulf.



Abu Dhabi is the capital and the second-most populous city of the United Arab Emirates (UAE). It is also the capital of the Emirate of Abu Dhabi, the largest of the UAE's seven emirates.&nbsp;



Abu Dhabi possesses around 9% of the world's proven oil reserves and about 5% of the world's natural gas. Consequently, oil exports have fueled its rapid development and provided substantial wealth.



"Prior to the formation of the UAE in the 1970s, Abu Dhabi was a municipality of less than 62,000 people. The region experienced a rapid population increase over the past five decades due to its role in the petroleum and financial industries, which enabled the city’s population to grow to about 1.5 million people by the early 2020s," said NASA.



The city places a strong emphasis on promoting Emirati culture and heritage. It hosts numerous events, festivals, and has several museums and cultural centers.



"The landscape of the Abu Dhabi emirate is mainly composed of wind-blown sand, mangroves, rocky outcrops, and intertidal flats. The Abu Dhabi Sabkha, visible along the coastline as brown, non-vegetated land, was produced by wind erosion of ancient dunes and the deposition of tidal sediments," said NASA.



"Sabkhas are flat coastal areas that are characteristically high in salt. The abundance of salt in the soil limits the ability of vegetation to develop on the sabkha."



"In contrast to the barren sabkha, green mangrove forests are present along the coastline as well. Mangrove forests are regions of shrubs and trees with dense root systems that protect the intertidal zones from coastal erosion."



Image Credit: NASA Earth Observatory&nbsp;



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Abu Dhabi, the capital city of the United Arab Emirates

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

Today's Image of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features a Copernicus Sentinel-2 mission view of Tutuila, a tropical island in the American Samoa archipelago.



American Samoa is an unincorporated territory of the United States located in the South Pacific Ocean. It consists of five main islands and two atolls. The largest and most populous island is Tutuila, where Pago Pago, the capital city, is situated.



The eastern part of the chain of islands forms the American Samoa, while the western part forms the independent state of Samoa.



Tutuila Island is known for its rugged terrain, lush landscapes, and deep harbors. It's the economic and political center of American Samoa, with the majority of the population residing here. The island's geography features volcanic peaks, with Mount Alava and Matafao Peak being the highest points, offering stunning views and rich biodiversity.



American Samoa as a whole has a unique blend of American and Samoan culture. The territory maintains traditional Samoan customs, making it a fascinating place for cultural studies. The economy primarily revolves around fishing and the services sector, with canned tuna being a significant export.



The National Park of American Samoa, partly located on Tutuila, helps preserve the tropical rainforests, coral reefs, and Samoan culture. This park is unique because it's one of the only national parks in the United States that's leased rather than owned by the government, reflecting the strong communal land traditions of Samoa.



Image Credit: ESA 



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Tutuila in the American Samoa archipelago 

The old man scratched his beard and said, “Some guys come out here <a href="https://www.earth.com/news/great-white-sharks-form-social-bonds-while-hunting/">hunting</a>. And if they don’t get anything, they get bored and fire at trees.” The rest of the group took on the same grin as the old-timer. They were old rounds from a rifle. It might not have been the magical treasure he had hoped for, but the trunk wasn’t ready to call it a day yet. Neither was Tony.

An Amusing Truth

Urban,Landscape,And,Trees

Urban areas are increasingly recognizing the importance of trees in mitigating the effects of climate change and enhancing the quality of life for city dwellers. Recent research from the <a href="https://www.gu.se/en" target="_blank" rel="noreferrer noopener">University of Gothenburg</a> has provided valuable insights into how urban trees contribute to cooler air temperatures and the conditions they need to thrive.



<h2 class="wp-block-heading" id="h-role-of-trees-in-urban-climate">Role of trees in urban climate</h2>



<a href="https://www.earth.com/news/us-cities-are-about-to-get-a-lot-greener-with-1-billion-for-tree-planting/" target="_blank" rel="noreferrer noopener">Trees</a> have a well-established role in urban environments, particularly in the context of climate change. As global temperatures rise, urban trees offer much-needed shade and contribute to lowering air temperatures. 



However, the research team, led by Janina Konarska, emphasizes that the benefits of trees are maximized when they are given suitable conditions to grow. A crucial factor in the efficacy of urban trees is the extent of paved surfaces surrounding them. 



The study highlights that <a href="https://www.earth.com/news/new-york-city-greenery-absorbs-vast-amounts-of-carbon/" target="_blank" rel="noreferrer noopener">trees</a> need adequate space, free from asphalt, to maximize their growth and cooling effects. “Our research shows that an important factor is how much of the area around the tree is paved,” says Konarska.



<h2 class="wp-block-heading" id="h-urban-trees-with-less-asphalt">Urban trees with less asphalt</h2>



The study found that <a href="https://www.earth.com/news/urban-forests-benefit-from-diverse-native-tree-species/" target="_blank" rel="noreferrer noopener">trees</a> with additional grassy areas around their trunks, especially those aged 20–30 years, showed significantly better growth and cooling effects. 



“We found in our study that 20–30-year-old trees surrounded by grass were on average 2.6 meters taller and the crown was 1.3 meters wider than nearby trees growing with paving close to the trunk. The trees also had a crown that was 61 percent denser and provided twice as much cooling,” says Janina Konarska.



<h2 class="wp-block-heading" id="h-surface-cover-and-tree-health">Surface cover and tree health</h2>



The research assessed the impact of surface cover around tree trunks on species like pin oak, horse chestnut, and common lime. It considered various factors such as crown density, tree growth, and transpiration rates. 



The findings indicate that the type of surface cover significantly influences these parameters and, consequently, the tree's ability to impact the microclimate through shading and cooling.



Asphalt surfaces near <a href="https://www.earth.com/news/the-majority-of-urban-trees-are-threatened-by-climate-change/" target="_blank" rel="noreferrer noopener">trees</a> lead to several challenges. "The air above an asphalt surface will be warmer than the air above grass or soil. A hardened surface also prevents rainwater from reaching the roots, impacting the growth of the tree," Konarska adds. This effect varies across tree species, with some like the horse chestnut being less affected by hardened surfaces.



<h2 class="wp-block-heading" id="h-urban-tree-planting-best-practices">Urban tree planting best practices</h2>



Given the expenses involved in planting and nurturing trees in urban areas, it's crucial to optimize their growth environment. The study underscores the importance of not only the choice of tree species but also the management of the area surrounding the tree trunk.



“You have to do the best you can when planting trees in urban areas. If it is difficult to create open spaces around the trees, it is a good idea to invest in better soil and preferably to water the tree,” says Lasse Tarvainen, an environmental scientist at the University of Gothenburg.



In summary, the research from the University of Gothenburg serves as a call to action for city planners, environmentalists, and the public. It highlights the need for thoughtful planting and maintenance of urban trees to harness their full potential in <a href="https://www.earth.com/news/arbor-day-a-celebration-of-trees-and-their-unrivaled-importance-to-the-earth/" target="_blank" rel="noreferrer noopener">cooling and beautifying our cities</a>. 



As Tarvainen notes, "It is important that we take care of the trees, they are valuable in many ways." This study lays the groundwork for more sustainable urban planning, where trees play a central role in creating healthier, more livable urban spaces.



The full study was published in the journal <a href="https://www.sciencedirect.com/science/article/pii/S0169204623001913?via%3Dihub" target="_blank" rel="noreferrer noopener">Landscape and Urban Planning</a>.



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Urban trees surrounded by less asphalt grow taller and stronger

Urban areas are increasingly recognizing the importance of trees in...

Europa,Clipper,Will,Study,Possible,Signs,That,The,Moon,Of

In a fun, public-outreach initiative, <a href="https://www.nasa.gov" target="_blank" rel="noreferrer noopener">NASA</a> is offering the public a once-in-a-lifetime opportunity to send their names on a deep space voyage to Jupiter and its moon Europa. The Europa Clipper mission is inviting people worldwide to be a part of this exciting journey through its “<a href="https://europa.nasa.gov/news/98/time-is-running-out-to-add-your-name-to-nasas-europa-clipper/" target="_blank" rel="noreferrer noopener">Message in a Bottle</a>” campaign. 



With the deadline fast approaching, this campaign provides a unique chance for individuals to be symbolically present on a spacecraft traveling 1.8 billion miles (2.6 billion kilometers) to one of the solar system's most intriguing destinations.



<h2 class="wp-block-heading" id="h-be-a-part-of-the-europa-clipper-mission">Be a part of the Europa Clipper mission</h2>



The “Message in a Bottle” campaign is not just a call to action but a time-sensitive opportunity. The deadline for the public to submit their names is set for 11:59 p.m. EST, December 31, 2023. As the clock ticks, the anticipation and excitement among space enthusiasts and the general public are palpable.



To date, almost <a href="https://europa.nasa.gov/message-in-a-bottle/participation-map/" target="_blank" rel="noreferrer noopener">2 million names</a> have been submitted for this celestial journey. The process of immortalizing these names is as fascinating as the mission itself. 



Specialists at NASA’s Jet Propulsion Laboratory, based in Southern California, will utilize an electron beam in their Microdevices Laboratory to etch these names onto a silicon microchip the size of a dime. This precision technology enables each line of text to be less than one-thousandth the width of a human hair, measuring a mere 75 nanometers.



Adding a cultural dimension to the mission, the names will accompany the poem “<a href="https://www.youtube.com/watch?v=EgWbeDNPD6o" target="_blank" rel="noreferrer noopener">In Praise of Mystery</a>” by U.S. Poet Laureate Ada Limón. This original piece, penned to honor the Europa Clipper mission, will be engraved on a metal plate alongside the microchip bearing the names. As the spacecraft makes its journey and performs close flybys of Europa, these names and the poem will symbolize a message in a bottle sent out into the vastness of space.



<h2 class="wp-block-heading" id="h-europa-clipper-mission-scientific-goals">Europa Clipper mission scientific goals</h2>



The Europa Clipper <a href="https://europa.nasa.gov/" target="_blank" rel="noreferrer noopener">mission</a> has ambitious scientific objectives. It aims to traverse half a billion miles (800 million kilometers) in orbit around Europa, using its suite of scientific instruments to gather vital data. The focus of the mission is on Europa’s <a href="https://www.earth.com/news/jupiters-moon-europa-salty-oceans/" target="_blank" rel="noreferrer noopener">subsurface ocean</a>, icy crust, and atmosphere. One of the key questions the mission seeks to answer is whether this distant moon has the potential to support life.



After the Europa Clipper is fully assembled at JPL, it will be transported to NASA’s Kennedy Space Center in Florida. There, it will undergo final preparations for its scheduled launch in October 2024. This phase marks a critical step in the journey from concept to reality, as the spacecraft gets ready to embark on its historic mission.



<h2 class="wp-block-heading" id="h-legacy-of-inspirational-messages">Legacy of inspirational messages</h2>



The “Message in a Bottle” campaign is a continuation of NASA’s long-standing tradition of sending inspirational messages into space. Drawing inspiration from the Voyager spacecraft launched in 1977, which carried a time capsule of Earth’s diversity in sounds and images, this program aims to ignite imaginations worldwide.



For those interested in being part of this historic mission, NASA has made it easy to participate. By visiting <a href="https://go.nasa.gov/MessageInABottle">NASA's dedicated website</a>, individuals can sign up, read Ada Limón’s poem, and even listen to a recitation in an animated video. Additionally, participants can create and download a customizable souvenir – an illustration of their name on a message in a bottle set against the backdrop of Europa and Jupiter. Sharing this unique experience on social media with the hashtag #SendYourName is encouraged, spreading the excitement and communal spirit of this groundbreaking mission.



<h2 class="wp-block-heading" id="h-ocean-moon-europa-may-support-life">Ocean moon Europa may support life</h2>



Europa, one of Jupiter’s moons, is considered one of the few places in our solar system that might harbor <a href="https://www.earth.com/news/nasa-confirms-an-ocean-on-europa-may-be-habitable/" target="_blank" rel="noreferrer noopener">conditions suitable for life</a>. It has a water-ice crust covering a vast ocean of salty liquid water, which lies above a rocky seafloor. However, the composition of this ocean, particularly in terms of essential chemicals for life like carbon, was previously unknown.



<h3 class="wp-block-heading" id="h-webb-telescope-s-key-discovery">Webb telescope's key discovery</h3>



The <a href="https://webb.nasa.gov/" target="_blank" rel="noreferrer noopener">James Webb Space Telescope</a> has revealed the presence of carbon dioxide in a specific region on Europa’s surface, particularly in Tara Regio, a young and geologically active area. 



This discovery is crucial as it indicates that the carbon likely originated from Europa’s subsurface ocean rather than being delivered by external sources such as meteorites.



<h3 class="wp-block-heading" id="h-significance-of-finding-carbon-dioxide">Significance of finding carbon dioxide</h3>



The concentration of carbon dioxide in <a href="https://www.earth.com/news/alien-life-on-europa-co2-discovery-by-webb-increases-the-odds/" target="_blank" rel="noreferrer noopener">Europa’s ocean</a> is of great interest to scientists. As Geronimo Villanueva of NASA’s Goddard Space Flight Center explains, "On Earth, life likes chemical diversity...We’re carbon-based life. Understanding the chemistry of Europa’s ocean will help us determine whether it’s hostile to life as we know it, or if it might be a good place for life."



Samantha Trumbo of Cornell University adds, “We now think that we have observational evidence that the carbon we see on Europa’s surface came from the ocean. That’s not a trivial thing. Carbon is a biologically essential element.”



The carbon dioxide was identified using Webb’s Near-Infrared Spectrograph (<a href="https://webb.nasa.gov/content/observatory/instruments/nirspec.html" target="_blank" rel="noreferrer noopener">NIRSpec</a>). This instrument provided high-resolution spectra of Europa’s surface, allowing for precise localization of specific chemicals.



<h3 class="wp-block-heading" id="h-co2-instability-on-jupiter-s-moon-europa">CO2 instability on Jupiter's moon Europa</h3>



Since carbon dioxide isn’t stable on Europa’s surface, its presence suggests recent geological activity. Heidi Hammel of the <a href="https://www.aura-astronomy.org/" target="_blank" rel="noreferrer noopener">Association of Universities for Research in Astronomy</a> notes, “These observations...were able to do really big science. This work gives a first hint of all the amazing solar system science we’ll be able to do with Webb.”



Villanueva’s team also investigated the existence of water vapor plumes on Europa, which had been tentatively detected by the Hubble Space Telescope. The new Webb data, however, shows no evidence of such plumes, setting a strict upper limit on the rate of material ejection.



Hammel elaborates, “There is always a possibility that these plumes are variable... All we can say with 100% confidence is that we did not detect a plume at Europa when we made these observations with Webb.”



In summary, the discovery of carbon dioxide on Jupiter's moon Europa by the Webb Telescope marks a pivotal moment in our quest to understand the moon's environment and its potential to support life. This finding not only enriches our knowledge of Europa but also sets the stage for future explorations, particularly the upcoming Europa Clipper mission and ESA’s Jupiter Icy Moons Explorer. 



As we continue to unravel the mysteries of our solar system, Europa stands out as a key point of interest in the search for extraterrestrial life.



<h2 class="wp-block-heading" id="h-more-about-the-europa-clipper-mission">More about the Europa Clipper mission</h2>



NASA's Europa Clipper mission embarks on a groundbreaking journey to uncover the secrets of Jupiter's icy moon, Europa. The primary scientific goal of this ambitious project is to assess whether Europa harbors environments suitable for life beneath its frozen exterior. This mission not only aims to broaden our understanding of Europa but also seeks to enhance our knowledge of potentially habitable worlds beyond Earth.



<h3 class="wp-block-heading" id="h-core-objectives-of-the-europa-clipper">Core objectives of the Europa Clipper</h3>



One of the central objectives of the Europa Clipper mission is to delve into the nature of Europa's ice shell and the ocean beneath. Understanding these elements is crucial for assessing the astrobiological potential of the moon and answering the profound question of whether life could exist in these alien waters.



Another significant aspect of the mission involves studying Europa's composition and geology. This exploration is not just about mapping and understanding the physical aspects of Europa but also about interpreting what these characteristics tell us about the moon's ability to support life.



<h3 class="wp-block-heading" id="h-europa-clipper-s-innovative-design">Europa Clipper's innovative design</h3>



The Europa Clipper spacecraft stands as NASA's largest planetary mission spacecraft to date. With a height of about 16 feet (5 meters) and a wingspan exceeding 100 feet (30.5 meters) when its solar arrays are deployed, this colossal structure is a marvel of engineering. 



The spacecraft, designed to thrive in the challenging environment of the Jupiter system, requires substantial solar arrays to gather enough sunlight for power, given its distance from the Sun.



Due to the intense radiation around Europa, caused by Jupiter's magnetic field, the Europa Clipper incorporates a pioneering design feature—a thick-walled vault made of titanium and aluminum. This innovation, first successfully employed in NASA’s Juno spacecraft, is critical for shielding the payload and electronics from harmful radiation, thereby prolonging the spacecraft's operational life.



The Europa Clipper is scheduled to perform nearly 50 flybys of Europa, each bringing it as close as 16 miles (25 kilometers) from the moon's surface. These flybys are meticulously planned to allow the spacecraft to explore different regions of Europa, effectively mapping nearly the entire moon.



<h3 class="wp-block-heading" id="h-cutting-edge-scientific-instruments">Cutting-edge scientific instruments</h3>



The spacecraft's payload is a collection of advanced instruments designed to thoroughly investigate Europa. These include:



Cameras and Spectrometers: For capturing high-resolution images and composition maps of Europa's surface and atmosphere.



Ice-Penetrating Radar: To probe beneath the icy crust in search of subsurface water.



Magnetometer and Gravity Measurements: These tools are essential for insights into Europa's ocean and deep interior.



Thermal Instrument: To identify warmer ice regions and possible water eruptions.



Atmospheric and Space Environment Analysis: Instruments dedicated to examining the composition of particles in Europa's thin atmosphere and surrounding space.



<h3 class="wp-block-heading" id="h-understanding-habitability-beyond-earth">Understanding habitability beyond Earth</h3>



In summary, the Europa Clipper mission is a monumental step in our quest to understand the potential for life in our solar system beyond Earth. By exploring Europa's icy surface, subsurface ocean, and internal structure, this mission promises to unlock secrets that could redefine our understanding of habitability in the cosmos. 



As the Europa Clipper soars through the Jovian system, it carries not just sophisticated instruments, but the collective hope and curiosity of humanity.



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Send your name to Jupiter’s 'ocean moon' as Europa Clipper mission searches for life

In a fun, public-outreach initiative, NASA is offering the public...

<a href="https://www.earth.com/news/why-do-we-sleep-study-reveals-new-clues-behind-this-mystery/">Sleep</a>, a vital component of our daily lives, is crucial for maintaining optimal neurocognitive functioning and health. However, for a significant portion of the workforce, particularly shift workers, maintaining a regular sleep pattern is a challenge.&nbsp;



In the European Union, a notable 21% of workers in 2015 were engaged in shift work, leading to a disruption in their circadian sleep-wake rhythms. A recent study conducted in the Netherlands sheds light on this critical issue.



<h2 class="wp-block-heading" id="h-disordered-sleep-nbsp">Disordered sleep&nbsp;</h2>



The research, led by Dr. Marike Lancel from GGZ Drenthe’s Mental Health Institute, delves into the complex relationship between different shift work patterns, sociodemographic factors, and sleep disorders.&nbsp;



“We showed that compared to working regular shifts during daytime hours, working other shift types is associated with a higher occurrence of disordered sleep, particularly in rotating and regular night shift work,” said Dr. Lancel. “Of note, 51% of people working nights scored positive for at least one sleep disorder.”



“There is a lot of evidence that shift work reduces the quality of sleep. However, little is known about the influence of different types of shifts on the prevalence of various sleep disorders, and how this may vary depending on demographic characteristics."



<h2 class="wp-block-heading" id="h-focus-of-the-study">Focus of the study</h2>



The comprehensive research involved over 37,000 participants who provided detailed information about their shift work patterns and demographic data.&nbsp;



A pivotal part of the study was a questionnaire designed to screen for six common sleep disorder categories: insomnia, hypersomnia, parasomnia, sleep-related breathing disorders, sleep-related movement disorders, and circadian rhythm sleep-wake disorders.



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



The responses indicated that regular night shift work was particularly detrimental to sleep health.&nbsp;



Notably, half of the night shift workers reported sleeping less than six hours within a 24-hour period, with 51% indicating at least one sleep disorder and 26% reporting two or more.



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



A unique aspect of the study was its focus on demographic variables such as sex, age, education level, and living situations.&nbsp;



The findings showed gender-specific differences, with men sleeping fewer hours but women more prone to sleep disorders. Age was another crucial factor, influencing not just sleep duration but also the prevalence of sleep disorders, especially among younger participants aged 30 and below.



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



The study revealed a significant correlation between education level and sleep health. “The effects of shift work on sleep are most prominent in young adults with a lower education," said Dr. Lancel.



This group not only slept fewer hours but also had a higher prevalence of sleep disorders and their comorbidities.



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



While some individuals may adapt better to night shifts, the study suggests that the average night shift worker is likely to face significant challenges in maintaining regular, healthy sleep patterns.



“Because those working night shift will remain de-synchronized with the day-work focused environment they live in, it is unlikely to completely prevent all negative consequences of night work," explained Dr. Lancel.



<h2 class="wp-block-heading" id="h-study-implications-nbsp">Study implications&nbsp;</h2>



Despite certain limitations, such as a potential bias in the participant pool, the study offers crucial insights for employers in sectors where shift work is prevalent.&nbsp;



The research provides a foundation for developing targeted interventions and policies to improve the well-being of shift workers, ultimately enhancing their quality of life and productivity.



The study is published in the journal <a href="http://dx.doi.org/10.3389/fpsyt.2023.1233640" target="_blank" rel="noreferrer noopener">Frontiers in Psychiatry</a>.



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More than half of night shift workers have a sleep disorder

Sleep, a vital component of our daily lives, is crucial...

Tropical coral reefs, celebrated for their extraordinary beauty and biodiversity, are facing significant challenges due to the relentless pace of global warming. However, a novel solution to boost reef recovery may be found in an unexpected ally: <a href="https://www.earth.com/news/seabirds-need-ocean-wide-protection-to-survive-human-impacts/">seabirds</a>.&nbsp;



A recent study led by <a href="https://www.lancaster.ac.uk/" target="_blank" rel="noreferrer noopener">Lancaster University</a> has uncovered a fascinating interaction between seabirds and coral reefs.&nbsp;



<h2 class="wp-block-heading" id="h-reef-recovery-insights">Reef recovery insights</h2>



According to the experts, the presence of seabirds on islands located nearby tropical <a href="https://www.earth.com/news/massive-study-provides-answers-to-how-coral-reefs-can-survive-climate-change/" target="_blank" rel="noreferrer noopener">coral reefs</a> can boost coral growth rates on such reefs by more than double. This discovery is not just about growth rates; it also pertains to the resilience of coral reefs. 



Reefs located near <a href="https://www.earth.com/news/incredible-journey-seabird-rode-out-a-typhoon-for-11-hours/" target="_blank" rel="noreferrer noopener">seabird</a> colonies can bounce-back much quicker from bleaching events. This is particularly significant given the increasing frequency of bleaching events due to rising sea temperatures, which often result in widespread <a href="https://www.earth.com/news/some-fish-have-feces-that-is-deadly-to-coral-reefs/" target="_blank" rel="noreferrer noopener">coral mortality</a>.



<h2 class="wp-block-heading" id="h-studying-reef-recovery">Studying reef recovery</h2>



The focus of the study was on Acropora, a critical type of coral known for its structural complexity and importance in sustaining fish populations and reef growth.&nbsp;



The researchers noted a significant difference in recovery times based on the presence of <a href="https://www.earth.com/news/marine-heatwaves-are-causing-massive-seabird-mortality-events/" target="_blank" rel="noreferrer noopener">seabirds</a>. For instance, Acropora around islands with seabirds were found to recover from bleaching events by around 10 months faster compared to reefs located away from seabird colonies.



The study highlights the crucial role of seabirds in shortening recovery times for corals, which could be pivotal in their ability to withstand the rapid pace of climate change.&nbsp;



The shorter recovery times could make the difference between continuing to bounce back for some <a href="https://www.earth.com/news/coral-reef-plastic-pollution-increases-with-depth-and-near-protected-areas/" target="_blank" rel="noreferrer noopener">coral reefs</a> in the face of climate change, due to which damaging <a href="https://www.earth.com/news/deepest-known-coral-reef-bleaching-discovered-alarming-scientists/" target="_blank" rel="noreferrer noopener">bleaching events</a> now occur much more frequently than in earlier periods.



<h2 class="wp-block-heading" id="h-seabird-derived-nutrients-nbsp">Seabird-derived nutrients&nbsp;</h2>



The connection between seabirds and <a href="https://www.earth.com/news/pacific-coral-reefs-have-naturally-increased-their-heat-tolerance/" target="_blank" rel="noreferrer noopener">coral health</a> is rooted in the nutrient-rich guano produced by these birds. Seabirds that feed on fish in the open ocean far from islands return to islands to roost, while depositing nitrogen- and phosphorus-rich nutrients in the form of guano. 



This nutrient transfer, critical for coral growth, occurs when <a href="https://www.earth.com/news/poo-from-fish-that-eat-coral-is-beneficial-for-coral-reefs/" target="_blank" rel="noreferrer noopener">guano</a> is washed into the sea, fertilizing the corals and other marine species.



“Our results clearly show that seabird-derived nutrients are directly driving faster coral growth rates and faster recovery rates in Acropora coral,” said lead author Casey Benkwitt, an expert in Marine Biology at Lancaster.



<h2 class="wp-block-heading" id="h-experimental-approach-nbsp">Experimental approach&nbsp;</h2>



The research team conducted their study in a remote Indian Ocean archipelago, comparing reefs near seabird-populated islands to those near rat-infested islands, which negatively impact seabird populations.&nbsp;



The study also involved an experimental approach where some Acropora corals were transplanted between islands. This confirmed that the presence of seabirds, and not other factors, was responsible for the nutrient enrichment and enhanced coral growth.



<h2 class="wp-block-heading" id="h-study-implications-nbsp">Study implications&nbsp;</h2>



“This faster recovery may be critical as the average time between successive bleaching events was 5.9 years in 2016 – a reduction from 27 years in the 1980s. Even small reductions in recovery times during this window may be key to maintaining coral cover over the short-term,” Benkwitt said.



These findings not only highlight a natural solution for enhancing coral resilience but also emphasize the interconnectedness of ecosystems and the far-reaching impacts of biodiversity conservation efforts.



The study is published in the journal <a href="http://dx.doi.org/10.1126/sciadv.adj0390" target="_blank" rel="noreferrer noopener">Science Advances</a>.



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Nutrients from seabird poop accelerate coral reef recovery

Tropical coral reefs, celebrated for their extraordinary beauty and biodiversity,...

International,Space,Station,In,2021,In,Space,On,Orbit,Of

NASA recently commemorated a significant milestone in space exploration history: the 25th anniversary of the <a href="https://www.nasa.gov/station" target="_blank" rel="noreferrer noopener">International Space Station</a> (ISS). This celebration was marked with a special live event on December 6, where a space-to-Earth call connected the current crew aboard the ISS with NASA Associate Administrator Bob Cabana and Joel Montalbano, space station program manager.



<h2 class="wp-block-heading" id="h-the-iss-turns-25-years-old">The ISS turns 25 years old</h2>



Operational since 1998, the ISS stands as a testament to human ingenuity and collaboration in space research and exploration. Hosting 273 astronauts from around the world and facilitating over 3,300 research projects, the station has become a cornerstone for advancements in space technology and scientific understanding.



The journey of the ISS began on December 6, 1998, with the attachment of its first two elements, Unity and Zarya, by the crew of the space shuttle Endeavour’s STS-88 mission, led by Bob Cabana. This marked the beginning of a global endeavor that has seen astronauts continuously live and work aboard the station for more than 23 years.



The ISS is a product of international cooperation, involving the Canadian Space Agency, the European Space Agency, the Japan Aerospace Exploration Agency, NASA, and Roscosmos. This partnership has resulted in numerous technological and scientific achievements, with more than 3,300 research and educational investigations from 108 countries. 



These efforts not only advance space exploration but also benefit humanity on Earth, laying the groundwork for future commercial destinations in low Earth orbit and exploration farther into the solar system.



<h2 class="wp-block-heading" id="h-space-station-s-design-and-construction">Space station's design and construction</h2>



The ISS's journey began with its official approval by President Reagan and the US Congress in 1984. NASA Administrator James Beggs played a pivotal role in bringing together international partners, leading to a collaborative design and construction process between 1984 and 1993. The involvement of Canada, Japan, many European nations, and later Russia, was crucial in shaping the ISS.



The development of the ISS proceeded in two phases. Phase 1 involved the NASA-Mir program, where astronauts and cosmonauts conducted joint missions to the Russian Mir Orbital Station. This phase was instrumental in establishing collaborative processes and modifying Russian modules for international experiments. 



Phase 2, commencing in 1998, saw the launch of the new ISS elements, marking a significant step in international space cooperation.



<h2 class="wp-block-heading" id="h-educational-and-scientific-goals">Educational and scientific goals</h2>



The ISS serves as a vital educational platform, inspiring youth worldwide to pursue STEM careers. The collective efforts of the participating space agencies emphasize the importance of applying ISS research in diverse fields such as human physiology, radiation, materials science, engineering, biology, fluid physics, and technology. These endeavors are crucial for future space missions and translating space research benefits back to Earth.



The ISS program is a technological triumph and a remarkable example of international cooperation. It exemplifies the harmonization of cultural and political differences to achieve a common goal in space exploration. The ISS has brought together international crews and a global network of launch, operations, training, engineering, and scientific research communities, showcasing the power of collaborative effort.



<h2 class="wp-block-heading" id="h-what-s-next-for-the-25-year-old-iss">What's next for the 25-year-old ISS?</h2>



As the ISS continues to age, with several components exceeding their original lifespan, ongoing analyses ensure its <a href="https://www.earth.com/news/nasa-initiates-ambitious-plan-to-bring-iss-back-to-earth/" target="_blank" rel="noreferrer noopener">safety and viability</a>. The station's modular design allows for the replacement and augmentation of parts, ensuring its functionality as a laboratory and outpost in orbit. 



Currently, the ISS is set to continue operations until at least 2030, marking an era of continued discovery and international collaboration in space. 



In summary, the 25th anniversary of the ISS is a celebration of a space station and a tribute to the spirit of exploration and cooperation that defines our journey into the cosmos.



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The International Space Station celebrates its 25th anniversary

NASA recently commemorated a significant milestone in space exploration history:...

Red sprites, also known as "red fairies" are a type of transient luminous event (TLE), primarily appearing as red flashes of light occurring above thunderstorms. They are part of a larger family of upper-atmospheric phenomena linked to thunderstorm activity, alongside blue jets and elves. 



Discovered only in the late 20th century, red sprites have since captivated scientists and sky-watchers alike with their elusive and spectacular nature.



<h2 class="wp-block-heading" id="h-andreas-mogensen-video">Andreas Mogensen video</h2>



ESA astronaut <a href="https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/Astronauts/Andreas_Mogensen" target="_blank" rel="noreferrer noopener">Andreas Mogensen</a> captured this image of a red fairy hovering above a thundercloud as a part of the Thor-Davis experiment at <a href="https://www.dtu.dk/english/" target="_blank" rel="noreferrer noopener">Danish Technical University</a>. “Red sprites,” as they are called in scientific circles, are rare Transient Luminous Events (TLEs) that form above thunderclouds. They typically emerge between 40 to 80 kilometers above Earth.



As demonstrated in the <a href="https://www.earth.com/wp-content/uploads/2023/12/red-sprite_Davis-camera-video_ISS_ESA_1big.gif">Davis camera video</a>, thunder precedes the appearance of <a href="https://www.earth.com/image/red-sprites-above-the-u-s-and-central-america/" target="_blank" rel="noreferrer noopener">red fairies</a> higher in the sky. The Davis camera's uniqueness lies in its operation. It functions more like our eyes' retinas, sensitive to light changes, allowing it to capture up to the equivalent of 100,000 frames per second, unlike a standard camera.



<h2 class="wp-block-heading" id="h-red-sprite-discovery-and-background">Red sprite discovery and background</h2>



The existence of red sprites eluded scientific documentation until 1989, largely due to their brief duration and high altitude. 



Pilots had reported sightings of unusual aerial phenomena for years. However, these accounts remained anecdotal until researchers, using high-speed cameras, captured the first images of red sprites. This breakthrough paved the way for a new field of atmospheric research.



Red sprites manifest as reddish-orange flashes, often accompanied by tendrils extending both upward and downward. They typically occur in clusters and can stretch 50 to 90 kilometers above the Earth's surface, into the <a href="https://www.earth.com/news/u-s-rocket-launch-ripped-a-hole-in-earths-ionosphere/" target="_blank" rel="noreferrer noopener">ionosphere</a>. The coloration is a result of nitrogen molecules in the atmosphere getting excited by the electrical discharge.



Red sprites develop in conjunction with large-scale thunderstorm activity, specifically above the intense electrical discharges of positive cloud-to-ground lightning. They are believed to arise from the imbalance in electrical charge between the upper atmosphere and the thunderclouds below.



<h2 class="wp-block-heading" id="h-scientific-significance-and-research">Scientific significance and research</h2>



The study of red sprites offers valuable insights into atmospheric electricity and upper-atmosphere conditions. They play a role in the Earth’s electrical balance and can impact various atmospheric chemical processes.



Advancements in high-speed photography and observational techniques have significantly enhanced our understanding of red sprites. Satellites, airborne observations, and ground-based photometric arrays are now instrumental in studying these transient events.



<h2 class="wp-block-heading" id="h-challenges-of-studying-red-sprites">Challenges of studying red sprites</h2>



Despite advancements, observing and studying red sprites remain challenging due to their unpredictability and brief lifespan. Future research aims to better understand the impact of sprites on the atmosphere and their relation to other meteorological phenomena.



In summary, red sprites, while still shrouded in mystery, offer a fascinating glimpse into the complex interplay of Earth's weather systems and atmospheric electricity. Continued research and observation promise to uncover more secrets of these ephemeral lights, deepening our understanding of our planet's atmospheric dynamics.



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Mysterious "red sprite" captured by space station astronaut

Red sprites, also known as "red fairies" are a type...

3d,Render,Dinosaur.,This,Is,A,3d,Render

An intriguing new study introduces the 'longevity bottleneck' hypothesis, which suggests human aging may be intricately linked to the long period of <a href="https://www.earth.com/news/human-ancestors-coexisted-with-dinosaurs-yes-according-to-shocking-new-research/" target="_blank" rel="noreferrer noopener">dinosaur</a> dominance on Earth. 



This concept was brought to light by Professor João Pedro de Magalhães, a renowned expert in the field of aging from the <a href="https://www.birmingham.ac.uk/index.aspx" target="_blank" rel="noreferrer noopener">University of Birmingham</a>. The hypothesis presents a fascinating connection between the reign of dinosaurs over 100 million years ago and the biological aging processes observed in mammals, including humans.



<h2 class="wp-block-heading" id="h-mesozoic-era-and-mammalian-aging">Mesozoic Era and mammalian aging</h2>



The Mesozoic Era, marked by the domination of dinosaurs, posed significant challenges for early mammals. According to Professor de Magalhães, mammals during this era were under constant pressure for rapid reproduction, primarily due to the threat posed by <a href="https://www.earth.com/news/dinosaurs-are-helping-astronomers-in-the-search-for-extraterrestrial-life/" target="_blank" rel="noreferrer noopener">dinosaurs</a>. 



This prolonged period of evolutionary stress, spanning over 100 million years, is believed to have led to the loss or inactivation of longevity-related genes in <a href="https://www.earth.com/news/incredible-discovery-some-mammals-attacked-dinosaurs-and-they-often-won-the-battle/" target="_blank" rel="noreferrer noopener">early mammals</a>.



Professor Magalhães elaborates on this theory. He states, "We and these mammals, such as elephants and whales, live with the genetic hangups from the Mesozoic era and we age surprisingly faster than many <a href="https://www.earth.com/news/study-reveals-secrets-of-the-evolution-of-prehistoric-reptiles/" target="_blank" rel="noreferrer noopener">reptiles</a>."



He further adds, "The 'longevity bottleneck hypothesis' may shed light on evolutionary forces that have shaped the way that mammals have aged over millions of years. While humans are among the longest-living animals, there are many reptiles and other species that exhibit a much slower aging process and minimal signs of senescence."



<h2 class="wp-block-heading" id="h-dinosaur-dominance-and-human-aging">Dinosaur dominance and human aging</h2>



Professor de Magalhães explains that the earliest mammals, relegated to the lower tiers of the food chain, evolved to prioritize rapid reproduction as a survival strategy during the age of <a href="https://www.earth.com/news/asteroid-impact-sparked-two-years-of-darkness/" target="_blank" rel="noreferrer noopener">dinosaurs</a>. This evolutionary pressure, he proposes, significantly impacts how modern humans age.



"We see examples in the animal world of truly remarkable repair and regeneration. That genetic information would have been unnecessary for early mammals that were lucky to not end up as <a href="https://www.earth.com/news/t-rex-may-have-had-brains-and-brawn/" target="_blank" rel="noreferrer noopener">T Rex</a> food," says Professor de Magalhães. 



He highlights that while mammals including humans, whales, and elephants have evolved to grow larger and live longer, they still bear the genetic consequences of the Mesozoic era, aging faster than many reptiles.



<h2 class="wp-block-heading" id="h-broader-implications-and-future-research">Broader implications and future research</h2>



Professor de Magalhães suggests that this hypothesis, while still in the realm of theory, opens up numerous intriguing research directions. One such avenue is exploring why cancer may be more prevalent in mammals than in other species, possibly due to the rapid aging process instigated during the dinosaur era.



The 'longevity bottleneck' hypothesis posits a profound and previously unexplored connection between the <a href="https://www.earth.com/news/volcanic-winters-weakened-the-dinosaurs-before-the-asteroid-hit/" target="_blank" rel="noreferrer noopener">reign of dinosaurs</a> and the aging process in mammals. This theory provides a novel perspective on the evolutionary history of aging, while also paving the way for further research into the genetic and environmental factors that have influenced mammalian longevity over millions of years. 



Professor de Magalhães' pioneering work opens up a new frontier in understanding the complex interplay between evolution, genetics, and aging.



The full study was published in the journal <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/bies.202300098" target="_blank" rel="noreferrer noopener">BioEssays</a>.



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How dinosaurs influence human aging 65 million years after extinction

An intriguing new study introduces the 'longevity bottleneck' hypothesis, which...

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



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



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



Video/ Image Credit: ESA



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

Nushagak Bay in southwest Alaska

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

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



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



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



Video/ Image Credit: American Chemical Society&nbsp;



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



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

Flu viruses are more flexible than expected

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

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



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



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



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



Video/Image Credit: ESA&nbsp;



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

Lake Trasimeno in Central Italy

[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...

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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



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



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

Designing crops that can beat the heat

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

The grey, gruff worker bent down and chuckled. Everyone stared at him, waiting eagerly for the truth. “Someone was bored,” he said with an amused grin. Bored? What was going on? How was 30-year-old metal connected to boredom. “Feel like clueing in the rest of us?” Tony asked.

Vague Answer

“Anyone know what this is?” he asked, trying to keep his mind firmly within reality – and not jump to wild ideas of hidden <a href="https://www.earth.com/news/treasure-trove-of-fungi-discovered-on-a-south-pacific-island/">treasure</a>. One guy picked up one of the lumps and turned it around in his fingers. It seemed they were all as confused as Tony. It wasn’t until one of the older workers joined them, did he finally get an unexpected answer.