<p>Today's <strong>Image of the Day</strong> from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features a wall of dust moving across the Korean Peninsula on April 25, 2024.</p>



<p>As the Northern Hemisphere ushers in the warmth of spring, East Asia grapples with a less welcome sign of the season: colossal <a href="https://www.earth.com/news/dust-storms-in-the-gulf-of-alaska-help-shape-the-global-climate/" target="_blank" rel="noreferrer noopener">dust storms</a>. </p>



<h2 class="wp-block-heading" id="h-desert-dust-reaches-the-korean-peninsula-nbsp">Desert dust reaches the Korean Peninsula&nbsp;</h2>



<p>Originating from the expansive Gobi and Taklamakan deserts, these dust plumes journey across China, reaching as far as the Korean Peninsula and southern Japan, reshaping the springtime landscape both literally and metaphorically.</p>



<p>The phenomenon was starkly illustrated on April 25, 2024, when NASA's Aqua satellite, equipped with the MODIS (Moderate Resolution Imaging Spectroradiometer) sensor, captured a dramatic image of a massive dust wall traversing the Korean Peninsula.&nbsp;</p>



<h2 class="wp-block-heading" id="h-primary-source-of-the-dust-over-korea">Primary source of the dust over Korea</h2>



<p>The imagery from the preceding day, courtesy of South Korea’s GEO-KOMPSAT-2A satellite and NASA’s Terra and Aqua satellites, pinpointed the Gobi Desert in Inner Mongolia as the primary source of this <a href="https://www.earth.com/news/atmospheric-dust-plays-surprisingly-crucial-role-in-stabilizing-ocean-ecosystems/" target="_blank" rel="noreferrer noopener">dust</a>. </p>



<p>Compounding the environmental spectacle, a phytoplankton bloom, partially veiled by the dust, was visible to the east of the Korean Peninsula, presenting a complex interaction of earth and ocean.</p>



<h2 class="wp-block-heading" id="h-where-does-the-dust-go">Where does the dust go?</h2>



<p>This seasonal dust does not simply settle locally but sometimes ascends high into the atmosphere, occasionally soaring above cloud level. This elevation enables the particles to traverse vast distances, including crossing the Pacific Ocean to North America.&nbsp;</p>



<p>However, not all the <a href="https://www.earth.com/news/sahara-desert-dust-storms-carry-harmful-bacteria-and-fungi-around-the-globe/" target="_blank" rel="noreferrer noopener">dust</a> achieves such heights; much remains nearer to the ground, significantly deteriorating air quality in one of the planet's most densely populated areas.</p>



<p>The health implications of these dust storms are profound. Breathing in the fine particulate matter, particularly PM2.5, is linked to severe cardiovascular and respiratory issues.</p>



<h2 class="wp-block-heading" id="h-dust-storms-in-east-asia-nbsp">Dust storms in East Asia&nbsp;</h2>



<p>Dust storms in East Asia are commonly known as yellow dust, Asian dust, yellow wind, or China dust storms. The storms are typically most frequent in spring and can extend into early summer. They arise when strong winds lift large amounts of sand and dust from deserts in China and Mongolia, then transport these particles across the region.</p>



<p>The key factors contributing to these dust storms include:</p>



<h3 class="wp-block-heading" id="h-natural-conditions">Natural conditions</h3>



<p>The Gobi Desert and other arid regions in China and Mongolia are the primary sources of the dust. The natural aridness and loose soil make these areas prone to dust lift-off under certain meteorological conditions.</p>



<h3 class="wp-block-heading" id="h-meteorological-factors">Meteorological factors</h3>



<p>Spring brings about changes in temperature and pressure, which can result in strong winds. These winds are capable of carrying dust over long distances. The occurrence and intensity of these storms are closely linked to weather patterns such as the strength of the Siberian High and the East Asian jet stream.</p>



<h3 class="wp-block-heading" id="h-human-impact">Human impact</h3>



<p>Overgrazing, <a href="https://www.earth.com/news/global-deforestation-crisis-how-can-we-stop-massive-forest-losses/" target="_blank" rel="noreferrer noopener">deforestation</a>, and land degradation have exacerbated the frequency and intensity of dust storms. Human activities have led to increased desertification, which contributes to the severity of the storms.</p>



<p>Efforts to combat these dust storms have included afforestation projects, such as planting trees to stabilize the soil, and sustainable land management practices aimed at reducing <a href="https://www.earth.com/news/oases-grow-by-human-effort-but-face-threats-from-desertification/" target="_blank" rel="noreferrer noopener">desertification</a>. Regional cooperation among affected countries has also been essential in monitoring and managing the impacts of these dust events.</p>



<h2 class="wp-block-heading" id="h-more-about-the-korean-peninsula-nbsp">More about the Korean Peninsula&nbsp;</h2>



<p>The Korean Peninsula extends southward from the eastern end of the Asian continent and is bordered by the Sea of Japan (East Sea) to the east, the Yellow Sea to the west, and the Korea Strait connecting to the East China Sea to the south. It is divided into two distinct sovereign states: North Korea and South Korea.</p>



<h3 class="wp-block-heading" id="h-historical-context">Historical context</h3>



<p>Historically, the Korean Peninsula was unified for much of its history under various kingdoms such as Goguryeo, Silla, Baekje, and later the Goryeo and Joseon dynasties. The last, the Joseon Dynasty, lasted until the early 20th century.&nbsp;</p>



<p>Following the end of World War II in 1945, the peninsula was divided into North and South Korea in 1948 amid growing Cold War tensions, leading to the Korean War from 1950 to 1953, which ended with an armistice but no formal peace treaty.</p>



<h3 class="wp-block-heading" id="h-cultural-aspects-of-north-and-south-korea">Cultural aspects of North and South Korea </h3>



<p>Korean culture is distinguished by its language, customs, and cuisine. Both North and South Korea share cultural foundations based on their Confucian heritage, which influences social etiquette, family relations, and personal conduct. However, decades of separation have fostered distinct societal developments in each country.</p>



<h3 class="wp-block-heading" id="h-economy">Economy</h3>



<p>North Korea has a largely isolated economy with limited engagement with the international community, heavily reliant on its natural resources and some agricultural output.</p>



<p>South Korea boasts the 10th largest economy in the world (as of 2021), with strong industries in electronics, telecommunications, automobile production, shipbuilding, and chemical manufacturing. It is also a leader in technological innovation and infrastructure.</p>



<h3 class="wp-block-heading" id="h-current-issues">Current issues</h3>



<p>The Korean Peninsula continues to face challenges, including security concerns due to North Korea's nuclear ambitions and the ongoing military tensions between the North and South. </p>



<p>Additionally, both countries deal with internal and external economic pressures, global market dynamics, and cultural exportation impacting global perceptions and economic health.</p>



<p>The Korean Peninsula presents a unique study in contrasts, with profound historical ties and shared cultural elements, yet marked differences in political, economic, and social systems.</p>



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



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Massive wall of dust travels over the Korean Peninsula 

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

<p>Today's <strong>Image of the Day</strong> from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features the picturesque wetlands of Spain's Doñana National Park, This vital ecosystem, located in the Andalusia region, has received some long-awaited rainfall after enduring years of severe <a href="https://www.earth.com/news/climate-change-has-made-droughts-20-times-more-likely/" target="_blank" rel="noreferrer noopener">drought</a> conditions. </p>



<p>A significant increase in rainfall in March 2024 brought temporary relief to this UNESCO World Heritage Site and Biosphere Reserve, known for its rich biodiversity and critical role as a Ramsar Wetland of International Importance.</p>



<h2 class="wp-block-heading" id="h-a-decade-of-drought-in-donana-national-park">A decade of drought in Doñana National Park</h2>



<p>For over a decade, Doñana National Park has faced below-average rainfall levels, with the situation worsening significantly in the past three years. These years have recorded some of the lowest annual precipitation totals, compounded by unusually high temperatures across the country.&nbsp;</p>



<p>The effects of <a href="https://www.earth.com/news/drought-to-downpour-climate-change-triggers-extreme-weather-shifts/" target="_blank" rel="noreferrer noopener">climate change</a> were starkly visible in January 2024, which was noted as Spain's warmest January since records began, with temperatures averaging 2.4 degrees Celsius higher than normal.</p>



<p>The first quarter of 2024 continued this trend, potentially marking it as the warmest first quarter since 1961. The prolonged <a href="https://www.earth.com/news/global-drought-crisis-un-warns-of-unprecedented-emergency/" target="_blank" rel="noreferrer noopener">drought</a> has had a devastating impact on the park’s ecosystem, drying up <a href="https://www.earth.com/news/nearly-all-of-the-worlds-salt-marshes-may-be-underwater-by-2100/" target="_blank" rel="noreferrer noopener">marshes</a> and affecting both flora and fauna.</p>



<h2 class="wp-block-heading" id="h-welcome-change-in-the-weather">Welcome change in the weather</h2>



<p>The heavy rains that arrived in late March 2024 have momentarily brought some relief to the region. Satellite images acquired by the OLI on Landsat 8 and the OLI-2 on Landsat 9 showed significant changes in the landscape by April 9, 2024.&nbsp;</p>



<p>The featured image shows that marshes have been replenished and ponds have been temporarily filled, contrasting sharply with the desolate conditions observed just a year earlier.</p>



<p>A weather station in the park recorded 145 millimeters of rainfall in March 2024, making it the second-wettest March on record. Since the start of the water year in September 2023, the area has received over 400 millimeters of rainfall, surpassing the totals of each of the last three full water years. Despite this increase, the precipitation still falls short of the historical yearly average of more than 500 millimeters.</p>



<h2 class="wp-block-heading" id="h-ecological-responses-and-challenges">Ecological responses and challenges</h2>



<p>The western part of the park is home to thousands of small, shallow pools known as Mediterranean temporary ponds, which naturally experience cycles of flooding and drying. Following the recent rains, several of the largest ponds flooded, as did marsh areas farther inland, though some regions remained dry.</p>



<p>The Doñana Biological Station reported that this influx of water led to a resurgence of vegetation beneficial to breeding waterfowl such as coots, grebes, and herons.&nbsp;</p>



<p>However, despite these positive signs, the challenges remain significant. Development pressures from agricultural fields and an adjacent resort town continue to strain the local aquifer, exacerbating the water scarcity and impacting the wetland's ecological balance.</p>



<h2 class="wp-block-heading" id="h-long-term-concerns-for-donana-national-park">Long-term concerns for Doñana National Park</h2>



<p>Javier Bustamante, a researcher at the Doñana Biological Station, emphasized that while the rainfall has eased some of the immediate drought-related issues, it does not address the deeper problem of groundwater overexploitation.&nbsp;</p>



<p>"The rains have partially alleviated the most immediate drought problems, but they do not solve the invisible problem of groundwater overexploitation," Bustamante stated, highlighting the complex nature of the challenges facing Doñana.</p>



<p>The overall effect of the rainfall will become clearer in the coming months, but experts caution that the changes observed might not signify long-term relief. Conservation efforts continue to focus on managing external pressures and restoring the ecological balance to preserve Doñana National Park for future generations.</p>



<h2 class="wp-block-heading" id="h-more-about-donana-national-park">More about Doñana National Park</h2>



<p>Doñana National Park is one of Europe's most important and diverse natural reserves. This vast park stretches across parts of the provinces of Huelva, Seville, and Cádiz. It was established as a national park in 1969 and covers an area of approximately 543 square kilometers.</p>



<p>The park is celebrated for its extraordinary biodiversity. It serves as a critical stopover, breeding, and wintering site for thousands of European and African migratory birds.&nbsp;</p>



<p>Doñana's complex ecosystem includes <a href="https://www.earth.com/news/coastal-wetlands-are-inching-closer-to-extinction-as-the-world-heats-up/" target="_blank" rel="noreferrer noopener">marshlands</a>, shallow streams, and sand dunes, providing habitat for a wide variety of plant and animal species. Among its notable inhabitants are the Iberian lynx and the Spanish imperial eagle, both of which are endangered species.</p>



<p>Doñana also has a rich cultural heritage; it has been influenced by various civilizations throughout history, including the Romans and Moors. This history is reflected in the archaeological sites found within its boundaries, including the remains of the town of La Algaida.</p>



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



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Doñana National Park gets temporary relief from drought

<p>Today's <strong>Image of the Day</strong> from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features Ruang, a small volcanic island in North Sulawesi, Indonesia. The tranquil environment of Ruang was shattered by a powerful volcanic eruption on the night of April 16, 2024.</p>



<p>This event has left the island's 800 residents grappling with its devastating aftermath, while scientists are assessing its potential global effects.</p>



<h2 class="wp-block-heading" id="h-a-violent-awakening-on-ruang">A violent awakening on Ruang</h2>



<p>Ruang, located in the Sangihe Islands arc, is known for its long history of <a href="https://www.earth.com/news/volcanic-eruptions-play-an-overlooked-role-in-earths-climate/" target="_blank" rel="noreferrer noopener">volcanic activity</a>, but the intensity of the latest eruption has been particularly alarming. The <a href="https://www.earth.com/news/explosive-volcanic-eruption-triggered-an-hours-long-thunderstorm/" target="_blank" rel="noreferrer noopener">eruption</a> produced explosive discharges, sending vast plumes of ash and gas soaring into the stratosphere. The force of nature transformed lush greenery into a gray wasteland.</p>



<p>“Late on April 16, 2024, the mountain roared to life, unleashing a series of explosive eruptions that, at times, sent plumes of ash and gas billowing high into the stratosphere. The eruption also bombarded the island with tephra, small pebbles of lapilli, and fine shards of pulverized rock called ash,” said NASA.</p>



<h2 class="wp-block-heading" id="h-extensive-damage-and-humanitarian-efforts">Extensive damage and humanitarian efforts</h2>



<p>The eruption's immediate impact was severe, with settlements on the north side of Ruang and Laingpatehi village experiencing extensive damage due to volcanic debris.&nbsp;</p>



<p>More than 500 houses were destroyed or severely damaged, according to Indonesia’s disaster management agency, Badan Nasional Penanggulangan Bencana (BNPB). The heavy ashfall also impacted local agriculture, damaging crops and farms.&nbsp;</p>



<p>In response to the crisis, the Sam Ratulangi International Airport in nearby Manado was temporarily closed, disrupting travel and causing widespread flight cancellations. It was not until April 22 that the airport could reopen, following significant cleanup efforts and a decrease in the volcanic threat level.</p>



<h2 class="wp-block-heading" id="h-scientific-analysis-and-global-concerns">Scientific analysis and global concerns</h2>



<p>The eruption has attracted significant scientific interest due to the vast quantities of ash and sulfur dioxide it emitted. Atmospheric scientist Ghassan Taha from NASA’s Goddard Space Flight Center noted, "We expect to see aerosol particles circulating in the stratosphere for weeks, if not months." This observation is critical as particles reaching this altitude can have extensive, albeit temporary, effects on global climate patterns.</p>



<p>Volcanologist Simon Carn from Michigan Technological University reported that the eruption released between 0.3 to 0.5 teragrams of sulfur dioxide on April 17 and 18. These levels, while substantial, fall below the threshold generally required to affect global temperatures significantly.&nbsp;</p>



<p>For context, the 1991 Mount Pinatubo eruption, which had a pronounced cooling effect on the Earth's climate, released approximately 20 teragrams of sulfur dioxide.</p>



<h2 class="wp-block-heading" id="h-preparedness-and-future-risks">Preparedness and future risks</h2>



<p>In light of Ruang's active volcanic history and the potential for further eruptions, local authorities remain vigilant. The risk of lahars and tsunamis prompted immediate evacuations and multiple tsunami warnings, though, fortunately, no substantial tsunamis have occurred thus far. Over 16,000 residents have been evacuated from the most vulnerable areas, a move that has likely prevented any fatalities or serious injuries.</p>



<p>The 2024 <a href="https://www.earth.com/news/underwater-volcanic-eruptions-are-more-harmful-than-previously-believed/" target="_blank" rel="noreferrer noopener">eruption</a> of Ruang is a stark reminder of the powerful and often unpredictable nature of volcanic islands. While the local and immediate impacts are devastating, the eruption also offers valuable data for scientists studying the broader implications of such natural events on atmospheric conditions and climate. </p>



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



<p>The population on Ruang is small, with residents primarily engaged in subsistence fishing and agriculture, which is typical of remote Indonesian islands. The island's terrain and soil fertility, influenced by volcanic ash, may support the cultivation of certain crops that are adapted to such conditions.</p>



<p>The Ruang volcano rises to about 725 meters above sea level, making it a prominent feature in the region. This area is part of the volcanic arc that includes numerous volcanoes produced by the subduction of the oceanic plate under the continental margin.</p>



<p>The active stratovolcano has had several recorded eruptions in history, with significant activity occurring in 1871, 1873, and 2002.&nbsp;</p>



<p>The image was captured by the Operational Land Imager (OLI) on April 20, 2024.</p>



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



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Ruang volcano eruption has devastated the tranquil island

<p>Today's <strong>Image of the Day</strong> from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features the Bermejo River and the Río Grande de Tarija, which flow through Argentina and Bolivia in South America. The photograph was captured by an astronaut onboard the International Space Station.</p>



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



<p>“The meandering rivers in this image are sourced in the Andes Mountains and generally flow southeast through valleys in the foothills - the region between the high mountains and plains. The Iruya River deposits particles of silt and clay as it flows into the valley centered in this image,” said NASA.</p>



<p>“Visible indications of the rivers’ shifting channels include river islands, point bars (on the inside curve of streams), and several meander scars. Such scars form when a river gets cut off from the main flow and fills in with sediment, soil, and vegetation.”</p>



<p>“Sediment from the adjacent highlands filled valleys that were formed by tectonic forces driving uplift of the Andes. These deposits are subsequently carried by rivers, such as the Iruya, along with new sediment to form the light-toned braided channels and the adjacent darker-toned floodplains. Nutrient-rich floodplain soils provide fertile ground for agricultural fields.”</p>



<h2 class="wp-block-heading" id="h-bermejo-river">Bermejo River</h2>



<p>The Bermejo River originates in the Bolivian <a href="https://www.earth.com/news/biodiversity-hotspots-are-shrinking-in-the-andes-mountains/" target="_blank" rel="noreferrer noopener">Andes</a> and flows into Argentina. It plays a crucial role in the geographical and ecological landscape of the region. The river's course is characterized by its meandering path through the Gran Chaco plain, making it a significant river in the region's hydrological system.</p>



<h3 class="wp-block-heading" id="h-economic-importance">Economic importance</h3>



<p>The Bermejo River is vital for agriculture, providing essential water resources for irrigation. It also has potential for hydroelectric power generation.</p>



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



<p>The diverse habitats created by the Bermejo River, including its riverbanks, floodplains, and adjacent forests, support rich biodiversity. However, the wildlife in this region faces threats from habitat destruction, pollution, and climate change, making conservation efforts critical for their survival.</p>



<p><a href="https://www.earth.com/news/jaguars-in-the-amazon-are-threatened-by-climate-extremes/" target="_blank" rel="noreferrer noopener">Jaguars</a> are the apex predators of this region, and are occasionally spotted along the riverbanks, where they hunt. Large, herbivorous mammals called tapirs are found in the forests around the Bermejo River. They often visit the river to drink and cool off.</p>



<p>Capibaras, the world’s largest rodents, are commonly found in the wetlands and along the river edges.</p>



<p>The tallest flying bird found in South and Central America, jabirus can often be seen in wetlands along the Bermejo River. Toco toucans, known for their colorful bills, can be found in the forested areas near the river.</p>



<h2 class="wp-block-heading" id="h-rio-grande-de-tarija">Río Grande de Tarija</h2>



<p>The Río Grande de Tarija, also known in its lower stretches as the Guadalquivir, flows primarily within Bolivia. It is a critical watercourse in the Tarija Department, contributing significantly to the region's agriculture and livelihoods.</p>



<h3 class="wp-block-heading" id="h-economic-importance-0">Economic importance</h3>



<p>This river is essential for irrigation, supporting a variety of crops and contributing to the local economy. The surrounding lands are fertile and productive, thanks to the river's water.</p>



<h3 class="wp-block-heading" id="h-challenges">Challenges</h3>



<p>Similar to other rivers, the Río Grande de Tarija faces challenges such as water management issues, <a href="https://www.earth.com/news/predicting-the-effects-of-pollutants-on-river-ecosystems/" target="_blank" rel="noreferrer noopener">pollution</a>, and the impacts of climate change on its flow and health.</p>



<h3 class="wp-block-heading" id="h-wildlife-in-bolivian-rivers">Wildlife in Bolivian rivers</h3>



<p>River basins in Bolivia are home to a wide range of bird species, including various species of herons, egrets, kingfishers, and perhaps even some rarer species like the wattled jacana or the sunbittern. The diverse birdlife is attracted to the abundance of fish and the relatively untouched natural habitats along the river.</p>



<p>The Characidae family includes many fish species that are commonly found in South American rivers, such as tetras. They are known for their diversity and are a key part of the river's ecosystem, serving as both <a href="https://www.earth.com/news/diving-to-extremes-predatory-fish-frequent-the-oceans-twilight-zone/" target="_blank" rel="noreferrer noopener">predator</a> and prey.</p>



<p>Cichlids are another diverse group of fish that can be found in South American rivers. They are appreciated by aquarium enthusiasts worldwide and play significant roles in their ecosystems as both predators and herbivores.</p>



<p>The rivers of Bolivia are also home to various catfish species, which are well adapted to life in muddy and turbulent waters. These include the armored catfish, which are often found clinging to rocks and logs.</p>



<p>Image Credit: NASA Earth Observatory/ ISS Crew Earth Observations Facility/ Earth Science and Remote Sensing Unit, Johnson Space Center</p>



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

The Río Grande de Tarija and Bermejo River in South America

<p>Today's <strong>Image of the Day</strong> from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features the delta of the Ebro River on the northeast coast of Spain, captured by the Copernicus Sentinel-2 mission.</p>



<h2 class="wp-block-heading" id="h-ebro-river">Ebro River</h2>



<p>“Stretching across 910 km of northern Spain, the Ebro River is the second-longest river in the Iberian Peninsula. In the image, it can be seen as a green line winding its way through the peninsula before flowing into the Mediterranean, shaping the Ebro Delta,” noted ESA.</p>



<p>“The Ebro River discharges more water into the sea than any other river in Spain. As suspended sediment flows from the river’s mouth, it tints the coastal waters with a turquoise hue.”</p>



<h2 class="wp-block-heading" id="h-ebro-delta">Ebro Delta</h2>



<p>The Ebro Delta is one of the largest <a href="https://www.earth.com/news/wetland-methane-emissions-have-surged-at-high-latitudes/">wetland areas</a> in the western Mediterranean region. The river's basin is the largest in Spain, covering about 85,000 square kilometers.</p>



<h2 class="wp-block-heading" id="h-historical-significance-nbsp">Historical significance&nbsp;</h2>



<p>Historically, the Ebro River has been significant in numerous battles, including the famous Battle of the Ebro during the Spanish Civil War, which was one of the war's longest and deadliest conflicts.&nbsp;</p>



<h2 class="wp-block-heading" id="h-economic-significance-nbsp">Economic significance&nbsp;</h2>



<p>Economically, the Ebro plays a crucial role in agriculture, particularly in regions like La Rioja and Navarre, which are known for their vineyards. Additionally, the river supports various industries and hydroelectric power generation.</p>



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



<p>The Ebro Delta is ecologically rich, providing habitat for diverse bird species. It is also a vital area for rice cultivation in Spain.&nbsp;</p>



<h3 class="wp-block-heading" id="h-nature-reserve">Nature reserve</h3>



<p>“Most of the delta comprises the Ebro Delta Nature Reserve. With its protected wetlands, beaches, marshes, salt pans and estuaries, this reserve provides a natural habitat for numerous migratory birds and waterfowl,” said ESA.</p>



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



<p>The river and its delta face environmental challenges such as pollution, water extraction for irrigation, and the impacts of <a href="https://www.earth.com/news/climate-change-may-have-altered-river-flow-worldwide/">climate change</a>, which threaten its ecosystem and the sustainability of its water resources.</p>



<h2 class="wp-block-heading" id="h-the-northeast-coast-of-spain">The northeast coast of Spain</h2>



<p>The northeast coast of Spain is a vibrant and diverse region, characterized by its rich history, unique culture, and stunning landscapes. </p>



<p>It includes the autonomous communities of Catalonia, which features the dynamic city of Barcelona, and part of the Valencian Community. This area is also part of what is known as the Costa Brava, which stretches from the town of Blanes up to the French border.</p>



<h3 class="wp-block-heading" id="h-geography">Geography</h3>



<p>The <a href="https://www.earth.com/news/human-activity-impacts-97-percent-of-the-worlds-coastline/">coastline</a> is renowned for its rugged beauty, with rocky cliffs, secluded coves, and small beaches. The interior regions feature mountains such as the Pyrenees, which offer skiing in winter and hiking in the summer.</p>



<h3 class="wp-block-heading" id="h-cultural-heritage">Cultural heritage</h3>



<p>The area has a strong cultural identity, particularly in Catalonia, where there is a significant movement for independence. The Catalan language is widely spoken alongside Spanish. The region is also known for its festivals, architecture (notably the works of Antoni Gaudí in Barcelona), and traditional dances like the Sardana.</p>



<h3 class="wp-block-heading" id="h-cuisine">Cuisine</h3>



<p>The cuisine is a delightful mix of fresh seafood from the Mediterranean, traditional Catalan dishes like "pa amb tomàquet" (bread with tomato), and rice dishes such as paella in the Valencian region. The area is also famous for its wines, including the sparkling wine Cava.</p>



<h3 class="wp-block-heading" id="h-tourism">Tourism</h3>



<p>The northeast coast attracts millions of tourists each year due to its beautiful beaches, historical sites, and vibrant cities. Barcelona, in particular, is a major tourist destination with attractions like the Sagrada Familia, Park Güell, and the bustling La Rambla.</p>



<h3 class="wp-block-heading" id="h-economy">Economy</h3>



<p>The economy of the northeast coast is one of the most dynamic in Spain, with Barcelona serving as a major hub for trade, education, entertainment, and technology.</p>



<p>Image Credit: NASA Earth Observatory</p>



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The Ebro River on the northeast coast of Spain

<p>Today's <strong>Image of the Day</strong> from <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA Earth Observatory</a> features the United Arab Emirates, where a slow-moving storm system dumped more than a year's worth of rainfall in just a few hours. </p>



<p>“The UAE’s National Center for Meteorology reported that eastern parts of the country measured up to 250 millimeters (10 inches) of rain in less than 24 hours. UAE, known for its dry desert climate, receives only about 140 to 200 millimeters (5.5 to 8 inches) of rainfall per year,” said NASA.</p>



<p>“Dubai International Airport recorded 119 millimeters on April 16, which is 1.5 times its typical annual rainfall. The deluge temporarily halted flights at the airport, which is among the world’s busiest for international travel.”</p>



<h2 class="wp-block-heading" id="h-heaviest-rainfall-on-record-in-the-united-arab-emirates-nbsp">Heaviest rainfall on record in the United Arab Emirates&nbsp;</h2>



<p>Authorities noted that this was the heaviest <a href="https://www.earth.com/news/record-heat-fueled-unexpected-and-deadly-storms-in-2023/" target="_blank" rel="noreferrer noopener">rainfall</a> on record in the United Arab Emirates. The news agency WAM called it a historic weather event that surpassed “anything documented since the start of data collection in 1949.”&nbsp;</p>



<p>“Heavy rain triggered flash flooding across eastern parts of the country, inundating roads and disrupting transportation,” said NASA. “The system first hit Oman on April 14 and continued to batter the UAE through most of the day on April 16.”&nbsp;</p>



<p>At least 18 people were killed in the <a href="https://www.earth.com/news/heavy-rainfall-events-in-the-northeast-are-set-to-increase-by-over-50-percent/" target="_blank" rel="noreferrer noopener">heavy rains</a> in Oman, including ten children that were swept away in a vehicle with one adult, according to a statement from the country’s National Committee for Emergency Management.&nbsp;</p>



<h2 class="wp-block-heading" id="h-strong-low-pressure-system">Strong low-pressure system</h2>



<p>Michael Mann, a climate scientist at the University of Pennsylvania, noted that three low-pressure systems formed a train of <a href="https://www.earth.com/news/thunderstorms-are-becoming-more-intense-due-to-climate-change/" target="_blank" rel="noreferrer noopener">storms</a> slowly moving along the jet stream - the river of air that moves weather systems - toward the Persian Gulf.&nbsp;</p>



<p>“The strong low-pressure system delivered multiple rounds of high winds and heavy rain to the northern and eastern parts of the country,” said NASA. “Some areas remained flooded on April 19, when Landsat 9 passed over the region for the first time since the storms.”&nbsp;</p>



<p>Climate experts attribute such extreme weather events to <a href="https://www.earth.com/news/limiting-global-warming-to-1-5-degrees-celsius-would-save-billions-of-lives/" target="_blank" rel="noreferrer noopener">global warming</a>. According to a report from Reuters, researchers anticipate that climate change will lead to hotter temperatures, increased humidity, and a greater risk of <a href="https://www.earth.com/news/seeking-ways-to-prevent-flooding-caused-by-climate-change/" target="_blank" rel="noreferrer noopener">flooding</a> in parts of the Gulf region. “Countries like the UAE where there is a lack of drainage infrastructure to cope with heavy rains can suffer the most,” the report stated.&nbsp;</p>



<h2 class="wp-block-heading" id="h-more-about-the-united-arab-emirates-nbsp">More about the United Arab Emirates&nbsp;</h2>



<p>The United Arab Emirates (UAE) is a federation of seven emirates located on the eastern side of the Arabian Peninsula. It borders Oman and Saudi Arabia, and has maritime borders with Iran and Qatar in the Persian Gulf. Established as a federation in 1971, the UAE has rapidly developed into one of the most modern and wealthy nations in the world, largely thanks to its vast oil and natural gas reserves.</p>



<p>Abu Dhabi serves as the capital and is the largest emirate, both in terms of land area and economy, largely because it holds the majority of the UAE's oil reserves. Dubai is the most populous city and is renowned globally for its spectacular skyscrapers, including the Burj Khalifa, the tallest building in the world, as well as its bustling ports, and vibrant tourism and shopping sectors.</p>



<p>The UAE has a diverse and multicultural society with a significant expatriate population, drawn by business opportunities and the tax-free living in many sectors. The official language is Arabic, though English is widely spoken, especially in business and educational settings.</p>



<p>Politically, the UAE is a federal absolute monarchy. It is governed by a Supreme Council of Rulers made up of the seven emirs, who appoint the prime minister and the cabinet. The country has made significant strides in terms of infrastructure and healthcare, and it continues to invest heavily in various sectors including renewable energy, education, and technology.</p>



<p>Culturally, the UAE balances its rapid modernization with a strong commitment to traditional Arab culture. The heritage of the desert Bedouin lifestyle is celebrated with falconry, camel racing, and traditional dance remaining integral to its cultural festivities. The nation is also a major hub for international arts and sports events, enhancing its global profile and cultural footprint.</p>



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



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Storms dumped record rainfall in the United Arab Emirates

Plastic,Boxes,With,Pre-packaged,Vegetable,Salads,,Put,Up,For,Sale

<p>We use plastic wrap, containers, and <a href="https://www.earth.com/news/who-is-responsible-for-the-burden-of-plastic-packaging-waste/" target="_blank" rel="noreferrer noopener">packaging</a> all the time. It's convenient, affordable, and seemingly everywhere. Recent research by the Norwegian University of Science and Technology (<a href="https://www.ntnu.edu" target="_blank" rel="noreferrer noopener">NTNU</a>) reveals a shocking truth: our plastic food packaging harbors thousands of different chemicals that may pose significant health risks.</p>



<h2 class="wp-block-heading" id="h-chemicals-in-plastic-food-packaging">Chemicals in plastic food packaging</h2>



<p>Scientists uncovered a staggering 9,936 different chemicals within a single plastic product used to package food. This finding underscores the vast gaps in our understanding of the precise chemical makeup of everyday plastic items and their potential impacts on our well-being.</p>



<p>"Plastic is a very complex material that can contain many different chemicals, some of which can be harmful. This is also true for plastic food packaging,"&nbsp;says Martin Wagner, an NTNU professor who specializes in plastic chemicals.</p>



<h2 class="wp-block-heading" id="h-consequences-of-plastic-food-packaging">Consequences of plastic food packaging</h2>



<p>Many of the chemicals identified in <a href="https://www.earth.com/news/plastic-containers-may-release-forever-chemicals-into-food/" target="_blank" rel="noreferrer noopener">plastic</a> food packaging are not just passive elements; they actively disrupt crucial bodily functions. These disruptions can have profound and potentially long-term health effects.</p>



<h3 class="wp-block-heading">Messing with the metabolism</h3>



<p>Metabolism is essentially your body's engine. It converts the food you eat into energy, fuels cellular processes, and regulates how nutrients are stored and used. </p>



<p>This complex system is finely tuned, ensuring that your body functions efficiently. However, chemicals leached from <a href="https://www.earth.com/news/new-packaging-food-waste/" target="_blank" rel="noreferrer noopener">plastic</a> food packaging can interfere with this system. </p>



<p>For example, certain chemicals can mimic or block natural hormonal signals that control metabolism. This interference can lead to a decrease in metabolic efficiency, impacting energy levels, weight management, and overall health. </p>



<p>The disruption can also affect how your body processes vitamins and minerals, potentially leading to nutritional deficiencies.</p>



<h3 class="wp-block-heading">Hormonal havoc</h3>



<p>Hormones play a pivotal role in regulating virtually every bodily function, including growth, development, metabolism, and mood. They act as messengers, sending signals throughout the body to sustain balance and respond to environmental changes. </p>



<p>The chemicals found in plastic packaging, however, can disrupt this delicate balance. Some chemicals act as endocrine disruptors, which means they can mimic or inhibit natural hormones. </p>



<p>When these chemicals enter the body, they can bind to hormone receptors, block natural hormonal messages, or alter the normal production of hormones. </p>



<p>This disruption can lead to a multitude of health issues, ranging from developmental problems and reproductive issues to immune system dysfunctions and behavioral changes.</p>



<p>"In most of these <a href="https://www.earth.com/video/edible-biodegradable-food-packaging/" target="_blank" rel="noreferrer noopener">plastic</a> products, we found chemicals that can affect the secretion of hormones and metabolism," says Wagner.</p>



<h2 class="wp-block-heading" id="h-but-isn-t-plastic-inert">But isn't plastic inert?</h2>



<p>You might think that plastic is harmless – it's just a chemically neutral substance. However, as shown in another recent NTNU study, scientists found that several combinations of plastic chemicals can affect how your body sends and receives signals.</p>



<p>This finding suggests that plastic's impact goes beyond simple containment of goods. Instead, it actively engages with biological processes, potentially leading to a cascade of unwanted effects. </p>



<p>The implication here is stark: plastic, far from being chemically neutral, carries a variety of active compounds that can interfere with our body's most fundamental operations.</p>



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



<p>While the discovery of harmful chemicals in plastic food packaging is indeed concerning, it's important to remember that you have the power to make choices that reduce your exposure and improve your overall health.</p>



<h3 class="wp-block-heading">Choosing safer alternatives</h3>



<p>Glass or steel containers are considered to be the safest bet. These materials are inert, meaning they do not react with the foods stored inside them. </p>



<p>Glass and steel are durable, reusable, and free from the chemicals typically found in plastics. Using glass or stainless steel containers for everyday food storage and meal prep can significantly decrease your exposure to potentially harmful chemicals.</p>



<h3 class="wp-block-heading">Avoid heating food in plastic</h3>



<p>When plastic is heated, whether in a microwave or by other means, it increases the likelihood of chemical leaching. To avoid this risk, never use plastic containers for heating food in the microwave. Instead, transfer food to glass or ceramic containers that are designed to withstand high temperatures.</p>



<h3 class="wp-block-heading">Be informed and vigilant</h3>



<p>Start by familiarizing yourself with the materials used in the products you buy. Look specifically for products labeled "BPA-free". </p>



<p><a href="https://www.earth.com/news/common-plastic-items-pose-a-hidden-risk-to-childrens-gut-health/" target="_blank" rel="noreferrer noopener">Bisphenol A (BPA)</a> is one of the better-known chemicals that can leach from plastics and has been linked to various health issues, including hormonal disruptions and increased risk of cancer. </p>



<p>While BPA-free products are a safer choice, they may still contain other harmful chemicals, so continued caution and a push for broader safety testing and transparency in labeling are essential.</p>



<p>Taking these steps can significantly reduce your personal and family's exposure to harmful chemicals found in plastic products. </p>



<p>While broader change in how plastics are manufactured must come from industry and legislation, individual actions can collectively lead to greater demand for safer products and ultimately drive change in production practices.</p>



<h2 class="wp-block-heading" id="h-a-call-for-safer-plastics">A call for safer plastics</h2>



<p>Martin Wagner and his team believe the problem isn't plastic itself, but the chemicals added to it. With more research on exactly which chemicals pose the biggest threats, we may one day have plastic packaging that's completely safe – a win for both our health and the environment.</p>



<p>While we still don't know the long-term effects of constant exposure to these chemicals, scientists at NTNU believe that now is the time to overhaul our plastic manufacturing.</p>



<p>"These and previous findings show that plastic exposes us to toxic chemicals. They support the theory that we need to redesign plastic to make it safer," states Wagner.</p>



<p>The study is published in the journal <em><a href="https://pubs.acs.org/doi/10.1021/acs.est.3c08250" target="_blank" rel="noreferrer noopener">Environmental Science &amp; Technology</a></em>.</p>



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9936 chemicals found in plastic products used for food packaging

We use plastic wrap, containers, and packaging all the time....

<p>Spring invites us to witness the spectacle of bird migrations. But have you ever wondered how <a href="https://www.earth.com/news/bird-flocks-social-relationships/" target="_blank" rel="noreferrer noopener">birds</a> manage such precise, collective movement? A recent study from New York University (<a href="https://www.nyu.edu" target="_blank" rel="noreferrer noopener">NYU</a>) offers fascinating insights into bird flocking and their aerodynamic mystery.</p>



<h2 class="wp-block-heading" id="h-bird-flocking-aerodynamics">Bird flocking aerodynamics</h2>



<p>A team of mathematicians has recently illuminated the dynamics behind large, swirling flocks of birds. The research reveals that birds heavily depend on aerodynamics - the science of air movement around objects - to coordinate their seemingly effortless flight. </p>



<p>Each <a href="https://www.earth.com/news/birds-lead-flock-strongest-flyers/" target="_blank" rel="noreferrer noopener">bird</a> functions as a compact, feathery powerhouse. Its wings do more than propel it forward; they also generate swirling air currents. These currents are crucial, as they enable birds to manipulate the airspace around them. This manipulation forms the intricate patterns and synchronized movements observed in flocks.</p>



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



<p>The scientists found that the air currents generated by <a href="https://www.earth.com/news/how-birds-brains-evolved-to-enable-them-to-fly/" target="_blank" rel="noreferrer noopener">birds</a> are not random. They interact with each other in a highly organized manner. These interactions, which resemble the behavior of springs, create a network of unseen forces that link neighboring birds. </p>



<p>The network helps maintain the positions of birds within the <a href="https://www.earth.com/news/mixed-species-foraging-flocks/" target="_blank" rel="noreferrer noopener">flock</a>. If birds drift from their spots, the interactive forces pull them back into place. This contributes to the overall stability and structure of the formation.</p>



<p>"If a flyer is displaced from its position, the vortices or swirls of flow left by the leading neighbor helps to push the follower back into place and hold it there," explained Leif Ristroph, a co-author of the study.</p>



<h2 class="wp-block-heading" id="h-small-bird-flocks">Small bird flocks</h2>



<p>While these helpful air currents create a beautiful order in small groups of birds, the system breaks down as the <a href="https://www.earth.com/news/birds-blend-in-to-adapt-to-diverse-environments/" target="_blank" rel="noreferrer noopener">flock</a> size increases. In larger flocks, the individual air currents from many birds start to clash and interfere with one another. This disruption weakens the stabilizing "spring" forces. </p>



<p>As a result, the formation becomes chaotic. Imagine lots of swirling forces bumping into each other. This leads to a loss of the organized structure seen in smaller flocks.</p>



<p>"The very long groups seen in some types of birds are not at all easy to form, and the later members likely have to constantly work to hold their positions and avoid crashing into their neighbors," explained Ristroph.</p>



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



<p>When a large flock is overwhelmed by these clashing air currents, the disruption doesn't hit all the birds at once. Instead, the scientists observed a ripple effect – the disorganized movement started with certain birds and then spread throughout the rest of the flock in a wave-like pattern. </p>



<p>This chain reaction of jostling within the flock is a unique scientific phenomenon, and the researchers have given it a catchy name: "flonons." This term might become a new addition to our science vocabulary, especially as we learn more about the fascinating world of animal movement.</p>



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



<p>The discovery of how birds flock reveals more than just the remarkable abilities of these creatures; it has significant potential implications for human-designed systems and technologies. </p>



<p>The insights from studying aerodynamic interactions in bird flocks can enhance machine design. These insights could lead to more efficient, aerodynamically optimized machines. Possible improvements include better vehicle formation dynamics. </p>



<p>This would reduce drag and lower energy consumption. There could also be advancements in deploying autonomous drones that need to operate effectively in swarms.</p>



<p>Additionally, the principles of bird flocking could enhance the design of wind turbines, optimizing them for better energy capture based on how air flows naturally around objects in motion. This research bridges the gap between natural phenomena and engineered solutions, offering a blueprint for innovation across various fields.</p>



<p>“This area of research is important since animals are known to take advantage of the flows, such as of air or water, left by other members of a group to save on the energy needed to move or to reduce drag or resistance,” explained Ristroph.</p>



<p>The next time you see a flock of birds painting the sky with their organized chaos, remember: you're witnessing some seriously complex engineering by Mother Nature. It's a symphony of aerodynamics, invisible springs, and perhaps some squawky arguments over who gets the best drafting position.</p>



<p>The study is published in the journal <em><a href="https://www.nature.com/articles/s41467-024-47525-9" target="_blank" rel="noreferrer noopener">Nature Communications</a></em>.</p>



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Bird flocking dynamics inspire advancements in technology

Spring invites us to witness the spectacle of bird migrations....

<p>Arbor Day originated in the United States during the early 1870s. The idea was conceived by J. Sterling Morton, a journalist and politician who moved from Detroit to the Nebraska Territory.&nbsp;</p>



<p>Morton was an agricultural enthusiast who recognized the environmental and economic value of trees. In the largely treeless plains of Nebraska, trees were needed for building materials, shade from the hot sun, and windbreaks to keep soil in place.</p>



<h2 class="wp-block-heading" id="h-origins-of-arbor-day">Origins of Arbor Day</h2>



<p>Morton first proposed a tree-planting holiday called "Arbor Day" at a meeting of the Nebraska State Board of Agriculture on January 4, 1872. The proposal was well received, and the first Arbor Day was celebrated in Nebraska on April 10, 1872. It was a huge success, with an estimated one million trees planted on that day.</p>



<p>The idea of an annual day specifically for planting trees quickly spread beyond Nebraska. Today, Arbor Day is observed in many countries around the world, each adapting the celebration to its own climate.&nbsp;</p>



<p>In the United States, it is typically celebrated on the last Friday in April, but many states observe the holiday on different dates that coincide with their local <a href="https://www.earth.com/news/planting-forests-with-diverse-tree-species-increases-likelihood-of-success/" target="_blank" rel="noreferrer noopener">tree planting</a> season. For example, Hawaii celebrates on the first Friday of November.</p>



<h2 class="wp-block-heading" id="h-why-are-trees-so-important">Why are trees so important?</h2>



<p>Trees are not just essential components of our natural landscape but vital guardians of our environment. These perennial plants do more than beautify our surroundings; they are fundamental to life on Earth.</p>



<h3 class="wp-block-heading" id="h-ecological-benefits-of-trees">Ecological benefits of trees</h3>



<p>The ecological significance of trees cannot be overstated. Primarily, they play a crucial role in mitigating climate change through carbon sequestration. Trees absorb <a href="https://www.earth.com/news/tree-rings-reveal-the-carbon-storage-capacity-of-a-forest/" target="_blank" rel="noreferrer noopener">carbon dioxide</a>, a predominant greenhouse gas, converting it into biomass through the process of photosynthesis. </p>



<p>This not only reduces the amount of harmful gases in the atmosphere but also provides us with oxygen, essential for life. A mature leafy tree produces as much oxygen in a season as 10 people inhale in a year.</p>



<p>Furthermore, trees contribute to increased biodiversity. They serve as habitats for countless species. Birds, insects, fungi, and moss are just a few examples of the life forms that depend on trees for survival.&nbsp;</p>



<p>The variety of life supported by trees enhances genetic diversity, which is vital for adaptation and resilience in the face of environmental changes.</p>



<h3 class="wp-block-heading" id="h-economic-benefits-of-trees">Economic benefits of trees</h3>



<p>Economically, trees offer significant advantages. In urban areas, they improve home values by up to 15% or more due to their aesthetic appeal and their role in creating a pleasant microclimate.&nbsp;</p>



<p>Beyond aesthetics, trees provide raw materials for industries such as furniture, paper, and construction. Fruit and nut trees contribute to food resources, providing both nourishment and economic gains through agriculture.</p>



<p>Trees also have a profound impact on energy consumption. By providing shade and releasing moisture into the air through their leaves, trees can reduce the need for air conditioning in nearby buildings by 30%. This not only cuts down energy costs but also reduces the strain on power grids during peak summer months, thereby decreasing the likelihood of power outages.</p>



<h3 class="wp-block-heading" id="h-health-benefits">Health benefits</h3>



<p>The health benefits of trees extend beyond their environmental and economic contributions. They play a significant role in improving air quality by filtering pollutants such as dust, microplastics, and gases through their leaves and bark. Urban vegetation can reduce pollutants in the air by up to 25%, contributing to healthier <a href="https://www.earth.com/news/non-native-trees-have-enormous-value-in-urban-areas/" target="_blank" rel="noreferrer noopener">urban environments</a>.</p>



<p>Moreover, trees have been shown to have a positive impact on <a href="https://www.earth.com/news/urban-forest-bathing-fresh-breath-for-teen-mental-health/" target="_blank" rel="noreferrer noopener">mental health</a>. The presence of green spaces in urban areas can lower rates of psychological stress and illness. People living near trees often have lower levels of stress, and children diagnosed with attention deficit hyperactivity disorder (ADHD) show fewer symptoms when they have access to nature.</p>



<h3 class="wp-block-heading" id="h-environmental-challenges">Environmental challenges</h3>



<p>Despite their immense benefits, trees face numerous threats, including deforestation, land development, and climate change. These challenges underscore the need for concerted conservation efforts.&nbsp;</p>



<p>Planting trees is a simple yet powerful act that can lead to significant environmental improvements. Arbor Day and similar celebrations can serve as vital reminders of our responsibilities toward forest conservation and management.</p>



<h2 class="wp-block-heading" id="h-significance-of-arbor-day">Significance of Arbor Day</h2>



<p>Arbor Day is significant for several reasons, primarily centered around environmental awareness and conservation.</p>



<h3 class="wp-block-heading" id="h-education-and-awareness">Education and awareness</h3>



<p>Arbor Day serves as an opportunity to educate the public about the benefits that trees and <a href="https://www.earth.com/news/forests-play-an-overlooked-role-in-the-climate-system/" target="_blank" rel="noreferrer noopener">forests</a> provide to communities and the global environment. It encourages people to learn about tree care and forest management.</p>



<h3 class="wp-block-heading" id="h-community-involvement">Community involvement</h3>



<p>The day promotes community spirit as people come together to beautify their neighborhoods and public spaces. It is a chance for community engagement through collective action, which can strengthen community bonds and foster civic pride.</p>



<h3 class="wp-block-heading" id="h-legacy-and-sustainability">Legacy and sustainability</h3>



<p>Planting trees on Arbor Day is also about investing in the future. Trees planted today will grow to provide benefits for many years, making it a gesture of hope and sustainability for future generations.</p>



<p>Arbor Day serves as an important reminder that trees are more than just part of our natural landscape; they are essential for sustaining ecological balance, supporting economic development, and promoting health. By understanding and promoting the importance of trees, we can all contribute to a healthier, more sustainable world.&nbsp;</p>



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Arbor Day: Honoring the guardians of our environment

Arbor Day originated in the United States during the early...

<p>Dog aggression is a serious concern for pet owners, as it can be unsettling, stressful, and even dangerous, not only for the dog but also for other pets, family members, and strangers.&nbsp;</p>



<p>Given the complexities and varying degrees of <a href="https://www.earth.com/news/understand-dogs-language-aggression/" target="_blank" rel="noreferrer noopener">aggressive</a> behaviors, Dr. Lori Teller, a clinical professor at the <a href="https://vetmed.tamu.edu/" target="_blank" rel="noreferrer noopener">Texas A&amp;M School of Veterinary Medicine and Biomedical Sciences</a>, provides expert guidance on recognizing and addressing these behaviors effectively.</p>



<h2 class="wp-block-heading" id="h-dog-aggression-with-no-apparent-trigger-nbsp">Dog aggression with no apparent trigger&nbsp;</h2>



<p>One particularly severe and complex form of aggression is rage syndrome, which causes dogs to exhibit extreme aggression without any apparent <a href="https://www.earth.com/news/dogs-appear-to-get-jealous-over-their-owners-affection/" target="_blank" rel="noreferrer noopener">triggers</a>. </p>



<p>“Dogs with rage syndrome have episodes of extreme aggression toward a person or other animals that occur seemingly out-of-the-blue and without provocation, yet they otherwise appear friendly and happy,” explained Dr. Teller.&nbsp;</p>



<p>This condition is notoriously challenging to diagnose and treat, since the causes, which may include genetic and neurological factors, remain unclear.&nbsp;</p>



<p>“No identifiable trigger leading up to the attack is one clear sign of rage syndrome. Additional signs include confusion or seeming dazedness during or immediately after an episode, glazed eyes, dramatic escalation of aggression without any warning, and unpredictability of episodes,” noted Dr. Teller.</p>



<h2 class="wp-block-heading" id="h-conflict-and-fear-based-dog-aggression">Conflict- and fear-based dog aggression</h2>



<p>It is crucial not to confuse rage syndrome with conflict- or fear-based aggression, which are more common and natural responses to perceived threats or conflicts.&nbsp;</p>



<p>According to Dr. Teller, there is usually a clearly identifiable trigger for other types of aggression, unlike with rage syndrome. Yet, some owners have difficulties reading a dog's <a href="https://www.earth.com/news/dogs-and-humans-process-social-information-in-surprisingly-similar-ways/" target="_blank" rel="noreferrer noopener">body language</a> or recognizing the trigger. </p>



<p>In cases of <a href="https://www.earth.com/news/aggressive-behavior-in-dogs-is-most-often-caused-by-fear/" target="_blank" rel="noreferrer noopener">fear-based</a> or conflict aggression, dogs often display warning signs before an attack, including a hunched body posture, lip-licking, trembling, baring teeth, growling, or snapping. </p>



<p>These forms of aggression are often defensive in nature, but dogs may also exhibit predatory behaviors that appear aggressive but are actually offensive and driven by the dog’s instinct to pursue prey.</p>



<h2 class="wp-block-heading" id="h-effectively-managing-aggression-nbsp">Effectively managing aggression&nbsp;</h2>



<p>When a dog exhibits aggressive behavior, owners should avoid intervening physically during an episode to prevent injuries. After the episode has subsided, it's crucial to consult a veterinarian.&nbsp;</p>



<p>“The veterinarian will obtain a complete behavioral history and probably perform some diagnostic tests to rule out a medical problem that has led to the aggressive behaviors,” said Dr. Teller. “An example of a medical problem that may trigger an aggressive response is when someone touches a painful area, such as with osteoarthritis or an ear infection.”</p>



<p>By contrast, “rage syndrome can be caused by seizure-like activity in the brain, so veterinarians may recommend an electroencephalogram, a test that measures electrical activity in the brain, or an advanced imaging modality such as an MRI or CT scan, which takes detailed images of the brain to identify any abnormalities in its structure,” she added.</p>



<h2 class="wp-block-heading" id="h-long-term-management-of-dog-aggression-nbsp">Long-term management of dog aggression&nbsp;</h2>



<p>Long-term management of aggression requires a comprehensive approach that includes both medical and behavioral interventions.&nbsp;</p>



<p>Depending on the underlying cause of aggression, dogs may be given an anxiolytic medication to relieve anxiety, an anticonvulsant to control the risk of seizures, or a combination of such medications. A behavioral modification plan is also essential and may involve referral to a veterinary behaviorist.</p>



<p>Understanding the different forms of aggression and seeking professional assistance when necessary can help dog owners provide the necessary care and support for their pets.&nbsp;</p>



<p>By addressing aggression effectively, the impact on the dog’s life and the broader household can be minimized, leading to a safer and more harmonious living environment.</p>



<h2 class="wp-block-heading" id="h-more-about-aggressiveness-in-dogs">More about aggressiveness in dogs</h2>



<p>Dog aggression is a significant behavioral issue that can manifest in various forms, ranging from growling and snapping to biting. It often arises due to multiple factors including genetics, lack of socialization, poor <a href="https://www.earth.com/news/dog-training-is-more-effective-when-nice-voice-tone-is-used/" target="_blank" rel="noreferrer noopener">training</a>, fear, or a previous negative experience. </p>



<p>Dogs may also exhibit aggressive behaviors when they're trying to assert dominance or protect their territory, owners, or resources such as food, toys, or other objects.</p>



<p>Understanding the triggers of aggression is crucial for managing it effectively. This involves observing when the aggression occurs, such as in the presence of other dogs or strangers, during meals, or in specific locations like their resting area.&nbsp;</p>



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Can you control your dog’s aggression?

Dog aggression is a serious concern for pet owners, as...

<p>Let's face it: resisting that extra slice of chocolate cake or those tempting cookies can be a real struggle. We've all been there. But have you ever wondered why some people seem to have an easier time making healthy choices than others? New research suggests that our body mass index (BMI) might play a role in our snacking battles. Being <a href="https://www.earth.com/news/obesity-now-affects-more-than-a-billion-people/" target="_blank" rel="noreferrer noopener">overweight</a> changes brain activity and makes it harder to resist unhealthy foods.</p>



<h2 class="wp-block-heading" id="h-brain-dilemma-of-overweight-individuals">Brain dilemma of overweight individuals </h2>



<p>Canadian scientists from <a href="https://www.queensu.ca" target="_blank" rel="noreferrer noopener">Queen's University</a> conducted a study to understand how the brain influences our food choices. They used MRI scans to monitor the brain activity of 123 individuals. Participants were presented with different food choices and asked to make decisions.</p>



<p>The researchers discovered that individuals with a higher BMI experienced significantly more mental effort when choosing healthy foods over preferred snacks.</p>



<p>"We examined how brain states change when making natural and regulated dietary choices in an established food task. Individuals with lower weight status could successfully modify their eating behaviours while maintaining similar modes of brain activity. Individuals with higher <a href="https://www.earth.com/news/obesity-can-be-passed-down-from-parents-to-kids/" target="_blank" rel="noreferrer noopener">weight</a> status could not rely on this mechanism," noted the study authors.</p>



<p>The research highlights a concerning prediction: over 18% of the world's adult population will likely be obese by 2025. This statistic emphasizes that many people find it challenging to maintain a healthy diet.</p>



<h2 class="wp-block-heading" id="h-brain-activity-of-overweight-individuals">Brain activity of overweight individuals</h2>



<p>The Canadian study's key takeaway lies in how the brain orchestrates food choices in individuals with varying BMIs. Here's a deeper dive into what the researchers may have observed in the brain scans:</p>



<h3 class="wp-block-heading" id="h-lower-bmi">Lower BMI</h3>



<p>People with lower BMIs likely exhibited a steadier pattern of brain activity during food selection. This stability suggests their brains didn't require a significant shift in function to prioritize healthy options. </p>



<p>Over time, individuals with lower BMIs might have developed well-defined neural pathways associated with healthy eating behaviors. These pathways act like established highways within the brain, making healthy choices more automatic and requiring less conscious effort. </p>



<p>Another possibility is that the brains of individuals with lower BMIs might show less activation in areas linked to reward processing when presented with tempting, unhealthy options. Basically, these options might not trigger the same intense pleasure response in the brain, making it easier to resist them. </p>



<p>For example, for someone with a lower BMI, the brain's reward system might not light up as intensely when presented with a dessert compared to someone with a higher BMI. This dampened pleasure response could translate to a weaker craving and less difficulty in resisting the unhealthy option.  </p>



<h3 class="wp-block-heading" id="h-higher-bmi">Higher BMI</h3>



<p>The study suggests that people with a <a href="https://www.earth.com/news/excess-weight-in-middle-age-shortens-life-expectancy-by-years/" target="_blank" rel="noreferrer noopener">higher BMI</a> exhibited a more significant shift in brain activity during food choices. This heightened activity indicates their brains had to work considerably harder to overcome the allure of unhealthy options and prioritize healthy ones. </p>



<p>Individuals with a higher BMI might experience a surge in activity in brain regions associated with cravings and reward seeking when presented with unhealthy foods. This heightened response could be likened to a stronger signal on the brain's reward network, making it much more challenging to resist temptation. <br><br>To counteract the strong pull of unhealthy options, people with a higher BMI might need to activate areas of the brain responsible for cognitive control and decision-making to a greater degree. This increased mental effort might explain why some people find it so difficult to make healthy choices consistently. </p>



<p>Think of it like applying the brakes on a speeding car. The greater the temptation (speeding car), the harder the brain (driver) has to press the brakes (cognitive control) to resist the unhealthy option and choose the healthy one.</p>



<h2 class="wp-block-heading" id="h-cause-and-effect-mystery">Cause and effect mystery</h2>



<p>It's crucial to remember that this research is correlational, meaning it shows an association but doesn't prove that one causes the other. The researchers can't definitively say whether difficulty with healthy choices leads to <a href="https://www.earth.com/news/obese-higher-taste-satisfaction/" target="_blank" rel="noreferrer noopener">weight gain</a>, or whether weight gain changes the brain and makes healthy choices harder. More research is needed to untangle this cause-and-effect mystery.</p>



<p>The study offers a fascinating glimpse into the complex interplay between brain activity and food choices. It opens doors for future research to explore potential interventions that could help people, regardless of their BMI, make healthier choices with less internal struggle.</p>



<h2 class="wp-block-heading" id="h-brain-activity-from-being-overweight">Brain activity from being overweight</h2>



<p>The study proves several key points:</p>



<h3 class="wp-block-heading" id="h-it-s-not-just-about-willpower">It's not just about willpower</h3>



<p>For years, we've often been told that healthy eating is a simple matter of willpower. However, this study highlights that our biology plays a much larger role than previously understood. The brain's response to food cues, reward signaling, and the effort required for decision-making can significantly impact our choices.</p>



<p>This knowledge is essential because it can help remove the stigma and self-blame that often surrounds difficulty in maintaining a healthy diet. Understanding that there's a strong biological component can encourage a more compassionate approach toward oneself and others.</p>



<h3 class="wp-block-heading" id="h-biological-component">Biological component</h3>



<p>The research doesn't imply that people with high BMIs lack willpower. Rather, it suggests there may be underlying differences in brain wiring affecting how their brains process food choices. This difference makes resisting unhealthy options require significantly greater mental effort.</p>



<p>This understanding removes judgment from the equation. People struggling with their weight aren't "weak-willed" - their brains may simply be working differently. Acknowledging this biological component fosters empathy and moves the focus away from blame.</p>



<h3 class="wp-block-heading" id="h-potential-solutions-for-brain-activity-in-overweight-individuals">Potential solutions for brain activity in overweight individuals</h3>



<p>This research paves the way for developing effective and personalized strategies to help people manage their weight. Traditional approaches centered purely on willpower often fall short because they ignore this complex biological aspect.</p>



<p>By understanding how the brain influences food choices, scientists and healthcare professionals can develop interventions that address the root causes of the struggle. These interventions might include things like cognitive training, behavioral therapy, or possibly even targeted medications to support brain processes involved in healthy decision-making.</p>



<p>The study offers a beacon of hope, highlighting the potential for science to revolutionize how we approach weight management and improve dietary habits. It's a shift towards a more supportive and solution-focused outlook.</p>



<p>If you find yourself struggling with cravings, don't beat yourself up. Your brain might be working against you. Don't underestimate the power of small changes. </p>



<p>Even minor shifts in your eating habits can make a long-term difference. Seek support from healthcare professionals and explore resources for healthier eating.</p>



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Being overweight makes it hard for the brain to resist unhealthy food

Let's face it: resisting that extra slice of chocolate cake...

<p>Emperor penguins, iconic symbols of Antarctica, are facing increasing survival challenges as Antarctica's ice is melting away. A recent study by the <a href="https://www.bas.ac.uk" target="_blank" rel="noreferrer noopener">British Antarctic Survey</a> reveals worrying trends for these charismatic birds due to declining sea-ice levels.</p>



<h2 class="wp-block-heading" id="h-disappearing-sea-ice">Disappearing sea ice</h2>



<p>Emperor <a href="https://www.earth.com/news/young-emperor-penguins-need-better-protection/" target="_blank" rel="noreferrer noopener">penguins</a> rely on a specific type of sea ice called "fast ice." It's like a giant, frozen platform anchored to the Antarctic shoreline, which makes a perfect spot for the flightless birds to raise a family.</p>



<p>But this frozen haven is shrinking. Recent studies have identified a disturbing trend: sea ice levels are plummeting. This significant drop in sea ice is devastating emperor penguin breeding.</p>



<p>In 2023 alone, a fifth of known <a href="https://www.earth.com/news/emperor-penguins-face-tragic-breeding-failures-due-to-sea-ice-loss/" target="_blank" rel="noreferrer noopener">emperor</a> penguin colonies suffered breeding failures due to early sea ice breakup. This means the penguin chicks were forced to enter the icy water before their feathers were waterproof. It's a heartbreaking loss, and the second worst year on record since scientists began tracking breeding failures in 2018.</p>



<h2 class="wp-block-heading" id="h-emperor-penguins-and-melting-sea-ice">Emperor penguins and melting sea ice</h2>



<p><a href="https://www.earth.com/news/antarcticas-emperor-penguin-officially-listed-as-endangered/" target="_blank" rel="noreferrer noopener">Emperor penguins</a> are an icon of Antarctica – majestic yet surprisingly goofy with their signature waddle. Beyond their entertainment value, the penguins are an important part of their ecosystem. </p>



<p>Scientists warn that if greenhouse gas emissions continue unchecked, we could lose nearly all emperor penguins by the end of the century. That's virtual extinction for an entire species.</p>



<p>"As the continent warms we are seeing the ice break out earlier, leading to higher chick mortality. With fewer chicks surviving at many colonies, it is likely that over time a number of current breeding sites will become untenable, and the overall population will decline. This is a future that our climate models predict.” said Dr. Peter Fretwell of the British Antarctic Survey.</p>



<h2 class="wp-block-heading" id="h-how-emperor-penguins-adapt-to-sea-ice-loss">How emperor penguins adapt to sea ice loss</h2>



<p>The situation for emperor <a href="https://www.earth.com/news/young-emperor-penguins-survive/" target="_blank" rel="noreferrer noopener">penguins</a> is serious – shrinking sea ice is wreaking havoc on their breeding grounds. But there's a flicker of hope. Penguins are incredibly resilient, and they're proving it.</p>



<p>In 2022, some colonies showed remarkable adaptation to potentially devastating levels of ice loss. They took bold steps to survive. Some moved to find more stable ice, while others totally changed their game by nesting on icebergs or ice shelves instead.</p>



<p>"The fact that we are seeing these adaptations in the worst affected colonies gives us some hope that the birds can react to their changing environment and move to find more stable ice,” noted Dr. Fretwell.</p>



<h2 class="wp-block-heading" id="h-saving-sea-ice-for-emperor-penguins">Saving sea ice for emperor penguins</h2>



<p>Addressing the plight of emperor penguins requires a multifaceted approach that tackles the root cause of their challenges: climate change. To effectively combat the broad environmental shifts affecting these birds, a major global initiative to reduce greenhouse gas emissions is essential. </p>



<p>This overarching solution involves international cooperation to implement and adhere to stricter environmental policies and shift towards renewable energy sources. However, beyond the large-scale changes, there are practical steps that individuals and communities can take immediately to contribute to the solution:</p>



<h3 class="wp-block-heading">Be informed</h3>



<p>Understanding climate change and its impacts is the first step toward making meaningful change. It is vital to stay informed about the latest scientific research and policy developments related to climate change and its effects on global ecosystems, particularly Antarctica. </p>



<p>Engaging with comprehensive, scientifically accurate sources can deepen our knowledge and sensitivity to how delicate systems like those supporting the emperor penguins are managed and protected. </p>



<p>This information serves as a tool for making informed decisions and for advocating for policies that protect the environment.</p>



<h3 class="wp-block-heading">Spread the word</h3>



<p>Awareness and education are powerful catalysts for change. By sharing knowledge about the challenges faced by emperor penguins with your network, you can help raise the profile of climate issues. </p>



<p>Conversations can inspire others to learn more and act, whether it’s through social media campaigns, community talks, or simply discussions among friends and family. </p>



<p>The more people are aware of the impact of climate change on iconic species like the emperor penguin, the greater the public pressure on policymakers to act decisively in favor of sustainable practices and conservation efforts.</p>



<h3 class="wp-block-heading">Support conservation efforts</h3>



<p>Contributing to organizations that work directly on conserving Antarctica and its unique inhabitants can have an immediate impact. These organizations engage in a range of activities including direct action to protect wildlife, lobbying for policy changes, and conducting vital research that informs conservation strategies. </p>



<p>By donating, volunteering, or even engaging in advocacy campaigns organized by these groups, you can help provide them with the resources they need to carry out their important work. Look for reputable, transparent organizations with proven track records in conservation science and policy.</p>



<h3 class="wp-block-heading">Change personal habits</h3>



<p>Every individual can contribute to reducing the global carbon footprint through everyday actions. </p>



<p>Simple choices such as reducing reliance on fossil fuels by opting for public transport, biking, or walking when possible can significantly cut down one's carbon emissions. </p>



<p>Reducing energy consumption at home by using energy-efficient appliances, turning off lights when not in use, and moderating heating and cooling can also contribute to lower overall greenhouse gas emissions. </p>



<p>Furthermore, making conscious consumer choices such as supporting sustainable products and reducing waste goes a long way in promoting a more sustainable economy.</p>



<p>By combining these personal actions with broader advocacy for policy change, individuals can play a crucial role in addressing the causes of climate change. Collectively, these efforts create a groundswell of support for a healthier planet, paving the way for more stable and secure habitats for emperor penguins and other wildlife. </p>



<p>Emperor penguins are battling for survival in a rapidly changing world. Every step taken, no matter how small, moves us closer to a sustainable future and helps to mitigate the impacts of climate change on vulnerable species around the world.</p>



<p>The study is published in the journal <a href="https://www.cambridge.org/core/journals/antarctic-science/article/6-year-assessment-of-low-seaice-impacts-on-emperor-penguins/D884062FC1FFC9CFB4EB45C563FA695B" target="_blank" rel="noreferrer noopener"><em>Antarctic Science&nbsp;</em>today</a>.</p>



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



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Emperor penguins will not survive the current rate of sea ice decline

Emperor penguins, iconic symbols of Antarctica, are facing increasing survival...

Earth,Core,Structure.,Elements,Of,This,3d,Image,Furnished,By

<p>In a remarkable discovery that challenges our understanding of Earth's <a href="https://www.earth.com/news/pumping-too-much-groundwater-affects-earths-spin/" target="_blank" rel="noreferrer noopener">water distribution</a>, aided by a mineral called ringwoodite, researchers found evidence suggesting the presence of several oceans worth of water trapped deep beneath the United States. </p>



<p>The discovery, made by geophysicist Steve Jacobsen from <a href="https://www.northwestern.edu/" target="_blank" rel="noreferrer noopener">Northwestern University</a> and seismologist Brandon Schmandt from the <a href="https://www.unm.edu/" target="_blank" rel="noreferrer noopener">University of New Mexico</a>, may represent the planet's largest water reservoir. </p>



<h2 class="wp-block-heading" id="h-rethinking-earth-s-water-cycle">Rethinking Earth's water cycle</h2>



<p>Published in the journal <em>Science</em>, their findings shed light on the Earth's formation, composition, and the amount of water trapped in mantle rock.</p>



<p>"Geological processes on the Earth's surface, such as <a href="https://www.earth.com/news/earthquakes-have-long-lasting-impacts-on-forests/" target="_blank" rel="noreferrer noopener">earthquakes</a> or erupting volcanoes, are an expression of what is going on inside the Earth, out of our sight," explained Jacobsen, a co-author of the paper. </p>



<p>"I think we are finally seeing evidence for a whole-Earth <a href="https://www.earth.com/news/temperature-fluctuations-have-reshaped-earths-water-cycle/" target="_blank" rel="noreferrer noopener">water cycle</a>, which may help explain the vast amount of liquid water on the surface of our habitable planet. Scientists have been looking for this missing deep water for decades," Jacobsen continued.</p>



<h2 class="wp-block-heading" id="h-earth-s-mantle-has-remarkable-secrets">Earth's mantle has remarkable secrets</h2>



<p>Scientists have long speculated about the existence of water trapped in the <a href="https://www.earth.com/news/earths-mantle-may-contain-a-wealth-of-green-metals/" target="_blank" rel="noreferrer noopener">Earth's mantle</a>, located between the lower and upper mantle at depths of 250 to 410 miles. </p>



<p>Jacobsen and Schmandt are the first to provide direct evidence of water in this "transition zone" on a regional scale, extending across most of the interior of the United States.</p>



<p>"Melting of rock at this depth is remarkable because most melting in the mantle occurs much shallower, in the upper 50 miles," said Schmandt, a co-author of the paper. </p>



<p>"If there is a substantial amount of H2O in the transition zone, then some melting should take place in areas where there is flow into the lower mantle, and that is consistent with what we found."</p>



<h2 class="wp-block-heading" id="h-liquid-ice-vapor-and-a-fourth-form-of-water">Liquid, ice, vapor and a fourth form of water</h2>



<p>The water discovered in the mantle is not in a form familiar to us – it is not liquid, ice, or vapor. Instead, it is trapped inside the molecular structure of the minerals in the mantle rock. </p>



<p>The immense pressure created by 250 miles of solid rock, along with temperatures above 2,000 degrees Fahrenheit, causes water molecules to split and form hydroxyl radicals (OH) that can be bound into a mineral's crystal structure.</p>



<p>"Whether or not this unique sample is representative of the Earth's <a href="https://www.earth.com/news/theia-ancient-planet-buried-inside-of-earth-may-be-the-origin-of-our-moon/" target="_blank" rel="noreferrer noopener">interior composition</a> is not known, however," Jacobsen said. "Now we have found evidence for extensive melting beneath North America at the same depths corresponding to the dehydration of ringwoodite, which is exactly what has been happening in my experiments."</p>



<h2 class="wp-block-heading" id="h-following-the-ringwoodite">Following the ringwoodite</h2>



<p>Ringwoodite, a high-pressure mineral with a captivating blue hue, was named after the Australian geologist Alfred Ringwood, forms deep within the Earth's mantle at depths between 410 and 660 kilometers (250-410 miles). What makes ringwoodite truly remarkable is its ability to store water within its crystal structure.</p>



<h3 class="wp-block-heading" id="h-synthesizing-ringwoodite-in-the-lab">Synthesizing ringwoodite in the lab</h3>



<p>Jacobsen has been synthesizing ringwoodite, a sapphire-like blue mineral, in his Northwestern lab by reacting the green mineral olivine with water at high-pressure conditions. He found that more than one percent of the weight of ringwoodite's crystal structure can consist of water.</p>



<p>Under the immense pressures and temperatures found in the mantle's transition zone, water molecules split into hydroxyl radicals (OH), which can then be incorporated into ringwoodite's structure. This mineral acts like a sponge, soaking up water and storing it in the <a href="https://www.earth.com/news/discovery-ancient-ocean-floor-surrounds-the-earths-core/" target="_blank" rel="noreferrer noopener">deep Earth</a>.</p>



<p>"The ringwoodite is like a sponge, soaking up water," Jacobsen said. "There is something very special about the crystal structure of ringwoodite that allows it to attract hydrogen and trap water. This mineral can contain a lot of water under conditions of the deep mantle."</p>



<h3 class="wp-block-heading" id="h-ringwoodite-implications-for-earth-s-formation-and-habitability">Ringwoodite implications for Earth's formation and habitability</h3>



<p>The presence of water-rich ringwoodite in the Earth's mantle has implications for our understanding of the planet's formation and its potential for habitability.</p>



<p>As scientists continue to study this intriguing mineral, they may uncover new insights into the role of water in the Earth's deep interior and its influence on the geologic processes that shape our world.</p>



<p>Ringwoodite's ability to store and transport water within the <a href="https://www.earth.com/news/earths-ancient-breath-study-links-atmospheric-oxygen-and-mantle-chemistry/" target="_blank" rel="noreferrer noopener">mantle</a> could also have implications for the search for life on other planets, as the presence of water is considered a key factor in the development and sustainability of life as we know it.</p>



<h2 class="wp-block-heading" id="h-detecting-magma-beneath-north-america">Detecting magma beneath North America</h2>



<p>Using seismic waves, Schmandt detected the presence of magma beneath North America, which aligned with Jacobsen's findings of partial melt when subjecting synthesized ringwoodite to conditions around 400 miles below the Earth's surface.</p>



<p>Additionally, seismic studies have detected regions of partial melting in the mantle's transition zone, which could be attributed to the release of water from ringwoodite as it transforms into other minerals at greater depths.</p>



<p>"Seismic data from the USArray are giving us a clearer picture than ever before of the <a href="https://www.earth.com/news/earths-interior-is-cooling-faster-than-previously-thought/" target="_blank" rel="noreferrer noopener">Earth's internal structure</a> beneath North America," Schmandt explained. "The melting we see appears to be driven by subduction -- the downwelling of mantle material from the surface."</p>



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



<p>The melting detected by the researchers is called dehydration melting. When ringwoodite in the transition zone moves deeper into the lower mantle, it forms a higher-pressure mineral called silicate <a href="https://www.earth.com/news/perovskite-crystals-appear-to-dance-when-they-get-excited/" target="_blank" rel="noreferrer noopener">perovskite</a>, which cannot absorb water. This causes the rock at the boundary between the transition zone and lower mantle to partially melt.</p>



<p>"When a rock with a lot of H2O moves from the transition zone to the lower mantle it needs to get rid of the H2O somehow, so it melts a little bit," Schmandt said. "This is called dehydration melting."</p>



<p>"Once the water is released, much of it may become trapped there in the transition zone," Jacobsen added.</p>



<h2 class="wp-block-heading" id="h-how-ringwoodite-was-accidentally-discovered">How ringwoodite was accidentally discovered</h2>



<p>The international team of scientists responsible for this remarkable find was led by Graham Pearson, Canada Excellence Research Chair in Arctic Resources at the <a href="https://www.ualberta.ca/index.html" target="_blank" rel="noreferrer noopener">University of Alberta</a>. </p>



<p>Analysis of the mineral sample revealed that it contains a significant amount of water -- 1.5 per cent of its weight -- a finding that proved to have far-reaching implications for our understanding of the Earth's interior and its dynamic nature.</p>



<h3 class="wp-block-heading">Elusive ringwoodite</h3>



<p>Ringwoodite, a form of the mineral peridot, is believed to exist in large quantities under high pressures in the transition zone between the Earth's upper and lower mantle. </p>



<p>While ringwoodite has been found in meteorites, no terrestrial sample had ever been discovered before Graham Pearson came along. Due to the extreme depths at which it is formed, this elusive mineral is inaccessible for direct fieldwork.</p>



<h3 class="wp-block-heading" id="h-contribution-of-artisan-miners-in-brazil">Contribution of artisan miners in Brazil</h3>



<p>The ringwoodite sample was found in 2008 in the Juina area of Mato Grosso, Brazil, where artisan miners unearthed a <a href="https://www.earth.com/news/mystery-of-how-diamonds-reach-the-earths-surface-finally-solved/" target="_blank" rel="noreferrer noopener">diamond</a> from shallow river gravels. </p>



<p>The diamond, which had been brought to the Earth's surface by a deeply derived volcanic rock known as kimberlite, contained the ringwoodite inclusion.</p>



<p>Pearson's team had been searching for another mineral when they purchased the three-millimeter-wide, dirty-looking, commercially worthless brown diamond. </p>



<p>The ringwoodite itself, invisible to the naked eye and buried beneath the surface, was fortunately discovered by Pearson's graduate student, John McNeill, in 2009.</p>



<p>"It's so small, this inclusion, it's extremely difficult to find, never mind work on," Pearson said, "so it was a bit of a piece of luck, this discovery, as are many scientific discoveries."</p>



<h3 class="wp-block-heading">Confirming the Find</h3>



<p>The sample underwent years of rigorous analysis using Raman and infrared spectroscopy and X-ray diffraction before it was officially confirmed as ringwoodite. </p>



<p>The critical water measurements were performed at Pearson's Arctic Resources Geochemistry Laboratory at the University of Alberta, which forms part of the world-renowned <a href="https://www.eas.ualberta.ca/ccim/" target="_blank" rel="noreferrer noopener">Canadian Centre for Isotopic Microanalysis</a>, also home to the world's largest academic diamond research group.</p>



<h2 class="wp-block-heading">Implications for Earth's Dynamics</h2>



<p>For Pearson, one of the world's leading authorities in the study of deep Earth diamond host rocks, this discovery proved to be the most significant of his career. </p>



<p>It confirmed about 50 years of theoretical and experimental work by geophysicists, seismologists, and other scientists trying to understand the makeup of the Earth's interior.</p>



<p>"One of the reasons the Earth is such a dynamic planet is the presence of some water in its interior," Pearson said. "Water changes everything about the way a planet works."</p>



<h2 class="wp-block-heading" id="h-ringwoodite-earth-s-water-cycle-and-the-future">Ringwoodite, Earth's water cycle, and the future</h2>



<p>In summary, the crucial discovery of a vast water reservoir deep within the Earth's mantle by Steve Jacobsen and Brandon Schmandt has revolutionized our understanding of the planet's formation, composition, and water cycle.</p>



<p>As researchers continued to explore the complex processes occurring far beneath the Earth's surface, their ringwoodite findings provided a new understanding of the delicate balance that makes our planet habitable. </p>



<p>The presence of this hidden ocean, trapped within the crystals of mantle rock, serves as a testament to the incredible forces at work within the Earth and the countless mysteries that still lie beneath our feet. </p>



<p>With each new revelation, we move closer to unraveling the secrets of our planet's past, present, and future, and to appreciating the remarkable world we call home.</p>



<p>The full study was published in the journal <em><a href="http://www.sciencemag.org/" target="_blank" rel="noreferrer noopener">Science</a> </em>and the journal<em> <a href="http://www.nature.com/nature/journal/v507/n7491/full/nature13080.html" target="_blank" rel="noreferrer noopener">Nature</a></em></p>



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



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Earth has a vast interior ocean, 400-miles under our feet, that creates 'ringwoodite' gems

In a remarkable discovery that challenges our understanding of Earth's...

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



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



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



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



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



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

Nushagak Bay in southwest Alaska

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

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



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



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



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



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



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



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

Flu viruses are more flexible than expected

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



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



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



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



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



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



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

Lake Trasimeno in Central Italy

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



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



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



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



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



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



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

Detecting mercury contamination with the tap of a finger

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



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



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



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



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



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



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



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



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



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

Kainji Lake in north central Nigeria

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



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



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



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



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



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



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



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



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



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



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

Designing crops that can beat the heat

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

<p>The vet held onto the cat for another couple of days and then he was good to go. Nathan got a crate and the vet packed in the adorable cat with a sweet goodbye.</p>
<p>Before he knew it, Nathan was driving home with “Sinbad” nestled in his new, shiny crate. He couldn’t quite believe the way this little cutie arrived into his life. Photo Credit: Beverly Hills Veterinary Associates</p>


Driving Home