A recent study has unveiled a concerning trend in the traditionally damp landscapes of Africa. Over an 18-year span, the number of <a href="https://www.earth.com/news/twenty-years-of-air-quality-improvement-erased-by-wildfires/" target="_blank" rel="noreferrer noopener">wildfires</a> has alarmingly doubled in Africa's wet forests, especially in the vast Congo Basin. 



The uptick in fire activity in these regions mirrors similar increases observed in other wet forests globally, including the U.S. Pacific Northwest and the Amazon. 



This pattern indicates a shift in the ecological dynamics of these areas, underscoring the urgent need to reevaluate the susceptibility of wet forests to fires.



<h2 class="wp-block-heading" id="h-fire-trends-in-africa-s-wet-forests">Fire trends in Africa’s wet forests</h2>



The study represents the first extensive examination of fire incidents in West and Central Africa’s lush, tropical forests. 



Utilizing satellite imagery, the researchers tracked active <a href="https://www.earth.com/news/historic-fires-impact-planet/" target="_blank" rel="noreferrer noopener">fires</a> from 2003 to 2021, discovering a clear rise in fire frequency, particularly in the Northwest Congolian Lowland Forests. By 2021, the number of fires per 10,000 square kilometers surged by 400 annually.



"There were several areas with strong trends of increasing fire, mainly in the Congo Basin. In contrast, there were almost no locations where fire was decreasing," wrote the researchers.



<h2 class="wp-block-heading" id="h-impact-of-human-activity-on-wet-forest-fires">Impact of human activity on wet forest fires</h2>



Traditionally, fires in Africa's wet forests were thought to be minor, especially when compared to those in drier woodlands and savannas. The lack of comprehensive research left many questions about the characteristics and drivers of these fires unanswered.



The escalation of fires in wet forests is deeply connected to human activities, such as <a href="https://www.earth.com/news/global-deforestation-crisis-how-can-we-stop-massive-forest-losses/" target="_blank" rel="noreferrer noopener">deforestation</a>. This not only reduces forest cover but also fragments the remaining forested areas, increasing their susceptibility to fires. 



Consequently, these human-driven changes foster drier conditions particularly at the forest edges, where the majority of fires tend to ignite. 



<h2 class="wp-block-heading" id="h-weather-patterns-and-wet-forest-fires">Weather patterns and wet forest fires</h2>



Furthermore, the experts identified a pronounced correlation between the occurrence of fires in these wet forests and weather patterns, particularly high temperatures and vapor pressure deficits, which are indicative of elevated plant water stress levels.



A particularly compelling discovery was the impact of the 2015-2016 "super El Niño" event, which intensified heat and drought conditions in these regions, subsequently leading to a noticeable increase in fires. 



"I was surprised at how strong and clear the climate signal was," said Michael Wimberly, an ecologist at the University of Oklahoma who led the study.



<h2 class="wp-block-heading" id="h-implications-for-future-forest-management">Implications for future forest management</h2>



The implications of these findings are profound. As global climate patterns continue to evolve, <a href="https://www.earth.com/news/tropical-forest-land-sometimes-gets-cleared-for-nothing/" target="_blank" rel="noreferrer noopener">tropical forest</a> fires are likely to increase in frequency and intensity, posing significant challenges to conservation efforts and biodiversity. 



Wimberly emphasized the necessity of rethinking how we view the relationship between climate change and fire in tropical forests. "Tropical forest fires have been long overlooked, but they're only going to become more important in the future. We can't ignore them any longer."



This pivotal study calls for an integrated approach to managing fire risks, particularly by controlling fires at the edges of <a href="https://www.earth.com/news/one-third-of-global-forest-loss-has-been-caused-by-wildfires/" target="_blank" rel="noreferrer noopener">forests</a> to prevent the destructive feedback loops that increase vulnerability to further fires. 



<h2 class="wp-block-heading" id="h-broader-implications-of-the-study">Broader implications of the study</h2>



The research underscores the need for enhanced monitoring and intervention strategies that can mitigate the impact of fires on some of the world’s most critical wet forest ecosystems.



The findings from the study not only expand our understanding of the ecological dynamics of wet forests but also serve as a call to action for policymakers, researchers, and conservationists worldwide to address the emerging threats posed by climate change and human influence on these vital habitats.



“Fires are likely to continue increasing as temperatures become hotter and human populations grow and expand, and they will have negative impacts on carbon storage as well as biodiversity and human livelihoods derived from forest resources,” wrote the study authors.



“To date there has been limited research on fire in African forests, and more work is needed to understand how ENSO and other climate modes influence regional patterns of fire risk; assess the impacts of increasing fire on carbon dynamics, biodiversity, and forest resources; and develop more effective strategies for predicting fire danger and preventing destructive wildfires.”



The study is published in the journal <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL106240" target="_blank" rel="noreferrer noopener">Geophysical Research Letters</a>.



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Africa's wet forests have seen an alarming rise in wildfires

A recent study has unveiled a concerning trend in the traditionally damp landscapes of Africa. Over an 18-year span, the number of wildfires has alarmingly doubled in Africa's wet forests, especially in the vast Congo Basin. The uptick in fire activity in these regions mirrors similar increases observed in other wet forests globally, including the U.S. Pacific Northwest and the Amazon. This pattern indicates a shift in the ecological dynamics of these areas, underscoring the urgent need to reevaluate the susceptibility of wet forests to fires. Fire...

A new computer modeling study led by the <a href="https://scripps.ucsd.edu/">Scripps Institution of Oceanography</a> at the University of California, San Diego has found that <a href="https://www.earth.com/news/earths-atmosphere-is-expanding-due-to-climate-change/">climate change</a> is altering the mechanics of surface ocean circulations, making the currents become thinner and faster. Such changes can have a major impact, affecting the transport of nutrients that marine organisms need, as well as the microorganisms themselves. In addition, swifter currents could also influence the processes by which the oceans remove heat and carbon dioxide from the atmosphere and protect our planet from excessive warming.



“We were surprised to see that surface currents speed up in more than three-fourths of the world’s oceans when we heated the ocean surface,” said study lead author Qihua Peng, a postdoctoral researcher in Physical Oceanography at the Scripps Institution.&nbsp;&nbsp;&nbsp;



Although previous studies have identified wind as the main factor predicting the speed of ocean currents, these new findings reveal that increases in sea surface temperatures also play a crucial role in this process. 



According to Dr. Peng and his colleagues, warming makes the topmost layers of water become lighter. This rise in density difference between the warm surface layers and the colder water beneath limits the swift surface ocean currents to a thinner layer, causing them to speed up in over three-fourths of the world’s oceans. This increased speed of rotating currents (known as gyres) was associated with a slowdown of current circulation underneath.



The dynamics of the Antarctic Circumpolar Current (the largest in the world in terms of volume transport) provide clear evidence for this hypothesis. As shown by a 2021 study published in the journal <a href="https://www.nature.com/articles/s41558-021-01212-5">Nature Climate Change</a>, this current is speeding up. “The accelerating Antarctic Circumpolar Current is exactly what our model predicts as climate warms,” said Shang-Ping Xie, a climate modeler at Scripps and co-author of the present study.



Since these trends are directly correlated with the ever-increasing levels of greenhouse gases in the atmosphere, urgent measures are needed to mitigate emissions in order to protect the various marine ecosystems that are threatened by changes in currents circulation.&nbsp;



The study is published in the journal <a href="https://www.science.org/doi/full/10.1126/sciadv.abj8394">Science Advances</a>.&nbsp;



---



By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Rising surface temperatures are speeding up ocean currents

A new computer modeling study led by the Scripps Institution...

A new study from the <a href="https://www.unl.edu/">University of Nebraska-Lincoln</a> has found the U-shaped relationship between diet and size in modern land <a href="https://www.earth.com/news/ancient-mammals-bulked-up-to-deal-with-drastic-changes/">mammals</a> spans at least 66 million years across a range of vertebrate animal groups and ecosystems.



Decades ago, ecologists realized that graphing the diet-size relationship of terrestrial mammals on a plant-to-protein gradient yields a U-shaped curve. For example, the plant-eating herbivores on the far left of the U-curve and meat-eating carnivores on the far right grow larger in size than those of the all-consuming omnivores and the invertebrate-feasting invertivores in the middle.



However, key features of past and present ecosystems are being disrupted by human-caused extinctions of the largest herbivores and carnivores. The study reveals that this comes with unpredictable consequences.



“We’re not sure what’s going to happen, because this hasn’t happened before,” said study co-author Will Gearty. “But because the systems have been in what seems to be a very steady state for a very long time, it’s concerning what might happen when they leave that state.”



The evolutionary history of a species can be told through the influences of diet and size. This is because diet influences energy consumption, which drives growth and development. Size can also limit the food available to a species, “you can be as big as your food will allow you to be,” Gearty said. “At the same time, you’re often as big as you need to be to catch and process your food. So there’s an evolutionary interplay there.”



The plant-based diet of herbivores is relatively poor in nutrition, they often grow large to cover more ground to forage more food. Herbivores often have long, complex digestive tracts to extract maximum nutrients from what they eat. Carnivores, on the other hand, must grow large to take down those herbivores. For omnivores, their selection of food is vast, their high energy demands require a diet of nuts, insects and other small, energy-dense foods. Lastly, invertivores enjoy mostly protein-rich prey, but are in stiff competition with many other invertivores, leading these species to be the smallest of all.



The U-shaped pattern was also found in land mammals, birds and salt water fish in biomes like forests, grasslands, deserts, or the tropical Atlantic Ocean and even the North Pacific.



“Showing that this exists across all these different groups does suggest that it is something fundamental about how vertebrates acquire energy, how they interact with one another, and how they coexist,” said co-author Kate Lyons.



The researchers were also interested in how long the U-curve may have endured. Fossil records from 5,427 mammal species were analyzed. Some dating back as far back as the Early Cretaceous Period of 145 to 100 million years ago. By doing so, the team conducted the most extensive study of the evolution of body, size and diet in mammals over time.



This revealed that the U-curve stretches back at least 66 million years, after the dinosaur extinction. “We suspect that it’s actually existed since the inception of mammals as a group.” said Gearty.



Next, the team wanted to understand the U-shape presence in the future. They found that the median sizes of herbivores and omnivores have decreased 100 times since the emergence of Neanderthals and Homo sapiens over the past few hundred thousand years. The size of carnivores has also dropped by 10 times in that same span. The U-curve that has persisted for 66 millions of years has begun to flatten.&nbsp;



This led to the team projecting a 50 percent chance that large and medium mammals such as the tiger and rhinoceros will go extinct within the next 200 years. These mammals all have one thing in common - their only predators are human.&nbsp;



The predicted extinctions would further exacerbate the disruption of the U-curve - the loss of large herbivores could trigger or accelerate the loss of the large carnivores that prey on them.



“That could perhaps have fundamental repercussions for the environment and ecosystem as a whole.” said Gearty.



“You keep seeing, in ecological literature, people speculating about how ecosystems are less stable now, and less resilient, and more prone to collapse,” said Lyons. “I think this is just another line of evidence suggesting that that may indeed be the case in the future.”



The research is published in the journal <a href="https://www.nature.com/natecolevol/">Nature Ecology &amp; Evolution</a>.



---



By <a href="mailto:katherinebucko@gmail.com">Katherine Bucko</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Humans have disrupted 66 million years of ecosystem stability

A new study from the University of Nebraska-Lincoln has found...

The effects of climate change and agriculture are severely impacting insects all over the world. A new report from <a href="https://www.ucl.ac.uk/">University College London</a> has revealed that the combination of these stressors has reduced insect populations by up to 49 percent.



The study is the first to confirm that rising temperatures and land use changes are responsible for widespread insect losses.



“Many insects appear to be very vulnerable to human pressures, which is concerning as climate change worsens and agricultural areas continue to expand," said study lead author Dr. Charlie Outhwaite.



"Our findings highlight the urgency of actions to preserve natural habitats, slow the expansion of high-intensity agriculture, and cut emissions to mitigate climate change.&nbsp;



“Losing insect populations could be harmful not only to the natural environment, where insects often play key roles in local ecosystems, but it could also harm human health and food security, particularly with losses of pollinators.



“Our findings may only represent the tip of the iceberg as there is limited evidence in some areas, particularly in the tropics which we found have quite high reductions in insect biodiversity in the most impacted areas.”



For the investigation, the researchers analyzed 750,000 records of insect abundance for nearly 20,000 species. The experts considered how species richness may have been affected by agriculture and climate warming in various regions. 



The analysis showed that in areas with the most intensive agriculture and climate warming, insect abundance was 49 percent lower compared to habitats that were less impacted.&nbsp;



The researchers noted that insect declines due to human influences may be even greater than their findings suggest, as many areas with long histories of human impacts would have already seen biodiversity losses before the start of the study period.



“The environmental harms of high-intensity agriculture present a tricky challenge as we try to keep up with food demands of a growing population," said study senior author Dr. Tim Newbold.



"We have previously found that insect pollinators are particularly vulnerable to agricultural expansion, as they appear to be more than 70% less abundant in high-intensity croplands compared to wild sites."



According to Dr. Newbold, the careful management of agricultural areas - such as preserving natural habitats near farmland - is needed to help protect insects.&nbsp;



“We need to acknowledge how important insects are for the environment as a whole, and for human health and wellbeing, in order to address the threats we pose to them before many species are lost forever," said study co-author Peter McCann.



The study is published in the journal <a href="https://www.nature.com/">Nature</a>.



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

Farming and climate warming have cut insect populations in half

The effects of climate change and agriculture are severely impacting...

This month, the UN Biodiversity Conference will convene governments from around the world to agree to a new set of goals to protect biological <a href="https://www.earth.com/news/maps-of-bird-populations-can-help-protect-biodiversity/">diversity</a> globally. Leaders will potentially set formal goals to protect 30 percent of the Earth’s surface by 2030, and will draw up a framework to transform society’s relationship with biodiversity.&nbsp;



However, a new study led by the <a href="https://www.exeter.ac.uk/">University of Exeter</a> has found that simply protecting areas for the use of wildlife alone does not guarantee benefits to the populations of plants and animals. Instead, protected areas such as nature reserves and parks need to be managed specifically to preserve biodiversity. The researchers argue that targets need to be set for the quality of protected areas, not just the quantity.



“We know that protected areas can prevent habitat loss, especially in terms of stopping deforestation,” said study lead author&nbsp;<a href="https://biosciences.exeter.ac.uk/staff/profile/index.php?web_id=Hannah_Wauchope">Dr. Hannah Wauchope</a>.&nbsp;“However, we have much less understanding of how protected areas help wildlife.”



The study focused on waterbird populations in 2,500 protected areas throughout 68 different countries. Waterbirds are well studied and data about their populations has been collected over decades by researchers and citizen scientists. Waterbirds are highly mobile and can move rapidly between areas in response to their suitability and the quality of the conditions.



More than 27,000 waterbird populations were investigated using a method that compared numbers of individuals before and after the establishment of protected areas. In addition, the researchers compared population trends of similar waterbird populations inside and outside currently protected areas.&nbsp;



“Our study shows that, while many protected areas are working well, many others are failing to have a positive effect,” said Dr. Wauchope. “Rather than focussing solely on the total global area protected, we need more focus on ensuring areas are well-managed to benefit biodiversity.”



“We are not saying protected areas don't work,” added Dr. Wauchope. “The key point is that their impacts vary hugely, and the biggest thing this depends on is whether they are managed with species in mind – we can’t just expect protected areas to work without appropriate management. It also appears that larger protected areas tend to be better than smaller ones."



The findings, published today in the prestigious journal <a href="https://www.nature.com/">Nature</a>, show that protected areas, such as national parks, have a “mixed impact” on wildlife, depending on whether or not they are managed specifically to encourage and preserve biodiversity. This study, which is the largest ever global assessment of the effects of protected areas on biodiversity, provides a much more accurate and detailed picture of the benefits of protected areas than previous studies.&nbsp;



The research team included scientists from Wetlands International and the Universities of Cambridge, Bangor, Queensland, Copenhagen, and Cornell, and the research relied on the efforts of many thousands of volunteers across the world to collect the data on waterbird population numbers. Data on waterbirds in North America came from the National Audubon Society, and the collection of data by volunteers was organized by the <a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.audubon.org%2Fconservation%2Fscience%2Fchristmas-bird-count&amp;data=04%7C01%7CL.Vennells%40exeter.ac.uk%7C445abed8f94b4ba6da2408da1bb71d32%7C912a5d77fb984eeeaf321334d8f04a53%7C0%7C0%7C637852770636976664%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=Tw9B1gM5entZYHa6KbqdvdeEX9AuH%2FEIGScq95om2ZI%3D&amp;reserved=0">Christmas Bird Count</a>&nbsp;(National Audubon Society) and the&nbsp;<a href="https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.wetlands.org%2FIWC&amp;data=04%7C01%7CL.Vennells%40exeter.ac.uk%7C445abed8f94b4ba6da2408da1bb71d32%7C912a5d77fb984eeeaf321334d8f04a53%7C0%7C0%7C637852770636976664%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=h0atJZ2Y7OFILak8shjJKpC%2BPtnFAjzjnyZc6YtSm0o%3D&amp;reserved=0">International Waterbird Census</a>&nbsp;(Wetlands International).



“To slow biodiversity loss, we need a much better understanding of which conservation approaches work, and which don’t," said Professor Julia Jones. "This analysis gives really useful indications of how conservation can be improved to deliver better outcomes for species.”



---



By <a href="mailto:bosman@truewan.co.za">Alison Bosman</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Protected areas must be managed to benefit biodiversity

This month, the UN Biodiversity Conference will convene governments from...

On Tuesday, April 19, 2022, the White House announced that it has restored key protections to an important environmental law governing the construction of pipelines, roads, and other infrastructure that Donald Trump had swept away during his presidency. These new rules will require federal agencies to thoroughly assess the <a href="https://www.earth.com/news/climate-change-could-make-earth-inhospitable-by-2500/">climate</a> impacts of major infrastructure projects – such as the construction of highways, bridges, plants, or oil and gas pipelines – according to the <a href="https://www.epa.gov/nepa/what-national-environmental-policy-act">National Environmental Policy Act</a> (NEPA), a 1970 law aiming to mitigate the impact of human activities on the natural environment.



The Trump-era changes to the implementation of this law - such as the exemption of many projects from review in order to speed up the approval process, or the sidestepping of co-called “indirect” climate impacts during project assessment - made it more difficult for environmental agencies and community activists to challenge federal infrastructure projects that could negatively impact the environment and increase global warming.



Under the <a href="https://www.federalregister.gov/documents/2022/04/20/2022-08288/national-environmental-policy-act-implementing-regulations-revisions">new regulations</a> approved by President Biden this week, infrastructure projects will need to account for how their actions may increase greenhouse gas emissions, fragment wildlife habitat, or impose new burdens on communities that have already faced disproportionate amounts of pollution, such as those from poor or minority neighborhoods. Moreover, agencies and businesses will need to take into consideration not only “direct,” but also “indirect” and “cumulative” climate impacts of their actions.



“I’m glad this administration recognizes how egregiously wrong those actions were and is moving forward to restore the protections that have helped protect our environment while promoting sustainable development for decades,” said Raúl M. Grijalva, the chair of the <a href="https://naturalresources.house.gov/">House Committee on National Resources</a>.



Although Biden Administration’s new regulations are seen as a positive development by many individuals and organizations, several business groups are more critical, arguing that these changes are likely to raise costs and slow construction.



“It should never take longer to get federal approval for an infrastructure project than it takes to build the project, but that very well may be the result of the administration’s changes,” said Marty Durbin, senior vice president of policy at the <a href="https://www.uschamber.com/">U.S. Chamber of Commerce</a>. In his view, with supply chain disruptions, “the last thing our country needs is unnecessarily extensive and duplicative bureaucratic red tape.”



Nevertheless, White House officials remained adamant in their decision to reverse the Trump-era regulations, and insisted that concerns about delays are misplaced. “Patching these holes in the environmental review process will help projects get built faster, be more resilient, and provide greater benefits — to people who live nearby,” concluded Brenda Mallory, chair of the White House’s <a href="https://www.whitehouse.gov/ceq/">Council on Environmental Quality</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Biden administration restores a key environmental law

On Tuesday, April 19, 2022, the White House announced that...

Although an increasing body of scientific evidence is showing that time spent in nature (TSN) is associated with greater physical and <a href="https://www.earth.com/news/extreme-heat-linked-to-mental-health-issues/">mental health</a>, most American adults spend little time in green or natural environments. In order to predict people’s probability of spending more time in nature, a new study led by the <a href="https://public-health.tamu.edu/">Texas A&amp;M University School of Public Health</a> has outlined two scales created to measure factors related to TSN.



According to the scientists, two strong predictors of health behaviors are self-efficacy and intentions. “Self-efficacy” was defined as “a person’s confidence in his or her ability to take action and to persist in that action despite obstacles or challenges pertaining to spending time in nature,” and “intention”&nbsp;as “planning to engage in certain nature-related behaviors over the next three months.” After defining these terms, the researchers created a survey aiming to measure them, and administered it to a nationwide sample of over 2,000 respondents.



The survey results revealed that spending more time in nature correlates with both self-efficacy and intention, suggesting that future public health interventions to improve TSN should have increasing confidence to spend time in nature as a major goal.&nbsp;



Both self-efficacy and intention were negatively correlated with age, indicating a decrease in confidence in older adults, which could be related to mobility or safety concerns that generally increase with age. Male participants shown higher self-efficacy than female respondents, a finding that was confirmed by previous research showing that women are less likely to participate in recreational activities in natural environments.



The development of these scales is a first step in what the scientists hope will be a series of studies aiming to find ways of improving physical and mental health through increased TSN. “We’re working on developing a whole suite of measures,” said study lead author Jay Maddock, an expert in social-ecological approaches to increase physical activity at Texas A&amp;M. “Once those are done, we’re going to be looking to develop theory-based interventions to increase time spent in nature.”



The study is published in the journal <a href="http://dx.doi.org/10.1186/s40359-022-00764-1">BMC Psychology</a>.



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Spending time in nature improves physical and mental health

Although an increasing body of scientific evidence is showing that...

Each year on April 22, <a href="https://www.earth.com/news/april-22-earth-day/">Earth Day</a> marks the anniversary of the birth of the modern environmental movement in 1970. Although this celebration and call for environmental action emerged in the United States, with the efforts of Senator Gaylord Nelson and environmental activist Denis Hayes to bring environmental awareness to the American public, in the 1990s it became a global phenomenon, mobilizing over 200 million people in 141 countries.&nbsp;



At the start of the new millennium, innovations in digital media provided a massive platform for millions of conversations across more than 180 countries. Now, Earth Day is widely recognized as the largest secular observance of the world, celebrated by over one billion people each year as a day of action to change human behaviors that negatively impact our planet and to create global, national, and local policy changes.



The theme of this year’s Earth Day is “Invest in Our Planet.” This global event is focused on accelerating solutions to combat climate change (a phenomenon considered by many scientists and activists as our greatest current threat) by engaging over one billion people, governments, institutions, and businesses to recognize our collective responsibility towards our planet, and to help accelerating the transition to a prosperous and equitable green economy worldwide.&nbsp;&nbsp;



According to the organizers of the event, investment in our planet should involve individuals, governments, businesses, and investors. Each small action of every individual citizen could end up having a strong impact on our environment. Yet, citizens should not only ask themselves what daily steps they need to take in order to protect our planet (for instance, to separate waste or drive electric cars), but also try to hold governments and businesses accountable for their actions.&nbsp;



At the same time, local and national government officials should incentivize their citizens, businesses, and institutions to innovate, in order to create a global economic system relying on green technologies that could curb climate change and thus protect our planet. Finally, it is imperative for businesses and investors to take action too, and embrace the benefits of a green, sustainable economy.



This year, two major initiatives aiming to increase sustainability and protect our planet are the Canopy Project and the Global Cleanup Project. Initiated in 2010, the <a href="https://www.earthday.org/campaign/the-canopy-project/">Canopy Project</a> has helped improving our shared environment by planting tens of millions of trees all over the world. Working with global partners to reforest areas in dire need of rehabilitation - including regions with communities highly at-risk from climate change and environmental degradation – as well as&nbsp; conducting massive tree planting in the wake of environmental disasters, <a href="https://www.earthday.org/">EARTHDAY.ORG</a> (EDO) has already managed to offer a glimmer of hope for the inhabitants of our increasingly precarious planet. Interested individuals and organizations could help plant a new tree by <a href="https://bit.ly/3uYzED7">donating</a> as little as $1.



Another important project that will be relaunched this year is the <a href="https://www.earthday.org/press-release/earthday-org-launches-the-great-global-cleanup-for-2022/">Great Global Cleanup</a>. This initiative aims to provide opportunities for individuals and organizations to tackle local mismanaged waste in order to make positive, tangible impacts on the environment. “From harming marine and human health, to clogging our waterways and littering communities, plastic pollution is threatening the survival of our shared planet. Cleanups are just one way individuals can get involved to combat this critical issue. For Earth Day 2022, ‘Invest in Our Planet’ means taking action and participating in community measures to help solve the issue of mismanaged waste,” explained Kathleen Rogers, the president of EDO.



This worldwide campaign aims to remove billions of pieces of trash from neighborhoods, rivers, lakes, beaches, trails, and parks. in order to reduce waste and plastic pollution and to prevent harm to both wildlife and humans. Through this program, daily cleanups will play a crucial role in paving the way towards a brighter, greener, and cleaner planet.



By further increasing climate literacy and attracting more contributors from each corner of the world, this year’s Earth Day promises to be a significant step further for building a sustainable future, and making our planet a safe habitat not only for us, humans, but also for a large number of frequently imperiled ecosystems.&nbsp;



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Earth Day 2022: New investments in our planet urgently needed

Each year on April 22, Earth Day marks the anniversary...

Antarctic sea ice has reached its lowest extent since satellite records began in 1978, according to a new study from the&nbsp; <a href="http://english.iap.cas.cn/">Institute of Atmospheric Pyschics</a>. The experts report that while many of the causes have been identified, there are still mysteries that remain.



In recent decades, the Arctic has been experiencing a rapid decline in sea ice as a result of global warming. Antarctic sea ice, on the other hand, has been showing an overall increase during the same time period.



In 2017, the southern hemisphere reached a record minimum extent of sea ice. Now, five years later, the same downward trend has been found in <a href="https://www.earth.com/news/invasive-species-are-arriving-with-ships-in-antarctica/">Antarctica</a>.



A new record minimum in Antarctic sea ice extent was set on February 25, 2022, marking the first time in more than four decades that it has hit under two million square kilometers. Throughout the region, sea ice extent was about 30 percent lower than the average extent documented during the three decades of 1981 to 2010.



To investigate the causes of this phenomenon, the experts analyzed sea ice records from 1979 to 2022 from the National Snow and Ice Data Center (NSIDC).



The study revealed that in the summertime, ice loss is predominantly driven by thermodynamics, or the transfer of heat across Earth's oceans. The experts also identified an increase in overall infrared radiation and visible light.



“Sea ice is whiter than the dark unfrozen sea, thus there is less reflection of heat and more absorption,” said study co-author and climatologist Qinghua Yang. “which in turn melts more sea ice, producing more absorption of heat, in a vicious cycle.”



In the spring, both thermodynamics and other dynamics contribute to the status of sea ice extent, the researchers found. They noted that according to data from the US National Oceanographic and Atmospheric Administration (NOAA), the new record Antarctic sea-ice extent minimum occurred at the same time as a combination of La Niña and a positive Southern Annular Mode (SAM).&nbsp;



Despite the breakthrough findings, there are questions to be answered.



“If tropical variability is having such an impact, it’s that location that needs to be studied next,” said study co-author Jinfei Wang.



The study is published in the journal <a href="https://www.springer.com/journal/376">Advances in Atmospheric Sciences</a>.



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

Antarctic sea ice extent has reached a record low

Antarctic sea ice has reached its lowest extent since satellite...

Macro,Close,Up,Of,Fresh,Steamed,Blue,Sea,Mussels.

New research from <a href="https://www.flinders.edu.au/">Flinders University</a> has found further evidence of microplastics in our <a href="https://www.earth.com/news/marine-food-chains-threatened-by-ocean-acidification/">food chain</a>.&nbsp;In southern Australia’s most popular and remote beaches, microplastics were found in blue mussels and the surrounding water. 



The research team considers this a warning that our food chains are now polluted with plastic waste. From wild-caught fish and ocean-farmed seafood, microplastics are polluting the Southern Ocean and gulf waters of South Australia.



The world’s oceans are littered with plastic waste that breaks down into smaller fragments, known as microplastics. The highest concentration of microplastics have been reported in the shallow sea floor in the Maldives and lowest reported in the surface waters of the Antarctic Southern Ocean.



To measure concentrations of microplastics, the researchers analyzed samples from 10 beaches in South Australia's coastline. These areas are important for shipping, fishing and tourism, along with other industries and local communities.



The results showed that microplastic concentrations in the intertidal water are low to moderate compared to global levels. Microplastic concentrations in mussels are also within the range reported globally.&nbsp;



Blue mussels were studied because they are directly affected by ecosystem conditions. This allowed the research team to investigate the types of pollution that are affecting the local environment, “and single use plastics was the main offender” said study senior author Professor Burke da Silva.



Microplastics are usually abundant in mussel samples near large towns and cities. The experts found that concentration levels were four times higher at Semaphore Beach compared to the more remote beaches.



“By investigating microplastic load in the mussel, we call attention to the implications of microplastic pollution on South Australia’s unique marine ecosystems and on the local human food chain,” said study first author Janet Klein.



The types of plastics found in these beaches were synthetic, suggesting they came from single-use, short-life cycle products, fabrics, ropes and cordage from the fishing industry.&nbsp;



“The areas examined include some biodiversity hotspots of global significance – including the breeding ground of the Great Cuttlefish in the Northern Spencer Gulf and marine ecosystems more diverse than the Great Barrier Reef (such as Coffin Bay), so cleanup and prevention measures are long overdue,” said Professor da Silva.&nbsp;&nbsp;



“Apart from the harvesting of blue mussels, we also need to consider the impact of microplastic particles entering other parts of the human food chain with microplastic pollution expected to increase in the future.”



The findings demonstrate the urgent need to prevent plastic pollution. The research team concludes that this can only be done by working with the industries that produce these products, local communities, and government to best protect our ocean ecosystems.



The study is published in the journal <a href="https://www.journals.elsevier.com/science-of-the-total-environment">Science of The Total Environment</a>.



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By <a href="mailto:katherinebucko@gmail.com">Katherine Bucko</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Study confirms: microplastics have entered our food chain

New research from Flinders University has found further evidence of...

The conch, one of the world’s largest invertebrates, is traditionally battered and fried in the <a href="https://www.earth.com/news/caribbean-corals-have-been-warming-for-at-least-a-century/">Caribbean</a>. The animal’s shell is famously used as a horn for long distance communications in Polynesia. Since 1969, the horse conch has been an official symbol of Florida and has been used to promote tourism in the sunshine state. But now, the animal inhabiting the shell is slipping toward extinction.



Unregulated harvest of the gastropod has led to a drop in population, and this decline turns out to be greater than scientists realized. Previously, it was believed that conchs could live for up to 50 years. A new study led by researchers at the <a href="https://www.usf.edu/">University of South Florida</a> tells a different tale.&nbsp;&nbsp;&nbsp;



The new research shows that the horse conch lives for only an average of 8 to 10 years, reaching reproductive maturity at 6 and giving birth to 28,000 offspring annually. A record breaking two-foot-long conch shell in Bailey-Matthews National Shell Museum was found to be only 16 years old. Even with the large amount of offspring, the study shows that fewer conchs are replaced each year than are harvested.&nbsp;



"Our research shows that horse conch reproduction is less likely to keep pace with intense harvest than previously thought," said study lead author Greg Herbert, an associate professor in the USF School of Geosciences.&nbsp;



"Horse conch populations are important. They create habitat for other species by leaving empty shells of dead prey around for fish, crabs and other animals to use as homes. They also contribute to the unique experience that we have in Florida of being able to go to the beach and seeing one of the largest seashells in the world at the water's edge."



The researchers estimated the age of conchs by chemically analyzing the layers in the animal’s shell. They found that males grow slower than females and mature at a smaller size. The experts also discovered that females start laying eggs at the age of six.



The researchers analyzed data from Florida Fish and Wildlife Commision (FWC) to determine population trends over time. They found a decline from a peak conch harvest of 14,511 in 1996 steadily dropping to a mere 67 in 2020.&nbsp;



"We still know very little about how many horse conchs exist and where their preferred habitats or what their optimal environmental conditions are," said study co-author Stephen Geiger, research scientist at the FWC. "Because we have no dedicated funding for more than 1,500 species of mollusks found in the waters that surround Florida, we continue to seek grants that enable us to study their biological traits, including those that will help managers decide if some species are in need of better protection."



The research is published in the journal <a href="https://journals.plos.org/plosone/">PLOS ONE</a>,



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By <a href="mailto:zachfitzner@yahoo.com">Zach Fitzner</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Florida’s horse conch is closer to extinction than expected

The conch, one of the world’s largest invertebrates, is traditionally...

A research team led by <a href="https://vt.edu/">Virginia Tech</a> has recently identified and described a new <a href="https://www.earth.com/news/ocean-acidification-reduces-the-hatching-success-of-a-keystone-fish-species/">species</a> of millipede from the Appalachian Mountains in the United States. The researchers named this species Nannaria swiftae, after famous musician Taylor Swift - an artist deeply admired by study lead author and entomologist Derek Hennen.



“Her music helped me get through the highs and lows of graduate school, so naming a new millipede species after her is my way of saying thanks,”&nbsp;explained Hennen.



Scientists have long suspected that twisted-claw millipedes include many more species than formally described until now. In order to expand our understanding of these creatures’ biodiversity, Hennen and his colleagues embarked on a multi-year project to collect new millipede specimens throughout the eastern United States. They travelled through 17 states, searching new millipedes under rocks, logs, or leaf litter.&nbsp;



By investigating over 1,800 specimens collected on their field trips or found in university and museum collections, the researchers have managed to describe 17 new species, including Nannaria marianae, which was named after Hennen’s wife. Most of these species preferred to live in forested habitats near streams, and were often found buried under the soil, thus exhibiting more cryptic behavior than many of their relatives.



Nannaria swiftae is between 18 and 38 millimeters long, has a shiny, caramel-brown to black body with white, red, or orange spots, and white legs. The males have small, twisted and flattened claws on their anterior legs (hence the common name “twisted-claw millipedes”). Together with the other species of millipedes discovered in the Appalachian Mountains, N.swiftae have a valuable role as decomposers. They feed on decaying leaves and other plant matter, and, by breaking down leaf litter, they release precious nutrients into the ecosystem.&nbsp;



According to the scientists, even more species of millipedes are expected to be discovered in the southern Appalachian Mountains in further expeditions.



A detailed description of this new species can be found in the open-source journal <a href="https://zookeys.pensoft.net/article/73485/">ZooKeys</a>.&nbsp;



Image Credit: Dr Derek Hennen



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By <a href="mailto:andrei.ionescu5891@gmail.com">Andrei Ionescu</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Millipede discovered in the Appalachian Mountains named after Taylor Swift

A research team led by Virginia Tech has recently identified...

Fires across North America have become larger and more intense as a result of increased development, poor land-use policies, and climate change. A new paper published in the journal <a href="https://www.nature.com/ncomms/">Nature Communications</a> sought to look more closely at how this change in fire intensity affects air <a href="https://www.earth.com/news/light-pollution-is-a-growing-issue-for-migratory-birds/">pollution</a>.&nbsp;



A research team led by the <a href="https://ncar.ucar.edu/">National Center for Atmospheric Research</a> (NCAR) discovered that harmful pollutants from fires in the Pacific Northwest affect places far away, like Colorado.&nbsp;



The fires in the Pacific Northwest are changing the seasonal air pollution pattern, causing a pollution spike in August.&nbsp;



“Wildfire emissions have increased so substantially that they’re changing the annual pattern of air quality across North America," said study lead author and NCAR scientist Rebecca Buchholz. "It’s quite clear that there is a new peak of air pollution in August that didn’t used (sic) to exist.”



Global inventories of wildfires and satellite-based observations of atmospheric chemistry enabled scientists to follow wildfire emissions in the Pacific Northwest, the central United States, and the Northeast from 2002 through 2018.



To measure the level of pollution, the researchers calculated carbon monoxide levels because this gas is an indicator of other air pollutants. They discovered that carbon monoxide increased in August, which is the peak burning season in the Pacific Northwest.&nbsp;



The experts also determined that the increase in carbon monoxide was not because of pollution blowing in from Asia, fires in other regions of North America, or an increase in fossil fuel emissions.&nbsp;&nbsp;



“Multiple lines of evidence point to the worsening wildfires in the Pacific Northwest as the cause of degraded air quality,” said Buchholz. “It’s particularly unfortunate that these fires are undermining the gains that society has made in reducing pollution overall.”



The increase in fires in the Pacific Northwest could impact people all over the United States. The research shows the pollutants could affect four million people in the Pacific Northwest, 23 million in the Central U.S., and 72 million in the Northeast.



Moreover, the team found that from 2012 to 2018, deaths due to respiratory illness in Colorado increased when fires in the Pacific Northwest, not Colorado, created more emissions in August.&nbsp;



“It’s clear that more research is needed into the health implications of all this smoke," concluded Buchholz. "We may already be seeing the consequences of these fires on the health of residents who live hundreds or even thousands of miles downwind.”



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By <a href="mailto:nire518@gmail.com">Erin Moody </a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Fires in the Pacific Northwest have altered air pollution patterns

Fires across North America have become larger and more intense...

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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



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



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

Designing crops that can beat the heat

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

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



Video Credit: NASA Goddard&nbsp;



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



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

Remote sensing will revolutionize the way we monitor trees

[sendtonews key="EjmSP20gQK-2593093-12187" type="single"] Today's Video of the Day from NASA...

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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&nbsp;



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



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.

Lesotho: Africa's "Kingdom in the Sky"

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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



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

Wetlands are a major source of methane emissions

[sendtonews key="f8fukm28Vz-2491833-12187" type="single"] Today's Video of the Day from NASA...

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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



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

The rapid retreat of the Columbia Glacier

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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



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

2022 illustrated the consequences of a warming climate

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Satellites reveal how Earth's systems are interconnected Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes Earth’s interconnected systems, and how this network is affected by rising temperatures.&nbsp;



During 2020, average global temperatures matched the hottest year on record. The hurricane season was also record-breaking, with many of the storms intensifying at extraordinary speeds. Hot water in the ocean is fuel for hurricanes. The satellite data shows that it's all one interconnected system showing how Satellites reveal how Earth's systems are interconnected.



According to NASA, dust swept up from Northern Africa plays a major role in the formation of hurricanes, and is also a key source of fertilization in the Amazon rainforest. As a result of<a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/"> climate</a> change, dust plumes are expected to decline, which will have an effect on vegetation far away.&nbsp;



Images from Earth-observing satellites show how the world’s plant life is affected by natural disasters, fires, and deforestation. Satellites also reveal how widespread changes in vegetation impact waterways,&nbsp; the climate, air quality. Satellites communicate by using radio waves to send signals to the antennas on the Earth. "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. 



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

[sendtonews key="JbW4VsY53O-1632195-12187" type="single"] Satellites reveal how Earth's systems are interconnected...

Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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



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

Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



Video Credit: ESA&nbsp;



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



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

Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes how Earth is unique in our solar system for its ability to sustain liquid water on its surface. But now, the water cycle is shifting as the climate warms, and scientists must find ways to predict how these changes will affect water availability.



Overall, 96 percent of Earth's water is saltwater, and nearly all of freshwater is found in ice and groundwater. These sources of water are linked as it passes through solid, liquid and gas phases.



In a warmer climate, the water cycle will be transformed. It will be easier for water to evaporate and form clouds, and storms will become more frequent and intense. Some regions will get too much water, while others will be left without enough water. In addition, soil moisture will be lost - which threatens food security.



Scientists are using satellite data from over the last 40 years to track changes that are happening in the water cycle. This will ultimately help us prepare for extreme events and better manage our water resources, according to ESA.



Video Credit: ESA



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



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Tracking changes in Earth's water cycle

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Saturn,-,High,Resolution,3d,Images,Presents,Planets,Of,The

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard Space Flight Center</a> features images of Saturn from NASA’s Hubble Space Telescope. The photographs capture the start of the mysterious "spoke season" on Saturn - when unexplained features appear on its rings. 



According to NASA, both the cause of the spokes and their seasonal variability have yet to be fully explained by planetary scientists.



"Like Earth, Saturn is tilted on its axis and therefore has four seasons, though because of Saturn's much larger orbit, each season lasts approximately seven Earth years. Equinox occurs when the rings are tilted edge-on to the Sun," explains NASA.



"The spokes disappear when it is near summer or winter solstice on Saturn. (When the Sun appears to reach either its highest or lowest latitude in the northern or southern hemisphere of a planet.) As the autumnal equinox of Saturn's northern hemisphere on May 6, 2025, draws near, the spokes are expected to become increasingly prominent and observable."



Experts believe that the spokes may be a product of the planet's variable magnetic field. When magnetic fields interact with solar wind, an electrically charged environment is created. This phenomenon is visible on Earth as the northern lights.&nbsp;



"Scientists think that the smallest, dust-sized icy ring particles can become charged as well, which temporarily levitates those particles above the rest of the larger icy particles and boulders in the rings," says NASA.



The spokes were first observed in the early 1980s by NASA's Voyager mission. Depending on the angle of the rings, the spokes can appear dark or light.



"Thanks to Hubble's OPAL program, which is building an archive of data on the outer solar system planets, we will have longer dedicated time to study Saturn’s spokes this season than ever before," said NASA senior planetary scientist Amy Simon, head of the Hubble Outer Planet Atmospheres Legacy (OPAL) program.



"Despite years of excellent observations by the Cassini mission, the precise beginning and duration of the spoke season is still unpredictable, rather like predicting the first storm during hurricane season."



Video Credit: NASA Goddard&nbsp;



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



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

Mysterious "spoke season" captured on Saturn

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Closeup,Of,Fresh,Green,The,Napier,Bush,Grass,As,Animal

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Today’s Video of the Day from <a href="http://www.ntu.edu.sg/">NTU Singapore</a> reveals that some plants can remove toxic heavy metals from soil.&nbsp;



The researchers analyzed samples of various tropical plant species to test for levels of heavy metals and metalloids. The study showed that there are existing plants with high levels of these contaminants, which means that these species are great candidates for drawing pollutants out of the soil.&nbsp;



Among the plants examined in the study, 12 species had accumulated several types of heavy metals and metalloids. These plants are widely available, including species that are native to Singapore.



“In a small nation like Singapore, land may be repurposed to support new development plans, so it is important that we have a green and sustainable way to remediate land that is contaminated," said Professor Lam Yeng Ming.



"We set out to uncover how to better make use of tropical plants to do phytoremediation and through advanced characterization techniques, we showed how some of these tropical plant species can be an environmentally friendly and literally a 'green' way to remove contaminants in soil."&nbsp;



"Phytoremediation also has benefits of cost effectiveness, simplicity of management, aesthetic advantages, and long-term applicability and sustainability. The strategy prevents erosion and metal leaching by stabilizing or accumulating heavy metals, so that helps reduce the risk of contaminant spread.”



Video Credit: NTU Singapore



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



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

Plants help remove heavy metals from contaminated soil

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes why herbicides are not as effective in killing weeds anymore. In the 20th century, chemical companies developed thousands of herbicides. The most commonly used herbicide was glyphosate, which was introduced in 1974.



Over the past few decades, dozens of species of weeds have evolved resistance to glyphosate. Depending on the site of action, the part of the plant that an herbicide interacts with, weeds may even be resistant to herbicides that have not been developed yet.&nbsp;



With increasing resistance to glyphosate and other herbicides, weeds are - once again - becoming a major concern for farmers.&nbsp;



Video Credit: American Chemical Society&nbsp;



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



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

Weeds are becoming increasingly resistant to herbicides

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Today’s Video of the Day from the <a href="https://www.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> (JPL) describes a dust storm on Mars that was nearly twice the size of the United States. As the storm covered the southern hemisphere of the planet, some of NASA’s explorers had to delay their normal activities.



NASA’s Insight lander put itself in a "safe mode" for 11 days to conserve battery power because solar power was disrupted by the dust. The Ingenuity Mars Helicopter postponed flights until conditions improved.



"A fleet of NASA orbiters monitor Martian dust storms like this one and serve as lifelines to Earth by relaying data from the rovers and lander on the ground back to the team. This includes the Mars Reconnaissance Orbiter, MAVEN, and Odyssey," reports JPL.



"Dust storms like this recent one start close to the ground and are spread by wind as they rise – warming the cold Martian atmosphere."



The images in the video were captured by NASA’s Curiosity as the dust rolled in. A fleet of orbiters monitored the dust storm from above, relaying data from Mars’ explorers back to scientists on Earth.



Video &amp; Image Credit: NASA/JPL-Caltech/ASU/MSSS



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



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NASA monitors giant dust storms on Mars

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Today's Video of the Day from the <a href="http://www.esa.int/">European Space Agency</a> features Qeshm Island in the Strait of Hormuz. This strait provides the only sea passage from the Persian Gulf to the open ocean.



Qeshm is separated from the Iranian coast by the Clarence Strait, also known as Khuran.&nbsp;The Hara Forest Protected Area is a network of shallow waterways and forest located between the island and the mainland. This protected region is home to sea turtles, snakes, and more than 150 species of migrating birds.



Qeshm is famous for its wide range of&nbsp;ecotourist&nbsp;attractions, such as the&nbsp;Hara marine forests. According to environmentalists, about 1.5 percent of the world birds and 25 percent of Iran's native <a href="https://www.earth.com/news/female-hummingbirds-avoid-sexual-harassment-by-looking-like-males/">birds</a> annually migrate to the forests, which are the first national geo park in Iran.



Tourists are also drawn to the island to see an age-old Portuguese&nbsp;fort, historic mosques, the&nbsp;Seyyed Mozaffar&nbsp;and&nbsp;Bibi Maryam&nbsp;shrines, and the "Valley of Stars."



The average temperature on the island is 81 degress and the region is often hot and humid. From June to August, the island is described as being oppressively hot. The ideal time to visit is during the winter season. 



Video Credit: ESA&nbsp;



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



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

Qeshm Island in the Strait of Hormuz

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Inhambane Bay in southeast Mozambique.&nbsp;



"Inhambane Bay is a deep inlet into which the small Mutamba River flows," says ESA. "On one side of the bay lies the historical city of Inhambane, capital of the Inhambane Province, while the sister city of Maxixe, the economic capital of Inhambane, sits across from it. The province is the second largest grower of cashews, after Nampula, and it also produces coconut and citrus fruits."



The beaches of Barra and Tofo are popular with tourists. There are also coral reefs along the long coastline of Inhambane, making it an ideal destination for scuba diving and snorkeling.



"Mozambique’s extensive coastline heightens the country’s vulnerability to tropical cyclones that develop in the Indian Ocean as well as storm surge flooding," says ESA.



"More than half of the population lives in low lying coastal areas, putting communities at risk. Inhambane Bay was dangerously close to where Cyclone Idai made landfall in 2019 causing widespread destruction to the country."



Video/ Image Credit: ESA



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



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Inhambane Bay in southeast Mozambique

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency </a>&nbsp;features the Kangerlussuaq Glacier, one of the largest tidewater outlet glaciers in Greenland. The glacier is located on the east coast of the Greenland ice sheet.



As human-induced climate change continues to drive up temperatures, global ice loss is accelerating at an alarming rate. ESA reports that, over the past decade alone, 3.5 trillion tons of ice have melted from the Greenland ice sheet. This is enough to cover the UK with meltwater 15 meters deep.



Based on satellite imagery, researchers determined that Kangerlussuaq entered a new phase of rapid retreat and acceleration in 2017. In their study, published in <a href="https://www.frontiersin.org/articles/10.3389/feart.2019.00123/full">Frontiers in Earth Science</a>,&nbsp; the experts report that the glacier's ice front is now at its most retreated position since the early 20th century.



"Given Kangerlussuaq’s previous impacts on both the magnitude and pattern of ice sheet wide mass loss, we predict that its new phase of retreat, acceleration and thinning will markedly enhance the south-east region’s contribution to increasing discharge from the ice sheet," wrote the study authors.&nbsp;&nbsp;



"More broadly, accurate forecasting of the ice sheet’s contribution to sea level rise will require a deeper understanding of, and responses to, these non-linear ice dynamic processes."



Video Credit: ESA



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



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

Kangerlussuaq Glacier on the Greenland ice sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the complex relationship between ocean and climate. ESA's Climate Change Initiative will help us understand how oceans influence the climate and how climate change is impacting the oceans.&nbsp;



"Earth’s oceans are huge heat stores, soaking up 93% of the excess heat from human activity over the past 70 years. Ocean currents redistribute heat around the planet, from the Equator to the poles. Where this ocean heat goes influences weather patterns and regional climate," explains ESA.



"As well as absorbing heat, oceans are a natural carbon sink, absorbing a quarter of carbon dioxide emissions from human activity. This has led to the acidification of ocean water, threating marine life."



The amount of heat and carbon dioxide soaked up by the ocean depends on specific variables, including phytoplankton, temperatures, waves, salinity, and ice cover. Satellites can be used to measure these variables from space.



"From their unique vantage point, satellites provide key information for understanding the complexities of our planet and monitoring environmental issues," says ESA.



Video Credit: ESA



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



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Ocean heat influences regional climate

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the importance of monitoring the shape of the sea surface, which is constantly changing. These observations have many applications, such as ship routing, <a href="https://www.earth.com/news/the-modem-ocean-is-a-tough-place-for-whales-to-survive/">ocean</a> current forecasting, and debris tracking.



"A project supported by the Discovery element of ESA’s Basic Activities recently investigated a new technique to measure sea surface topography very precisely," reports ESA.



"The technique involves looking at satellite navigation (GNSS) signals that have been reflected off of the sea surface at very low angles. At these so-called grazing angles, waves and surface roughness have very little impact on the reflection process; the sea surface acts as a very smooth mirror."



Estel Cardellach is the principal investigator at the Institute for Space Studies of Catalonia, who first submitted the idea for the project.



“In a mirror-like reflection the phase of the signal can be tracked – it is continuous," said Cardellach. "Different surface heights result in different phase measurements. It gives a very precise measurement of the surface altitude at a few centimetres’ precision.”



The researchers developed a GNSS receiver and set up an experiment in the Balaeric Islands to collect signals from the receiver that were reflected off the sea surface. Ultimately, these signals will provide improved measurements of the shape of the sea surface.



Image/ Video Credit: ESA



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

Monitoring the dynamic shape of the sea surface

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Aerial,Photo,Of,River,In,Amazon,Rainforest,Jungle,In,Peru

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Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA’s Goddard Space Flight Center</a> describes how scientists are using autonomous sound sensors to monitor deforestation in the Amazon. By recording soundscapes, the experts can determine which animals are present through their distinct sounds.&nbsp;



Using this method, sounds can be used as scientific measurements to analyze the effects of deforestation. The researchers will gain a better understanding of how the acoustics of a forest can be used to measure its health.&nbsp;



"From space, parts of the Amazon rainforest that have previously been logged or burned may look lush and green, like a place buzzing with activity and full of sounds. But inside the rainforest, the animal life may tell a different story, of a harsh environment and a quieter soundscape," says NASA.



Video Credit: NASA’s Goddard Space Flight Center&nbsp;



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

Monitoring deforestation in the Amazon through sounds

[sendtonews key="u0TYxxqfF7-2186404-12187" type="single"] Today’s Video of the Day from NASA’s...