Latest news with #arctic
Yahoo
4 days ago
- Science
- Yahoo
Scientists Are Warning of A Brand-New Kind of Acid Rain
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here's what you'll learn when you read this story: While acid rain caused by sulfur dioxide is an environmental threat of the past (at least, for now), a new kind of acid is proliferating in rain water—as well as groundwater, ice cores, and even human blood. Trifluoroacetic acid (TFA) is a subclass of 'forever chemical' that's been steadily increasing in concentrations around the world. With calls to consider this rise in TFA a planetary threat, some governments are starting ban chemicals linked to TFA—but the threat will require global cooperation. Acid rain may have a sequel, and like most sequels, it's arguably worse. While the world's first bout of acid rain (at least, in modern times) came from increased concentrations of sulfuric acid produced largely from coal plants, this new anthropogenic source is possibly more pervasive, more persistent, and more sinister. Its name is Trifluoroacetic acid (TFA), a kind of 'forever chemical' that, for decades, has been steadily increasing in rain water—but not just rain water. Countries around the world have found increasing concentrations in groundwater, arctic ice cores, wine, and even human blood. In fact, TFA is likely the most pervasive form of per- and poly-fluoroalkyl (PFAS)—technically, a subclass known as ultrashort-chain perfluoroalkyl acid (PFAA)—on Earth due in part to the fact that longer-chain PFAS degrade into TFA via incinerators or sewage treatment plants. They're also used in refrigerants instead of chlorofluorocarbons and hydrochlorofluorocarbons, which were famously known to deplete the Earth's ozone layer. In October of 2024, a team of European environmental scientists raised the TFA alarm, stating that a rise in concentration could be considered a threat to 'planetary boundaries'—a system designed to make sure the planet remains habitable for human life (which we are doing a real bang-up job at following). 'Since the 1990s, it has been suggested that hazard-related concerns of TFA and other short-chain PFAAs are much lower than those of PFAAs with longer perfluoroalkyl chains, which are more bioaccumulative and generally more toxic,' the authors wrote back in October. 'However, these early reports did not consider TFA's ubiquitous accumulation in the environment, in particular its observed accumulation in water resources and bioaccumulation in various plants, including crops.' One of the most dangerous things about PFAAs is what we don't know about them. Unlike other PFAS (of which there are, sadly, thousands of different kinds), TFA is so small (a.k.a. ultrashort) that it's water-soluble, meaning it likely passes through the human body pretty quickly. A new Nature article reports that some scientists find this evidence compelling enough to not even consider TFA a kind of PFAS, but a growing chorus of voices are raising concerns that increased concentrations of TFA in water and food sources could render TFA's fast-moving nature a moot point. In fact, TFA's water-solubility could be a long-term headache. If scientists and governments eventually decide that TFA does need to be removed from drinking water and other sources, current filtration technologies are not up to the task. In other words, ridding the world of TFA will not only be immensely difficult, it'll also be incredibly expensive. Current regulations to eliminate certain forms of PFAS are already proving to be fiscally onerous. Thankfully, some governments are taking action. Denmark, for example, banned 23 substances earlier this month known to contain PFAS that contribute to rising TFA concentrations. Meanwhile, the U.S. is lagging behind—the Environmental Protection Agency doesn't even define TFA as a 'forever chemical,' much to the dismay of environmentalist groups and to the merriment of many industry leaders. Rising concentrations of TFA is the acid rain sequel no one wanted. But just like every terrible sequel ever made, it seems like we're getting it anyway. You Might Also Like The Do's and Don'ts of Using Painter's Tape The Best Portable BBQ Grills for Cooking Anywhere Can a Smart Watch Prolong Your Life? Solve the daily Crossword
Associated Press
17-03-2025
- Science
- Associated Press
Permafrost melt posing ‘significant risks' to Arctic regions' communities, scientists warn
Thawing permafrost can lead to the mobilization of contaminants, affecting drinking water quality and food safety in Arctic regions. SHARJAH, EMIRATE OF SHARJAH, UNITED ARAB EMIRATES, March 17, 2025 / / -- The Arctic permafrost thaw is hazardous to the livelihood, safety, health, food security, and the infrastructure of communities living in Arctic regions, an international group of scientists have warned. In a comparative interdisciplinary study, the scientists analyze four arctic regions, one in each of Russia, Canada, Norway and Greenland, to identify and assess the key hazards of permafrost thaw. Their findings, published in the journal Communications Earth and Environment, show that due to the melting of ice in their soil, the four Arctic regions suffer from infrastructure failure, disruptions to mobility and supply chains, declining water quality, food security challenges, and increased exposure to diseases and contaminants. They write, 'Since our study areas represent perspectives from a range of human and natural Arctic permafrost settings, the framework and risk assessment we present here are applicable to other (continuous) permafrost regions experiencing similar hazards and impacts, thereby supporting the development of overarching adaptation and mitigation strategies.' The study is something of a novelty as the scientists adopt a comparative approach that spans a variety of disciplines, and environmental and societal contexts, with a transdisciplinary synthesis that takes various risk perceptions into account. Adding weight to the findings is the fact that the research is the fruit of a consortium-based collaborative effort with contributions from the world's leading institutions in climate change research. Climate change is blamed for the erratic and long-term shifts in the Earth's weather and temperature with scientists reporting a world that has been warming up quickly in the past decades. The Earth's warming is behind the permafrost thaw – a process which refers to the melting of the ice in the frosty soil of Arctic regions. A thawing permafrost can have grave consequences on the environment and the inhabitants as the frozen soil melts. 'Climate change is accelerating Arctic permafrost thaw, posing significant risks to both the environment and human communities,' said Dr. Khaled Abbas, University of Sharjah's associate professor in environmental health sciences and a co-author. 'This research examines these threats, focusing on the growing concerns associated with permafrost degradation and human activity.' Through a risk analysis framework that integrates both environmental and societal perspectives, the study provides valuable insights into how climate change drives permafrost degradation and its cascading effects on Arctic communities. At the same time, it proposes strategies for mitigation and adaptation, aiming to enhance resilience in affected regions. 'The research underscores the critical role of interdisciplinary collaboration in tackling these complex challenges. By bringing together experts from environmental science, public health, engineering, and policy, the study offers a comprehensive understanding of how permafrost thaw impacts not only Arctic communities but also global populations,' Dr. Abbas maintains. The authors' findings emphasize that climate change is not just a regional issue confined to the Arctic but a global crisis with far-reaching consequences. 'Permafrost thaw poses diverse risks to Arctic environments and livelihoods. Understanding the effects of permafrost thaw is vital for informed policymaking and adaptation efforts,' says Dr. Abass. 'Our findings show that permafrost thaw is not only an environmental issue but also a direct challenge to the safety, health, and well-being of Arctic communities.' The authors pursue an inter- and transdisciplinary risk analysis based on multidirectional knowledge exchanges and thematic network analysis. They underscore the vital role of permafrost within Arctic ecosystems and highlight the main risks associated with its vulnerability to climate change. They assess permafrost risks in the four regions they have studied 'by characterizing the relationships between the physical processes, key hazards, and societal consequences on life domains via thematic network analysis and how each of these relationships was perceived across the four case studies.' Their description of the risks from permafrost thaw across the four regions is five-pronged with the failure in infrastructure cited as the first hazard 'resulting in adverse consequences for costs and economy, planning and fate control, and health and well-being.' The second hazard, according to the scientists, relates to 'disruptions of mobility and supplies, often created by ground instabilities and erosion, impact costs and the economy, as well as recreation and being in nature.' The third risk emanates from ground instability the permafrost thaw causes as the ice in the soil melts which 'affects health and well-being as well as costs and the economy.' The fourth hazard the authors attribute to the changes in flora and fauna and hydrological and biochemical cycles which pose 'challenges for food security … [and] consequences for local costs and the economy as well as culture and language.' Finally, the study dwells on the health and well-being of communities inhabiting these regions. It shows that the thawing of permafrost exposes these communities 'to infectious diseases and contaminants … driven by changes in climate and weather conditions … which creates concerns for human and ecosystem health'. Dr. Abass says the study is a wake-up call for the world that climate change is causing Arctic permafrost to thaw, leading to severe environmental and societal challenges. 'This research underscores the urgent need for improved planning and adaptation strategies to help Arctic communities navigate these growing threats. As the frozen ground warms, roads, houses, and infrastructure are collapsing, disrupting transportation and access to essential supplies. 'Water sources are becoming polluted, while food security is at risk due to changes in hunting and fishing patterns. Additionally, thawing permafrost is releasing long-trapped pollutants and potentially harmful bacteria and viruses, creating new health risks.' The research is of implications for policymakers, environmental agencies, and industries involved in infrastructure and resource management, affirms Dr. Abass, adding. 'Organizations focused on climate adaptation, indigenous community development, and sustainable governance may find the study highly relevant. 'This study provides critical information for governments and policymakers to develop climate adaptation strategies in Arctic regions and beyond. It emphasizes the need for improved urban planning, infrastructure reinforcement, and sustainable resource management. The research also highlights the urgency of preparing for permafrost thaw's consequences on ecosystems and human livelihoods.' 50 165 4376
Yahoo
27-02-2025
- Science
- Yahoo
Scientists track new predator as it moves into Arctic waters — here's why this could be catastrophic for the rest of the world
Killer whales, also known as orcas, have officially made the Arctic Ocean their home — something that was nearly impossible until now. Historically, thick ice sheets blocked the whales from venturing into these frigid waters, but as rising temperatures melt the ice, new pathways have opened up, as detailed by Mongabay. Researchers at the University of Manitoba recently identified two small, genetically distinct populations of orcas now living in Arctic waters year-round. The discovery, published in Global Change Biology, was a surprise to even the research team, who expected to find a single migrating group rather than two separate populations. Researchers explained that tracking these animals is no easy task. Using genetic testing from skin and blubber samples, the team confirmed that these Arctic orcas are unique, meaning they may not even recognize one another as potential mates. Do you think America does a good job of protecting its natural beauty? Definitely Only in some areas No way I'm not sure Click your choice to see results and speak your mind. The arrival of killer whales in the Arctic is more than just an interesting ecological shift — it has the potential to disrupt an already fragile marine ecosystem. These apex predators are now able to hunt Arctic whales like belugas, narwhals, and bowhead whales, which were previously protected by sea ice. "The arctic whales are just chubby, slow, and delicious," said evolutionary geneticist Colin Garroway, underscoring how vulnerable these prey species are to orcas, per Mongabay. While there are still hundreds of thousands of Arctic whales compared to a few hundred killer whales, the long-term impacts of this shift remain uncertain. Beyond the ecological consequences, this change is also a concern for Indigenous communities who rely on Arctic whales for food, culture, and economy. The continued presence of killer whales could impact sustainable hunting traditions that have existed for generations. Researchers are tracking Arctic killer whale populations using satellite tags and genetic analysis to understand their movements and impact. Government agencies, including the U.S. National Oceanic and Atmospheric Administration and Fisheries and Oceans Canada, are evaluating policies to protect vulnerable Arctic species. The Arctic Council is pushing for stricter conservation efforts, while global climate initiatives aim to slow ice loss. Indigenous communities are partnering with scientists to integrate traditional knowledge into conservation strategies. These combined efforts could help manage the ecological shift and protect Arctic marine life from further disruption. The presence of orcas in the Arctic is just one of the many signs that our planet is shifting — but the good news is that there are still steps we can take to protect the delicate balance of this unique and vital ecosystem. Join our free newsletter for good news and useful tips, and don't miss this cool list of easy ways to help yourself while helping the planet.
Yahoo
26-02-2025
- Science
- Yahoo
Scientists track new predator as it moves into Arctic waters — here's why this could be catastrophic for the rest of the world
Killer whales, also known as orcas, have officially made the Arctic Ocean their home — something that was nearly impossible until now. Historically, thick ice sheets blocked the whales from venturing into these frigid waters, but as rising temperatures melt the ice, new pathways have opened up, as detailed by Mongabay. Researchers at the University of Manitoba recently identified two small, genetically distinct populations of orcas now living in Arctic waters year-round. The discovery, published in Global Change Biology, was a surprise to even the research team, who expected to find a single migrating group rather than two separate populations. Researchers explained that tracking these animals is no easy task. Using genetic testing from skin and blubber samples, the team confirmed that these Arctic orcas are unique, meaning they may not even recognize one another as potential mates. Do you think America does a good job of protecting its natural beauty? Definitely Only in some areas No way I'm not sure Click your choice to see results and speak your mind. The arrival of killer whales in the Arctic is more than just an interesting ecological shift — it has the potential to disrupt an already fragile marine ecosystem. These apex predators are now able to hunt Arctic whales like belugas, narwhals, and bowhead whales, which were previously protected by sea ice. "The arctic whales are just chubby, slow, and delicious," said evolutionary geneticist Colin Garroway, underscoring how vulnerable these prey species are to orcas, per Mongabay. While there are still hundreds of thousands of Arctic whales compared to a few hundred killer whales, the long-term impacts of this shift remain uncertain. Beyond the ecological consequences, this change is also a concern for Indigenous communities who rely on Arctic whales for food, culture, and economy. The continued presence of killer whales could impact sustainable hunting traditions that have existed for generations. Researchers are tracking Arctic killer whale populations using satellite tags and genetic analysis to understand their movements and impact. Government agencies, including the U.S. National Oceanic and Atmospheric Administration and Fisheries and Oceans Canada, are evaluating policies to protect vulnerable Arctic species. The Arctic Council is pushing for stricter conservation efforts, while global climate initiatives aim to slow ice loss. Indigenous communities are partnering with scientists to integrate traditional knowledge into conservation strategies. These combined efforts could help manage the ecological shift and protect Arctic marine life from further disruption. The presence of orcas in the Arctic is just one of the many signs that our planet is shifting — but the good news is that there are still steps we can take to protect the delicate balance of this unique and vital ecosystem. Join our free newsletter for good news and useful tips, and don't miss this cool list of easy ways to help yourself while helping the planet.
Boston Globe
18-02-2025
- Climate
- Boston Globe
New England's cold weather persists with influx of biting Arctic air
New England will be on the fringe of this blast of cold air, but it will still feel blustery cold here — slipping 5 to 15 degrees below normal through Thursday. Advertisement A shot of Arctic cold will descend into the middle part of the country throughout the week, with some of that cold air reaching New England. Pivotal Weather Where is all this cold really coming from? Many news outlets are quick to label these shots of cold air as the polar vortex, but these frigid conditions are actually unrelated to the vortex - the swirling winds high above the Arctic. Instead, a very strong upper-level low is responsible for the bitter cold air we're experiencing now. Essentially, this is a powerful wind storm in the middle level of our atmosphere that doesn't produce precipitable weather like snow, but drives cold air. The low is helping fuel strong surface high pressure, reaching over 1,050 millibars. High pressure is falling air and it's pulling down Arctic air from the back side of the upper-level storm, slinging this exceptionally cold, dry air across broad areas of the US as it moves. An upper-level low, in purple, is fueling a surface high pressure to deliver arctic air through the Lower 48 this week. Pivotal Weather The jet stream is digging south through the core of the country, which pulls the Arctic air to the south and southeast, leaving places like Minneapolis, Chicago, Kansas City, and even Dallas, with temperatures plunging 20 to 40 degrees below average. Meanwhile, as the jet stream bends toward New England, it's helping keep our region protected from the deepest cold. Advertisement The jet stream digs south through the middle part of the country, but will stay close enough to New England to avoid the deepest cold from entering the region. Boston Globe As I mentioned, the cold air we're experiencing is not the actual polar vortex, which right now looks healthy and intact. Remember, the polar vortex is very high up in the atmosphere, where it's usually neatly contained. Occasionally, a portion of the polar vortex will break off and push frigid air into the Lower 48 during the winter, but that is not the case this week. The polar vortex can be seen contained in the higher atmosphere over Northern Canada and Greenland. WeatherBell What can New England expect? With the fringe of the cold air creeping into New England, temperatures will stay mostly in the 20s this week with the best chance to get back near freezing on Friday. Overnight lows will likely stick to the low to mid-teens during this stretch. The good news is that the wind will relax as the week goes on as Dave mentioned in his forecast today - which will help take that added bite out of the air. You can keep track of the cold throughout the next few days below. It'll be a below-average cold week across New England with morning temperatures in the single digits and teens while slowly building marginally warmer throughout the week. Boston Globe As of now, it looks we will have to wait until the weekend before temperatures finally break above freezing across parts of Southern New England, including Boston. We could see highs in the mid- to upper 30s on Saturday and Sunday. After that, it looks like a bit of a warmup is in store. for our that will arrive straight into your inbox bright and early each weekday morning. Ken Mahan can be reached at
