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Category: Environment

Ill-judged tree planting in Africa threatens ecosystems, scientists warn

Ill-judged tree planting in Africa threatens ecosystems, scientists warn

The Guardian reports: Misguided tree-planting projects are threatening crucial ecosystems across Africa, scientists have warned. Research has revealed that an area the size of France is threatened by forest restoration initiatives that are taking place in inappropriate landscapes. One project in particular, the African Forest Landscape Restoration Initiative, aims to plant trees across 100m hectares (247m acres) of land by 2030. Scientists have warned that the scheme plans to plant trees in non-forest ecosystems such as savannahs and grasslands, potentially…

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Atlantic Ocean is headed for a tipping point − once melting glaciers shut down the Gulf Stream, we would see extreme climate change within decades, study shows

Atlantic Ocean is headed for a tipping point − once melting glaciers shut down the Gulf Stream, we would see extreme climate change within decades, study shows

Too much fresh water from Greenland’s ice sheet can slow the Atlantic Ocean’s circulation. Paul Souders/Stone via Getty Images By René van Westen, Utrecht University; Henk A. Dijkstra, Utrecht University, and Michael Kliphuis, Utrecht University Superstorms, abrupt climate shifts and New York City frozen in ice. That’s how the blockbuster Hollywood movie “The Day After Tomorrow” depicted an abrupt shutdown of the Atlantic Ocean’s circulation and the catastrophic consequences. While Hollywood’s vision was over the top, the 2004 movie raised…

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The world is losing migratory species at alarming rates

The world is losing migratory species at alarming rates

Inside Climate News reports: Humans are driving migratory animals—sea turtles, chimpanzees, lions and penguins, among dozens of other species—towards extinction, according to the most comprehensive assessment of migratory species ever carried out. The State of the World’s Migratory Species, a first of its kind report compiled by conservation scientists under the auspices of the U.N. Environment Programme’s World Conservation Monitoring Centre, found population decline, a precursor to extinction, in nearly half of the roughly 1,200 species listed under the Convention…

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Invasive ants disrupt lions’ hunting behavior in Kenya

Invasive ants disrupt lions’ hunting behavior in Kenya

GrrlScientist writes: In a remarkable, but accidental, real-life experiment demonstrating the ecological connections between all life regardless of how great or small, a study recently came out that documents how a tiny ant is affecting the mighty lion on the savannahs of Kenya. This ant is invasive and it’s far from home. It probably arrived from the island of Mauritius, located in the Indian Ocean, early during the last century, and began establishing itself in the Ol Pejeta Conservancy in…

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Many but not all of the world’s aquifers are losing water

Many but not all of the world’s aquifers are losing water

Science News reports: The world’s precious stash of subterranean freshwater is shrinking — and in nearly a third of aquifers, that loss has been speeding up in the last couple of decades, researchers report in the Jan. 25 Nature. A one-two punch of unsustainable groundwater withdrawals and changing climate has been causing global water levels to fall on average, leading to water shortages, slumping land surfaces and seawater intrusion into aquifers. The new study suggests that groundwater decline has accelerated…

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Greenland losing 30 million tonnes of ice an hour, study reveals

Greenland losing 30 million tonnes of ice an hour, study reveals

The Guardian reports: The Greenland ice cap is losing an average of 30m tonnes of ice an hour due to the climate crisis, a study has revealed, which is 20% more than was previously thought. Some scientists are concerned that this additional source of freshwater pouring into the north Atlantic might mean a collapse of the ocean currents called the Atlantic meridional overturning circulation (Amoc) is closer to being triggered, with severe consequences for humanity. Major ice loss from Greenland…

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Climate change threatens global forest carbon sequestration, study finds

Climate change threatens global forest carbon sequestration, study finds

University of Florida: Climate change is reshaping forests differently across the United States, according to a new analysis of U.S. Forest Service data. With rising temperatures, escalating droughts, wildfires, and disease outbreaks taking a toll on trees, researchers warn that forests across the American West are bearing the brunt of the consequences. The study, led by UF Biology researchers J. AARON HOGAN and JEREMY W. LICHSTEIN was published in the Proceedings of the National Academy of Sciences. The study reveals…

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Microplastics in drinking water affect behavior and immunity in mice, study reveals

Microplastics in drinking water affect behavior and immunity in mice, study reveals

PsyPost reports: A study published in the International Journal of Molecular Sciences has uncovered startling effects of microplastics on mice, revealing significant behavioral changes and immune responses in both young and old subjects. This research expands our understanding of how these environmental pollutants might be affecting mammals — potentially including humans. Microplastics, tiny plastic particles less than 5 millimeters in diameter, have been a growing concern for environmentalists and health professionals alike. Found in everything from water bodies to human…

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How America’s diet is feeding the groundwater crisis

How America’s diet is feeding the groundwater crisis

The New York Times reports: America’s striking dietary shift in recent decades, toward far more chicken and cheese, has not only contributed to concerns about American health but has taken a major, undocumented toll on underground water supplies. The effects are being felt in key agricultural regions nationwide as farmers have drained groundwater to grow animal feed. In Arkansas for example, where cotton was once king, the land is now ruled by fields of soybeans to feed the chickens, a…

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Amazon protector: the Brazilian politician who turned the tide on deforestation

Amazon protector: the Brazilian politician who turned the tide on deforestation

Nature reports: In a year that brought unrelenting bad environmental news, with record global warming, searing heatwaves and fires, Marina Silva delivered a hopeful message on 3 August. Brazil’s environment and climate-change minister announced that there had been a 43% drop in deforestation alerts on the basis of satellite images of the Amazon rainforest between January and July 2023, compared with the same period in 2022. This was a sharp shift from the previous four years, which had seen a…

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Amazon drought: ‘We’ve never seen anything like this’

Amazon drought: ‘We’ve never seen anything like this’

BBC World Service reports: The Amazon rainforest experienced its worst drought on record in 2023. Many villages became unreachable by river, wildfires raged and wildlife died. Some scientists worry events like these are a sign that the world’s biggest forest is fast approaching a point of no return. As the cracked and baking river bank towers up on either side of us, Oliveira Tikuna is starting to have doubts about this journey. He’s trying to get to his village, in…

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House speaker did little to fight toxic ‘burn pit’ his father campaigned against

House speaker did little to fight toxic ‘burn pit’ his father campaigned against

The Guardian reports: Mike Johnson was a few months away from assuming elected office in late 2014 when he was confronted with an impassioned appeal by the man he would later pay tribute to in his first speech as House speaker: his father Patrick. The elder Johnson, a former firefighter in the Louisiana city of Shreveport, had survived a near fatal industrial explosion when Mike was 12 years old, a defining event in both men’s lives. He had just joined…

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Biden’s EPA launches crackdown on planet-warming methane

Biden’s EPA launches crackdown on planet-warming methane

Politico reports: The Environmental Protection Agency unveiled sweeping new regulations targeting methane emissions from the oil and gas sector on Saturday, a significant milestone for President Joe Biden’s strategy for curbing the pollution driving up the Earth’s temperatures. The rule’s 3 a.m. rollout was timed to coincide with the ongoing U.N. climate talks in Dubai, where the U.S. has sought to play a leading role in global efforts to reduce emissions of the powerful planet-heating gas. But its biggest test…

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A glimpse of the world’s heart

A glimpse of the world’s heart

Nick Hunt writes: I am standing on the beach in Santa Marta, a small port city on Colombia’s humid Caribbean coast. Around me, brightly dressed families are eating ice cream and grilled meat. Venezuelan refugees beg for coins, and shredded plastic bags are snagged in the cactuses. Offshore, cargo vessels idle on blue-grey waves, perhaps heading east towards the Atlantic, or west to Panama and the Pacific. The industrial port bristles with cranes and gantries. Looking inland, my view is…

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U.S. coal power plants killed at least 460,000 people in past 20 years, report finds

U.S. coal power plants killed at least 460,000 people in past 20 years, report finds

The Guardian reports: Coal-fired power plants killed at least 460,000 Americans during the past two decades, causing twice as many premature deaths as previously thought, new research has found. Cars, factories, fire smoke and electricity plants emit tiny toxic air pollutants known as fine particulate matter or PM2.5, which elevate the risk of an array of life-shortening medical conditions including asthma, heart disease, low birth weight and some cancers. Researchers analyzed Medicare and emissions data from 1999 and 2020, and…

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Climate change and habitat loss push amphibians closer to extinction

Climate change and habitat loss push amphibians closer to extinction

NPR reports: When JJ Apodaca was starting graduate school for biology in 2004, a first-of-its-kind study had just been released assessing the status of the world’s least understood vertebrates. The first Global Amphibian Assessment, which looked at more than 5,700 species of frogs, toads, salamanders, newts and other amphibians became “pretty much the guiding light of my career,” said Apodaca, who now heads the nonprofit group Amphibian and Reptile Conservancy. Nineteen years later, a second global assessment of the world’s…

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