Stanford scientists have found that chronically low levels of oxygen throughout the oceans hampered the recovery of life after the Permian-Triassic extinction, the most catastrophic die-off in our planet’s history. Also known as the “Great Dying,” global ecosystems collapsed as some 90 percent of species perished in this extinction event 250 million years ago. The new findings, published this week […]
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When the atmosphere had much higher levels of carbon dioxide, Antarctica was as warm as California. New research has revealed that 430 million to 50 million years ago, temperatures on the frozen continent averaged 57 degrees Fahrenheit, with part of the surrounding Pacific Ocean reaching up to 72 degrees. In this ancient era, known as the Eocene epoch, carbon dioxide […]
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Researchers say the economic costs of failing to take action on climate change will be much greater than previously thought – with average global incomes cut by almost a quarter. Even the strongest economy can overheat. As soon as the average annual temperature goes beyond 13°C or 55°F, productivity starts to drop. And, unexpectedly, new research in the US shows […]
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According to a new study by Nasa, Antarctica’s Larsen B ice-shelf is on course to completely disintegrate within the next five years. Studies show that the 10,000-year-old ice shelf, after partially collapsing in 2002, is “quickly weakening.” “These are warning signs that the remnant is disintegrating,” said Ala Khazendar of Nasa’s Jet Propulsion Laboratory (JPL) in Pasadena, California. “Although it’s […]
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Climate change appears to be affecting the jet stream, altering the weather patterns over the U.S. so that regions can get “stuck” in extreme weather for weeks, a new study has found. The jet stream is the fast-moving, high-altitude air current that shuttles weather from west to east over North America and Europe. But the pronounced warming of the Arctic—where […]
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Scientists in the US who have been checking on the health of the Arctic over the last year are worried by what they’ve learned: it’s warmer, has less ice, and some of its animals and fish are facing new stresses. And in a surprise finding , which they cannot yet explain, the scientists discovered that green vegetation over much of […]
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Even in a world where extreme weather is becoming more common, said Sarah Lyall in The New York Times, the past week has been truly bizarre. In China, now suffering through its coldest, harshest winter in memory, the roofs of houses in Xinjiang collapsed under the weight of deep snow. It was so hot in Australia, meanwhile, that forecasters added […]
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The drylands of the world are getting greener, and researchers think it is thanks to higher levels of carbon dioxide in the atmosphere. In a paradoxical discovery, even as landscapes become increasingly at risk of desertification, they may also look more luxuriant. Two scientists from Purdue University in Indiana, US, and a researcher in Saudi Arabia report in the journal […]
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The world’s leading economies are heading in the right direction on tackling climate change, but some still have a long way to go to make their undertakings politically credible, according to a UK research center. With the Paris Agreement barely two months old, the world now moves from talk to action − or at least that’s the theory. The Agreement […]
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Crested and rockhopper penguins are threatened by climate change – but this time the penguins could be at risk because they cannot change their own ways. Evolution has left them with a rigid parenting strategy, probably well adapted for climate conditions so far. But as temperatures rise, conditions change and food supplies become precarious, the inflexible roles of male and female […]
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