It has been hypothesized, that the tipping of one element of the Earth's system can catalyze the tipping of others in a cascade. A study gives an example of an alternative option, in which the collapse of one component might ...
Earth Sciences
Jan 30, 2023
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The beginning of the last glacial period was characterized in the Northern hemisphere by major accumulation of snow at high latitudes and the formation of a huge polar ice sheet. For climatologists this was paradoxical, since ...
Earth Sciences
Sep 1, 2013
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In the northern hemisphere, ice sheets ebb and flow in 100,000-year cycles, driven by varying amounts of sunlight falling on Earth's surface as its orbit and orientation toward the sun changes. But astronomical variations ...
Earth Sciences
Sep 5, 2013
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Tor Selnes owes his life to a lamp. He miraculously survived a fatal avalanche that shed light on the vulnerability of Svalbard, a region warming faster than anywhere else, to human-caused climate change.
Environment
Jun 22, 2022
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(PhysOrg.com) -- After discovering an emerging crack that cuts across the floating ice shelf of Pine Island Glacier in Antarctica, NASA's Operation IceBridge has flown a follow-up mission and made the first-ever detailed ...
Earth Sciences
Nov 2, 2011
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First analyses of the longest sediment core ever collected on land in the terrestrial Arctic, published this week in Science, provide documentation that intense warm intervals, warmer than scientists thought possible, occurred ...
Earth Sciences
Jun 21, 2012
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(Phys.org)—There is consensus among scientists that the glaciers in the Himalayas and Tibet are shrinking, but there is disagreement on the extent of the shrinkage because of the difficulty in interpreting satellite data. ...
(PhysOrg.com) -- From the Antarctic Ocean, Earth scientist Rob Dunbar blogs about the challenges of drilling ancient deep-sea sediments -- and what he's found in them.
Earth Sciences
Feb 18, 2010
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Scientists have documented a previously unknown subpopulation of polar bears living in Southeast Greenland. The polar bears survive with limited access to sea ice by hunting from freshwater ice that pours into the ocean from ...
Ecology
Jun 16, 2022
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505
Monitoring glaciers and ice sheets is complicated work. They move and change shape. They melt.
Engineering
Nov 29, 2011
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