A new study led by the U.S. Geological Survey (USGS) and the University of Wyoming found that increased westward ice drift in the Beaufort and Chukchi seas requires polar bears to expend more energy walking eastward on a ...
Ecology
Jun 7, 2017
14
85
A pregnant polar bear seeking to dig her maternity den chose an unlikely spot: a snow drift along a bridge leading to an artificial production island off the north coast of Alaska.
Ecology
May 19, 2017
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11
Scientists will intensify scrutiny of the polar regions as part of an international campaign to improve global weather predictions and minimise risks linked to rapid climate change, the UN said Monday.
Earth Sciences
May 15, 2017
0
30
After the relative quiet of the long dark winter months, the Arctic will be a tad busier over the coming weeks as numerous researchers descend on this harsh, yet fragile environment. Their aim is not to disturb its beauty, ...
Earth Sciences
Mar 21, 2017
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8
Polar bears are listed as a threatened species as the ice-covered ocean they depend on for hunting and transportation becomes scarce. Changes in the Arctic Ocean are also affecting the humans who have called this area home ...
Ecology
Mar 15, 2017
0
9
For the past eight years, Operation IceBridge, a NASA mission that conducts aerial surveys of polar ice, has produced unprecedented three-dimensional views of Arctic and Antarctic ice sheets, providing scientists with valuable ...
Earth Sciences
Mar 10, 2017
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65
There's good and bad news for people, and polar bears, threatened by the Arctic's vanishing sea ice, scientists said Monday.
Environment
Mar 6, 2017
0
116
Mars has many characteristics that put one in mind of Earth. Consider its polar ice caps, which are quite similar to the ones in the Arctic and Antarctic circle. But upon closer examination, Mars' icy polar regions have numerous ...
Space Exploration
Mar 3, 2017
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11
One of the most worrisome aspects of climate change is the role played by positive feedback mechanisms. In addition to global temperatures rising because of increased carbon dioxide and greenhouse gas emissions, there is ...
Earth Sciences
Feb 24, 2017
7
414
Aaron Putnam sits stop a boulder high in the Sierras of central California, banging away with hammer and chisel to chip out a sample of ice age history. Each hunk of rock is a piece of a vast puzzle: How did our climate system ...
Earth Sciences
Feb 15, 2017
1
13
