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Page added on October 30, 2008

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Man-made climate change seen in Antarctica, Arctic

OSLO (Reuters) – Both Antarctica and the Arctic are getting less icy because of global warming, scientists said on Thursday in a study that extends evidence of man-made climate change to every continent.

Detection of a human cause of warming at both ends of the earth also strengthens a need to understand ice sheets on Antarctica and Greenland that would raise world sea levels by about 70 meters (230 ft) if they all melted, they said.

“We’re able for the first time to directly attribute warming in both the Arctic and the Antarctic to human influences,” said Nathan Gillett of England’s University of East Anglia of a study he led with colleagues in the United States, Britain and Japan.

The Arctic has warmed sharply in recent years and sea ice shrank in 2007 to a record low. But Antarctic trends have been confusing — some winter sea ice has expanded in recent decades, leaving doubts for some about whether warming was global.

Reuters



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