2010 Greenland Ice Sheet Melt Greater Than Any Single-Year Loss In Past 50 Years - AFP

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WASHINGTON — Greenland's ice sheet melted the most it has in over a half century last year, US government scientists said Tuesday in one of a series of "unmistakable" signs of climate change.

"The world continues to warm," the National Oceanic and Atmospheric Administration said in a briefing paper for reporters. "Multiple indicators, same bottom-line conclusion: consistent and unmistakable signal from the top of the atmosphere to the bottom of the oceans."

An annual climate survey, which includes work by scientists from 45 countries, said that ice sheet in Greenland melted at its highest rate since at least 1958, when similar data first became available.

Arctic sea ice shrank to its third smallest area on record, while the world's alpine glaciers shrank for the 20th straight year, the study said.

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