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November 29 2012

Alaskan Glacier to Halt Retreat in 2020


The retreat of Alaskaâs Columbia Glacier may halt by 2020 after climate change has melted 15 miles of the glacier, relative to its size in 1794. A computer model predicted that the glacier will reach a stable position when it is approximately 26 miles long, down from 41 miles.

"Presently, the Columbia Glacier is calving about 2 cubic miles of icebergs into the ocean each year -- that is over five times more freshwater than the entire state of Alaska uses annually," said William Colgan of the University of Colorado lead author of the modeling study in a press release.

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