Permafrost-thawing Concern Deepens
By DOUG O'HARRAAnchorage Daily News
Published: December 25, 2005
Last Modified: December 25, 2005 at 05:25 AM
Warming temperatures could melt the top 11 feet of permafrost in Alaska by the end of the century -- damaging roads and buildings with sinkholes, transforming forest and tundra into swamps, and releasing vast amounts of greenhouse gases into the air.
This meltdown forecast comes amid other signals that Arctic climate has been changing fast: shrinking sea ice cover, warmer temperatures and shifting vegetation.
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