Sunday, November 28, 2010

Rapid thaw of permafrost concerns climate experts - San Francisco Chronicle http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNGoWJody7OVmuA6IeE56FLIfPi3tw&url=http://www.sfgate.com/cgi-bin/article.cgi?f%3D%252Fc%252Fa%252F2010%252F11%252F28%252FMNAN1GCV8F.DTL
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