From yesterday's New York Times: 
The human-driven buildup of heat-trapping greenhouse gases in the 
atmosphere  appears to have ended a slide, many millenniums in the making, toward 
cooler  summer temperatures in the Arctic, the authors of _a new study_ 
(http://www.sciencemag.org/cgi/content/abstract/325/5945/1236)  report. 
_http://www.nytimes.com/2009/09/04/science/earth/04arctic.html?scp=1&sq=ice%
20age&st=cse_ 
(http://www.nytimes.com/2009/09/04/science/earth/04arctic.html?scp=1&sq=ice%20age&st=cse) 

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