A World Wildlife Fund photograph taken along the western shore of Hudson Bay in November 2010 shows a female polar bear with two cubs near Churchill, Canada, in this image released to Reuters on ... more 
A World Wildlife Fund photograph taken along the western shore of Hudson Bay in November 2010 shows a female polar bear with two cubs near Churchill, Canada, in this image released to Reuters on February 9, 2011. less 
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| Photo By REUTERS/Geoff York/World Wildlife Fund/Handout
Sat, Sep 1, 2012 8:00 PM EDT