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11 U.S. species endangered by climate change

By: Bryan Nelson on Jan. 4, 2010, 11:10 a.m.
Grizzly Bears

Photo: SARhounds/Flickr

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Grizzly bears

Often overshadowed by the polar bear, grizzlies are also threatened by global warming. The bears are denning later in the fall because of the changing climate, which leads to more hunter-bear interaction and a decline in food sources.