1. Polar Bears Resort to Cannibalism as Arctic Ice Shrinks
... other polar bears." Environmentalists believe that the shrinking of the polar ice (due to global warming) may lead to the extinction of polar bears before the end of the 21st century. The Center for Biological Diversity of Joshua Tree, CA, petitioned the federal government in 2005 to list polar bears as "threatened" under the Endangered Species Act, saying that cannibalism demonstrates the adverse effects that global warming has ... million square miles) of ice at the end of each summer. Today's levels are down about 40% from those numbers. A research scientist with the National Snow and ...
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