Polar Bear Cannibalism: Scientist may be seeing the “bloody fingerprints” of global warming

In decades of researching polar bears in Alaska and Canada, scientists have not seen incidents of the bears killing each other for food. Until recently. As longer periods without ice prevent the bears from hunting ringed seals, their natural food—and as environmentalists predict that shrinking polar ice will cause the extinction of the bears before the end of the century--researcher are now studying three examples of cannibalism. According to Deborah Williams of Alaska Conservation Solutions, speaking to the Associated Press, the incedents represent the "bloody fingerprints" of global warming.