Polar bears 'running out of food'

Polar bears 'running out of food'  BBC News Climate Change Diet: Arctic Sea Ice Thins, So Do Polar Bears  U.S. News & World Report Polar bears might be worse off than we thought, study finds  OregonLive.com Polar bears' bodies work 60% harder than thought — which makes surviving climate change even tougher  Los Angeles TimesFull coverage

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