Independent: Polar bears will be wiped out if humans don't reverse the trend of global warming, according to a blunt report by the US goverment. In a draft recovery plan for polar bears produced by the US Fish and Wildlife Service, it says: "The single most important step for polar bear conservation is decisive action to address Arctic warming." "Short of action that effectively addresses the primary cause of diminishing sea ice, it is unlikely that polar bears will be recovered." Polar bears eat, mate and...