Polar bears may be turning to snow goose eggs to help them survive as Arctic sea ice melts due to global warming, scientists say. Polar bears typically hunt seals out at sea, returning to land when springtime temperatures melt the ice floes the bears use as rest stops. But climate change has been causing sea ice to melt earlier each year, forcing polar bears to come ashore sooner. In a previous study, biologist Robert Rockwell and his colleague Linda Gormezano documented polar bears in Canada. (source: news.nationalgeographic.com)
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