For polar bears, climate change diet is a losing proposition

With Arctic sea ice shrinking from climate change, many polar bears have to shift their diets to land during parts of the summer. A new study looking at Hudson Bay polar bears tries to figure out if they can keep up their roly-poly figure, which is what’s needed. Tuesday's research found that an overwhelming number of them are dropping the pounds no matter what they do to try to beef up their weight. They may pig out on berries or sea birds or veg out in semi-hibernation. Either way, they drop on average 47 pounds over three weeks.

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