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Metabolism study signals more trouble ahead for polar bears
JAY GORY, MANAGING EDITOR, science
By Will Dunham WASHINGTON (Reuters) - A study of polar bear metabolism conducted near Alaska's Prudhoe Bay has provided more reason to worry about the future of these massive predators that prowl the Arctic. Scientists said on Thursday they examined activity levels, foraging behavior and blood biochemistry of a group of polar bears during their prime hunting season on the sea ice of the Beaufort Sea, determining that the metabolism of the species is about 60 percent greater than previously understood. The decline of Arctic sea ice amid global climate change is making polar bears travel farther to find prey such as ringed seals. read more
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