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It's a snoozer: Hibernation slows bears more than we thought
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It's a snoozer: Hibernation slows bears more than we thought

An infrared camera captures an Alaskan black bear in deep hibernation. For the first time, researchers watched bears slumber all winter, discovering that the famous hibernators maintain a relatively high body temperature even as their breathing, heart rate, and metabolism drop far below normal. (Oivind Toien/Institute of Arctic Biology/University of Alaska Fairbanks)

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