Photo: Hibernating Animals Suffer Dangerous Wakeup Calls Due to Warming

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Official groundhog handler Ben Hughes holds Punxsutawney Phil after the spiny hibernator made his prediction of an early spring in Punxsutawney, Pennsylvania, on February 2, 2007.

Animals around the world might benefit from a longer winter, scientists say. Global warming is disrupting many hibernation schedules, sometimes with deadly consequences.

Photograph by Jason Cohn/Reuters

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