Springtime Bug-Out

Crocuses, robins and spring peepers aren't the only creatures that signal springtime. Jerry Rozen, curator of the bee collection at the American Museum of Natural History in New York, explains what bees do all winter and how they know when to emerge from hibernation.

Source: http://www.npr.org/2011/04/01/135042060/springtime-bug-out?ft=1&f=1007

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