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August 2, 2013
Strange But True!
Q. What's the “acoustic arms race” going on in your backyard this summer?
A. It's the “bats and moths in sonar combat,” says biologist William E. Conner in American Scientist magazine. Animals can hunt either passively by listening for noises made by their prey, or actively (as most bats and some whales do) by projecting sounds and then listening for telltale echoes, called “echolocation.” In essence, they “see” using sound.
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