Humans With Amazing Senses

When bats go out to hunt, they send out sonar signals at such high frequencies and in such rapid bursts that they can hear the signals bounce off mosquitoes in midair. They then zero in on the insects like laser-guided missiles. Dolphins use the same technique to find their dinners. It's called echolocation, a technique that uses sound to identify objects by the echoes they produce. Fourteen-year-old Ben Underwood of Sacramento, Calif., is one of the few people known to use echolocation...Full Story
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