Spiders Tune Their Webs Like A Guitar

Full Story: http://www.npr.org/2014/06/10/319179807/spiders-tune-in-to-webs-music-to-size-up-meals-and-mates

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Pluck the silk of a spiderweb and it vibrates like a guitar string, scientists say. By strumming the strands and detecting the vibrations via sensors in its legs, a spider information about meals and mates.