Bug-a-Boo!

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Why do we find cockroaches disgusting and spiders scary? Fear of snakes and spiders are two of the most common phobias in the world and researchers say evolution likely plays a role. But what explains our aversion to harmless insects--it may be cultural, psychologists say. Cover shot by Thomas Shahan. Produced by Flora Lichtman . Viewed 19712 times.

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