Friday, September 7, 2012

How hiccups, yawns and giggles make us human

How hiccups, yawns and giggles make us human: In his new book, "Curious Behavior: Yawning, Laughing, Hiccupping, and Beyond," Robert R. Provine takes us on a tour of those all-too-common quirks that make us sometimes hide our heads in shame.


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