Megan Lutz, left, and Justin Chun react to amateur comedian Robert Lynch at the Metropolitan Room in Manhattan, N.Y. Lynch is an anthropologist researching what laughing reveals about us.
Melanie Burford for NPR
August 6, 2012 Graduate student Robert Lynch is on a quest to deconstruct our built-in instinct for humor, and find out why making people laugh could be important to the way we've adapted to survive.
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