The Science of Smiling

The Brian Lehrer Show | Jan 26, 2011

Carl Zimmer, contributor to The New York Times' Science Times and author of Brain Cuttings: Fifteen Journeys Through the Mind, talks about developments in the research of smiling and what smiling means for our brains.

President Obama's smile was impressively consistent when he posed for photographs with 130 foreign dignitaries at the Metropolitan Museum of Art in 2009.  Check out the video below, from Bus Your Own Tray blogger Eric Spiegelman.

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