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Health

What Makes Us Smile?

Smile
Eric McGregor http://www.flickr.com/photos/ericmcgregor/124313181
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flickr.com

Sure, it's more or less a given that we smile when we're happy and we smile when our picture is taken.  But do we also smile automatically throughout the day when we make eye contact with strangers?  How often do we smile in conversation? 

Today's program is a rebroadcast of an earlier show.

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