05: Why Humans Smile at Each Other copertina

05: Why Humans Smile at Each Other

05: Why Humans Smile at Each Other

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In this episode of Did You Know?, Jody Colvard talks about something so simple, so natural, that you may not even notice when you do it. You smile, and strangers smile back. A baby smiles at you and suddenly your whole nervous system softens.

But… why?

Why do humans smile at each other?
And why does something as small as a curve of the lips feel like a spark of connection?


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