Where Do Our Facial Expressions Come From?

Our facial expressions convey a lot about our emotions, but why? Hank explores how our evolution has helped form how we communicate with our faces.

Hosted by: Hank Green
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Sources:
http://www.paulekman.com/journal-articles/
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Images: https://commons.wikimedia.org/wiki/File:Expression_of_the_Emotions_in_Man_and_Animals_title_page.jpg

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