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Vestigial Structures

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Published on Mar 29, 2012

Hank talks about some of the structures in our bodies that are "leftover" from previous evolutionary phases of humanity.

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Sources:
http://www.newscientist.com/article/m...
Coccyx: http://www.ncbi.nlm.nih.gov/pmc/artic...
http://www.livescience.com/11317-top-...
http://en.wikipedia.org/wiki/Vestigial

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