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Why Body Hair?

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Published on Sep 17, 2013

In today's episode Hank talks about hair: What's it good for, what's it made of, and why do we have less than other mammals?

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Sources for this episode:
http://science.howstuffworks.com/life...
http://animaldiversity.ummz.umich.edu...
http://www.hair-science.com/
http://www.economist.com/node/21541808
http://www.nytimes.com/2003/08/19/sci...
http://www.dermnetnz.org/hair-nails-s...
http://www.huffingtonpost.com/roger-f...
http://www.scientificamerican.com/art...

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