Evolution of skin colors of the world

Jan 9, 2008 Full story: www.scientificblogging.com 62

Skin color results from the presence of the pigment melanin, an organic molecule that absorbs UV radiation and neutralizes free-radicals produced by UV radiation.

The more melanin, the more protection against UV radiation and the darker the skin. Hmm, if that is the case, why do not all humans have dark skin? Read more
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Since: Apr 07

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#69 Feb 9, 2012
It's all geek to me.
Gel Foam

New York, NY

#70 Feb 12, 2012
Geek is good

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