Watch the Video:
http://www.ted.com/talks/lang/en/nina_jablonski_breaks_the_illusion_of_skin_color.html
Map of UV Exposure on Earth's Surface:
Map of average human skin color
And read her paper:
http://www.direct-ms.org/pdf/VitDGenScience/Jablonski%202002%20Skin%20color.pdf
Skin deep
Abstract:
Throughout the world, human skin color has evolved to be dark enough to prevent sunlight from
destroying the nutrient folate but light enough to foster the production of vitamin D. Recent
epidemiological and physiological evidence suggests that the worldwide pattern of human skin color
is the product of natural selection acting to regulate the effects of the sun's ultraviolet radiation on
key nutrients crucial to reproductive success.
From: Scientific American; New York; Oct 2002; Nina G Jablonski;George Chaplin; Volume: 287; Issue: 4
Start Page: 74-81; ISSN: 00368733; Subject Terms: Ultraviolet radiation; Skin Color Evolution
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