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Nature 435, 283-284 (19 May 2005) | doi:10.1038/435283a; Published online 18 May 2005
Evolutionary biology: Geography and skin colour
Jared Diamond1
Abstract
Human skin comes in many different shades. Recent studies of geographical differences in skin colour open up the subject scientifically by offering sophisticated accounts of the basis of this variation.
The most obvious — and most discussed — aspect of human geographical variability is skin colour. Most people would say that skin colour becomes darker towards the Equator to give more protection against tropical sunlight.
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