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Why are we different colors? « Why Evolution Is True

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Jul 20, 2010 - But when those populations colonized Australia, skin color got dark again. ... In low-light areas, skin evolved a lighter shade because we need fair amounts of .... This would speak against the idea that the dark skinned Africans ...

Then, as the presumably dark populations of humans moved into the Middle East and Europe, they evolved lighter skin color.  But when those populations colonized Australia, skin color got dark again. This almost certainly happened, too, when humans moved from northern Asia across the Bering Strait and down into the Americas: those populations that reached Central and South America likely re-evolved dark pigmentation.

 It’s curious, but understandable, that we know so very little about the evolution of population differences in our own species.  We do know a bit about skin color, but as for nose shape, hair texture, eye folds, and body build—the other traits that distinguish human populations—our ignorance is deep.

comment:-
and darwin thought out a theory with all that ignorance as quoted above,  some believe it  (mainly scientists with congenital a genesis of "god area in brain" !! )
 snake oil healers and other such charlatans  do a better job than darwin