Recently I've been curious about why the the different human races evolved to fit their climate, especially as far as the skin pigment is concerned. Does black skin really help well enough for the black people to generally evolve it based on natural selection? As in the people with darker skin generally survived and reproduced more while lighter skin people gradually. One fluke person has a bit blacker skin than the rest, and as a result he survives way better?:bugeye: This seems to suggest to me that our evolution is not only affected by natural selection, but also by the environment. Somehow the DNA for pigment makes the skin blacker and blacker because of the amount of sun its getting. I haven't heard of any of this, so I'm curious about how it happened. While we're on this subject, how long do homo sapiens as we know them date back to?