[Asheis]

There is much archeological evidence supporting the move of the human species from Africa to what is now the Middle East, and beyond. Not only that, but white skin is a proven MUTATION! We didn't crisp gently in the sun and start out white. Our skin got whiter as we moved to more northerly latitudes. Our bodies weren't getting enough vitamin D and thus had to mutate (evolve adaptively) to allow for more vitamin D to reach us when there is less sun. Lets please not have you take over this thread and make it a Christianity thread.

As for the OP, it seems unlikely (though certainly possible) that we'd subconsciously choose a black mate because of a warming global temperature. Although, it's certainly possible that white people who choose black people as mates are more likely to have children with more resistance to skin disease, and thus have their genes passed on.