/sci/ - Science & Math

Apparently National Geography predicts that (pic related) is what human beings will look like in 2050 (obv. it'll be different for males, but you get the idea).

I don't really give a shit about race mixing but I have one question in terms of species survival.

With diversity actually disappearing with race mixing, could the human race go extinct if there was say, another ice age because there aren't people who are adapted to the cold and have the physical adaptations to survive the cold? Or vice versa with heat?