i think there is truth to some race are evolving more rapidly then other race. I doubt that fact will ever be public but environment does play a huge part on peoples evolution. Its all very complex, no group of race is exactly the same. Many factors in each persons life determines the difference. But again there is truth to some race can evolve faster then others. Like how I think living in tribes are a way to slow down evolution, but to live in big cities and especially discovering the world like a scientist can increase the pace of evolution.