The Brain as We See It

Albany.edu - The Higher Primate's Brain and Climate

Please don't use knowledge to confirm your foolish beliefs of genetic superiority...we have intermixed among ourselves so much those benefits have fallen away (do take notice of your socialization though...). However, do take notice that as we move about in a world that is always changing our bodies and our abilities to live within it change.

In addition to the impact of global cooling, "By paying close attention to the geographic origin of each of the fossilized skulls," said Gallup, "it became clear that seasonal variation in climate may also have been an important selective force behind the evolution of human cranial capacity. Specifically, we found that as the distance from the equator increased, north or south, so did brain size."