Braindance New Discoveries about Human Origins and Brain Evolution

"Falk explains how the act of walking upright permitted brain size to begin increasing dramatically in our early ancestors. Her "radiator theory" demonstrates that once they developed the ability to cool cranial blood through vascular changes associated with bi-pedalism, the constraint that limited brain size disappeared. And what did 2 million years of bigger brains produce? The last chapter summarizes Falk's ideas on human cognitive and conscious capacities for the future."--BOOK JACKET.