Did Cooking in HotSprings Make Human’s Brainy?

H , roughly 2m years ago, early human ancestors evolved large brains and began fashioning relatively advanced stone tools, is one of the great mysteries of evolution. Dr Summons and his colleagues say the hot springs would have provided a convenient “pre-fire” means of cooking food. Nonetheless, fire would have offered a distinct advantage to humans, once they had mastered the art of controlling it since, unlike a hot spring, it is a portable resource.

Source: www.economist.com