“The brain’s roaring metabolism, possibly stimulated by early man’s invention of cooking, may be the main factor behind our most critical cognitive leap, new research suggests.”
Brain

About 2 million years ago, the human brain rapidly increased its mass until it was double the size of other primate brains.

“This happened because we started to eat better food, like eating more meat,” said researcher Philipp Khaitovich of the Partner Institute for Computational Biology in Shanghai.

- Robin Nixon @ LiveScience: Link.

Via Slashdot: Link.