Cooking as the Cradle of Civilization?

A few days ago---mentally exhausted from the end of the semester, which is just nuts---I had Bloggingheads.tv on in the background and saw an interview with Harvard anthropologist Richard Wrangham, who's hypothesis is that cooking is, essentially, the cradle of civilization. (This was before Kwai-Chang Cain accidentally offed himself, naked in a Bangkok hotel room, or any of the other subsequent distractions hit.) Now I see he's written a book, which is reviewed here. Basic thesis: Cooking made us who we are today. Huh. I'll have to pick up the book.