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Humans, the Cooking Apes - Review - NYTimes.com

“Catching Fire” is a plain-spoken and thoroughly gripping scientific essay that presents nothing less than a new theory of human evolution, one he calls “the cooking hypothesis,” one that Darwin (among others) simply missed. Apes began to morph into humans, and the species Homo erectus emerged some two million years ago, Mr. Wrangham argues, for one fundamental reason: We learned to tame fire and heat our food.

However, I'm not sure that we should be so keen on a theory if it means Gordon Ramsay is at the pinnacle of human evolution.

By the way, the book apparently does an excellent take down on the "raw food" movement:

He cites studies showing that a strict raw-foods diet cannot guarantee an adequate energy supply, and notes that, in one survey, 50 percent of the women on such a diet stopped menstruating. There is no way our human ancestors survived, much less reproduced, on it. He seems pleased to be able to report that raw diets make you urinate too often, and cause back and hip problems.