River Out of Eden - Richard Dawkins

Enlightening and brilliantly written as always. It got a bit technical in places and I had some trouble understanding bit of it, but as usual the emphasis is on principles and concepts, not details and numbers. He's a master of making science exciting and  inspirational; one or two early passages about how we're all descended from the tiny minority of the most successful ancestors really affected me. One thing I can't understand is how he hasn't devoted a book to the evolution of the human brain, and thus of ideals and values and ways of transcending the pitiless dumb indifference of natural selection (something he talks about a lot). This strikes me as almost as momentous an event as the origin of life itself.