It is pretty easy to argue that the human brain is the most extraordinary thing in the known universe. But there is so much we don't know about the thing behind our eyes. Where do thoughts come from? Why do we dream? Why have our brains become 10% smaller over the past ten to twelve thousand years? Why do we get brain-freeze? Why!? Okay, that last one ... we do know the answer to. But there is much to learn - and much fun to be had - by taking a quick poke around the human brain (which would feel a bit like tofu, or firm jelly, if you did poke it).
