You may not need more mind bending after Horizon's done with you (at 9.00pm they're looking at exactly how big the Universe is, by creating a map of everything in existence...), but in the event you do, May is looking at Darwinism this week. You might relish cabbage about as much as a two month bout of chickenpox, but would you consider it as a leafy long lost relative? James May does, thanks to the genius of a man who changed the world, Charles Darwin. But exactly how does Darwin's famous theory of natural selection explain why we are all mutants and what war is actually good for?