In 1859, Charles Darwin shocked the world with a radical theory - evolution by natural selection. One hundred and fifty years later, his theory still challenges some of our most precious beliefs. Introducing Evolution provides a step-by-step guide to 'Darwin's dangerous idea' and takes a fresh look at the often misunderstood concepts of natural selection and the selfish gene. Drawing on the latest findings from genetics, ecology and animal behaviour - as well as the work of best-selling science writers such as Richard Dawkins and Steven Pinker - this book reveals how the evidence in favour of evolutionary theory is stronger than ever. Did life first evolve on other planets? What's the advantage of having sex? Why do your parents look after you? And what good to a bird is half a wing? This book brings Darwin up-to-date with the latest scientific discoveries.