The author of the bestselling Your Inner Fish gives us a brilliant, up-to-date account of the great transformations in the history of life on Earth. Over billions of years, fish evolved to walk on land, reptiles transformed into birds that fly, and ape-like primates changed into humans who walk on two legs, talk and write. This is a story full of surprises. If you think that feathers arose to help animals fly, or lungs to help them walk on land, you'd be in good company. You'd also be entirely wrong. Neil Shubin delves deep into the mystery of life, the ongoing revolutions in our understanding of how we got here, and brings us closer to answering one of the great questions - was life on earth inevitable...or was it all an accident?