"What makes a fish a fish? Why do giraffes have such long necks? How can all living things, from plants, tigers, and mushrooms to dragonflies, octopuses, and humans, be related? Evolution holds the answers to these, and many more, questions about life on Earth. This book explores what evolution is, how it works, and who discovered its secrets. It shows the journey of life, from the very first, simple life forms that developed on Earth 3.8 billion years ago, all the way up to the incredible talking apes that inhabit the planet today, otherwise known as human beings!"--Back cover.