Planet Earth. Four elements. One incredible story. This book takes children on a rollercoaster ride through history, geography, science and more to show how four elements - earth, fire, air and water - created the world and everything that exists today. Amazing facts, photography and illustrations bring our planet and its past to life in an exciting, engaging way. Written by Mark Brake, a science writer and broadcaster who's worked for NASA, the BBC and the National Science Museum of Thailand, and created in consultation with Dr Mike Goldsmith, a research scientist and writer with a PhD in astrophysics from Keele University in the UK.