The Ultimate series is a worldwide success because it offers readers an intriguing close-up view of their subject, with lots of opportunity for hands-on interaction using flaps, tabs, pop-ups and more! This look at Planet Earth is no exception, providing readers with fascinating facts and hours of discovery. No stone is left unturned as the book explores the geography of the earth--oceans, continents, formation of mountains and volcanoes--as well as its atmosphere, weather, and how to protect our world.