What is the theory of continental drift? What are polarity reversals? This title answers these questions and provides an understanding of the complexities that shaped our planet. It traces the formation of the universe and the planet, investigates the layers of the Earth, and explains the formation of mountains and bodies of water.

The award-winning science writers deliver captivating reading and easy understanding of the complexities that shape our planet as they answer nearly 1,000 of the most-often-asked questions. 125 photos, maps & charts.