Two-time Sibert Honor winner Don Brown has crafted a graphic history of the world\'s geology with a humble groundhog tour guide, leading readers through the planetÕs natural history and stages of the EarthÕs evolution, as well as the incredible natural forces constantly at work. Almost 14.5 billion years ago, it all started with a Big Bang and what began as a cloud of gas, dust, and rock eventually took shape and bloomed into a molten sphere. Battered by asteroid collisions, ice ages, and shifting tectonic plates, our fledgling planet finally pushed forth continents. But if you think Earth has calmed down since thenÑthink again! Geological activity such as earthquakes, volcanoes, and tsunamis continues to sculpt the earthÕs landscape, sometimes with terrible consequences for its inhabitants.