The result, Planet Earth: A Beginner's Guide, is an expedition into the origins, evolution, and workings of our home planet in which John Gribbin does what he does best: takes 4.5 billion years of geological history and digs out the essential bits, from the physics of Newton and the geology of Wegener to the environmentalism of Lovelock. Along the journey, he uses stories from history and more current events to bring the science to a human level. Gribbin's introductory guidebook - very much a first step into geology and geography for the uninitiated - is filled with his lively voice and unique view, as he takes on the subject of the Earth from an astronomer's perspective.