Since 1960, there have been two major theoretical advances in the Earth sciences: the theory of plate tectonics and the advent of Earth systems science. Stephen Marshak\'s beautifully written and illustrated new text is the first to incorporate both of these discoveries from its inception. Earth: Portrait of a Planet covers all the topics of a traditional physical geology course, but also includes such topics as historical geology, environmental geology, the Earth's resources, the oceans and atmosphere, cosmology, and global change. What results is a fascinating, comprehensive ?portrait? of planet Earth.Marshak, Stephen is the author of 'Earth Portrait of a Planet' with ISBN 9780393974232 and ISBN 0393974235.