The book is about the origin and evolution of the atmosphere and the ocean. It spans an impressive number of concepts from radiative theory to geochemistry, from dating methods to climatic theories. Each chapter provides the necessary physics, chemistry and biology tools in such a way to facilitate easy interpretation. The chapters explore the solar system, the formation of the earth, the chemistry of the earths origin, the ancient atmosphere, the origin and evolution of the oceans, biogeochemical cycles, climate evolution, the present status of the atmosphere and oceans, as well as looking at the future of these. Each chapter includes an appendix of further explanation or calculations.