One of the most promising technologies for solving the global environmental problems, artificial photosynthesis has seen many breakthroughs in various challenging approaches in recent years. Within decades, artificial photosynthesis can be expected to provide one of the most likely and realistic options to address the energy needs of society. This Faraday Discussion brings together current understanding of this rapidly advancing field. The book incorporates biological approaches, fundamental processes, molecular catalysts, visible light responsive semiconductor catalysts and inorganic assembly catalysts.