Emissions of CO₂ have come to be regarded as the main factor in climate change in recent years, and how to control them has become a pressing issue. The problem cannot simply be labeled a technological one, however, because it is deeply involved with social and economic issues. Since 2008, the Global Center of Excellence (COE) program titled “Energy Science in the Age of Global Warming—Toward a CO₂ Zero-Emission Energy System” has been held at Kyoto University, Japan. The program aims to establish an international education and research platform to foster educators, researchers, and policy makers who can develop technologies and propose policies toward a zero-emission society by the year 2100. Setting out a zero-emission technology roadmap, Global COE promotes socioeconomic studies of energy, the study of new technologies for renewable energies, and research in advanced nuclear energy. A compilation of the lectures and presentations from the first symposium of Global COE held at Kyoto University, this book is intended to provide the impetus for the establishment of low carbon energy science to bring about harmony between mankind and the environment.