Is the Earth Sustainable? -- Knowing Energy -- The Limit of Energy Efficiency -- Energy Conservation in Daily Life -- Making Things and Recycling Things -- of Renewable Energy -- How to Make a Sustainable Earth -- How Will Technology and Society Work Together?. Hiroshi Komiyama's "Vision 2050" is a plan for paving a road to global sustainability. It lays out a path to a sustainable future for humanity that could realistically be achieved by 2050 through the application of science and technology. A prominent Japanese academic and leader in global sustainability, Komiyama draws upon realistic assumptions and solid scientific concepts to create a vision that makes the living standards enjoyed by developed countries today possible for all people by 2050. "Vision 2050" is built upon three fundamental principles - increased energy efficiency, recycling, and development of renewable energy sources - and the book argues for the technological potential of all three. Specifically, Komiyama envisions a three-fold increase in overall energy efficiency and a doubling of renewable energy resources by 2050. "Vision 2050: Roadmap for a Sustainable Earth" is written to address the concerned citizen as well as to inspire an exchange of ideas among experts, policy makers, industrial leaders, and the general public.