Sidney Borowitz presents a concise, coherent narrative of the major sources of energy currently in use throughout the world, and explains in a cogent, jargon-free manner how these other sources of energy - nuclear, solar photovoltaics, biomass, wind, geothermal, fusion, hydrogen, and other more exotic sources - can be developed. Borowitz places these nonfossil fuel sources in an economic and scientific context so that the case for conservation and growth is thoroughly grounded in reality. Because energy touches on practically every aspect of our daily lives, this book presents a clear-eyed, even-handed explication of optimal solutions to our future energy needs.