This casebook integrates a legal assessment of energy resources with economic and environmental issues, thereby encouraging thoughtful analysis of energy policy issues confronting the U.S. and the world. Historical and contemporary legal issues confronting a range of energy resources are surveyed, including water power, coal, oil and gas, electricity, and nuclear power. Particular attention is paid to the need to reduce consumption of imported oil by motor vehicles. The third edition of the book contains considerable material on problems presented by climate change, including legal issues confronting renewable power projects and various conservation measures. We believe that the material can be taught in many different variations, and we continue to teach it in a somewhat different order every time it is offered.