This casebook is the authoritative introduction to public land and resources law. Case studies, case notes, and examples illustrate legal points with special attention to historical and social context. Thought-provoking questions facilitate classroom discussion. This new edition is completely updated, including thorough revisions of all chapters, considerable streamlining, and many new principal cases. It includes a new chapter on energy resources, which covers fossil fuel leasing as well as renewable sources of power. The new edition increases emphasis on climate change, marine conservation, hydraulic fracturing, solar and wind energy, and other topics of contemporary interest.