This casebook examines climate change law using primary source materials, commentary and problem exercises. Climate science and policy are integrated into each section of the book. Reducing global and U.S. greenhouse gas emissions and adapting to the impacts of climate change receive approximately equal treatment. Mitigation is covered in chapters on the probable post-Kyoto regime, energy law and policy, national and state law, theory and practice of economic instruments (such as cap and trade and carbon taxes), and carbon sequestration. Adaptation is addressed in ecosystem, sectoral, regional, and human settlement chapters.