This course will provide an overview of the emerging law on climate change. The first half of the course will focus on international climate change law. It will consider the existing treaty regime and its limitations, and international-level efforts beyond the framework established under the United Nations Framework Convention on Climate Change. The second half of the course will then focus on domestic efforts to address climate change. It will begin with the national, consider the struggles in the United States to establish a national climate change policy and compare those with efforts in other jurisdictions. It will then turn to litigation and state and local efforts to address climate change in countries around the world, and consider their role in transnational efforts to address climate change.