The United States is a Party to the United Nations Framework Convention on Climate Change (UNFCCC), but not to its subsidiary Kyoto Protocol. The UNFCCC treaty was intended to address growing global concern about the possibility of human-induced global warming. As a Party, the United States has certain obligations under the treaty, and our behaviours in that context are likely to continue to draw attention on the world stage. In addition, the United States has exercised leadership for decades on climate change science, and has supported related partnerships, technology research and development, and other forms of international co-operation. This book provides a chronology, from a U.S. perspective, on more than two decades of multilateral negotiations aimed at addressing this global issue.