This book represents the work of a number of people, and we would like to acknowledge them here. First, we would like to thank Columbia University, where we all work, and President Lee Bollinger and Provost John Coatsworth. In particular, we'd also like to thank the School of International and Public Affairs (SIPA), under the leadership of Dean Merit E. Janow, as well as the Earth Institute, under the direction of Jeffrey Sachs. We would like to thank the staff of the Research Program on Sustainability Policy and Management, including Satyajit Bose, Dong Guo, Kelsie DeFrancia, and faculty advisory council members Michael Gerrard and Tanya Heikkila. We would also like to thank the research and editing efforts of our team of student and staff assistants that helped tremendously in the making of this book, including Earth Institute staff Hayley Martinez and Yasmin Williams, and research assistants Jacob Kaden, Kyle Marsh, and Rachael Lubitz.

Steve Cohen would also like to acknowledge a number of people that have taught him about public and environmental policy, especially the late Lester Milbrath, and Sheldon Kamieniecki, Marc Tipermas, Tony Khater, Bob O'Connor, and Tom Ingersoll. Steve would like to thank his family; his wife, Donna Fishman; his children, Gabriella Rose and Ariel Mariah; his parents, Marvin and Shirley; his brother, Robby; and his sisters, Judith and Myra.

Bill Eimicke thanks former New York City Mayor Ed Koch and former New York Governor Mario Cuomo; New York Governor Andrew Cuomo; FDNY Commissioner Salvatore Cassano; and Columbia University Provost John Coatsworth. Bill is grateful for the support and advice of his wife, Karen Murphy; his daughter, Annemarie; his dog, Balsam; and his horses, Clef, Just Foxy, and Golden Hare; and donkey, Paco.

Alison Miller would like to thank her co-authors—Steve Cohen, professor, mentor, boss, and colleague, and William Eimicke, colleague and advisor. Alison also acknowledges the other teachers and mentors who have had outsized impacts on her academic and professional careers: Matthew Hoffmann, whose undergraduate course on global environmental governance first led her on the path of environmental policy; Andrea Bollyky, Michael Klein, and Louise Rosen. She thanks her colleagues, past and present: Allison Ladue, Sarah Tweedie, Natalie Unwin-Kuruneri, Alix Schroder, Annie Hunt, Courtney Small, Davida Heller, and all of her professors and classmates in the MPA ESP program, who helped shaped her understanding of the world. She is ever grateful for the constant love and support of her family: Carol, Gary, Richard, Jaclyn, and Jonathan.