Steven A. Cohen (born 1953 in Orange, New Jersey) is an American academic who has taught public management and environmental policy at Columbia University since 1981. He is the former executive director of Columbia University's Earth Institute and now serves as a senior advisor for the institute. He is a professor in the practice of public affairs at Columbia University's School of International and Public Affairs. He is also the director of the Master of Public Administration in Environmental Science and Policy in the School of International and Public Affairs and the director of the Master of Science in Sustainability Management in the School of Professional Studies. He served on the Environmental Protection Agency Administrator's National Advisory Council for Environmental Policy and Te