David Orr is the Paul Sears Distinguished Professor of Environmental Studies and Politics at Oberlin College in Ohio. His career as a scholar, teacher, writer, speaker, and entrepreneur spans fields as diverse as environment and politics, environmental education, campus greening, green building, ecological design, and climate change. He is the author of five books and co-editor of three others. Ecological Literacy (1992) is widely read and used in hundreds of colleges and universities. Earth in Mind (1994/2004) is praised by people as diverse as biologist E. O. Wilson and writer, poet, and farmer, Wendell Berry. For over twenty years, Orr has calling for higher education to awaken to sustainability and climate issues. In 1987, he organized studies of energy, water, and materials use on several college campuses that helped launch the green campus movement. In 1996, he organized the effort to design the first substantially green building on a U.S. college campus. In an influential article in the Chronicle of Higher Education in 2000, Orr proposed the goal of carbon neutrality for colleges and universities and organized and funded an effort to define a carbon neutral plan for his own campus at Oberlin, and now hundreds of colleges and universities have made that pledge.