Leopold for the 21st Century: What Would He Say to the Yale FES Class of 2009? Moderated by Mary Evelyn Tucker. Discussion by Sally Collins, Clive Hamilton, Wes Jackson, Bruce Jennings, Gene Likens and Melina Shannon DiPietro. The Yale School of Forestry and Environmental Studies hosted a Symposium on April 3rd, 2009 honoring the centennial of the graduation of Aldo Leopold from the school and his acclaimed contributions to environmental conservation. Leopold became a leading and radical voice in American conservation, launching his land ethic in his celebrated book, “A Sand County Almanac.” The day-long symposium appraised the Leopold legacy, examined his relevance today, and explored how his land ethic might be reformulated for the global environmental and social challenges of the 21st century. This is a recording of the final plenary: Leopold for the 21st Century: What Would He Say to the Yale FES Class of 2009? The discussion was moderated by Mary Evelyn Tucker, Senior Lecturer and Research Scholar at Yale and Co-Founder of the Forum on Religion and Ecology. Discussants were: Sally Collins, Director of Office of Ecosystem Services & Markets, U.S. Department of Agriculture; Clive Hamilton, author of “Growth Fetish” and co-author of “Affluenza,” and Charles Sturt Professor of Public Ethics, Centre for Applied Philosophy and Public Ethics, Canberra, Australia; Wes Jackson, the Founder and President of the Land Institute and a MacArthur fellowship recipient; Bruce Jennings, Director of the Center for Humans and Nature in New York; Gene Likens, an ecologist and Founding Director and President Emeritus of the Institute of Ecosystem Studies; and Melina Shannon-DiPietro, Director of the Yale Sustainable Food Project.