We post Jesse H. Ausubel, Iddo K. Wernick and Paul E. Waggoner, “Peak Farmland and the Prospects for Sparing Nature,†Population and Public Policy: Essays in Honor of Paul Demeny, eds. Geoffrey McNicoll, John Bongaarts, and Ethel P. Churchill, supplement to Population and Development Review, vol. 38. New York: Population Council, 2013. We also post Jesse’s short lecture, Peak Farmland, based on the paper. The lecture is part of the 18 December 2012 symposium at The Rockefeller University in celebration of Paul Demeny’s 80th Birthday and to mark his retirement as editor of Population and Development Review.