Jesse H. Ausubel the Director of the Program for the Human Environment at The Rockefeller University, has aimed for over three decades to elaborate the vision of a large, prosperous society that emits little or nothing harmful and spares large amounts of land and sea for nature. His work has spanned energy and materials, forests and farms, marine life, human population, and climate as well as engineering, earth, life, and social sciences. His 1996 essay and report, The Liberation of the Environment, presented many of the concepts, including land sparing, decarbonization, and dematerialization that have become central to environmental analysis.