Herman Daly was an ecological economist and Emeritus Professor at the University of Maryland, School of Public Policy. From 1988 to 1994, he was a Senior Economist in the Environment Department of the World Bank. Prior to that, he was a professor of economics at Louisiana State University, where he taught for twenty years. He has served as Ford Foundation Visiting Professor at the University of Ceará (Brazil), Research Associate at Yale University, Visiting Fellow at the Australian National University, and Senior Fulbright Lecturer in Brazil. He was co-founder and associate editor of the journal Ecological Economics. He wrote extensively on theorizing the steady-state economy and co-developed the Index of Sustainable Welfare. He held a PhD from Vanderbilt University.