Professor Emeritus, School of Public Policy, Georgia Institute of Technology

Professor of Philosophy, Integrative Biology, University of Texas at Austin

Professor of Philosophy, University of Sydney

Associate Professor, Charles University in Prague

Federal University of Grande Dourados / Universidade Federal da Grande Dourados

University of Oregon

Muséum National d'Histoire Naturelle

Macquarie University

Bielefeld University

Associate Professor of Philosophy, Hofstra University