David Raubenheimer is the Leonard P. Ullman Professor of Nutritional Ecology in the School of Life and Environmental Sciences, and Nutrition Theme Leader in the Charles Perkins Centre at the University of Sydney. He previously spent 17 years at Oxford, initially as a doctoral student then as a Research Fellow and Departmental Lecturer in Zoology and Fellow of Magdalen College.

Stephen J. Simpson is Academic Director of the Charles Perkins Centre and Professor in the School of Life and Environmental Sciences at the University of Sydney. He spent 22 years at Oxford, where he became Professor of the Hope Entomological Collections in the Department of Zoology and a Fellow of Jesus College. He is a Fellow of the Royal Society of London and has appeared on TV on National Geographic and Animal Planet.

David and Stephen's academic partnership spans 30 years and between them they have authored 514 scientific journal articles and co-written The Nature of Nutrition (2012).