Studies in mathematics and theoretical physics, University of Bielefeld, Germany; studies in biology, Ruhr-University Bochum, Germany; PhD in Behavioural Ecology. Heisenberg Professor, University of Oxford, UK. Chair of Zoology and Director of Institute, University of Bern, Switzerland. Director, Max Planck Institute for Evolutionary Biology, Plön, Germany. Professor, University of Kiel, Germany. Fellow: Hanse Institute for Advanced Study; German Academy of Sciences, Leopoldina. Interests: evolutionary biology, experimental economics, game theory, climate change, host-parasite coevolution.