John Grin is professor in policy sciences at the Department of Political Science of the University of Amsterdam. He is scientific director of the Amsterdam School of Social Science Research (ASSR), in which some 160 political scientists, sociologists and anthropologists cooperate in an interdisciplinary research programme. Jan Rotmans is one of the founders of Integrated Assessment (IA), and has outstanding experience in IA modeling, scenario-building, uncertainty management and transition management. Since 2004 he has been a full professor in Transitions and Transition Management at Erasmus University Rotterdam in the Netherlands, where he founded the DRIFT-institute: Dutch Research Institute For Transitions. He was vice-president of The Integrated Assessment Society (TIAS), and founder and director of the Dutch Knowledge Network on System Innovations and Transitions (KSI) and co-founder of the Urgenda Foundation. He is currently advisor of the Rotterdam Climate Initiative (RCI) and of the Rotterdam Stadshavens. Johan Schot is professor in social history of technology at the Eindhoven University of Technology. He is research director of the Foundation for the History of Technology, and of the Foundation for System Innovation and Transitions towards Sustainable Development. He is a fellow of the N.W. Posthumus Institute for Social and Economic history, and co-founder and chairing (with Ruth Oldenziel) the Tensions of Europe Collaborative Network and Research Program.