Ortwin Renn is Professor and Chair of Environmental Sociology and Technology Assessment at Stuttgart University, Germany. He directs the Stuttgart Research Center for Risk and Innovation at Stuttgart University and the non-profit company DIALOGIK, a research institute for the investigation of communication and participation processes in environmental policy making. Renn is primarily interested in risk governance, political participation and technology assessment. He has published more than 30 books and 250 articles, most prominently the monograph Risk Governance (2008).