The purpose of the present volume is to bridge the gap between risk sciences and decision support tools, in view of a better performance in governance. In particular, the main objectives are: to define the knowledge management methods and tools applicable in risk governance; to bring experience from the application of methods and tools available in various disciplines to other fields of risk governance; to determine the present and future needs for knowledge management tools in risk governance; and to promote the development and dissemination of such tools in a problem-solving context and for educational purposes. This collection of papers addresses questions, and provides tentative answers to issues such as: "do adequate tools for risk governance exist"; "are they available to decision-makers"; "what are the needs of the various stakeholders (i.e. planners, regulators, industry, public) for an effective risk management"; "what new tools have to be developed in order to cover these...