Policy Uncertainty and Risk presents a contribution to risk analysis and risk management in public policy and management at large. Special emphasis is put on the utilization of scientific knowledge by decision-makers in instances where knowledge in both spheres of science and administration is highly uncertain and contested. The book therefore contributes a model of science-practitioner interaction in a policy area of strong current relevance. The perspective is a realist constructivist one, which means that risk and policy are taken to be socially predicated insofar as we can choose and change the way we define and interact with its practices. It is realist insofar as we continually use such constructions to re-define and re-structure the world we live in. Although essentially theory-driven and conceptually oriented, the authors develop their argument for a new interpretation of policy-relevant science through a number of pressing case studies. These studies include the recent BSE/CJD crises in the UK, the introduction of Marine Protected Areas in Sweden, and the current practices surrounding risk management in corporate bodies. Drawing on empirical cases and theoretical explication, the book provides a number of suggestions as to how risk analysis and risk management may be more properly conceived of both from a practitioner as well as from an academic point of view.