The objectives of the Nuclear Waste Management Organization (NWMO) are to engage the broader Canadian public in discussions on the management of nuclear waste. In 2003, NWMO commissioned a series of concept papers on risk and uncertainty, sustainable development, the precautionary approach and adaptive management. The paper on risk and uncertainty suggested that "because choosing successful policies for long-term management of waste and spent nuclear fuel presents a case of uncertainty, not risk or certainty, it is a decision for stakeholders and citizens, as well as experts." Also discussed were six types of uncertainty—framing uncertainty; modeling uncertainty; inference-option uncertainty; statistical or parameter uncertainty; decision-theoretic uncertainty; and, policy-implementation uncertainty.  Seven strategies were developed for alleviating and making transparent scientific/technical uncertainty and ten strategies for dealing with social/ethical uncertainty. In order to spark discussion, a comment on this paper was commissioned whose author put forward a somewhat different notion of uncertainty, risk and their interrelationship. Of all of the concept papers, the risk and uncertainty paper has stimulated the most commentary, particularly from individuals from the nuclear industry.” This website has been developed for your background information leading into a series of real-time e-Dialogues to engage a diverse group of Canadians from across the country, it is designed to be independent and does not reflect the views of the NMWO.