Conflict over natural resource usage has been ongoing in Tasmania for many years. There continues to be considerable community concern, disquiet and conflict over forestry management practices. In an analysis of his numerous community support projects the author saw an opportunity to involve community members in decisions relating to natural resource management. An interest in action research led him to propose a form of activism based on the ideas of post-normal science (PNS). The idea of the extended peer review aspect of post-normal science has been used in the development of a participative inquiry methodology known as community-based auditing (CBA). The contributions to theory and practice of PNS and environmental activism are thought to be significant. Several cases are briefly discussed.