He is an Executive Member of the Ontario Network for Sustainable Energy Policy, and he has been Director of Research for the Ontario Royal Commission on Asbestos, Member of the Diesel Impact Study Committee for the U.S. National Academy of Science, Member of the Science Advisory Board for the International Joint Commission, Member of the Biotechnology and Sustainable Development Expert Working Group of the Canadian Biotechnology Advisory Group, Member of the Advisory Council on Occupational Health and Occupational Safety for the Ontario Ministry of Labour, Member of the Transportation and Climate Change Collaborative of the Ontario Round Table on Environment and the Economy, and Chairman of the Socioeconomic Panel, Royal Society Peer Review of Canadian Federal Research on Long Range Transport of Airborne Pollutants.

His books include Current Affairs: Perspectives on Electricity Policy for Ontario (with Doug Reeve and Bryan Karney); Reducing, Reusing, and Recycling: Packaging Waste Policy in Canada (with M.J. Hare); Exploring the Domain of Accident Law: Taking the Facts Seriously (with David Duff and Michael Trebilcock); Controlling Asbestos in Buildings: An Economic Investigation; The Regulation of Quality: Products, Services, Workplaces, the Environment; The Regulation of Quality: Products, Services, Workplaces, the Environment; Economic Analysis of Environmental Policies (with C. Everson and W. Sims); Economics and Public Policy: The Automobile Pollution Case; and Economic Analysis for Transport Choice (with Paul O. Roberts).

A contributor to thirty scholarly volumes, he has authored almost seventy articles and reviews in scholarly journals and proceedings.