"What is the Right Size?" Address to the Royal Canadian Institute, Toronto, March 1978.
"Appropriate Technology: Definition by Example", International Pugwash Symposium on Social Values and Technologies, Choice in an International Context, June 1978.
Keynote Address, Technological Innovation Management Education for Canada Workshop, York University, September 1979.
"Science and the New Technological Paradigm", Opening Address, Science Education Conference "Challenge of the 80's", Mount Allison U., August 1980.
"The Effect of Technological Choice on International Stability in the Developing World", Proceedings of the 31st Pugwash Conference on Science and World Affairs, "The Search for Peace in a World in Crisis", August 1981.
"Small Scale Developments" Seventh Canadian National Energy Forum Halifax, February 1983.
"Small is Profitable", Address to the Vancouver Institute, February 1983.
"Socio-Economic Disparities in the Information Age", University of Edinburgh Seminar on Technology, Innovation & Social Change, October 1984.
"Technological Innovation for a Sustainable Society" Conference on "Preparing for a Sustainable Society", Toronto, June 1991.
"The Small Islands Information Network" Islands 2000 Conference Sicily, May 1992.
"What the University of the World Can Do for Education on Environment and Development Around the Globe" World Congress for Education and Communication on Environment and Development, Toronto, October 1992.
"Information Networks for the Sustainable Development of Small Islands" IFIP Working Group 9.4 Conference on "The Impact of Informatics on Society: Key Issues for Developing Countries", Havana Cuba, February 1994.
"A Network to Support the Sustainable Development of Small Island Developing States (SIDSnet)" Islands of the World IV Conference, Okinawa. June 1994.
"Progress Report on the Small Islands Information Network" Islands 94 Symposium "Global Networking of Island Communities" Okinawa, 25 June 1994.