‘Environmental Problems: Approaches to Understanding and Solution at Local, National and International Levels’. Public lecture to the National Parks Association of the ACT, 22 March, 1973.
‘Population, Pollution, Poverty and Prosperity’, ANZAAS, Adelaide, 23 June, 1973.
‘Comment on Treasury Economic Paper No. 2.’ Lecture to the Economics Society of Australia (ACT Branch), 19 June 1973.
‘The Importance of Port Phillip Bay.’ Lecture to a symposium on the Environmental Study of Port Phillip Bay, 8 September, 1973.
‘A Lateral Arabesque: from Virology to Environmental Studies.’ Address at A Tribute to Sir Macfarlane Burnet on the Occasion of his 75th Birthday, 3 September, 1974.
‘Strategies for Energy Conversion: Resources and Constraints.’ School Seminar on Growth, Research School of Social Sciences, October, 1974.
‘Environmental Impact Assessment: History, Rationale and Methodologies.’ Zoology Section, ANZAAS, January 1975.
‘Environmental Implications of Economic Development in the ESCAP Region.’ Address to MADE, June 1975.
‘The Last Five Years and the Future: Environmental Studies,’ Octagon Lecture, University of Western Australia. July 1975.
‘The Role of Science in Environmental Policy,’ Lecture to Australian Water and Waste Water Society, Canberra. July 1977.
Closing Lecture. International Symposium on Microbial Ecology, Dunedin, New Zealand, August 1977.
‘The Australian Environment,’ Lecture to National Environmental Education Conference, Lorne, Victoria. 14 November 1977.
‘Aggression and the Environment,’ Lecture to Second Austral-Asian Pacific Forensic Sciences Conference, Sydney, July 1978.
Introductory address to Symposium: ‘Fire and the Australian Biota’ on ‘The SCOPE Project: Ecological Effects of Fire’. 9 October, 1978.