Peter V. Hodson is Professor Emeritus at Queen's University in Kingston, Ontario, Canada. His recent research includes the toxicity of crude oil and oil dispersants to fish embryos and the role of chemicals in the decline of the American eel in Lake Ontario. He has authored numerous peer-reviewed papers, books and technical reports related to the toxicity of chemicals to fish and contamination of the Great Lakes and rivers of Ontario, Quebec, and Alberta. He was President of the Society of Environmental Toxicology and Chemistry (SETAC) (1994-1995) and a member of its Board of Directors and the Board of the SETAC World Council (from 2004 to 2007), serving as the Chair of the World Council Science Committee. He was Program Chair of SETAC's 10th Annual Meeting in Toronto in 1989.

Pamela M. Welbourn is currently an Adjunct Professor in the School of Environmental Studies at Queen's University, Canada. She was on the faculty at the University of Toronto from 1970 to 1990, where she was Director of the Department of the Institute for Environmental Studies from 1984 to 1989. Welbourn has published numerous peer-reviewed papers and technical reports, and has co-authored the textbook Environmental Toxicology (Cambridge, 2002). She has consulted for the private and public sector and also for non-governmental organisations. She holds two teaching awards and currently gives guest lectures and public lectures on ecotoxicology.