Matt McDonald is a Reader in International Relations in the School of Political Science and International Studies at the University of Queensland. His research is in the area of critical theoretical approaches to security, and their application to environmental change and Australian foreign and security policy. He is the author of Security, the Environment and Emancipation (Routledge 2012) and co-author (with Anthony Burke and Katrina Lee-Koo) of Ethics and Global Security (Routledge 2014).

Audra Mitchell is the CIGI Chair in Global Governance and Ethics and Associate Professor at the Balsillie School of International Affairs, Wilfrid Laurier University, Canada. She has published widely in the areas of posthumanist IR, global ethics, large-scale harm, cosmology and violence. Her current research explores the ethics of global extinction.