Daniel H. Deudney is Professor of Political Science at Johns Hopkins University. He has published extensively on international theory, world political theory and contemporary global/planetary issues (environment, space, and nuclear). His books include Bounding Power: Republican Security Theory from the Polis to the Global Village (2007) and Dark Skies: Space Expansionism, Planetary Geopolitics and the Ends of Humanity (2020).

Stefan Pedersen is a political theorist and an Honorary Research Fellow at the School of Global Studies, University of Sussex. He was recently a Planetary Fellow in Residence at the Panel on Planetary Thinking, Justus Liebig University Giessen, and a Visiting Researcher at Sydney Environment Institute. He is interested in the history and future of planetary thought and politics.

Christine Winter (Ngati Kahungunu ki te Wairoa, Pakeha) is Senior Lecturer at University of Otago in environmental, climate change, multispecies and Indigenous politics. She has authored The Subjects of Intergenerational Justice: Indigenous Philosophy, the Environment and Relationships (2021), contributed to Institutionalising Multispecies Justice (2024), and, among much else, written 'Even A Grain of Sand Deserves Justice' for Noema.