Will Steffen is an Earth System scientist. He is a Councillor on the publicly-funded Climate Council of Australia that delivers independent expert information about climate change, an Emeritus Professor at the Australian National University (ANU); Canberra, a Senior Fellow at the Stockholm Resilience Centre, Sweden; and a Fellow at the Beijer Institute of Ecological Economics, Stockholm. He is also an Adjunct Professor at the University of Canberra, working with the Canberra Urban and Regional Futures (CURF) program, and is a member of the ACT Climate Change Council. He is chair of the jury for the Volvo Environment Prize; a member of the International Advisory Board for the Centre for Collective Action Research, Gothenburg University, Sweden; and a member of the Anthropocene Working Group of the Sub-committee on Quaternary Stratigraphy.
From 1998 to mid-2004, Steffen served as Executive Director of the International Geosphere-Biosphere Programme, based in Stockholm, Sweden. His research interests span a broad range within the fields of climate and Earth System science, with an emphasis on incorporation of human processes in Earth System modelling and analysis; and on sustainability and climate change.