Noel Castree is Professor of Geography at Manchester University. Editor or author of Remaking Reality (1998), Social Nature (2001), and Nature (2005), his main research and teaching interests are in the political economy of environmental change.

David Demeritt is a Reader in Geography at King's College, London. He has published many essays on the politics and practice of environmental science and theories of society-nature relations more generally.

Diana Liverman is Director of the Environmental Change Institute and Professor of Environmental Science in the School of Feography and Environment at Oxford University. She has published widely on environmental change and policy.

Bruce Rhoads is Professor and Chair of the Department of Geography, University of Illinois at Urbana-Champaign, and is primarily interested in the fluvial dynamics of streams.