By Berkeley Hill (Imperial College, University of London, UK)
By Ernst Ulrich von Weizsacker, Oran R. Young (University of California Santa Barbara, USA), Matthias Finger, Marianne Beisheim
By Llewellyn, Claire, Roberts, Ley Honor, Collins Big Cat, Moon, Cliff
By Pearce, David
By Brian Child (University of Florida, Gainsville, USA), Helen Suich, Spenceley Anna (University of Johannesburg, South Africa)
By Tony Hare
By William M. Adams
By Richard Heinberg
By Richard Karban, Pamela Mikaela Huntzinger
By Jonathan E. Robins
By Martin W. Lewis
By Michael Mann
By Danielle Celermajer, Sophie Chao
By Ayana Elizabeth Johnson, Katharine K. Wilkinson
By Nora McKeon
By Mike McTee, Daniel J. Rice, Estelle Shuttleworth
By Robert G. Laughlin (The Proctor and Gamble Company)
By Seth Fletcher
By Gosling, Peter J.
By Thomas P. Tomich, Sonja B. Brodt, Randy A. Dahlgren, Kate M. Scow
By N.W.H. Allsop
By Michael B Abbott, W. Alan Price
By Kees d'Angremond, F. van Roode
By Brian H. Walker (Division of Wildlife and Ecology CSIRO, Australian Capital Territory), Will Steffen (Division of Wildlife and Ecology CSIRO
By Josep G. Canadell, Diane E. Pataki, Louis F. Pitelka
By T. M. Smith (University of Virginia), H. H. Shugart (University of Virginia), F. I. Woodward (University of Sheffield)
By John Harte