By Danielle Celermajer
By Michael Mann
By Benjamin Kunkel, Lola Seaton
By Jonathan Symons
By Eugene Linden
By Henry Shue
By elizabeth cripps
By Ghassan Hage
By Jeremy Bugler
By A. Meharg
By Mike McTee, Daniel J. Rice, Estelle Shuttleworth
By Robert Clark (Emeritus Professor of Zoology, Emeritus Professor of Zoology, University of Newcastle upon Tyne)
By Phil Wells, Mandy Jetter
By Courtney White
By Sarah J. Morath (Wake Forest University, North Carolina)
By Dorothy Rowe
By Peter Brannen
By Richard Mackarness
By Thomas P. Tomich, Sonja B. Brodt, Randy A. Dahlgren, Kate M. Scow
By Patrick J Michaels
By Brian H. Walker (Division of Wildlife and Ecology CSIRO, Australian Capital Territory), Will Steffen (Division of Wildlife and Ecology CSIRO
By James Galloway (University of Virginia), Jerry Melillo
By A.J. Dietz, R. Ruben, A. Verhagen
By Josep G. Canadell, Diane E. Pataki, Louis F. Pitelka
By Steve Rayner, Elizabeth L. Malone, Malone Elizabeth, S. Rayner
By Timothy O'Riordan (University of East Anglia), Timothy Lenton (University of Exeter)
By Steve Rayner, Elizabeth L. Malone
By Eric F. Lambin, Helmut J. Geist
By William B. Cronin