By Lovelock, James
By Titchmarsh, Alan
By David Attenborough
By Conroy, Czech, Litvinoff, Miles
By Girardet, Herbert
By Woodell, S.R.J.
By WOLFE, Art
By Packham, Chris, Bellamy, David
By van Veldhuizen, Laurens, Waters-Bayer, Anne, de Zeeuw, Henk
By Fairbrother, Nan
By Rivers, Patrick
By Goudie
By CARSON Rachel
By Descy, Jean-Pierre, Darchambeau, Francois, Schmid, Martin
By Wenner, Jann S.
By Dalton, Stephen, Smith, Bernardine Shirley, Dalton, Stephen
By Newby, Howard
By North, Richard
By Collard, Andree, Contrucci, Joyce
By Reader's Digest
By World Bank
By Allaby, Michael
By O'Hare, Prof Greg
By Wathern, Peter
By Frater, Mark
By Farmer, Andrew
By Barnaby, Dr. Frank, Perez de Cuellar, Javier
By Provokateur
By The United Nations Environment Programme, Canon Inc.
By Mackay, Richard