By Michael Braungart, William McDonough
By Dr Alain Gachet
By Sir Terence Conran
By Frank Perry, Lotte Moeller
By Gary S. Silverman, Philip E. Rakita
By W Hoyle, Mike Lancaster (Chemical Industries Association, UK)
By Peter H. Kahn
By Sandra Harding
By P A CARSON
By Koichi Mikami (Tokyo Institute of Technology)
By Yasmin Ali
By Peter Baccini, Paul H. Brunner (Vienna University of Technology)
By Radislav A. Potyrailo, Wilhelm F. Maier
By Stephen Ward
By Prof Timothy O'Riordan
By Peter J. Harrington
By Ben Derudder, Jonathan V. Beaverstock, Frank Witlox
By Dorothy Merritts, etc., Andrew deWet (Franklin Marshall College, USA), Kirsten Menking (Vassar College
By Brian Doherty, Marius de Geus
By G. Miller (President, Earth Education and Research)
By A. J. Parsons, P.G. Knight
By John McCarthy
By Ilse Koehler-Rollefson, Fred Provenza
By Robert T. Watson, Marufu C. Zinyowera, Richard H. Moss
By Ted Kitchen
By Mike Tooley (Brooklands College, UK), Lloyd Dingle
By Sabrina Mahfouz
By Gerald Foley, etc.
By Manfred Binder, Martin Janicke, Ulrich Petschow
By F. Coenen, D. Huitema, Laurence J. O'Toole Jr.