Author: Robert U Ayres, Robert Costanza, Jose Goldemberg, Marija D Ilic, Eberhard Jochem, Robert Kaufmann, Amory B Lovins, Mohan Munasinghe, R K Pachauri, Claudia Sheinbaum Pardo, Per Peterson, Lee Schipper, Margaret Slade, Vaclav Smil, Ernst Worrell, Cutler J. Cleveland