- James E. Lovelock
- Ken Preston-Mafham
- John Horgan
- Scientific American
- Donella H. Meadows
- Rod Preston-Mafham
- National Academy of Sciences
- Ronald M. Nowak
- David McNally
- Anne H. Ehrlich
- Rick Bowers
- Institute of Medicine
- Paul Gilding
- Nora Bowers
- William H. Brock
- Russell A. Mittermeier
- Nigel Bonner
- W. Nigel Bonner
- Cristina Goettsch Mittermeier
- Norman Maclean