- Worldwatch Institute (9)
- Brown, Lester Russell, 1934- (6)
- Flavin, Christopher (4)
- Halweil, Brian (2)
- Postel, Sandra (2)
- Starke, Linda (2)
- Assadourian, Erik (1)
- Ayers, Jessica (1)
- Ayres, Ed (1)
- Bright, Chris, 1955- (1)
- Chawla, Ambika (1)
- Engelman, Robert (1)
- French, Hilary (1)
- Gardner, Gary (1)
- Gardner, Gary T., 1958- (1)
- Mastny, Lisa (1)
- Prugh, Thomas (1)
- Renner, Michael (1)
- Renner, Michael, 1957- (1)
- Sawin, Janet (1)
- Wolf, Edward C. (1)
- エコ・フォーラム21世紀 (1)
- ワールドウォッチ研究所 (1)
- 山藤, 泰(1938-) (1)
- 本田, 幸雄(1942-) (1)
- 松下, 和夫(1948-) (1)
- 福岡, 克也(1930-) (1)
- 飯嶋, 孝史 (1)