Authors
| L. Hunter Lovins (1) | Larry David (1) | Lavelle, Marianne (1) |
| Layton, Lyndsey (1) | Learn-Andes, Jennifer (1) | Lefton, Rebecca (1) |
| Legere, Laura (1) | Lehmann, Evan (1) | Lehner, Peter (1) |
| Lenape Resources (1) | Lenat, Richard (1) | Lennon, Thomas (1) |
| Leonard, Abigail (1) | Leonard, Abby (1) | Levy, Marc (1) |
| Lewis, Jack (1) | Lippert, John (1) | Lombardi, Kristen (1) |
| Louisiana Environmental Action Network(LEAN) (1) | LoveCanal2020 (1) | Lovins, Amory B. (1) |
| Lustgarten, Abrahm (11) | Lynch, Colum (1) | |
