| ARC ALS Analysis Team: Advanced life support bibliography and technical analyses at NASA Ames. |
| Biosphere 2 Center: Columbia University environmental research activities and education programs in the Arizona "living laboratory" originally built for an experiment to test the feasibility of humans living in a closed ecosystem. |
| International Space Exploration & Colonization Co: A non-profit organization developing technologies for colonizing space, including a biosphere-style closed ecological life support system (CELSS). |
| NC-State NSCORT: Gravitational biology, and links to other sites working under NASA's biology-related centers for research and training, including research on CELSS. |
| USU Crop Physiology Lab: Studies of crop production on the lunar surface; surviving the long lunar night. |
Classical
