After years of training and several shorter stays in the structure, the crew entered Biosphere II on September 26, 1991. Whether or not they could survive without outside assistance would determine the project's success or failure.
Images courtesy of SGDHS students
[Earth: Biosphere I][Why
Biosphere II?] [Biosphere Plans]
[Grand Experiment] [What
Went Wrong?][Lessons for the Future]
Erin Walker and Diana Carroll