Biosphere 2: the doors open. (lack of oxygen supply)(includes related information)

Science World | December 3, 1993| | Copyright

On September 26, four men and four women emerged from a glass-enclosed world in the Arizona desert for the first time in two years. It's no surprise that they took big gulps of Earth's air; the air inside their dome, called Biosphere 2, had lost quite a bit of life-giving oxygen.

Having enough oxygen for the Biospherians to breathe was a concern from the start. Biosphere 2 was supposed to be a self-sustaining world-within-a-world, a potential model for a colony in space (see SW 9/20/91, p. 11). Throughout its miniature Earthlike ecosystems--including an ocean, a desert, ...

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