Biosphere Blues

Biosphere 2, the $150 million environmental experiment hyped as a "self- sustaining ecosystem," ended its trial run last fall but continues to be plagued by the sort of embarrassing incident that characterized its rocky two years in the media spotlight. Last week two former crew members -- both of whom had recently been suspended from their jobs with the project -- were arrested for breaking into the sealed Oracle, Arizona, enclosure to let outside air in.

Past highlights of the Biosphere:

Sept. 26, 1991

Four men and four women (dubbed "bionauts") enter Biosphere 2 to live with 3,800 species of plants...

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