Two Years and 20 Minutes Inside Biosphere 2
Enter Biosphere 2 with Robert and Julie and tour a technological wonder of the early 90s -- a 7,200,000 cubic foot Earth-in-miniature. Find out about this "Eden on top of an aircraft" and what went awry when eight people sealed themselves inside a biosphere for two years.
Image Caption: The Biosphere 2 research facility sits nestled in the foothills of the Catalina Mountains north of Tuscon, Arizona 25 September 1993. The eight inhabitants of the Biosphere will step out of the sealed structure early 26 September as they complete their two-year ecological research experiment. (Photo credit should read TIM ROBERTS/AFP/Getty Images)
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