The venture, privately funded to start, is now run by the University of Arizona. And today, scientists there are quietly ...

The venture, privately funded to start, is now run by the University of Arizona. And today, scientists there are quietly plugging away at research they hope will help us all adapt to the Biosphere ...

Biosphere 2 was intended to operate for a century, but when the biospherians entered the facility in September of 1991, "it was such a vast experiment that none of the eight of us had any ...

It's a living, breathing laboratory called Biosphere 2. Researchers created the facility in the late '80s and early '90s to see if humans could survive in an artificial, self-sustaining ecosystem.

Biosphere 2's ocean ecosystem contains 700,000 gallons of sea water brought in from the California coast — more than an typical Olympic-size swimming pool. Scientists suit up in scuba gear to explore ...

Inside Biosphere 2's giant glass pyramid, tropical trees stretch 80 feet above the forest floor. Crazy ants, so named because of their erratic movements, scurry below.