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 TUCSON, ARIZ. (AP) - The landmark glass terrarium known as Biosphere 2, which was built as a self-sustaining environment for humans 20 years ago, and the 1,650 acres surrounding the research site were sold to a home developer for $50 million.
Texas billionaire Ed Bass spent more than $200 million building Biosphere 2 near Oracle. The site attracted global attention in 1991, when eight people were sealed inside to conduct a two-year experiment in self-sufficiency.
The buyer, CDO Ranching & Development, L.P., said the 3.1 acre building will remain open to researchers and tours for now. The sale was announced Monday by Jerry A. Hawkins, vice president of real estate firm CB Richard Ellis Tucson.
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