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Biosphere 2 Climate Change

WATCH: What 'Biosphere 2' Is Being Used For 20 Years Later

AP | By ALLEN G. BREED | Posted 06.26.2011 | Green

ORACLE, Ariz. (AP) -- Jane Poynter and seven compatriots agreed to spend two years sealed inside a 3-acre terrarium in the Sonoran Desert. Their missi...