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WikiPedia: Biosphere 2 http://www.azstarnet.com/sn/hourlyupdate/189171 http://www.bio2.com/ http://www.msnbc.msn.com/id/19055888 http://patft.uspto.gov/netacgi/nph-Parser?patentnu... http://www.biospherics.org/ https://archive.org/details/humanexperimentt00poyn https://web.archive.org/web/20061220012010/http://... https://commons.wikimedia.org/wiki/Category:Biosph...