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A look back at the early days of Biosphere II

A look back at the early days of Biosphere II

U.S. Secretary of Commerce Robert A. Mosbacher holds a sheaf of wheat grown in the Biosphere II project, which he toured Tuesday while attending a government-sponsored conference in Tucson on exports. The Biosphere is a greenhouse-like complex designed to duplicate the Earth's ecological sys…

February 28, 2013 12:00 am

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