Re: Biosphere 2 - Oracle, AZ Biosphere's lessons. Living inside the glass enclosure known as Biosphere 2 for two years wasn't easy. If its eight pioneering residents wanted pizza, they had to grow their own wheat and milk a goat for cheese. They contended with thinning air, insufficient food, constant work and, worst of all, each other. [The Philadelphia Inquirer Online - Front Page]
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