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Biosphere 2: Building A New World

Eight scientists sealed themselves inside a giant greenhouse for two years as part of an ambitious ecological experiment. Linda Leigh was one of them.

An ambitious ecological experiment was launched in Arizona in September 1991. It aimed to see if human beings could produce everything they needed to survive - in a man-made environment. Rachael Gillman has been speaking to Linda Leigh, one of the eight scientists who spent two years sealed inside the giant greenhouse known as 'Biosphere 2'.

Photo credit: TIM ROBERTS/AFP/Getty Images

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9 minutes

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Wed 6 Sep 2017 07:50GMT

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