Biosphere sights in USA

1. Biosphere 2

   • Arizona, USA
   • Sights › Biosphere

   Built to be completely sealed off from Biosphere 1 (that would be Earth), Biosphere 2 is a 3-acre campus of glass domes and pyramids containing five ecosystems: tropical ocean, mangrove wetlands, tropical rainforest, savannah and coastal fog desert. In 1991, eight biospherians were sealed inside for a two-year tour of duty from which they emerged thinner but in pretty fair shape. Although this experiment was ostensibly a prototype for self-sustaining space colonies, the privately funded endeavor was engulfed in controversy. Heavy criticism came after the dome leaked gases and was opened to allow a biospherian to emerge for medical treatment. After several changes in…

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