Biosphere 2

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University of Arizona Biosphere 2 is an American Earth system science research facility located in Oracle, Arizona. Its mission is to serve as a center for research, outreach, teaching, and lifelong learning about Earth, its living systems, and its place in the universe. It is a 3.14-acre (1.27-hectare) structure originally built to be an artificial, materially closed ecological system, or vivarium. It remains the largest closed ecological system ever created. Constructed between 1987 and 1991, Biosphere 2 planned to experiment with the viability of closed ecological systems to support and maintain human life in outer space as a substitute for Earth's biosphere. Biosphere 2 was designed to explore the web of interactions within life systems in a structure with different areas based on various biological biomes. In addition to the several biomes and living quarters for people, it hosted an agricultural area and a work space to study the interactions between humans, farming, technology and...

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