My walkthrough tour video of Biosphere 2 in Oracle, AZ. (Background information below) Biosphere 2 is a 3.15-acre (12700 m2)[1] structure originally built to be a man-made, materially-closed ecological system in Oracle, Arizona (USA) by Space Biosphere Ventures. Constructed between 1987 and 1991, it was used to explore the complex web of interactions within life systems in a structure that included five areas based on natural biomes and an agricultural area and human living/working space to study the interactions between humans, farming and technology with the rest of nature. It also explored the possible use of closed biospheres in space colonization, and allowed the study and manipulation of a biosphere without harming Earth’s. The name comes from Earths biosphere, Biosphere 1, Earth’s life system and the only biosphere currently known. At a size comparable to two and a half football fields, it remains the largest closed system ever created. The sealed nature of the structure allowed scientists to monitor the continually changing chemistry of the air, water and soil contained within. Health of the human crew was monitored by a medical doctor inside and an outside medical team. Biosphere 2 contained representative biomes: a 1900 square meter rainforest, an 850 square meter ocean with a coral reef, a 450 square meter mangrove wetlands, a 1300 square meter savannah grassland, a 1400 square meter fog desert, a 2500 square meter agricultural system, a human habitat, and a …
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