Biopshere 2, Arizona, USA: A World Within A World
In 1991, eight people entered Biosphere 2. It is 3,15 acre sealed glass facility in Oracle, Arizona. It had been built to mimic the environment of Earth (Biosphere 1) and contained a mini ocean, tropical rainforest, desert, wetland, and grassland. The idea was to determine, if the crew could thrive for two years in this…