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Biosphere 2 Project undertaken by Space Biosphere Ventures, a private ecological research firm funded by Edward P. Bass of Texas.  Sally Silverstone, one of the eight inhabitants of the Biosphere, holds ladybugs inside the greenhouse of Biosphere 2.  Biosphere 2 was a privately funded experiment, designed to investigate the way in which humans interact with a small self-sufficient ecological environment, and to look at possibilities for future planetary colonization.  1986