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[edit] NASA Human Waste Reclamation Bioreactor
In 1998, NASA announced it had built its own human waste reclamation bioreactor designed for the International Space Station and a manned Mars mission. Human urine and feces are input into one end of the reactor and pure oxygen and pure water and compost are output from the other end. The soil can be used for growing vegetables. The bioreactor also makes electricity at the same time. This bioreactor was featured on Scientific American Frontiers with Alan Alda in 1999.
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