From 1991 – 1993 scientists embarked on a bold mission to replicate the world’s biological systems in an enclosed facility called Biosphere II. The Arizona-based experiment included a crew that lived in the “closed world” for two years. The crew grew their own food, did experiments, learned how to function together (that part of the mission did not go so well) and they tried to replicate the natural environment of plants and the other building blocks of life. One of …