On Nov 1st we drove up to explore the Bioshere 2 site, in Oracle, AZ. It is a 3.14 acre, approximately 2 1/2 football fields, structure originally built to be an artificial, materially closed ecological system, constructed between 1987-1991. From Sept 26, 1991 to Sept 26, 1993, eight people lived within the Bioshere 2 growing and producing their own foods. They all survived, however, they did have to pump up the oxygen level that dropped from 20% to 14%, which is equivalent to the oxygen available at 13,400 feet. Some scientists criticized the project. One view of Bioshere 2 stated that it was “the most exciting scientific project to be undertaken in the US since President Kennedy launched us toward the moon.”
