In the late 1980s, I learned through newspaper articles, that a large, airtight enclosure was being constructed outside Tucson, Arizona. Its purpose was to house eight “Biospherians” who would be self sufficient, in a closed system, for a period of two years. They would grow their own food and dispose of their wastes. There would be no imports or exports of any material. I puzzled as to how the composition of the air in this enclosure would be managed. Plants produce O2 and consume CO2. Bacteria in the soil consume O2 and release CO2....

First Page Preview

First page PDF preview
You do not currently have access to this article.