Today we drove about 45 miles north into the desert to visit Biosphere 2. No, there was no Biosphere 1. The earth is the original biosphere! Do you remember this domed community? Eight people lived inside and raised their own food and ran the whole place for two years. No going out and coming back in. Two years inside. It was quite an undertaking. The University of Arizona now runs it, and there is extensive research going on under those glass panels.