Tuscon Biosphere II

Friday, Feb 3 we didn't really have a destination in mind.  We started one place and then decided to go to the Biosphere II which we had heard about.

In the early 1990's, a group of scientists had isolated themselves in the totally self contained environment for 2 years, along with water, plants, etc.  They had to grow their own food, recycle all water and live without any outside resources. 

The facilities are still used for experiments on the impacts on plants of climate change.  It was an interesting day.