The University of Arizona Press

Saturday, April 7 at 12 p.m. and 2 p.m – Mark Nelson, one of the eight crew members locked in Biosphere 2 during its first closure experiment, will offer a compelling insider’s view of the dramatic story behind the mini-world in a two separate talks at Biosphere 2. In each lecture, Nelson will clear up common misconceptions about the 1991–1993 closure experiment and discuss the project’s implications for today’s global environmental challenges. Copies of his book Pushing Our Limit: Insights from Biosphere 2 will be available for purchase and signing.