Two guest passes to visit University of Arizona Biosphere 2. Expires 11/01/2021.

Come tour one of the world's most unique facilities dedicated to the research and understanding of global scientific issues. The Biosphere 2 facility serves as a laboratory for controlled scientific studies, an arena for scientific discovery and discussion, and a far-reaching provider of public education. Its mission is to serve as a center for research, outreach, teaching and life-long learning about Earth, its living systems, and its place in the universe; to catalyze interdisciplinary thinking and understanding about Earth and its future; to be an adaptive tool for Earth education and outreach to industry, government, and the public; and to distill issues related to Earth systems planning and management for use by policymakers, students and the public.

https://biosphere2.org/