LABORATORY SERIES. No.18. Abandoned greenhouse on the Biosphere 2 campus in Tuscon AZ, 2008. Biosphere 2 researchers sampled vast swaths of landscapes from Venezuela, French Guyana, Baja California, the Everglades, and the Yucatan, and sealed them inside the three acre enclosure along with eight humans from 1991-2. Photo Courtesy of Janette Kim.