ORACLE, Ariz. — Plopped in the Sonoran Desert, just outside Tucson, Ariz., sits a massive, multilevel greenhouse that's probably best known as the inspiration for a Pauly Shore movie. A slick, stepped ...

The University of Arizona is celebrating Earth Day and the 10th anniversary of UA research at Biosphere 2 on Saturday with a day of activities. Biosphere 2, 32540 S. Biosphere Rd. in Oracle, about 30 ...

The Biosphere was built in 1991 and the original Biosphere experiment lasted until 1993, exploring the interaction between humans and nature, as well as possible techniques that could be applied to ...

In its original state, Biosphere 2 housed an agricultural area (now utilized for experiments) and space for human habitation (now used for offices). The designers attempted to recreate an enclosed ...