Biosphere 2, an artificial ecosystem near Tucson that has alternated between serious science and kooky pseudoscience, has been sold to a housing-development firm, the Arizona Daily Star reported.

Biosphere 2 was a highly ambitious experiment to simulate a self-sustaining Mars colony in the Arizona desert. Eight men and women locked themselves inside for 2 years and experienced one incredible ...

UA officials at Biosphere 2 are working to mold the site of the controversial experiment into a premier scientific hub that gives the public unprecedented access to climate and ecological research.

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 ...

University administrators and researchers revealed their plans to begin research within the Biosphere 2 yesterday. Located near Oracle, the 3.14-acre Biosphere 2 facility will serve as a new ...

ORACLE, Ariz.—Opening the door to a glass pyramid, a visitor steps from the arid heat of Arizona into a coastal fog desert that stretches toward a savanna. A Lilliputian ocean laps against a rocky ...