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 ...

In the early 1990s, Biosphere 2, a series of glass domes in the Arizona desert, was famously occupied by eight residents who attempted to tend to a closed ecosystem without any resources from the ...

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 ...

The Cherni Osam River watershed, located within the breathtaking Central Balkan Biosphere Reserve in Bulgaria, has long provided vital resources for nearby communities - supplying drinking water and ...