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 Arizona desert stands a $200 million structure designed to replicate the entire Earth inside a sealed environment. Known as Biosphere 2, it contained a rainforest, an ocean, farmland, and ...
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