Biosphere 2, a massive indoor simulation of the Earth’s ecosystem in southern Arizona, is one of the most famous — and ...

Add Yahoo as a preferred source to see more of our stories on Google. ORACLE, AZ — Four dozen Sonoyta pupfish are now swimming beneath the towering glass pyramids of the University of Arizona’s ...

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 rare Sonoyta pupfish were introduced into a desert river habitat inside the huge Biosphere 2 structure near Tucson. The dish are native to Quitobaquito Springs near the Arizona-Mexico border, but ...

The rainforest is less diverse now than it was when Biosphere 2 first started its experiments, said rainforest research specialist Jason de Leeuw. There aren't many animals beyond the ants and a few ...