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 ...

Arizona is home to one of the most unique science experiments in the world. Biosphere 2 is a groundbreaking research facility studying climate change and ecosystems inside an enclosed glass structure ...

Biosphere 2 started with eight scientists and a very ambitious experiment. Now, almost 35 years later, it's still being used for cutting-edge research. Scientists continue to use it to study Earth'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 ...

Biosphere 2 will continue to operate as one of the world’s most diverse controlled ecological systems thanks in part to a $30 million endowment from its co-founder. Philanthropist Edward P. Bass, who ...