Biosphere 2 was built from 1987 to 1991 in Oracle, Arizona. In 1984 the site was purchased by Space Biospheres Ventures and, in 1991, the first Biosphere 2 crew quarantine mission began.

The venture, privately funded to start, is now run by the University of Arizona. And today, scientists there are quietly ...

Biosphere 2 is operated by the University of Arizona and remains a key hub for climate research. Tours are available every day from 9 a.m. - 4 p.m. with adult tickets starting at $29. Check it out ...

Biosphere 2 once hosted radical experiments for a self-sustaining ecosystem. During COVID-19, visitors can "tour" the living lab from their cars.

Biosphere 2, at 32540 S. Biosphere Road in Oracle, Arizona, is open every day (except Thanksgiving and Christmas) from 9 a.m. to 4 p.m. For more information, go to biosphere2.org.

In this July 31, 2015 photo, several of the main buildings of the Biosphere 2 complex, including the tropical rainforest, left, the technosphere, middle, and the south lung, right, are shown as a ...

Because of Biosphere 2, we now know what not to do on Mars and elsewhere. Don’t mix your farm area with your living space; keep it in a separate dome. Don’t rely on plants to supply all your ...

Biosphere 2’s rainforest is part of an experiment designed to shed light on how tropical ecosystems will fare under the stress of a hotter, drier shift in climate.

In 1991, Biosphere 2 captured the imagination of the world. A crew of eight "Biospherians" clad in vaguely "Star Trek"-like uniforms ceremoniously marched through an airlock and into their new ...

ORACLE, Ariz. — You won't be able to enter the rainforest on your next trip to Biosphere 2 in Oracle. It's closed because a drought is about to "hit" the rainforest. An extensive $2.1 million ...

Exploring Biosphere 2: Arizona’s most unique science experiment. Posted: February 18, 2025 | Last updated: April 29, 2025. Arizona is home to one of the most unique science experiments in the world.