ABC15 Phoenix, AZ. 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 ...

TUCSON, Ariz. (KGUN) — Beginning Thursday, April 27 at 9 a.m., a four-person crew given the moniker Inclusion 1 made their way inside a sealed, pressurized habitat within the Biosphere 2 compound.

Three decades after the original experiment, Biosphere 2 is still doing research that's the first of its kind. "There's no place where you can test on a large scale the response of complex ecosystems.

If I think about it too much, it feels like the Biosphere 2 ants are marching softly around my skin. One night, to feel a little free, I go for a run down the road to the highway.

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 ...