In Arizona, nature is diverse and dramatic. The state's Tonto Natural Bridge State Park is home to the world's largest natural travertine bridge, where visitors can hike and explore its unparalleled ...

Most days, you’ll find Joost van Haren tromping through Arizona’s only tropical rainforest. An assistant research professor at the UA, van Haren works in the rainforest at Biosphere 2—in the middle of ...

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 ...

Standing atop Biosphere 2’s iconic rooftop dressed in the same spacesuit George Clooney wore in the 2013 film “Gravity,” YouTube personality MrBeast shared a piece of Southern Arizona with the world ...

ORACLE, AZ — 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 ...

Nestled in the foothills of the Catalina Mountains, around 31 miles from Tucson, there exists an oasis; a collection of environments one would never anticipate to exist in the scorched Arizona desert.

Learn about UNESCO-designated biosphere reserves and why you should visit them.

TUCSON, Ariz. — As part of our summer series, One Tank Trips, the crew of Good Morning Tucson is taking you to places on much less than a tank of gas. April Madison headed north of Tucson to Biosphere ...

The University of Arizona-owned Biosphere 2 introduced the critically endangered Sonoyta pupfish into a stream inside of its desert biome Friday. Once found throughout the region, the pupfish can now ...

The Amazon-PIRE project will conduct experiments and train students within Biosphere 2's tropical forest biome, pictured here. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of ...