Almost 50 acres on Tucson's west side have been added to Saguaro National Park, just as the Trump administration reportedly ...

The city of Tucson, Arizona, sits on America’s southern border, surrounded by the cactus-strewn landscapes of the Sonoran ...

For advanced and beginner skydivers who want an exhilarating experience with gorgeous views, head to this underrated city ...

There is no shortage of spectacular natural features dotted around the Grand Canyon State, and you can add this scenic trail ...

A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from, including world-class observatories and six Dark Sky parks.

From Lowell Observatory to Kitt Peak to Mount Graham, here are the 11 best planetariums and observatories in Arizona and ...

The project uses $1.5 million from the Water Infrastructure Finance Authority of Arizona — that’s the state entity that ...

Saguaro National Park West will grow by 47 acres after the Trust for Public Land (TPL) acquired land in the foothills of the ...

The endangered Mount Graham red squirrel was classified as endangered in 1987, with population numbers ranging from 35 to 550 ...

Centro will sit on 10 acres in Nogales. It’s a remote operating center for South32 Hermosa, a zinc and manganese mine in the Patagonia Mountains. Some will be watching for its environmental impact as ...