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 ...

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

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

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.

Saguaro National Park may very well be one of the easiest national parks to access, since it’s considered an urban park geographically separated by Tucson, Arizona. The Rincon Mountain District (RMD) ...

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 ...

“Is Tucson in Arizona?” John Lennon asked Paul McCartney ... really jumped up a lot in the last few years has been the high mountains,” said Kevin Kaplan, chief operating officer of Long ...

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 ...