TUCSON, Ariz. — Federal officials have concluded that Sonoran desert tortoises native to Arizona have a relatively stable population that doesn’t need protection from environmental threats but ...

Saguaro Park in southeastern Arizona, near Tucson, offers a landscape unlike anything you’ll see elsewhere. The park hosts ...

The Sonoran Desert is one of the largest deserts in North America. Credit: Unsplash/Jim Witkowski Many Americans might be surprised just how expansive and diverse the Sonoran Desert actually is. The ...

By analyzing the natural vibrations of a saguaro, scientists can study the cactus's insides without cutting them open.

The same climate changes known to be reshaping mountain ecosystems in places like the Alps and Yosemite also are driving alarming new patterns in the Sonoran Desert near Palm Springs, according to the ...

The Saguaro National Park is found in the Sonoran Desert. This Park is home to the largest species of cacti. Find out more about this interesting desert and the scientists studying there at the ...

As wild burro populations grow, they're putting native vegetation at risk, a new study shows, including the saguaro cactus.

From pinyon pines to ocotillos, plants in the Sonoran Desert are shifting where they grow in response to climate change, and many of the plants aren’t thriving in their new ranges, according to a new ...