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

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

After years of pressure and litigation from environmental groups, the U.S. Fish and Wildlife Service is sticking with a previous stance that the Sonoran desert tortoise doesn't need federal protection ...

Every mind-bending molecule in nature has an evolutionary origin; a defense against being eaten, a lure for pollinators, or ...

People who live along the border watched their aquifers recede as the border wall grew. Now they fear it will happen again.

The Desert Botanical Garden Plants & People of the Sonoran Desert Celebration, happening until Nov. 16, honors Arizona's Native American communities.

For those who love exploring abandoned places, this once-thriving resort in Arizona built around a hot spring is a great ...

The U.S. Fish and Wildlife Service has released an initial plan to restore the endangered Sonoyta mud turtle to its native ...

Scientists discovered how to study cactus movement without harm - by measuring the silent sway of these desert giants using ...

Tucson is tucked into the gorgeous Sonoran Desert, and this upscale neighborhood deftly blends natural beauty with artistic ...

Anita Antoninka dribbles a stream of water over tiny black dots on a small patch of Arizona desert. Although the soil at her feet appears dusty and lifeless, the ecologist promises there’s hidden life ...