Hikers sometimes take a short side trip to the site of Bridal Wreath Falls — which may or may not be running depending on ...

As the trail wound its way into Arizona's Sky Islands, the region's biodiversity was on full display, as were the threats from rising temperatures.

Each side of Saguaro National Park offers a visitor center with restrooms and watering stations. Visitors will find maps, ...

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

Jeff Moore is a professor of geology and geophysics at the University of Utah. He uses field observations and monitoring data ...

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

Wild burros' appetite for native desert trees are endangering the health of Sonoran ecosystems, a new study found. By damaging cactuses and other vegetation, the burros also put themselves at risk, ...

Justin Stewart, an ecologist with the Society for the Protection of Underground Networks, collects a sample of soil containing mycorrhizal fungi taken at Saguaro National Park. Credit: Wyatt ...

Sun-soaked days and cool autumn evenings: Fall is the perfect time to visit Scottsdale, Arizona. From desert-chic boutiques to five-star resorts and dining, visitors come to this upscale enclave to be ...

Tanisha Tucker Lohse, of the Tohono Oʼodham Nation, picks a ripe saguaro cactus fruit during a harvest day in Saguaro National Park near Tucson, Arizona, this June. Credit: Ross D. Franklin/AP Photo ...