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.

The saguaro cactus is engineered for endurance in one of North America’s toughest environments. Rising up to 70 feet tall, with arms reaching skyward like desert sculptures, the cactus endures searing ...

Compared to most houseplants, Christmas cacti are a little different when it comes to feeding them. Because of how they grow and when they bloom, they need different types of fertilizer at different ...