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 ...

Facing terminal cancer, retired veterinarian Maggie Wagner went looking for a legacy. She found it in a garden of succulents and cactus.

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 ...

Propagating a Thanksgiving cactus is an easy, budget-friendly way to multiply your favorite winter-blooming houseplant. You can grow new plants by rooting cuttings in soil or water, or by dividing a ...