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, ...

Welcome to Yuma, where the sun shines so much that even the cacti wear sunglasses. This southwestern Arizona city sits right on the California border, making it perfect for folks who want desert ...

As the holiday draws near, garden centers and grocery stores fill up with brightly blooming plants called Christmas cactus. But many of these colorful plants are actually a close cousin, the ...

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