Arizona’s iconic saguaro cactuses seem like immobile sentinels standing watch over the Sonoran desert landscape. But beneath their still, spiny exteriors, these towering cactuses are actually ...

You might have noticed our beloved saguaros have been sporting new hairdos lately. No, they're not growing baby avocados at the crown of their heads. These bulbous green nubs are the buds that bloom ...

Don Swann, biologist with the National Park Service, left, and Gabe León with American Conservation Experience, take pictures at Saguaro National Park West as part of an effort to track cactus flowers ...

There is several things to do at Saguaro National Park located in Tucson Arizona. Beyond activities, the park itself pro ...

While the Grand Canyon may be Arizona’s most well-known national park, it’s not the only one worth a visit. With 22 total National Park Service monuments, parks, recreation areas, historic sites, and ...

Geologist Jeff Moore was visiting family in Tucson when he got the idea of adapting tools used to measure earthquakes for the study of saguaro cactuses. Studying the inner structure of a cactus ...