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 ...

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 ...

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 ...