If that biome is not healthy, it’s bad news for everyone. Arizona’s saguaro cactus, in particular, is a bellwether of our ...

This discovery highlights a hidden sensitivity in cacti. Even Arizona's mighty saguaros have struggled under recent heatwaves ...

This 92,867-acre park is dedicated to the largest cactus in the U.S., the saguaro (pronounced sa-WAH-ro), a universal symbol of the American West. The park is divided into two districts ...

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The saguaro cactus, a symbol of Arizona, faces growing threats from extreme weather events. Prolonged cold temperatures, in particular, could prove fatal for these iconic plants, raising concerns ...