By analyzing the natural vibrations of a saguaro, scientists can study the cactus's insides without cutting them open.

Deep-freezing weather in mid-January affected some native and non-native plants - but only time will tell if any saguaros or other desert dwellers will die from cold damage. "The more tropical ...

Towering structures must be able to bend and sway when subjected to the forces of wind and ground movement, or they will topple, whether it's a building, a geological formation, tree—or even a cactus.

TUCSON — Cousins Tanisha Tucker Lohse and Maria Francisco set off from their desert camp around dawn on most early summer days, in search of ripe fruit from the towering saguaro cactus, an icon of the ...