Record-high temperatures over the last few years in many parts of the United States have contributed to major stress on plants, animals, and humans. The extreme heat, coupled with a lack of rainfall, ...

Wild burros' appetite for native desert trees are endangering the health of Sonoran ecosystems, a new study found. By damaging cactuses and other vegetation, the burros also put themselves at risk, ...

Saguaro cactuses tower over Arizona's desert landscape, each year inching higher and higher for hundreds of years as they watch time pass. While these iconic Arizona cactuses are special for many ...

TUCSON, Ariz. (KGUN) — The saguaro cactuses, towering above visitors with its long, outstretched arms, is the icon of the southwest. Arizonans see them every day, a constant in the Sonoran desert ...

TUCSON, Ariz. (AP) — 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 ...

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 ...