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, ...

Add Yahoo as a preferred source to see more of our stories on Google. Papago Park is a beloved destination in metro Phoenix, with thousands of people flocking to the park each year to enjoy nature in ...

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 ...

Catalina State Park officials in Arizona believe powerful monsoon rains brought it down last month. Its trunk has splintered and its large arms... A 200-year-old Saguaro cactus has fallen due to a ...

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 ...

Justin Stewart, an ecologist with the Society for the Protection of Underground Networks, collects a sample of soil containing mycorrhizal fungi taken at Saguaro National Park. Credit: Wyatt ...

Papago Park is a beloved destination in metro Phoenix, with thousands of people flocking to the park each year to enjoy nature in the heart of the fifth-largest U.S. city. However, Papago Park could ...

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 ...