Picture a sunset in which a “forest” of that Sonoran Desert icon the saguaro cactus is silhouetted against the skyline. Now picture that sunset minus the saguaros and you will have an idea why ...

PHOENIX — Marilyn Hanson takes a 3-mile walk every day along a river wash and bike path northwest of Tucson. While she walks, she listens for birds and surveys the areas along the path for invasive ...

Researchers head to Kenya to unlock the weaknesses of invasive buffelgrass to combat it here in Texas. Left image: Texas A&M Agrilife Extention. Right image: The University of Texas at Austin.

Buffelgrass is a highly invasive perennial found in arid regions around the globe. It is known to reduce the biodiversity of native ecosystems and to increase the frequency and intensity of wildfires.

TUCSON — In the Santa Catalina Mountains of the Coronado National Forest, buffelgrass has taken over, occupying thousands of acres of wildlands with what can quickly become fuel for wildfires. Land ...

It’s that time of year in Tucson when annual buffelgrass removal efforts are underway across the basin, and dedicated volunteers are rolling up their sleeves to make a difference for the desert ...

At 7:15 a.m. on a Saturday in late October, the only people out and about are dog-walkers, mailmen and people on their morning drives to retail jobs. But also hard at work in a South Tucson wash is a ...