'Extremely volatile': How COVID-19 threatens the global coffee industry

Kevon Rhiney drinks his coffee black, with just a hint of honey. He favours a medium-dark roast, especially from Jamaica’s Blue Mountains.

Monsoon floods rejuvenate Santa Cruz River ecosystem

After one of Tucson's driest years on record in 2020, recent flooding in the Santa Cruz River spells hope for a recovering riparian ecosystem and the water table lying beneath. 

Buffelgrass battle: What's needed to make sure weeds don't win at saguaros' expense

Total victory might be out of reach, but Tucson’s war on weeds isn’t a hopeless quagmire.

Ask a Ranger: A.E. Douglass and diaries of the trees

Andrew Ellicott Douglass came to Flagstaff as an astronomer. But he spent his time here looking as much at pine trees as at stars and planets. Ponderosa pine, the most common tree, became the object of his research — leading him to pioneer a revolutionary science.

Juniper trees usually thrive in Arizona's arid climate. The drought is killing them

Drying juniper berries litter the ground as Rusine Stanley plunges a water hose into empty tanks in her backyard. As bubbles begin to gurgle, each tank fills to the brim.

The Era of Megafires

An East Troublesome-like fire seems inevitable for Vail, Aspen and other resort communities

Insects benefiting from early monsoon rains

Termites and mosquitoes are among those going through seasonal life cycles.