Salt River Project, with aid from corporate, government and nonprofit partners, is thinning Arizona forests to prevent ...

The National Forest Service warned that smoke from planned burns could be visible as far as Interstate 17 near Flagstaff.

Explore the rugged terrain and rare plants at one of Arizona's newest and barely visited national monuments, a serene cactus ...

The Petrified Forest was one of the uniquely Arizona road-trip destinations on the list. If you're ready to take the trip ...

Environmental groups say the federal government violated the National Environmental Policy Act by failing to consider the ...

Northern Arizona is famous for its aspen trees, and a multi-decade study looks into how they’re being affected by climate ...

Over the past couple of months, record fall and winter heat and a lack of precipitation have led to Flagstaff's driest start ...