Environment

Arizona officials have given final approval to boost environmental protections for parts of the Upper Verde River and Sycamore Creek in northern Arizona.

To the surprise of many, the great naturalist John Muir spent a year exploring the Petrified Forest in eastern Arizona. Author Scott Thybony set out to learn more about Muir and his desert wanderings. He tells the story in this month’s Canyon Commentary.

Coal has long since given way to cleaner and cheaper energy sources. But President Trump is pushing for a coal comeback, which could have huge implications for the Navajo Nation.

The Trump administration finalized a rule Friday that changes how agencies enforce the Endangered Species Act. The administration narrowed the definition of "harm" under the landmark law.

Have you ever noticed a large, fuzzy, brightly-colored ant moving rapidly along the ground? Commonly called velvet ants, these aren’t ants at all. They’re actually wingless wasps.

Researchers in the Southwest are using hidden recorders to capture the fluted whistles of the pinyon jay. It’s part of a new effort to track ecological changes through sound.

Arizona’s three public universities have developed a new tool to help environmental officials find and cleanup abandoned mines in the state.

A new poll of Arizona voters shows overwhelming support for public lands and opposition to the rollback of environmental laws.

Coyotes and badgers are known as rivals, but sometimes the unlikely pair works together to hunt burrowing rodents.

House finches are a familiar sight in northern Arizona, but their path to the West is a story of human introduction and adaptation.