Colorado River conservation programs have stopped receiving money from the federal government despite temporary restraining orders intended to halt the Trump Administration’s funding freeze.

A new study explains how two deep canyons formed very quickly on the moon during an asteroid impact. KNAU’s Melissa Sevigny spoke with local planetary scientist David Kring about the findings.

Solar advocates continue to fight what they call a “discriminatory” fee added to the utility bills of Arizona Public Service customers who have solar panels.

A new paper coauthored by Northern Arizona University scientists proposes solutions for the decline of the Great Salt Lake in Utah. The lake’s level has dropped about 4 inches a year since the 1990s.

A coalition is working to add federal protections to the Upper Verde River and Sycamore Creek via a Wild and Scenic River designation. It's threatened by groundwater pumping and long-term drought.

Water conservation measures are currently in place at the South Rim of Grand Canyon National Park due to breaks in the Transcanyon Pipeline. Replacing the pipeline requires a more than $200 million investment in infrastructure without disrupting archaeology and ecology.

Biologists have begun re-introducing endangered black-footed ferrets in Aubrey Valley near Seligman. It's Arizona’s first ferret reintroduction in more than 30 years.

A report from the Sierra Club’s Grand Canyon Chapter warns parts of the Upper Verde River could go dry within the next two decades if water use trends continue.

Flagstaff’s Lowell Observatory recently opened the long-awaited Marley Foundation Astronomy Discovery Center. Hundreds of visitors flocked to the new exhibits, which aim to connect people to the universe in unexpected ways.

A new study of aspens on the San Francisco Peaks shows they’re struggling to grow to full-sized trees. But Northern Arizona University forest ecologist Mike Stoddard has a surprising solution: asking hunters to help.