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The Trump administration is considering lifting a ban on uranium mining near the Grand Canyon. KNAU’s Ryan Heinsius reports, the 20-year moratorium prevents new claims on more than a million acres.


Michael Chow/The Arizona Republic

State wildlife managers have released a study highlighting the historical range of endangered Mexican gray wolves. It contends the animal’s territory was almost entirely in Mexico, but as KNAU’s Ryan Heinsius reports, some conservation groups are skeptical of the findings. 


Melissa Sevigny

The Grand Canyon’s North Rim is overrun with bison. They trample wetlands and lake shores and devour the grass. That’s changing the ecosystem, a situation that’s been building for more than a decade… Now the National Park Service intends to do something about it. KNAU's Melissa Sevigny reports.

Alan English CPA/Flickr

Environmental groups say they’ve gathered more than 2.5 million comments in support of national monuments in Arizona. It comes as the Trump administration conducts a review of more than two dozen monument designations. KNAU’s Ryan Heinsius reports.


Ryan Heinsius

Environmental and social advocates gathered Tuesday outside Flagstaff City Hall to condemn President Trump and Arizona Senator Jeff Flake for failing to act on climate change. KNAU’s Ryan Heinsius reports. 


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