Scattered across Arizona are nearly 200,000 abandoned mines. Many of them sit quietly in Mohave County, tucked into hills and valleys outside Lake Havasu City. They don’t make headlines. Most ...

The U.S. Forest Service on Thursday provided notice that it will publish a final environmental review and draft decision on a transfer of land that would clear the way for a massive copper mining ...

Researchers say they discovered evidence that early Earth was home to more hydrogen than previously thought, calling into ...

When Julian Lozos visited the site of the 2019 Ridgecrest earthquakes two days after the event, he noticed something strange.

A long-lost slab of Earth’s crust may be pulling away the bottom of the oldest part of North America, scientists say ...