Arizona House GOP proposes measures for wildfire prevention, including bills for mitigation plans, funding for firefighting, ...

Geologists examine a massive fissure in Arizona and find that may have existed way before it caught public attention.

In one of his first secretarial orders, Doug Burgum ordered staff to review public lands with an eye toward opening them to mining or drilling.

In one of his first secretarial orders, Doug Burgum ordered staff to review public lands with an eye toward opening them to ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

More than 1 million people could pour into western Maricopa County in the coming decades – if housing developers can secure ...

Immediate and organized opposition developed this week in Flagstaff to the proposition originated Tuesday in the state good ...