A review of national monuments threatens beloved natural and cultural landscapes protected under the Antiquities Act.

Under the Trump administration, advocates to preserve an area that includes Frenchman Mountain and Rainbow Gardens are changing gears.

At about 8 a.m., February 10, emergency crews at the Grand Canyon were notified of a report of a broken rock wall and ...

Two such lunar canyons, Vallis Schrödinger and Vallis Planck, stretch over 270 km (168 miles) each, with depths of 2.7 km ...

Wayne Martin Belger set out to make indelible photos of a mystical site on the Navajo Nation. First he needed to relearn how ...