A review of national monuments threatens beloved natural and cultural landscapes protected under the Antiquities Act.
White Sands National Park, New Mexico Imagine a sea of white, not snow, but sand stretching as far as the eye can see. White ...
Grand Canyon National Park – Arizona The Grand Canyon is a testament to the earth's artistic powers, with its sprawling ...
Two such lunar canyons, Vallis Schrödinger and Vallis Planck, stretch over 270 km (168 miles) each, with depths of 2.7 km ...