Monday marks 108 years since the Grand Canyon was declared a National Monument. It's "the one great sight which every American should see," according to Theodore Roosevelt. As the only of the Seven ...

Scientists have spent over a century arguing about when the Colorado River first carved through the Colorado Plateau. A diverse set of geologic studies continues to strongly support a 5–6 Ma ...

Narrow canyons, rock formations, wildlife, and dark skies. Katherine Gallagher is a writer and sustainability expert. She holds a B.A. in English Literature from Chapman University and a Sustainable ...

I feel as though I’ve just passed through a magical portal. One moment, I’m walking across a gravel parking lot for San Diego’s Los Peñasquitos Canyon Preserve, accompanied by the hum of traffic from ...

One of the most popular National Parks in the United States is the Grand Canyon… and rightfully so. The rock formations are millions of years old, and the park is filled with fossils from ancient ...

Deep beneath the Antarctic seas lies a hidden network of 332 colossal submarine canyons, some plunging over 4,000 meters, revealed in unprecedented detail by new high-resolution mapping. These ...