In 1908, explorer G.E. Kincaid made a shocking discovery in the Grand Canyon: a man-made cavern with hundreds of carved steps ...

They’re “Grand Canyon,” which suggests the students wake mornings and stretch while gazing out over a 5-million-year-old hole, but in fact they’re in Phoenix, which in their defense is ...

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.

The man who led a landmark attempt to navigate the entire length of the Grand Canyon did not exactly look ... This is the mystery of risk: What makes some humans willing to jeopardize so much ...

On March 31, Diana Zacarías, a 22-year-old from Natchitoche, Louisiana, arrived in Arizona to make a dream come true: visit the Grand Canyon. From the very beginning, it seemed an adventure that ...

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.

The Mystery of Chaco Canyon is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku ...

Longtime Arizona residents have probably heard many creepy stories surrounding the state; tales of UFO sightings, shapeshifting creatures and haunted locations abound. Depending on what you believe, ...

Written on the Landscape: Mysteries Beyond Chaco Canyon is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV ...