The King's Trough Complex is a several-hundred-kilometer-long, canyon-like system of trenches on the North Atlantic seafloor.

A meteor may have led to the formation of the Grand Canyon, a new study has found. While many Americans are familiar with the Grand Canyon’s beauty and uniqueness, they may not be aware of the story ...

New research suggests that the Grand Canyon was mostly formed only 5 or 6 million years ago, much more recently than previously suspected. A new study published in Nature Geoscience concludes that ...

Mysterious driftwood high in Grand Canyon caves hints at the legacy of Arizona’s huge impact crater.

WASHINGTON — Gazing into the majestic Grand Canyon, awe-struck visitors inevitably ask: ‘‘How old is it?’’ Far older than generally thought, says new evidence that scientists culled from caves lining ...

Geologists reach sites within the Grand Canyon that tell the story of the continent's formation. After four days of navigating the Grand Canyon, Karl and Laura arrive at the places that tell the story ...

CC0 Usage Conditions ApplyClick for more information. In the 19th century, many people believed that landscapes like the Grand Canyon were shaped by volcanoes and earthquakes. But one American ...