The Canyon's Age Sparks Fierce Scientific Debate Scientists have spent over a century arguing about when the Colorado River ...

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 ...

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 ...

Geologists have uncovered compelling new evidence that reshapes the understanding of Hells Canyon, America’s deepest river gorge. In a recent study, researchers revealed that this dramatic geological ...