From the Smithsonian Channel

How Was the Grand Canyon Formed?

Name: How Was the Grand Canyon Formed?
Uploaded: 2018-09-13
Duration: 140132
Description: In the 19th century, many people believed that landscapes like the Grand Canyon were shaped by volcanoes and earthquakes. But one American geologist named John Newberry had different ideas.

In the 19th century, many people believed that landscapes like the Grand Canyon were shaped by volcanoes and earthquakes. But one American geologist named John Newberry had different ideas.

Smithsonian magazine | 2:20