NOVA

Time Travel in the Grand Canyon

Clip: Season 42 Episode 20 | 4m 33s

What does this geological wonder reveal about North America’s deep history?

Aired: 11/04/15

Rating: NR

Problems Playing Video? | Closed Captioning

National corporate funding for NOVA is provided by Draper. Major funding for NOVA is provided by the David H. Koch Fund for Science, the Corporation for Public Broadcasting and PBS …

Sponsored By:

NOVA Now

Podcast

NOVA Now

Now it's more critical than ever to distinguish fact from fiction. Introducing NOVA Now, a new podcast digging into the science behind the headlines.

Subscribe