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 <a href="http://www.draper.com/" target=_blank">Draper</a>. Major funding for NOVA is provided by the David H. Koch Fund for Science, the <a href="http://www.cpb.org/" target="_blank">Corporation for ...