Skip to main content
Access to this video is a benefit for members through PBS Passport.

Up Next

Crypto Decoded

Crypto Decoded

Season 49 Episode 18
53:22
NOVA Season 49

Zero to Infinity

Season 49 Episode 19
53:32
London Super Tunnel

London Super Tunnel

Season 50 Episode 1
53:20
Ancient Builders of the Amazon

Ancient Builders of the Amazon

Season 50 Episode 3
53:21
New Eye on the Universe

New Eye on the Universe

Season 50 Episode 4
53:31
Weathering the Future

Weathering the Future

Season 50 Episode 5
53:31
Chasing Carbon Zero

Chasing Carbon Zero

Season 50 Episode 6
53:31
Saving the Right Whale

Saving the Right Whale

Season 50 Episode 7
53:31
Hidden Volcano Abyss

Hidden Volcano Abyss

Season 50 Episode 8
53:19
Your Brain: Perception Deception

Your Brain: Perception Deception

Season 50 Episode 9
53:30
Your Brain: Who's in Control?

Your Brain: Who's in Control?

Season 50 Episode 10
53:31
Ancient Earth: Birth of the Sky

Ancient Earth: Birth of the Sky

Season 50 Episode 11
53:47
Back to Show
NOVA

Nazca Desert Mystery

Season 49 Episode 17

One of the world’s greatest ancient enigmas, the Nazca lines are a dense network of criss-crossing lines, geometric shapes, and animal figures etched across 200 square miles of Peruvian desert. Who created them and why? Ever since they were rediscovered in the 1920s, scholars and enthusiasts have raised countless theories about their purpose.

Watch Preview