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

Up Next

When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:35
Easter Island Origins

Easter Island Origins

Season 51 Episode 2
53:17
Building the Eiffel Tower

Building the Eiffel Tower

Season 51 Episode 3
53:15
Hunt for the Oldest DNA

Hunt for the Oldest DNA

Season 51 Episode 4
53:10
A.I. Revolution

A.I. Revolution

Season 51 Episode 5
53:30
Great American Eclipse

Great American Eclipse

Season 51 Episode 6
53:34
Secrets in Your Data

Secrets in Your Data

Season 51 Episode 7
53:40
Decoding the Universe: Cosmos

Decoding the Universe: Cosmos

Season 51 Episode 8
53:38
Solar System: Storm Worlds

Solar System: Storm Worlds

Season 51 Episode 9
53:34
Solar System: Strange Worlds

Solar System: Strange Worlds

Season 51 Episode 10
53:34
Solar System: Volcano Worlds

Solar System: Volcano Worlds

Season 51 Episode 11
53:34
Solar System: Icy Worlds

Solar System: Icy Worlds

Season 51 Episode 12
53:34
Back to Show
NOVA

Lee and Liza's Family Tree

Season 50 Episode 18

With the help of scientists and genealogists, filmmaker Byron Hurt and his family members search for their ancestors. Follow their journey as they hunt for new details of a history long obscured by the enduring legacy of slavery.

Watch Preview
Available Until
11/22/2026
Support Provided By
Season
Nazca Desert Mystery
53:31
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
Rebuilding Notre Dame
Unlock with PBS Passport
53:43
A team tackles the restoration of iconic Notre Dame Cathedral.
Ice Age Footprints
53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
Why Ships Crash
Unlock with PBS Passport
53:20
How could a single ship cause a major supply chain crisis around the globe?
Great Mammoth Mystery
53:16
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.
Arctic Sinkholes
53:30
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate
Ancient Maya Metropolis
53:31
Explore great ancient Maya cities and why their inhabitants abandoned them.
Alaskan Dinosaurs
Unlock with PBS Passport
53:17
Intrepid paleontologists discover that dinosaurs thrived in the Arctic’s cold and dark.
Edible Insects
Unlock with PBS Passport
53:28
Take a tasty look at insect foods that could benefit our health and our warming planet.
Particles Unknown
Unlock with PBS Passport
53:28
Join the hunt for the universe’s most common—yet most elusive and baffling—particle.
The Cannabis Question
53:36
As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.
Reef Rescue
54:06
Scientists race to help corals adapt to warming oceans through assisted evolution.
Active loading indicator