Skip to main content

Up Next

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
Solar System: Wandering Worlds

Solar System: Wandering Worlds

Season 51 Episode 13
53:34
Back to Show
NOVA

When Whales Could Walk

Season 51 Episode 1

A spectacular fossil graveyard reveals a 43-million-year-old whale that had four legs and could walk. Follow scientists as they search for new clues to how mammals moved from land into the sea to become the largest animals on Earth.

Watch Preview
Airdates
Wednesday May 20, 9:00 PM PDT on PBS SoCal
Thursday May 21, 2:00 AM PDT on PBS SoCal
Thursday May 21, 1:00 PM PDT on PBS SoCal Plus
Sunday May 24, 9:00 PM PDT on PBS SoCal Plus
Monday May 25, 1:00 AM PDT on PBS SoCal Plus
Monday May 25, 7:00 PM PDT on PBS SoCal Encore
Tuesday May 26, 3:00 PM PDT on PBS SoCal
Tuesday May 26, 4:00 PM PDT on PBS SoCal WORLD
Tuesday May 26, 9:00 PM PDT on PBS SoCal WORLD
Wednesday May 27, 2:00 AM PDT on PBS SoCal Encore
Wednesday May 27, 5:00 AM PDT on PBS SoCal WORLD
Wednesday May 27, 7:00 AM PDT on PBS SoCal Encore
Wednesday May 27, 1:00 PM PDT on PBS SoCal Encore
Support Provided By
Season
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
53:21
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.
Looking for Life on Mars
53:46
NASA launches its most ambitious search yet for traces of ancient life on Mars.
NOVA Season 47
53:32
Discover the fascinating chemistry that makes our world and everything in it—including us.
Beyond the Elements: Indestructible
53:30
Discover the fascinating chemistry that makes our world and everything in it—including us.
Active loading indicator