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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.
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53:46
How did life survive on a planet covered in ice from pole to pole?
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53:47
See how Earth transformed from a barren hellscape to a planet capable of sustaining life.
53:31
Dive into the subconscious to see what’s really driving the decisions you make.
53:30
Neuroscientists discover the tricks and shortcuts the brain takes to help us survive.
53:19
Investigate one of the most powerful volcanic eruptions in recorded history.
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53:31
Follow scientists determined to save the critically endangered right whale.
53:31
Here’s how the U.S. could reach net-zero carbon emissions by 2050.
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Americans use ancient wisdom and new technology to fight extreme weather.
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Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
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53:43
A team tackles the restoration of iconic Notre Dame Cathedral.
53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
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53:20
How could a single ship cause a major supply chain crisis around the globe?