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Why Trees Are Living Climate Records

Why Trees Are Living Climate Records

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1:29
Plant Fossils Hint at Arctic's Swampy Past

Plant Fossils Hint at Arctic's Swampy Past

Video
3:02
What did the East Coast Look Like 3 Million Years Ago?

What did the East Coast Look Like 3 Million Years Ago?

Video
3:21
This Canadian Cave Has Been Frozen Since the Last Ice Age

This Canadian Cave Has Been Frozen Since the Last Ice Age

Video
3:11
Fifty Million Years Ago, the Arctic Was a Warm Swamp

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Video
2:07
A Bird's-Eye View of Carbon Emissions

A Bird's-Eye View of Carbon Emissions

Video
1:56
What if Carbon Left Your Tailpipe as Solid Chunks?

What if Carbon Left Your Tailpipe as Solid Chunks?

Video
2:12
How Carbon Dioxide Warms Planet Earth

How Carbon Dioxide Warms Planet Earth

Video
2:32
What’s Causing Greenland’s Biggest Glacier to Melt?

What’s Causing Greenland’s Biggest Glacier to Melt?

Video
2:04
This Alaska Community is Losing Sea Ice to Climate Change

This Alaska Community is Losing Sea Ice to Climate Change

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4:47
How Earth’s Climate Changed Over the Past 500 Million Years

How Earth’s Climate Changed Over the Past 500 Million Years

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3:25
How Humans Could Make Icehouse Earth into a Hothouse

How Humans Could Make Icehouse Earth into a Hothouse

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4:21
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NOVA

Using Drones to Solve 170-Year Bowhead Whale Mystery

Why do bowhead whales hang around large rocks in the Arctic? Getting an aerial view allows one research team to make a surprising discovery.
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Ancient Earth: Life Rising
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53:47
Season 50 Episode 13
Ancient Earth: Life Rising
See how life made the leap to land, turning a barren landscape into a lush, green world.
Ancient Earth: Frozen
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53:46
Season 50 Episode 12
Ancient Earth: Frozen
How did life survive on a planet covered in ice from pole to pole?
Ancient Earth: Birth of the Sky
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53:47
Season 50 Episode 11
Ancient Earth: Birth of the Sky
See how Earth transformed from a barren hellscape to a planet capable of sustaining life.
Your Brain: Who's in Control?
53:31
Season 50 Episode 10
Your Brain: Who's in Control?
Dive into the subconscious to see what’s really driving the decisions you make.
Your Brain: Perception Deception
53:30
Season 50 Episode 9
Your Brain: Perception Deception
Neuroscientists discover the tricks and shortcuts the brain takes to help us survive.
Hidden Volcano Abyss
53:19
Season 50 Episode 8
Hidden Volcano Abyss
Investigate one of the most powerful volcanic eruptions in recorded history.
Saving the Right Whale
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53:31
Season 50 Episode 7
Saving the Right Whale
Follow scientists determined to save the critically endangered right whale.
Chasing Carbon Zero
53:31
Season 50 Episode 6
Chasing Carbon Zero
Here’s how the U.S. could reach net-zero carbon emissions by 2050.
Weathering the Future
53:31
Season 50 Episode 5
Weathering the Future
Americans use ancient wisdom and new technology to fight extreme weather.
Nazca Desert Mystery
53:31
Season 49 Episode 17
Nazca Desert Mystery
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
Rebuilding Notre Dame
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53:43
Season 49 Episode 13
Rebuilding Notre Dame
A team tackles the restoration of iconic Notre Dame Cathedral.
Ice Age Footprints
53:43
Season 49 Episode 9
Ice Age Footprints
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
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