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Plant Fossils Hint at Arctic's Swampy Past

Plant Fossils Hint at Arctic's Swampy Past

Plant Fossils Hint at Arctic's Swampy Past

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3:02

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

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

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

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3:21

This Canadian Cave Has Been Frozen Since the Last Ice Age

This Canadian Cave Has Been Frozen Since the Last Ice Age

This Canadian Cave Has Been Frozen Since the Last Ice Age

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3:11

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Fifty Million Years Ago, the Arctic Was a Warm Swamp

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2:07

A Bird's-Eye View of Carbon Emissions

A Bird's-Eye View of Carbon Emissions

A Bird's-Eye View of Carbon Emissions

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1:56

What if Carbon Left Your Tailpipe as Solid Chunks?

What if Carbon Left Your Tailpipe as Solid Chunks?

What if Carbon Left Your Tailpipe as Solid Chunks?

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2:12

How Carbon Dioxide Warms Planet Earth

How Carbon Dioxide Warms Planet Earth

How Carbon Dioxide Warms Planet Earth

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2:32

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

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

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

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2:04

This Alaska Community is Losing Sea Ice to Climate Change

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

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

How Humans Could Make Icehouse Earth into a Hothouse

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4:21

How Climate Has Shifted Over Millions of Years

How Climate Has Shifted Over Millions of Years

How Climate Has Shifted Over Millions of Years

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2:44

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NOVA

Why Trees Are Living Climate Records

Trees are living records of Earth’s climatic past. Play NOVA’s Polar Lab to learn how trees grow by simulating how they respond to different environments.