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Using Drones to Solve 170-Year Bowhead Whale Mystery

Using Drones to Solve 170-Year Bowhead Whale Mystery

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3:00
This Little Armadillo Was a Big Ambassador for His Species

This Little Armadillo Was a Big Ambassador for His Species

Video
3:51
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

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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?

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3:21
How Climate Has Shifted Over Millions of Years

How Climate Has Shifted Over Millions of Years

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2:44
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

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2:07
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?

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2:12
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?

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2:04
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NOVA

Are Babies Capable of Making Moral Judgements?

Psychologist Karen Wynn runs an experiment to find out whether babies are born with a sense of morality.