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The Crash That Shut Down the Global Economy, Explained

The Crash That Shut Down the Global Economy, Explained

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3:31
Humans May Have Lived in North America Earlier Than Thought

Humans May Have Lived in North America Earlier Than Thought

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4:16
This Device Smells Diseases by Imitating a Dog's Nose

This Device Smells Diseases by Imitating a Dog's Nose

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4:43
NASA Reacts to the James Webb Space Telescope Images

NASA Reacts to the James Webb Space Telescope Images

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1:55
How Scientists Created JWST's First Test Image

How Scientists Created JWST's First Test Image

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4:50
Why Distant Galaxies Look Red

Why Distant Galaxies Look Red

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3:40
The False Promise of Cloning Your Pet

The False Promise of Cloning Your Pet

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6:37
The Hidden Cause of Traffic Jams—and How to Solve Them

The Hidden Cause of Traffic Jams—and How to Solve Them

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6:05
How Seaweed May Help Revive Our Oceans

How Seaweed May Help Revive Our Oceans

Video
4:39
This Flood Barrier Could Save Venice

This Flood Barrier Could Save Venice

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2:57
How Venice Was Built On a Swamp

How Venice Was Built On a Swamp

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2:54
Sharks Are Showing Up Earlier—and Staying Longer

Sharks Are Showing Up Earlier—and Staying Longer

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4:18
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NOVA

New Fossil May Reveal Clues to Dinosaurs' Final Days

Watch scientists uncover what might be the first dinosaur fossil ever found from the day the dinosaurs died.