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This Flood Barrier Could Save Venice

This Flood Barrier Could Save Venice

This Flood Barrier Could Save Venice

Video

2:57

How Venice Was Built On a Swamp

How Venice Was Built On a Swamp

How Venice Was Built On a Swamp

Video

2:54

Sharks Are Showing Up Earlier—and Staying Longer

Sharks Are Showing Up Earlier—and Staying Longer

Sharks Are Showing Up Earlier—and Staying Longer

Video

4:18

Saving Notre Dame’s Iconic Stone Vaulting

Saving Notre Dame’s Iconic Stone Vaulting

Saving Notre Dame’s Iconic Stone Vaulting

Video

2:53

Restoring Notre Dame's Iconic Stained Glass

Restoring Notre Dame's Iconic Stained Glass

Restoring Notre Dame's Iconic Stained Glass

Video

3:00

How Computer Algorithms Make Predictions

How Computer Algorithms Make Predictions

How Computer Algorithms Make Predictions

Video

2:30

How Scientists Developed a Drug to Prevent HIV

How Scientists Developed a Drug to Prevent HIV

How Scientists Developed a Drug to Prevent HIV

Video

3:05

How Storm Surges Work—and Why They’re So Deadly

How Storm Surges Work—and Why They’re So Deadly

How Storm Surges Work—and Why They’re So Deadly

Video

4:49

Watch the DART Spacecraft Smash into an Asteroid

Watch the DART Spacecraft Smash into an Asteroid

Watch the DART Spacecraft Smash into an Asteroid

Video

0:51

How Police Use Algorithms to Predict Crime

How Police Use Algorithms to Predict Crime

How Police Use Algorithms to Predict Crime

Video

5:25

Psychedelics as Medicine: The History of Peyote

Psychedelics as Medicine: The History of Peyote

Psychedelics as Medicine: The History of Peyote

Video

4:02

How Psychedelics Change the Brain

How Psychedelics Change the Brain

How Psychedelics Change the Brain

Video

4:11

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NOVA

How Seaweed May Help Revive Our Oceans

In some parts of the ocean, like in the Gulf of Mexico, there is so little oxygen in the water that marine life is actually suffocating. Could kelp help, or is it mostly hype?