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NOVA

S40 Ep16: Ground Zero Supertower Preview

Video duration: 0:30

Engineers race to complete 1 World Trade Center as they grapple with the final challenges.

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Engineering Ground Zero

Engineering Ground Zero

Designing and building One World Trade Center and the National September 11 Memorial & Museum

Episodes of NOVA45

Video thumbnail: NOVA S44 Ep9: Chinese Chariot Revealed

NOVA

S44 Ep9: Chinese Chariot Revealed

A team of experts rebuild an ancient battle chariot to help uncover its design secrets.

53:46

S44 Ep9: Chinese Chariot Revealed

53:46

Video thumbnail: NOVA S44 Ep8: Building Chernobyl's MegaTomb

NOVA

S44 Ep8: Building Chernobyl's MegaTomb

Engineers race to build a massive dome to contain the crumbling remains of the reactor.

52:55

S44 Ep8: Building Chernobyl's MegaTomb

52:55

Video thumbnail: NOVA S44 Ep7: Holocaust Escape Tunnel

NOVA

S44 Ep7: Holocaust Escape Tunnel

At ground zero for the final solution, scientists uncover a story of hope and bravery.

54:14

S44 Ep7: Holocaust Escape Tunnel

54:14

Video thumbnail: NOVA S40 Ep13: Meteor StrikePassport

NOVA

S40 Ep13: Meteor Strike

A meteor burst into a fireball over Siberia. Can we spot the next deadly asteroid in time?

53:06

S40 Ep13: Meteor Strike

53:06

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Clips of NOVA232

Video thumbnail: NOVA This Woman Helped Save Flint

NOVA

This Woman Helped Save Flint

LeeAnne Walters, of Flint, Michigan, helps save the city from a lead water crisis.

2:29

This Woman Helped Save Flint

2:29

Video thumbnail: NOVA WannaCry Cyberattack Explained

NOVA

WannaCry Cyberattack Explained

The WannaCry cyberattack cost the economy billions of dollars. Here's why that's scary.

1:56

WannaCry Cyberattack Explained

1:56

Video thumbnail: NOVA Meet the Gastric-Brooding Frog

NOVA

Meet the Gastric-Brooding Frog

These frogs barfed up their babies—and now scientists are trying to revive them.

5:29

Meet the Gastric-Brooding Frog

5:29

Video thumbnail: NOVA Poisoned Water Q&A with Scientists and Filmmakers

NOVA

Poisoned Water Q&A with Scientists and Filmmakers

What exactly went wrong in Flint—and what does it mean for the rest of the country?

2:00

Poisoned Water Q&A with Scientists and Filmmakers

2:00

Video thumbnail: NOVA Should You Wash Your Hands?

NOVA

Should You Wash Your Hands?

What do we really mean when we say that we’re clean?

4:40

Should You Wash Your Hands?

4:40

Video thumbnail: NOVA Front Row Seat to Saturn

NOVA

Front Row Seat to Saturn

Out near Saturn, the spacecraft Cassini has just entered its final and riskiest chapter.

2:39

Front Row Seat to Saturn

2:39

Video thumbnail: NOVA Holocaust Escape Tunnel Prologue

NOVA

Holocaust Escape Tunnel Prologue

In a forest in Lithuania, a team of scientists searches for traces of a vanished people.

2:03

Holocaust Escape Tunnel Prologue

2:03

Video thumbnail: NOVA Holocaust Survival Tale: Abe

NOVA

Holocaust Survival Tale: Abe

In Lithuania during WWII, Abe Gol’s father led Jewish prisoners in a tunnel escape.

7:22

Holocaust Survival Tale: Abe

7:22

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Previews of NOVA176

Video thumbnail: NOVA S44 Ep9: Chinese Chariot Revealed Preview

NOVA

S44 Ep9: Chinese Chariot Revealed Preview

A team of experts rebuild an ancient battle chariot to help uncover its design secrets.

0:30

S44 Ep9: Chinese Chariot Revealed Preview

0:30

Video thumbnail: NOVA S44 Ep10: Poisoned Water Preview

NOVA

S44 Ep10: Poisoned Water Preview

What exactly went wrong in Flint—and what does it mean for the rest of the country?

0:30

S44 Ep10: Poisoned Water Preview

0:30

Video thumbnail: NOVA Holocaust Escape Tunnel Q&A with Historians and Filmmakers

NOVA

Holocaust Escape Tunnel Q&A with Historians and Filmmakers

At ground zero for the final solution, scientists uncover a story of hope and bravery.

2:00

Holocaust Escape Tunnel Q&A with Historians and Filmmakers

2:00

Video thumbnail: NOVA Holocaust Escape Tunnel Preview 2

NOVA

Holocaust Escape Tunnel Preview 2

At ground zero for the final solution, scientists uncover a story of hope and bravery.

0:30

Holocaust Escape Tunnel Preview 2

0:30

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