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NOVA

S40 Ep15: Oklahoma's Deadliest Tornadoes

Video duration: 53:06Expires: 12/15/15Video has closed captioning.

Hear harrowing stories from survivors of Moore’s massive tornado and meet scientists who stalk these ferocious storms.

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Hunt for the Supertwister

Hunt for the Supertwister

Tornado-chasing scientists with an eye to better forecasting risk their lives to plumb the secrets of natur...

Rate Tornado Damage

Rate Tornado Damage

Use the Fujita Scale of tornado intensity to assess the level of destruction left in the wake of actual tor...

Tornado Country

Tornado Country

How is it that with nearly 200 nations in the world, just one—the U.S.—gets up to three-quarters of all tor...

Killer Tornado of 1928

Killer Tornado of 1928

The remarkable story of 17-year-old Dale Larson and 29 Nebraskan schoolchildren shows how far tornado warni...

Episodes of NOVA46

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 Treasures of the Earth: Power

NOVA

Treasures of the Earth: Power

Drill underground to see the treasures that power our world—today and into the future.

53:10

Treasures of the Earth: Power

53:10

Video thumbnail: NOVA Treasures of the Earth: Metals

NOVA

Treasures of the Earth: Metals

What is it about the nature of metals that have made them a pillar of human civilization?

53:40

Treasures of the Earth: Metals

53:40

Video thumbnail: NOVA Treasures of the Earth: Gems

NOVA

Treasures of the Earth: Gems

What processes in the depths of the Earth forge beautiful and precious stones?

53:40

Treasures of the Earth: Gems

53:40

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Clips of NOVA251

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

Video thumbnail: NOVA Holocaust Survival Tale: Esia

NOVA

Holocaust Survival Tale: Esia

Esia Friedman tells the story of how her family made it through the Holocaust alive.

6:21

Holocaust Survival Tale: Esia

6:21

Video thumbnail: NOVA Holocaust Survival Tale: Haim

NOVA

Holocaust Survival Tale: Haim

Zalman Matzkin narrowly escaped the Holocaust in Lithuania, managing to build a new life.

6:34

Holocaust Survival Tale: Haim

6:34

Video thumbnail: NOVA Holocaust Survival Tale: Hana

NOVA

Holocaust Survival Tale: Hana

Hana Amir describes her father escaping the Holocaust through a tunnel he helped to dig.

7:50

Holocaust Survival Tale: Hana

7:50

Video thumbnail: NOVA Saving Jewish History

NOVA

Saving Jewish History

Jewish scholars in Lithuania risked death in WWII to save their literature from the Nazis.

5:21

Saving Jewish History

5:21

Video thumbnail: NOVA S44 Ep5: Nuestro Mundo de Origami

NOVA

S44 Ep5: Nuestro Mundo de Origami

La biologia y el mundo físico al nuestro alrededor parecen estar gobernados por origami.

1:54

S44 Ep5: Nuestro Mundo de Origami

1:54

Video thumbnail: NOVA S44 Ep3: The Battery That Won't Explode

NOVA

S44 Ep3: The Battery That Won't Explode

Mike Zimmerman’s battery endures abuse at the hands of David Pogue.

2:06

S44 Ep3: The Battery That Won't Explode

2:06

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Previews of NOVA190

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

Video thumbnail: NOVA S44: Building Chernobyl's MegaTomb

NOVA

S44: Building Chernobyl's MegaTomb

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

0:30

S44: Building Chernobyl's MegaTomb

0:30

Video thumbnail: NOVA S44: Holocaust Escape Tunnel Preview 1

NOVA

S44: Holocaust Escape Tunnel Preview 1

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

0:30

S44: Holocaust Escape Tunnel Preview 1

0:30

See All Previews