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NOVA

Deadliest Tornadoes Preview

Video duration: 0:30

Airs April 11, 2012 at 9pm on PBS

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Hunt for the Supertwister

Hunt for the Supertwister

Tornado-chasing scientists with an eye to better forecasting plumb the secrets of nature's most terrifying ...

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 NOVA45

Video thumbnail: NOVA The Nuclear Option

NOVA

The Nuclear Option

How will we power the planet without wrecking the climate?

53:32

The Nuclear Option

53:32

Video thumbnail: NOVA Secrets of the Sky Tombs

NOVA

Secrets of the Sky Tombs

Evidence discovered in the world’s highest tombs reveals ancient rituals and beliefs.

53:32

Secrets of the Sky Tombs

53:32

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

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Clips of NOVA208

Video thumbnail: NOVA Making a Samurai Sword

NOVA

Making a Samurai Sword

Japanese master craftsmen turned a pile of crude iron into the deadly Samurai sword.

2:32

Making a Samurai Sword

2:32

Video thumbnail: NOVA Zika: The Untold Story

NOVA

Zika: The Untold Story

Join the scientists who saw Zika coming as they trace the origins of this devastating viru

14:39

Zika: The Untold Story

14:39

Video thumbnail: NOVA Customizing Education

NOVA

Customizing Education

Alt School is an experiment in customized learning environments.

4:06

Customizing Education

4:06

Video thumbnail: NOVA Why Bats Share Blood

NOVA

Why Bats Share Blood

Vampire bats will sometimes share a blood meal—but only with friends and family.

1:54

Why Bats Share Blood

1:54

Video thumbnail: NOVA Quantum Physics to Protect Votes

NOVA

Quantum Physics to Protect Votes

You can make your vote incredibly secure on Election Day—all thanks to quantum mechanics.

5:23

Quantum Physics to Protect Votes

5:23

Video thumbnail: NOVA Unmaking an Islamic Terrorist

NOVA

Unmaking an Islamic Terrorist

Mubin Shaikh went from young army cadet to self-radicalized Jihadist and back. Here’s what

11:50

Unmaking an Islamic Terrorist

11:50

Video thumbnail: NOVA The Importance of Immersion

NOVA

The Importance of Immersion

For English language learners, inclusion in fluent English classes is crucial for growth.

5:08

The Importance of Immersion

5:08

Video thumbnail: NOVA Dancing to Learn... Science

NOVA

Dancing to Learn... Science

A program uses choreography to get kids from diverse communities excited about science.

4:01

Dancing to Learn... Science

4:01

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Previews of NOVA166

Video thumbnail: NOVA The Nuclear Option Preview

NOVA

The Nuclear Option Preview

How will we power the planet without wrecking the climate?

The Nuclear Option Preview

Video thumbnail: NOVA Secrets of the Sky Tombs Preview

NOVA

Secrets of the Sky Tombs Preview

Evidence discovered in the world’s highest tombs reveals ancient rituals and beliefs.

0:30

Secrets of the Sky Tombs Preview

0:30

Video thumbnail: NOVA Treasures of the Earth: Metals Preview

NOVA

Treasures of the Earth: Metals Preview

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

0:30

Treasures of the Earth: Metals Preview

0:30

Video thumbnail: NOVA Treasures of the Earth: Power Preview

NOVA

Treasures of the Earth: Power Preview

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

0:30

Treasures of the Earth: Power Preview

0:30

See All Previews