PBS Anywhere

Providing Support for PBS.org

NOVA

Oklahoma's Deadliest Tornadoes

53:06Expires: 12/15/15

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

Buy this Video:iTunes

Learn More

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 NOVA41

NOVA

Creatures of Light

Deep in the ocean, animals that flash, sparkle, and glow use light to survive in the dark.

53:07

NOVA

Himalayan Megaquake

The 2015 quake that rocked Nepal was the biggest in 90 years—can we forecast the next one?

53:07

NOVA

Mystery Beneath the Ice

What’s behind the death of a tiny creature with an outsized role in the Antarctic?

52:51

NOVA

Life's Rocky Start

What is the secret link between rocks and minerals, and every living thing on Earth?

53:07

See all Episodes

Clips of NOVA179

NOVA

Amazing Calendar Trick

With a dash of math, know the day of the week for any date on the calendar.

4:17

NOVA

The Hidden Fluorescent World

The proteins that make fish fluoresce could help scientists map the human brain.

3:19

NOVA

How to Find a Galaxy

Knowing the addresses of a thousand galaxies yielded a remarkable picture of our universe.

4:24

NOVA

A Rock Symphony

Robert Hazen is a geologist who plays music—two interests that have a lot in common.

1:34

NOVA

Bazaar Rocks

It’s possible to find all of Earth’s history tucked inside a market stall in Morocco.

2:24

NOVA

A Cathedral of Ice

A scientist dives beneath the surface of the frigid Antarctic ice sheet.

2:45

NOVA

The Minerals Behind Modern Life

Minerals are essential in making everything from skyscrapers tall, to mobile phones small.

2:04

NOVA

Launching Half a Ship

Want to make a luxury cruise liner fast? Use two shipyards, then join the pieces together.

2:42

See all

Previews of NOVA150

NOVA

Rise of the Robots Preview

How will human-like robots change our future and how we see ourselves?

0:30

NOVA

Himalayan Megaquake Preview

The 2015 quake that rocked Nepal was the biggest in 90 years—can we forecast the next one?

0:30

NOVA

Memory Hackers Preview

Scientists are learning how we can edit memories—and delete our worst fears.

0:30

NOVA

Mystery Beneath the Ice Preview

What’s behind the death of a tiny creature with an outsized role in the Antarctic?

0:30

See all