Extras

Video thumbnail: NOVA Exclusive: Edward Snowden on Cyber Attacks

NOVA

Exclusive: Edward Snowden on Cyber Attacks

The former NSA contractor sat down with NOVA to discuss the future of cyber warfare.

Exclusive: Edward Snowden on Cyber Attacks

Video thumbnail: NOVA Balloon Animals

NOVA

Balloon Animals

Hot air balloons let people soar into the sky, but they had their share of turbulence.

Balloon Animals

Video thumbnail: NOVA Do We Live in a Multiverse?

NOVA

Do We Live in a Multiverse?

Could parallel universes exist? If so, what would they look like and how would they form?

Do We Live in a Multiverse?

Video thumbnail: NOVA Zombies and Calculus, Part 2

NOVA

Zombies and Calculus, Part 2

You're being chased by zombies, and understanding tangent vectors may save your life.

Zombies and Calculus, Part 2

Video thumbnail: NOVA Secrets of Urban Archaeology

NOVA

Secrets of Urban Archaeology

Urban archaeologists dig for stories beneath city streets.

Secrets of Urban Archaeology

Video thumbnail: NOVA Knotty Thrills

NOVA

Knotty Thrills

Three physicists untie a 150-year-old tangle of a puzzle.

Knotty Thrills

Video thumbnail: NOVA 2.5 Ways to Die in a Black Hole

NOVA

2.5 Ways to Die in a Black Hole

The answer to how you would die in a black hole could revolutionize the laws of nature.

2.5 Ways to Die in a Black Hole

Video thumbnail: NOVA Carnivorous Plants and Killer Ants

NOVA

Carnivorous Plants and Killer Ants

Ant eats plant's parasites. Plant eats ant's poop. It's the circle of life.

Carnivorous Plants and Killer Ants

Video thumbnail: NOVA 16th Century Nose Jobs

NOVA

16th Century Nose Jobs

Thinking about getting a nose job? Thank goodness it's not the 16th century.

16th Century Nose Jobs

Video thumbnail: NOVA Wind Power

NOVA

Wind Power

Modern wind turbines capture energy from the wind and convert it into electricity.

Wind Power

Video thumbnail: NOVA Energy Defined

NOVA

Energy Defined

What is energy and why are we on a never ending search for new energy sources?

Energy Defined

Video thumbnail: NOVA Toward a Smarter Grid

NOVA

Toward a Smarter Grid

What can be done to make the power grid more reliable and efficient?

Toward a Smarter Grid

Video thumbnail: NOVA A Never Ending Supply

NOVA

A Never Ending Supply

What makes an energy source renewable and how can we use them to power our societies?

A Never Ending Supply

Video thumbnail: NOVA Growing Appetites, Limited Resources

NOVA

Growing Appetites, Limited Resources

The need for alternative energy sources is more pressing than ever.

Growing Appetites, Limited Resources

Video thumbnail: NOVA Solar Power

NOVA

Solar Power

How can we convert the Sun’s light and heat into energy we can use?

Solar Power

Video thumbnail: NOVA The Tongue-Eating Parasite

NOVA

The Tongue-Eating Parasite

Gross science: This parasite crawls into a fish’s mouth and replaces its tongue.

The Tongue-Eating Parasite

Video thumbnail: NOVA NOVA Elements iPad App

NOVA

NOVA Elements iPad App

Explore an interactive periodic table, play an elemental game, and watch the NOVA program.

NOVA Elements iPad App

Video thumbnail: NOVA Light My Fire

NOVA

Light My Fire

What do you get when you introduce a chunk of Sodium to a Bunsen burner? Sizzling romance.

Light My Fire

Video thumbnail: NOVA The Higgs Particle Matters

NOVA

The Higgs Particle Matters

Learn how Peter Higgs' ideas about matter transformed our understanding of space.

The Higgs Particle Matters

Video thumbnail: NOVA The Making of the

NOVA

The Making of the

Take a behind-the-scenes look at this animated scene from "The Fabric of the Cosmos."

The Making of the

Video thumbnail: NOVA Finding Earth-Like Planets

NOVA

Finding Earth-Like Planets

Learn how to find signs of extraterrestrial life in our galaxy without leaving home.

Finding Earth-Like Planets

Video thumbnail: NOVA An Interview With Steve Jobs

NOVA

An Interview With Steve Jobs

Watch a rare interview with the late Apple visionary, conducted in 1990.

An Interview With Steve Jobs

Video thumbnail: NOVA Heisenberg Humor

NOVA

Heisenberg Humor

Quantum mechanics is nothing to laugh at. Well, sometimes it is.

Heisenberg Humor

Video thumbnail: NOVA Reflections on the 9/11 Memorial

NOVA

Reflections on the 9/11 Memorial

Visitors to the newly opened 9/11 memorial share their impressions.

Reflections on the 9/11 Memorial