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NOVA

Mystery of a Masterpiece

Video duration: 52:52Expires: 12/15/15Video has closed captioning.

Experts investigate whether a portrait sold for about $20,000 in 1998 is a lost Leonardo.

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Art Authentication

Art Authentication

See if clever computer algorithms can distinguish a master forgery from a masterpiece.

Catching a Copy

Catching a Copy

See if you can tell a fake from a genuine van Gogh, and hear how one team of computer scientists did it.

Profile: Hany Farid

Profile: Hany Farid

This self-proclaimed "accidental scientist" is a digital detective inventing new ways to tell if photos hav...

Episodes of NOVA39

Video thumbnail: NOVA Can Alzheimer's Be Stopped?

NOVA

Can Alzheimer's Be Stopped?

Join investigators as they untangle the cause of Alzheimer’s and race to develop a cure.

52:51

Can Alzheimer's Be Stopped?

52:51

Video thumbnail: NOVA Inside Einstein's Mind

NOVA

Inside Einstein's Mind

Retrace the thought experiments that inspired his theory on the nature of reality.

53:07

Inside Einstein's Mind

53:07

Video thumbnail: NOVA Making North America: Human

NOVA

Making North America: Human

How has the land shaped our lives, from the arrival of the first Americans to today?

53:02

Making North America: Human

53:02

Video thumbnail: NOVA Making North America: Life

NOVA

Making North America: Life

How did massive volcanic eruptions, inland seas, and land bridges pave the way for life?

53:32

Making North America: Life

53:32

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Clips of NOVA195

Video thumbnail: NOVA The Serengeti Lion Project

NOVA

The Serengeti Lion Project

After 50 years, Craig Packer & his team have records of the nearly 5,000 Serengeti lions.

1:37

The Serengeti Lion Project

1:37

Video thumbnail: NOVA NOVA Black Holes App

NOVA

NOVA Black Holes App

In this iPad app, navigate fields of cosmic objects in your quest to become a black hole.

1:00

NOVA Black Holes App

1:00

Video thumbnail: NOVA Make Your Own Hydrothermal Vent

NOVA

Make Your Own Hydrothermal Vent

A step-by-step guide to create your very own hydrothermal vent

1:44

Make Your Own Hydrothermal Vent

1:44

Video thumbnail: NOVA 3 Things "Faster Than Light"

NOVA

3 Things "Faster Than Light"

These three things have been said to go faster than light, but do they?

3:49

3 Things "Faster Than Light"

3:49

Video thumbnail: NOVA The Physics Behind Texting

NOVA

The Physics Behind Texting

When you send a text, how does your message make the journey to your friend’s phone?

3:37

The Physics Behind Texting

3:37

Video thumbnail: NOVA Saving the Montauk Lighthouse

NOVA

Saving the Montauk Lighthouse

A unique method to fight erosion saved the Montauk Point Lighthouse from disaster.

2:55

Saving the Montauk Lighthouse

2:55

Video thumbnail: NOVA Saving the Montauk Lighthouse

NOVA

Saving the Montauk Lighthouse

A unique method to fight erosion saved the Montauk Point Lighthouse from disaster.

2:51

Saving the Montauk Lighthouse

2:51

Video thumbnail: NOVA Gravity Changes Colors

NOVA

Gravity Changes Colors

This ingenious experiment proves that gravity changes the color of light all around us.

2:42

Gravity Changes Colors

2:42

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Previews of NOVA157

Video thumbnail: NOVA Great Human Odyssey Preview

NOVA

Great Human Odyssey Preview

Follow our ancient ancestors’ footsteps out of Africa and into every corner of our planet.

0:30

Great Human Odyssey Preview

0:30

Video thumbnail: NOVA Bombing Hitler's Supergun Preview

NOVA

Bombing Hitler's Supergun Preview

Discover how Allied forces conspired to destroy one of Hitler’s most diabolical weapons.

0:30

Bombing Hitler's Supergun Preview

0:30

Video thumbnail: NOVA Operation Lighthouse Rescue Preview

NOVA

Operation Lighthouse Rescue Preview

Join engineers as they race to rescue a historic lighthouse from certain doom.

0:30

Operation Lighthouse Rescue Preview

0:30

Video thumbnail: NOVA Viking Unearthed Sneak Peek

NOVA

Viking Unearthed Sneak Peek

Uncover the truth behind the legendary Vikings and their epic journey to the Americas.

2:27

Viking Unearthed Sneak Peek

2:27

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