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Where Did the Cannabis Plant Come From?

Where Did the Cannabis Plant Come From?

Where Did the Cannabis Plant Come From?

4:10

Why is There a Global Chip Shortage?

Why is There a Global Chip Shortage?

Why is There a Global Chip Shortage?

5:15

Meet the Marvelous Christmas Tree Worm

Meet the Marvelous Christmas Tree Worm

Meet the Marvelous Christmas Tree Worm

5:20

What will the James Webb Space Telescope do?

What will the James Webb Space Telescope do?

What will the James Webb Space Telescope do?

5:44

Could Antiviral Pills Change the Course of the Pandemic?

Could Antiviral Pills Change the Course of the Pandemic?

Could Antiviral Pills Change the Course of the Pandemic?

8:12

Stopping the Millennium Tower from Sinking Further

Stopping the Millennium Tower from Sinking Further

Stopping the Millennium Tower from Sinking Further

3:28

When Earthquake Damage is Invisible

When Earthquake Damage is Invisible

When Earthquake Damage is Invisible

2:51

From Prison to Careers in STEM

From Prison to Careers in STEM

From Prison to Careers in STEM

8:12

How the Morpho Butterfly Gets its Iridescent Color

How the Morpho Butterfly Gets its Iridescent Color

How the Morpho Butterfly Gets its Iridescent Color

2:22

Can South Carolina's Salt Marshes Be Saved?

Can South Carolina's Salt Marshes Be Saved?

Can South Carolina's Salt Marshes Be Saved?

8:27

Fossilized Dung Reveals Clues About Dinosaurs' Diet

Fossilized Dung Reveals Clues About Dinosaurs' Diet

Fossilized Dung Reveals Clues About Dinosaurs' Diet

3:06

How Did This Butterfly Get So Old?

How Did This Butterfly Get So Old?

How Did This Butterfly Get So Old?

2:56

Nova

The Link Between High-Potency Cannabis Use and Psychosis

Regular use of cannabis could increase an adolescent's likelihood of developing a psychiatric disorder, including schizophrenia.

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Full Episodes

Dinosaur Apocalypse: The Last Day

Dinosaur Apocalypse: The Last Day

Nova

Dinosaur Apocalypse: The Last Day

Scientists use new fossils to reconstruct the day the dinosaurs died.

Season 49 Episode 7

Dinosaur Apocalypse: The New Evidence

Dinosaur Apocalypse: The New Evidence

Nova

Dinosaur Apocalypse: The New Evidence

Striking new fossils paint a picture of life right before the asteroid impact.

Season 49 Episode 6

Determined: Fighting Alzheimer's

Determined: Fighting Alzheimer's

Nova

Determined: Fighting Alzheimer's

Follow three women enrolled in a new study to try to prevent Alzheimer’s.

Season 49 Episode 5

Augmented

Augmented

Nova

Augmented

An ingenious new technology allows prosthetic legs to move and feel like the real thing.

Season 49 Episode 4

Great Mammoth Mystery

Great Mammoth Mystery

Nova

Great Mammoth Mystery

Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.

Season 49 Episode 3

Secrets in the Scat

Secrets in the Scat

Nova

Secrets in the Scat

Join biologists on an ingenious hunt for the clues hidden in animal poop.

Season 49 Episode 2

Arctic Sinkholes

Arctic Sinkholes

Nova

Arctic Sinkholes

In the Arctic, long-frozen permafrost melts and releases vast amounts of methane, a potent greenhouse gas, and threaten the climate.

Season 49 Episode 1

Ancient Maya Metropolis

Ancient Maya Metropolis

Nova

Ancient Maya Metropolis

Explore great ancient Maya cities and why their inhabitants abandoned them.

Season 48 Episode 22

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