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Why Experts Say Permanent Daylight Saving Time is Unhealthy

Why Experts Say Permanent Daylight Saving Time is Unhealthy

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How the NFT Was Invented

How the NFT Was Invented

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The History of Crypto Goes Further Back Than You Think

The History of Crypto Goes Further Back Than You Think

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The Area of a Circle, Explained with Pizza

The Area of a Circle, Explained with Pizza

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Thought Experiment: The Infinite Hilbert's Hotel

Thought Experiment: The Infinite Hilbert's Hotel

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Oldest DNA Ever Found Reveals Secrets of the Ancient Arctic

Oldest DNA Ever Found Reveals Secrets of the Ancient Arctic

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Scientists Make Breakthrough in Nuclear Fusion

Scientists Make Breakthrough in Nuclear Fusion

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This Teen Calculates Mind-Boggling Math in Her Head

This Teen Calculates Mind-Boggling Math in Her Head

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3 Major Space Stories of 2022

3 Major Space Stories of 2022

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Astronaut Walter Cunningham on the Historic Apollo 7 Mission

Astronaut Walter Cunningham on the Historic Apollo 7 Mission

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How Engineers Soundproof a New Underground Train Track

How Engineers Soundproof a New Underground Train Track

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These Trains Take Over for Their Drivers to Cut Travel Time

These Trains Take Over for Their Drivers to Cut Travel Time

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NOVA

Who Carved These Mysterious Lines in the Desert?

The Nazca were an ancient group of farmers and fishermen that used desert plateaus as a canvas for giant geoglyphs. But some of these drawings pre-date the Nazca. Who created them and why?
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Beyond the Elements: Reactions
53:31
Season 47 Episode 17
Beyond the Elements: Reactions
Discover the fascinating chemistry that makes our world and everything in it—including us.
Can We Cool the Planet?
53:31
Season 47 Episode 16
Can We Cool the Planet?
Scientists look to geoengineering and other methods to cool the planet.
Nature's Fear Factor
53:21
Season 47 Episode 9
Nature's Fear Factor
Can bringing predators—and fear—back into an ecosystem help restore its natural balance?
Cat Tales
53:21
Season 47 Episode 3
Cat Tales
Goddess, demon, house pet? What does science say about the human relationship with cats?
Polar Extremes
1:52:46
Season 47 Episode 1
Polar Extremes
Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.
Decoding da Vinci
53:30
Season 46 Episode 21
Decoding da Vinci
Discover the science behind Leonardo da Vinci's masterpieces—and Mona Lisa's iconic smile.
Why Bridges Collapse
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53:25
Season 46 Episode 18
Why Bridges Collapse
Can new engineering techniques help prevent deadly bridge collapses?
Rise of the Mammals
53:15
Season 46 Episode 17
Rise of the Mammals
Amazing fossils reveal how mammals took over after an asteroid wiped out the dinosaurs.
Back to the Moon
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53:32
Season 46 Episode 11
Back to the Moon
Discover why scientists and entrepreneurs alike have their sights set on the Moon again.
The Next Pompeii
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53:22
Season 46 Episode 6
The Next Pompeii
In the shadow of Vesuvius and Pompeii, a lesser-known volcano puts Naples at risk.
Rise of the Rockets
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53:34
Season 46 Episode 5
Rise of the Rockets
New technologies are promising a new renaissance in space travel.
Decoding the Great Pyramid
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53:23
Season 46 Episode 4
Decoding the Great Pyramid
New archeological evidence shows the stunning engineering of the Great Pyramid of Giza.
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