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The World’s First Combat Submarine

The World’s First Combat Submarine

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10:49
How Deadly Was the Musket?

How Deadly Was the Musket?

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4:57
Why Just Planting Trees Won’t Save the Planet

Why Just Planting Trees Won’t Save the Planet

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3:04
These Smart Glasses Know Who You Are, and Much More

These Smart Glasses Know Who You Are, and Much More

Video
4:18
How Algorithms Decide Who Gets a Kidney

How Algorithms Decide Who Gets a Kidney

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1:07
The Science of Scratch-Offs: What Your Brain Can’t Resist

The Science of Scratch-Offs: What Your Brain Can’t Resist

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6:39
This Giant Telescope Will Reveal The Universe in Unbelievable Detail

This Giant Telescope Will Reveal The Universe in Unbelievable Detail

Video
5:59
How Harvard Discovered It Has an Original Copy of the Magna Carta

How Harvard Discovered It Has an Original Copy of the Magna Carta

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3:13
The Next Big Earthquake Could Sink Parts of the Pacific Northwest

The Next Big Earthquake Could Sink Parts of the Pacific Northwest

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5:08
This Discovery Rewrote Human History

This Discovery Rewrote Human History

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2:50
This Was One of the First Known Human Ritual Sites

This Was One of the First Known Human Ritual Sites

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2:41
Signs of Life on Mars? NASA's Discovery, Explained

Signs of Life on Mars? NASA's Discovery, Explained

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3:38
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NOVA

The Rocket-Less Future of Space Travel

Imagine taking an elevator to space. Or blasting off in a nuclear rocket. That might sound like science fiction, but scientists are racing to develop new, more efficient methods of space travel - and some pretty wild ideas are on the table. Discover the rocket-less future of space travel and the quest to make it happen.
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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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