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This Is Where the First Alphabet Was Born

From the depths of ancient mines came a revolutionary idea: a simple set of symbols that anyone could learn — the birth of the alphabet, and the democratization of knowledge.
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Clip Season 52 Episode 16 Length 03:05 Premiere: 10/15/25

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Season 52 Episodes

Operation Space Station: Science and Survival
S52 E20 Length 53:41 Premiere Date 11/12/25

Operation Space Station: High-Risk Build
S52 E19 Length 53:40 Premiere Date 11/05/25

Superfloods
S52 E18 Length 53:28 Premiere Date 10/29/25

Ancient Desert Death Trap
S52 E17 Length 53:21 Premiere Date 10/22/25

Human: Building Empires
S52 E16 Length 53:32 Premiere Date 10/15/25

Human: Into the Americas
S52 E15 Length 53:25 Premiere Date 10/08/25

Human: Neanderthal Encounters
S52 E14 Length 53:27 Premiere Date 10/01/25

Human: Journeys
S52 E13 Length 53:25 Premiere Date 09/24/25

Human: Origins
S52 E12 Length 53:32 Premiere Date 09/17/25

Ultimate Crash Test: Impact
S52 E11 Length 53:27 Premiere Date 05/14/25

Ultimate Crash Test: Countdown
S52 E10 Length 53:29 Premiere Date 05/07/25

Critical Condition: Health in Black America
S52 E9 Length 1:36:42 Premiere Date 04/30/25

Secrets of the Forest
S52 E8 Length 53:41 Premiere Date 04/16/25

Revolutionary War Weapons
S52 E7 Length 53:39 Premiere Date 04/09/25

Baltimore Bridge Collapse
S52 E6 Length 53:32 Premiere Date 02/26/25

Pompeii's Secret Underworld
S52 E5 Length 53:40 Premiere Date 02/19/25

Egypt's Tombs of Amun
S52 E4 Length 53:40 Premiere Date 02/12/25

Dino Birds
S52 E3 Length 53:35 Premiere Date 02/05/25

Extreme Airport Engineering
S52 E2 Length 53:40 Premiere Date 01/29/25

What Are UFOs?
S52 E1 Length 53:29 Premiere Date 01/22/25

Human: Building Empires Preview
Preview Length 00:30 Premiere Date 10/15/25

This Is Where the First Alphabet Was Born
Clip Length 03:05 Premiere Date 10/15/25

Göbekli Tepe: The 11,500-Year-Old Mystery That Rewrote History
Clip Length 02:47 Premiere Date 10/15/25

The Next Big Earthquake Could Sink Parts of the Pacific Northwest
Clip Length 05:08 Premiere Date 08/04/25

How Harvard Discovered It Has an Original Copy of the Magna Carta
Clip Length 03:13 Premiere Date 07/10/25

This Giant Telescope Will Reveal The Universe in Unbelievable Detail
Clip Length 05:59 Premiere Date 07/07/25

The Science of Scratch-Offs: What Your Brain Can’t Resist
Clip Length 06:39 Premiere Date 07/07/25

These Smart Glasses Know Who You Are, and Much More
Clip Length 04:18 Premiere Date 04/17/25

4 Ways the Universe Could End
Clip Length 05:07 Premiere Date 03/13/25

Do Aliens Exist? This Famous Equation Offers a Clue
Clip Length 05:04 Premiere Date 03/13/25

The Rocket-Less Future of Space Travel
Clip Length 05:17 Premiere Date 03/13/25

Building Blocks of Life Discovered on Distant Asteroid
Clip Length 06:03 Premiere Date 03/07/25

This Asteroid Might Make Impact With Earth in 2032
Clip Length 03:33 Premiere Date 02/20/25

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Your Brain: Who's in Control? - S50 E10

Dive into the latest research on the subconscious to see what's really driving the decisions you make.

  • Thursday April 9, 2026 5:00 pm ET on KET
  • Thursday April 9, 2026 4:00 pm CT on KET
  • Friday April 10, 2026 2:00 am ET on KET
  • Friday April 10, 2026 1:00 am CT on KET
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Return to the Moon - S53 E8

Follow the Artemis II engineers and crew on a perilous 10-day journey to orbit the Moon.

  • Wednesday April 15, 2026 9:00 pm ET on KET
  • Wednesday April 15, 2026 8:00 pm CT on KET
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  • Tuesday April 21, 2026 1:00 am ET on KET2
  • Tuesday April 21, 2026 12:00 am CT on KET2

Rain Bombs - S53 E5

Scientists race to understand catastrophic weather events known as "rain bombs" and how we can protect ourselves from their growing power.

  • Wednesday April 22, 2026 9:00 pm ET on KET
  • Wednesday April 22, 2026 8:00 pm CT on KET
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  • Sunday April 26, 2026 7:00 pm ET on KET2
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  • Tuesday April 28, 2026 1:00 am ET on KET2
  • Tuesday April 28, 2026 12:00 am CT on KET2

Athens: Birth of Democracy - S53 E7

Archaeologists investigate the dramatic origins of democracy in ancient Greece 2,500 years ago. Mass graves and ancient ruins where tyrants were murdered shine new light on the birth of a revolutionary form of government.

  • Wednesday April 29, 2026 9:00 pm ET on KET
  • Wednesday April 29, 2026 8:00 pm CT on KET
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  • Tuesday May 5, 2026 1:00 am ET on KET2
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Decoding the Universe: Cosmos - S51 E8

Trace groundbreaking discoveries in space research and exploration and follow the teams trying to solve two mysteries in cosmology - dark matter and dark energy.

  • Wednesday May 6, 2026 9:00 pm ET on KET
  • Wednesday May 6, 2026 8:00 pm CT on KET
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  • Sunday May 10, 2026 7:00 pm ET on KET2
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Your Brain: Who's in Control? - S50 E10

  • Wednesday April 8, 2026 9:00 pm ET on KET
  • Wednesday April 8, 2026 8:00 pm CT on KET

Your Brain: Perception Deception - S50 E9

  • Tuesday April 7, 2026 1:00 am ET on KET2
  • Tuesday April 7, 2026 12:00 am CT on KET2
  • Sunday April 5, 2026 7:00 pm ET on KET2
  • Sunday April 5, 2026 6:00 pm CT on KET2
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  • Wednesday April 1, 2026 9:27 pm ET on KET
  • Wednesday April 1, 2026 8:27 pm CT on KET

Baltimore Bridge Collapse - S52 E6

  • Tuesday March 31, 2026 5:00 am ET on KET2
  • Tuesday March 31, 2026 4:00 am CT on KET2
  • Tuesday March 31, 2026 12:00 am ET on KET2
  • Monday March 30, 2026 11:00 pm CT on KET2
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  • Wednesday March 25, 2026 8:00 pm CT on KET

Pompeii's Secret Underworld - S52 E5

  • Tuesday March 24, 2026 5:00 am ET on KET2
  • Tuesday March 24, 2026 4:00 am CT on KET2
  • Tuesday March 24, 2026 12:00 am ET on KET2
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The Planets: Mars - S46 E13

  • Thursday March 12, 2026 4:30 pm ET on KET
  • Thursday March 12, 2026 3:30 pm CT on KET
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