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Length 03:21 Premiere: 06/30/13

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Season Episodes

Athens: Birth of Democracy
S53 E8 Length 53:40 Premiere Date 04/15/26

Return to the Moon
S53 E7 Length 53:08 Premiere Date 04/29/26

Stone Age Temple Mystery
S53 E6 Length 53:25 Premiere Date 02/25/26

Rain Bombs
S53 E5 Length 53:24 Premiere Date 04/22/26

Mammal Origins
S53 E4 Length 53:38 Premiere Date 02/11/26

Can Dogs Talk?
S53 E3 Length 53:39 Premiere Date 02/04/26

Angkor: Hidden Jungle Empire
S53 E2 Length 53:39 Premiere Date 01/28/26

Asteroids: Spark of Life?
S53 E1 Length 53:31 Premiere Date 01/21/26

Rebuilding 7 World Trade Center
Clip Length 01:48 Premiere Date 08/31/11

The 9/11 Memorial Mock-Up
Clip Length 01:54 Premiere Date 08/24/11

Solving an Engineering Problem
Clip Length 02:49 Premiere Date 08/24/11

Walls of Glass
Clip Length 02:29 Premiere Date 08/24/11

The Memorial Plaques
Clip Length 02:31 Premiere Date 08/24/11

Brian Greene Answers Your Questions
Clip Length 01:07 Premiere Date 08/02/11

A Strict Carbon Diet
Clip Length 02:58 Premiere Date 04/12/11

Green Energy in China
Clip Length 05:09 Premiere Date 04/12/11

A Mind for Music
Clip Length 04:05 Premiere Date 02/09/11

Modeling a Comet Airburst
Clip Length 03:20 Premiere Date 02/09/11

Six Questions with David Pogue
Clip Length 02:33 Premiere Date 01/04/11

Surviving an Elevator Fall
Clip Length 01:31 Premiere Date 08/23/10

Shabbat Elevator
Clip Length 02:42 Premiere Date 08/23/10

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TV Schedules

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Upcoming

Return to the Moon - S53 E8

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

  • Thursday August 13, 2026 4:30 pm ET on KET
  • Thursday August 13, 2026 3:30 pm CT on KET

Human: Origins - S52 E12

Trace the remarkable origins of Homo sapiens and the crucial moments that shaped our species.

  • Wednesday August 19, 2026 9:00 pm ET on KET
  • Wednesday August 19, 2026 8:00 pm CT on KET
  • Thursday August 20, 2026 5:00 pm ET on KET
  • Thursday August 20, 2026 4:00 pm CT on KET
  • Friday August 21, 2026 2:00 am ET on KET
  • Friday August 21, 2026 1:00 am CT on KET
  • Sunday August 23, 2026 7:00 pm ET on KET2
  • Sunday August 23, 2026 6:00 pm CT on KET2
  • Tuesday August 25, 2026 1:00 am ET on KET2
  • Tuesday August 25, 2026 12:00 am CT on KET2

Human: Into the Americas - S52 E15

Follow the perilous journey of ancient humans into the Americas, where a frigid Ice Age landscape and fearsome beasts, like mammoths, tested their resilience.

  • Wednesday August 26, 2026 9:00 pm ET on KET
  • Wednesday August 26, 2026 8:00 pm CT on KET
  • Thursday August 27, 2026 5:00 pm ET on KET
  • Thursday August 27, 2026 4:00 pm CT on KET
  • Friday August 28, 2026 2:00 am ET on KET
  • Friday August 28, 2026 1:00 am CT on KET
  • Sunday August 30, 2026 7:00 pm ET on KET2
  • Sunday August 30, 2026 6:00 pm CT on KET2
  • Tuesday September 1, 2026 1:00 am ET on KET2
  • Tuesday September 1, 2026 12:00 am CT on KET2

Egypt's Tombs of Amun - S52 E4

The discovery of a long-lost ancient cemetery in Egypt's sacred desert reveals details of a unique period when women had remarkable power.

  • Wednesday September 2, 2026 9:00 pm ET on KET
  • Wednesday September 2, 2026 8:00 pm CT on KET
  • Thursday September 3, 2026 5:00 pm ET on KET
  • Thursday September 3, 2026 4:00 pm CT on KET
  • Friday September 4, 2026 2:00 am ET on KET
  • Friday September 4, 2026 1:00 am CT on KET
  • Sunday September 6, 2026 7:00 pm ET on KET2
  • Sunday September 6, 2026 6:00 pm CT on KET2
  • Tuesday September 8, 2026 1:00 am ET on KET2
  • Tuesday September 8, 2026 12:00 am CT on KET2

Angkor: Hidden Jungle Empire - S53 E2

Deep in the Cambodian jungle lie the ruins of Angkor, a marvel of urban engineering and the seat of the once-mighty Khmer Empire. New discoveries are revealing how this ancient metropolis was built and what likely led to its devastating collapse.

  • Wednesday September 9, 2026 9:00 pm ET on KET
  • Wednesday September 9, 2026 8:00 pm CT on KET
  • Thursday September 10, 2026 5:00 pm ET on KET
  • Thursday September 10, 2026 4:00 pm CT on KET
  • Friday September 11, 2026 2:00 am ET on KET
  • Friday September 11, 2026 1:00 am CT on KET
Jump to Upcoming Airdates

Recent

Return to the Moon - S53 E8

  • Friday August 7, 2026 2:00 am ET on KET
  • Friday August 7, 2026 1:00 am CT on KET
  • Thursday August 6, 2026 5:00 pm ET on KET
  • Thursday August 6, 2026 4:00 pm CT on KET
  • Wednesday August 5, 2026 9:00 pm ET on KET
  • Wednesday August 5, 2026 8:00 pm CT on KET

Pluto and Beyond - S46 E1

  • Tuesday August 4, 2026 1:00 am ET on KET2
  • Tuesday August 4, 2026 12:00 am CT on KET2
  • Sunday August 2, 2026 7:00 pm ET on KET2
  • Sunday August 2, 2026 6:00 pm CT on KET2
  • Friday July 31, 2026 2:00 am ET on KET
  • Friday July 31, 2026 1:00 am CT on KET
  • Thursday July 30, 2026 5:00 pm ET on KET
  • Thursday July 30, 2026 4:00 pm CT on KET
  • Wednesday July 29, 2026 9:00 pm ET on KET
  • Wednesday July 29, 2026 8:00 pm CT on KET

Chasing Pluto - S42 E13

  • Tuesday July 28, 2026 1:00 am ET on KET2
  • Tuesday July 28, 2026 12:00 am CT on KET2
  • Sunday July 26, 2026 7:00 pm ET on KET2
  • Sunday July 26, 2026 6:00 pm CT on KET2
  • Friday July 24, 2026 2:00 am ET on KET
  • Friday July 24, 2026 1:00 am CT on KET
  • Thursday July 23, 2026 5:00 pm ET on KET
  • Thursday July 23, 2026 4:00 pm CT on KET
  • Wednesday July 22, 2026 9:00 pm ET on KET
  • Wednesday July 22, 2026 8:00 pm CT on KET

Black Hole Universe - S45 E2

  • Tuesday July 21, 2026 1:00 am ET on KET2
  • Tuesday July 21, 2026 12:00 am CT on KET2
  • Sunday July 19, 2026 7:00 pm ET on KET2
  • Sunday July 19, 2026 6:00 pm CT on KET2
  • Friday July 17, 2026 2:00 am ET on KET
  • Friday July 17, 2026 1:00 am CT on KET
  • Thursday July 16, 2026 5:00 pm ET on KET
  • Thursday July 16, 2026 4:00 pm CT on KET
  • Wednesday July 15, 2026 9:00 pm ET on KET
  • Wednesday July 15, 2026 8:00 pm CT on KET

Black Hole Apocalypse - S45 E1

  • Tuesday July 14, 2026 1:00 am ET on KET2
  • Tuesday July 14, 2026 12:00 am CT on KET2
  • Sunday July 12, 2026 7:00 pm ET on KET2
  • Sunday July 12, 2026 6:00 pm CT on KET2
  • Friday July 10, 2026 2:00 am ET on KET
  • Friday July 10, 2026 1:00 am CT on KET
  • Thursday July 9, 2026 5:00 pm ET on KET
  • Thursday July 9, 2026 4:00 pm CT on KET
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