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Gooseberry Falls 4

This video explores Gooseberry Falls.
Length 01:01 Premiere: 08/02/15

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Knowledge Keepers
S53 E10 Length 53:41 Premiere Date 09/23/26

The Battle to Breathe
S53 E9 Length 53:34 Premiere Date 09/16/26

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 53:40 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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Knowledge Keepers - S53 E10

See how cultural traditions inform remarkable innovations, from ancient sea farming techniques to celestial navigation methods.

  • Wednesday September 23, 2026 9:00 pm ET on KET
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Stone Age Masterpiece - S53 E11

Scientists study the decorated cave Chauvet, hidden in the gorges of Southern France, searching for clues about why people arrived there and what motivated them to cover its walls with drawings.

  • Wednesday September 30, 2026 9:00 pm ET on KET
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Space Wars - S53 E12

Explore the escalating military struggle to control space and satellites. Learn why the satellites we rely on are vulnerable to attack, how debris is crowding Earth's orbits and what can be done to protect them.

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Evolution: Brain Power - S53 E13

Learn how the human brain, and those of clever animals like the dolphin, evolved over time.

  • Wednesday October 14, 2026 9:00 pm ET on KET
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Evolution: Need to Feed - S53 E14

The surprising story of how our planet's diverse creatures became the furious feeding machines they are today.

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The Battle to Breathe - S53 E9

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Angkor: Hidden Jungle Empire - S53 E2

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

Egypt's Tombs of Amun - S52 E4

  • Tuesday September 8, 2026 1:00 am ET on KET2
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Human: Into the Americas - S52 E15

  • Tuesday September 1, 2026 1:00 am ET on KET2
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Human: Origins - S52 E12

  • Tuesday August 25, 2026 1:00 am ET on KET2
  • Tuesday August 25, 2026 12:00 am CT on KET2
  • Sunday August 23, 2026 7:00 pm ET on KET2
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