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Semi-Precious Pebbles

Where you find agates, volcanoes, the source of the gas bubbles, are usually not far way. And just a stone’s throw from the beach—at Gooseberry Falls—I find a landscape made of nothing but volcanic rock.
Length 00:57 Premiere: 10/21/15

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Connections host Renee Shaw smiling in a gray suit along with the show logo and a "Check Schedule" button.Connections host Renee Shaw smiling in a gray suit along with the show logo and a "Check Schedule" button.

Season Episodes

Lee and Liza's Family Tree

S50 E18 Length 53:31 Premiere Date 11/22/23

The Battle to Beat Malaria

S50 E17 Length 53:54 Premiere Date 11/15/23

Inside China's Tech Boom

S50 E16 Length 53:19 Premiere Date 11/08/23

Ancient Earth: Humans

S50 E15 Length 53:15 Premiere Date 11/01/23

Ancient Earth: Inferno

S50 E14 Length 53:45 Premiere Date 10/25/23

Ancient Earth: Life Rising

S50 E13 Length 53:47 Premiere Date 10/18/23

Ancient Earth: Frozen

S50 E12 Length 53:46 Premiere Date 10/11/23

Ancient Earth: Birth of the Sky

S50 E11 Length 53:47 Premiere Date 10/04/23

Your Brain: Who's in Control?

S50 E10 Length 53:31 Premiere Date 05/24/23

Your Brain: Perception Deception

S50 E9 Length 53:30 Premiere Date 05/17/23

Hidden Volcano Abyss

S50 E8 Length 53:20 Premiere Date 05/10/23

Saving the Right Whale

S50 E7 Length 53:31 Premiere Date 05/03/23

Chasing Carbon Zero

S50 E6 Length 53:31 Premiere Date 04/26/23

Weathering the Future

S50 E5 Length 53:31 Premiere Date 04/12/23

New Eye on the Universe

S50 E4 Length 53:31 Premiere Date 02/22/23

Ancient Builders of the Amazon

S50 E3 Length 53:22 Premiere Date 02/15/23

Star Chasers of Senegal

S50 E2 Length 53:20 Premiere Date 02/08/23

London Super Tunnel

S50 E1 Length 53:20 Premiere Date 02/01/23

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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Great Mammoth Mystery - S49 E3

Sir David Attenborough explores a unique site in southern England with rare traces of Ice Age mammoths and Neanderthals. How did humans survive the frigid climate and did they have the tools and talent to hunt the giant beasts?

  • Tuesday December 5, 2023 7:00 pm ET on KETWORLD
  • Tuesday December 5, 2023 6:00 pm CT on KETWORLD
  • Wednesday December 6, 2023 12:00 am ET on KETWORLD
  • Tuesday December 5, 2023 11:00 pm CT on KETWORLD
  • Wednesday December 6, 2023 8:00 am ET on KETWORLD
  • Wednesday December 6, 2023 7:00 am CT on KETWORLD

Ghosts of Stonehenge - S44 E14

Premiered On: 10/11/2017

Who built Stonehenge, and why? Groundbreaking archaeological digs have revealed major new clues about Britain's enigmatic 5,000-year-old site and the people who constructed it.

  • Wednesday December 6, 2023 9:00 pm ET on KET
  • Wednesday December 6, 2023 8:00 pm CT on KET
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  • Monday December 11, 2023 4:00 am CT on KET2
  • Tuesday December 12, 2023 12:00 am ET on KET2
  • Monday December 11, 2023 11:00 pm CT on KET2

The Next Pompeii - S46 E6

Premiered On: 02/20/2019

Discover Campi Flegrei, a lesser-known volcano in the shadow of Vesuvius, if it erupts, millions of lives could be at risk. Scientists explore its unique geology and develop a warning system that could prevent Naples from becoming the next Pompeii.

  • Wednesday December 13, 2023 9:00 pm ET on KET
  • Wednesday December 13, 2023 8:00 pm CT on KET
  • Thursday December 14, 2023 5:00 pm ET on KET
  • Thursday December 14, 2023 4:00 pm CT on KET
  • Friday December 15, 2023 2:00 am ET on KET
  • Friday December 15, 2023 1:00 am CT on KET
  • Sunday December 17, 2023 7:00 pm ET on KET2
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  • Tuesday December 19, 2023 12:00 am ET on KET2
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Decoding the Great Pyramid - S46 E4

Premiered On: 02/06/2019

New archaeological evidence provides clues about the Egyptians who built the Great Pyramid of Giza - and how they did it.

  • Wednesday December 20, 2023 9:00 pm ET on KET
  • Wednesday December 20, 2023 8:00 pm CT on KET
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  • Monday December 25, 2023 11:00 pm CT on KET2

Alaskan Dinosaurs - S48 E21

Wielding chainsaws to extract fossils frozen into the permafrost and flying drones to map thousands of footprints, intrepid paleontologists discover that dinosaurs thrived in the cold and dark of the Arctic Circle.

  • Wednesday December 27, 2023 9:00 pm ET on KET
  • Wednesday December 27, 2023 8:00 pm CT on KET
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Asteroid: Doomsday or Payday? - S40 E24

  • Thursday November 30, 2023 5:00 pm ET on KET
  • Thursday November 30, 2023 4:00 pm CT on KET

Lee and Liza's Family Tree - S50 E18

  • Friday November 24, 2023 2:00 am ET on KET
  • Friday November 24, 2023 1:00 am CT on KET
  • Thursday November 23, 2023 5:00 pm ET on KET
  • Thursday November 23, 2023 4:00 pm CT on KET
  • Wednesday November 22, 2023 9:00 pm ET on KET
  • Wednesday November 22, 2023 8:00 pm CT on KET

The Battle to Beat Malaria - S50 E17

  • Wednesday November 22, 2023 8:00 am ET on KETWORLD
  • Wednesday November 22, 2023 7:00 am CT on KETWORLD
  • Wednesday November 22, 2023 12:00 am ET on KETWORLD
  • Tuesday November 21, 2023 11:00 pm CT on KETWORLD
  • Tuesday November 21, 2023 7:00 pm ET on KETWORLD
  • Tuesday November 21, 2023 6:00 pm CT on KETWORLD
  • Tuesday November 21, 2023 12:00 am ET on KET2
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  • Wednesday November 15, 2023 9:00 pm ET on KET
  • Wednesday November 15, 2023 8:00 pm CT on KET

Inside China's Tech Boom - S50 E16

  • Wednesday November 15, 2023 8:00 am ET on KETWORLD
  • Wednesday November 15, 2023 7:00 am CT on KETWORLD
  • Wednesday November 15, 2023 12:00 am ET on KETWORLD
  • Tuesday November 14, 2023 11:00 pm CT on KETWORLD
  • Tuesday November 14, 2023 7:00 pm ET on KETWORLD
  • Tuesday November 14, 2023 6:00 pm CT on KETWORLD
  • Tuesday November 14, 2023 12:00 am ET on KET2
  • Monday November 13, 2023 11:00 pm CT on KET2
  • Monday November 13, 2023 5:00 am ET on KET2
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  • Sunday November 12, 2023 7:00 pm ET on KET2
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  • Friday November 10, 2023 2:00 am ET on KET
  • Friday November 10, 2023 1:00 am CT on KET
  • Thursday November 9, 2023 5:00 pm ET on KET
  • Thursday November 9, 2023 4:00 pm CT on KET
  • Wednesday November 8, 2023 9:00 pm ET on KET
  • Wednesday November 8, 2023 8:00 pm CT on KET

Ancient Earth: Humans - S50 E15

  • Wednesday November 8, 2023 8:00 am ET on KETWORLD
  • Wednesday November 8, 2023 7:00 am CT on KETWORLD
  • Wednesday November 8, 2023 12:00 am ET on KETWORLD
  • Tuesday November 7, 2023 11:00 pm CT on KETWORLD
  • Tuesday November 7, 2023 7:00 pm ET on KETWORLD
  • Tuesday November 7, 2023 6:00 pm CT on KETWORLD
  • Tuesday November 7, 2023 12:00 am ET on KET2
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  • Thursday November 2, 2023 4:00 pm CT on KET
  • Wednesday November 1, 2023 9:00 pm ET on KET
  • Wednesday November 1, 2023 8:00 pm CT on KET

Ancient Earth: Inferno - S50 E14

  • Wednesday November 1, 2023 8:00 am ET on KETWORLD
  • Wednesday November 1, 2023 7:00 am CT on KETWORLD
  • Wednesday November 1, 2023 12:00 am ET on KETWORLD
  • Tuesday October 31, 2023 11:00 pm CT on KETWORLD
  • Tuesday October 31, 2023 7:00 pm ET on KETWORLD
  • Tuesday October 31, 2023 6:00 pm CT on KETWORLD
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