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Arctic Sinkholes

Colossal explosions shake a remote corner of the Siberian tundra, leaving behind massive craters. In Alaska, a huge lake erupts with bubbles of inflammable gas. Scientists are discovering that these mystifying phenomena add up to a ticking time bomb, as long-frozen permafrost melts and releases vast amounts of methane, a potent greenhouse gas.
Season 49 Episode 1 Length 53:17 Premiere: 02/02/22

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Season 49 Episodes

Zero to Infinity

S49 E19 Length 53:32 Premiere Date 11/16/22

Crypto Decoded

S49 E18 Length 53:22 Premiere Date 11/09/22

Nazca Desert Mystery

S49 E17 Length 53:31 Premiere Date 11/02/22

Ocean Invaders

S49 E16 Length 53:32 Premiere Date 10/26/22

Can Psychedelics Cure?

S49 E15 Length 53:47 Premiere Date 10/19/22

Computers v. Crime

S49 E14 Length 53:30 Premiere Date 10/12/22

Rebuilding Notre Dame

S49 E13 Length 53:31 Premiere Date 10/05/22

Saving Venice

S49 E12 Length 53:31 Premiere Date 09/28/22

Ending HIV in America

S49 E11 Length 53:33 Premiere Date 10/05/22

Ultimate Space Telescope

S49 E10 Length 53:33 Premiere Date 07/13/22

Ice Age Footprints

S49 E9 Length 53:32 Premiere Date 05/25/22

Why Ships Crash

S49 E8 Length 53:20 Premiere Date 05/18/22

Determined: Fighting Alzheimer's

S49 E5 Length 53:28 Premiere Date 04/06/22

Augmented

S49 E4 Length 1:25:02 Premiere Date 02/23/22

Great Mammoth Mystery

S49 E3 Length 53:26 Premiere Date 02/16/22

Secrets in the Scat

S49 E2 Length 53:32 Premiere Date 02/09/22

Arctic Sinkholes

S49 E1 Length 53:17 Premiere Date 02/02/22

How Seaweed May Help Revive Our Oceans

Clip Length 04:39 Premiere Date 08/18/22

The False Promise of Cloning Your Pet

Clip Length 06:37 Premiere Date 08/16/22

This Device Smells Diseases by Imitating a Dog's Nose

Clip Length 04:43 Premiere Date 05/26/22

War Threatens Ukrainian Nuclear Power Plants

Clip Length 07:09 Premiere Date 04/04/22

Animal-to-Human Organ Transplants

Clip Length 04:59 Premiere Date 03/02/22

What is 5G, and is it Safe to Use on Planes?

Clip Length 05:39 Premiere Date 02/16/22

Introducing NOVA's Financial Lab

Clip Length 01:22 Premiere Date 02/11/22

Portable Homes Help Communities Adapt to Climate Change

Clip Length 04:18 Premiere Date 02/08/22

Arctic Sinkholes Preview

Preview Length 00:30 Premiere Date 02/02/22

What's Causing Water to Bubble in the Arctic?

Clip Length 04:21 Premiere Date 02/02/22

Can South Carolina's Salt Marshes Be Saved?

Clip Length 08:27 Premiere Date 01/26/22

From Prison to Careers in STEM

Clip Length 08:12 Premiere Date 01/12/22

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Why Ships Crash - S49 E9

Nova investigates the 2021 crash of the Ever Given container ship in the Suez Canal and its impact.

  • Thursday June 1, 2023 5:00 pm ET on KET
  • Thursday June 1, 2023 4:00 pm CT on KET
  • Friday June 2, 2023 2:00 am ET on KET
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Operation Lighthouse Rescue - S43 E13

Premiered On: 05/04/2016

Engineers race to rescue the Gay Head Lighthouse, a historic landmark perched high on the cliffs of Martha's Vineyard, soon to become the next victim of the ocean's erosion of the island's cliffs.

  • Wednesday June 7, 2023 9:00 pm ET on KET
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  • Tuesday June 13, 2023 12:00 am ET on KET2
  • Monday June 12, 2023 11:00 pm CT on KET2

Back to the Moon - S46 E11

Premiered On: 07/10/2019

Fifty years after humans first set foot on the Moon, new scientific discoveries are fueling excitement for a return to the lunar surface. Scientists and engineers are working to make life on the Moon a reality.

  • Wednesday June 14, 2023 9:00 pm ET on KET
  • Wednesday June 14, 2023 8:00 pm CT on KET
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  • Sunday June 18, 2023 7:00 pm ET on KET2
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  • Monday June 19, 2023 11:00 pm CT on KET2

Why Bridges Collapse - S46 E18

Premiered On: 10/16/2019

"Nova" investigates what may have led to the collapse of the Polcevera Bridge in Genoa, Italy, that killed 43 people. But the Polcevera Bridge isn't alone. Join experts as they compare what happened to the Polcevera with other deadly bridge collapses, including Minnesota's I-35W bridge over the Mississippi and the famed Silver Bridge over the Ohio River.

  • Wednesday June 21, 2023 9:00 pm ET on KET
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Ice Age Footprints - S49 E8

Thousands of prehistoric footprints in New Mexico's White Sands National Park capture moments when Ice Age humans crossed paths with enormous ground sloths and mammoths.

  • Wednesday June 28, 2023 9:00 pm ET on KET
  • Wednesday June 28, 2023 8:00 pm CT on KET
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  • Monday July 3, 2023 4:00 am CT on KET2

Emperor's Ghost Army - S41 E20

Premiered On: 11/12/2014

The program reveals the secrets of China's Terracotta Army, built to serve its first emperor, Qin Shi Huang Di in the afterlife, and brings to life the startlingly sophisticated world of Qin's legendary empire.

  • Wednesday June 28, 2023 10:00 pm ET on KET
  • Wednesday June 28, 2023 9:00 pm CT on KET
  • Friday June 30, 2023 3:00 am ET on KET
  • Friday June 30, 2023 2:00 am CT on KET
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Why Ships Crash - S49 E9

  • Wednesday May 31, 2023 9:00 pm ET on KET
  • Wednesday May 31, 2023 8:00 pm CT on KET

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

  • Wednesday May 31, 2023 8:00 am ET on KETWORLD
  • Wednesday May 31, 2023 7:00 am CT on KETWORLD
  • Wednesday May 31, 2023 12:00 am ET on KETWORLD
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  • Wednesday May 24, 2023 9:00 pm ET on KET
  • Wednesday May 24, 2023 8:00 pm CT on KET

Your Brain: Perception Deception - S50 E9

  • Wednesday May 24, 2023 8:00 am ET on KETWORLD
  • Wednesday May 24, 2023 7:00 am CT on KETWORLD
  • Wednesday May 24, 2023 12:00 am ET on KETWORLD
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  • Wednesday May 17, 2023 8:00 pm CT on KET

Hidden Volcano Abyss - S50 E8

  • Wednesday May 17, 2023 8:00 am ET on KETWORLD
  • Wednesday May 17, 2023 7:00 am CT on KETWORLD
  • Wednesday May 17, 2023 12:00 am ET on KETWORLD
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  • Friday May 12, 2023 1:00 am CT on KET
  • Wednesday May 10, 2023 9:00 pm ET on KET
  • Wednesday May 10, 2023 8:00 pm CT on KET

Saving the Right Whale - S50 E7

  • Wednesday May 10, 2023 8:00 am ET on KETWORLD
  • Wednesday May 10, 2023 7:00 am CT on KETWORLD
  • Wednesday May 10, 2023 12:00 am ET on KETWORLD
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  • Wednesday May 3, 2023 9:00 pm ET on KET
  • Wednesday May 3, 2023 8:00 pm CT on KET

Chasing Carbon Zero - S50 E6

  • Wednesday May 3, 2023 8:00 am ET on KETWORLD
  • Wednesday May 3, 2023 7:00 am CT on KETWORLD
  • Wednesday May 3, 2023 12:00 am ET on KETWORLD
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