Skip to Main Content

Ancient Earth: Birth of the Sky

Dive into the most dramatic events in Earth’s 4.5-billion-year history, from its birth to the emergence of humanity. How did a hellscape of molten lava transform into a lush, green, watery planet filled with life? With dazzlingly realistic animation based on the latest research, each of these five episodes brings to life long-lost worlds that ultimately led to the one we know today.
Preview Season 50 Episode 11 Length 01:00 Premiere: 09/10/23

Sponsored by:

Season 50 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 53:19 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

Ancient Earth May Have Had Red Oceans

Clip Length 03:34 Premiere Date 10/04/23

Ancient Earth Was a Hellscape

Clip Length 03:09 Premiere Date 10/04/23

Ancient Earth Series Preview

Preview Length 01:00 Premiere Date 09/10/23

Rare Fossil Appears to Show Mammal Attacking Dinosaur

Clip Length 03:26 Premiere Date 07/28/23

The nation’s first big offshore wind farm is coming

Clip Length 05:22 Premiere Date 07/21/23

What Made the Titan Submersible Design Unconventional?

Clip Length 05:05 Premiere Date 07/03/23

Could Whale Poop Help Cool the Planet?

Clip Length 02:43 Premiere Date 05/12/23

This Fungus Is Spreading Rapidly in Hospitals

Clip Length 03:24 Premiere Date 04/24/23

There’s Something Living in Wildfire Smoke

Clip Length 01:59 Premiere Date 04/11/23

How the West Is Making It Rain, With Science

Clip Length 06:22 Premiere Date 04/10/23

Soothing Science: The Light You See at Sunset

Clip Length 08:01 Premiere Date 04/04/23

The Mystery and Physics of the Spiral Football Pass

Clip Length 03:43 Premiere Date 02/13/23

See All Episodes

caret down

TV Schedules

Jump to Recent Airdates

Upcoming

Making North America: Life - S42 E21

Premiered On: 11/11/2015

The mysteries of how life evolved in North America, including the arrival of humans, are explored.

  • Wednesday April 24, 2024 10:00 pm ET on KET
  • Wednesday April 24, 2024 9:00 pm CT on KET
  • Thursday April 25, 2024 5:00 pm ET on KET
  • Thursday April 25, 2024 4:00 pm CT on KET
  • Friday April 26, 2024 3:00 am ET on KET
  • Friday April 26, 2024 2:00 am CT on KET
  • Sunday April 28, 2024 7:00 pm ET on KET2
  • Sunday April 28, 2024 6:00 pm CT on KET2
  • Tuesday April 30, 2024 12:00 am ET on KET2
  • Monday April 29, 2024 11:00 pm CT on KET2
  • Tuesday April 30, 2024 7:00 pm ET on KETWORLD
  • Tuesday April 30, 2024 6:00 pm CT on KETWORLD
  • Wednesday May 1, 2024 12:00 am ET on KETWORLD
  • Tuesday April 30, 2024 11:00 pm CT on KETWORLD
  • Wednesday May 1, 2024 8:00 am ET on KETWORLD
  • Wednesday May 1, 2024 7:00 am CT on KETWORLD

Making North America: Human - S42 E22

Premiered On: 11/18/2015

From Ice Age to oil boom, discover the challenges faced and the wealth uncovered as humans take over the continent.

  • Wednesday May 1, 2024 10:00 pm ET on KET
  • Wednesday May 1, 2024 9:00 pm CT on KET
  • Thursday May 2, 2024 5:00 pm ET on KET
  • Thursday May 2, 2024 4:00 pm CT on KET
  • Friday May 3, 2024 3:00 am ET on KET
  • Friday May 3, 2024 2:00 am CT on KET
  • Sunday May 5, 2024 7:00 pm ET on KET2
  • Sunday May 5, 2024 6:00 pm CT on KET2
  • Tuesday May 7, 2024 12:00 am ET on KET2
  • Monday May 6, 2024 11:00 pm CT on KET2
  • Tuesday May 7, 2024 5:00 am ET on KET2
  • Tuesday May 7, 2024 4:00 am 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 May 8, 2024 10:00 pm ET on KET
  • Wednesday May 8, 2024 9:00 pm CT on KET
  • Thursday May 9, 2024 5:00 pm ET on KET
  • Thursday May 9, 2024 4:00 pm CT on KET
  • Friday May 10, 2024 3:00 am ET on KET
  • Friday May 10, 2024 2:00 am CT on KET
  • Sunday May 12, 2024 7:00 pm ET on KET2
  • Sunday May 12, 2024 6:00 pm CT on KET2
  • Tuesday May 14, 2024 12:00 am ET on KET2
  • Monday May 13, 2024 11:00 pm CT on KET2
  • Tuesday May 14, 2024 5:00 am ET on KET2
  • Tuesday May 14, 2024 4:00 am CT on KET2

Secrets in Your Data - S51 E7

Alok Patel takes a look at what happens to the personal data shared on social media and efforts to maximize benefits without compromising personal privacy.

  • Wednesday May 15, 2024 9:00 pm ET on KET
  • Wednesday May 15, 2024 8:00 pm CT on KET
  • Thursday May 16, 2024 5:00 pm ET on KET
  • Thursday May 16, 2024 4:00 pm CT on KET
  • Friday May 17, 2024 2:00 am ET on KET
  • Friday May 17, 2024 1:00 am CT on KET
  • Sunday May 19, 2024 7:00 pm ET on KET2
  • Sunday May 19, 2024 6:00 pm CT on KET2
  • Tuesday May 21, 2024 12:00 am ET on KET2
  • Monday May 20, 2024 11:00 pm CT on KET2

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 22, 2024 9:00 pm ET on KET
  • Wednesday May 22, 2024 8:00 pm CT on KET
  • Thursday May 23, 2024 5:00 pm ET on KET
  • Thursday May 23, 2024 4:00 pm CT on KET
  • Friday May 24, 2024 2:00 am ET on KET
  • Friday May 24, 2024 1:00 am CT on KET
  • Sunday May 26, 2024 7:00 pm ET on KET2
  • Sunday May 26, 2024 6:00 pm CT on KET2
Jump to Upcoming Airdates

Recent

Weathering the Future - S50 E5

  • Monday April 22, 2024 4:00 pm ET on KETWORLD
  • Monday April 22, 2024 3:00 pm CT on KETWORLD

Making North America: Origins - S42 E20

  • Wednesday April 24, 2024 8:00 am ET on KETWORLD
  • Wednesday April 24, 2024 7:00 am CT on KETWORLD
  • Wednesday April 24, 2024 12:00 am ET on KETWORLD
  • Tuesday April 23, 2024 11:00 pm CT on KETWORLD
  • Tuesday April 23, 2024 7:00 pm ET on KETWORLD
  • Tuesday April 23, 2024 6:00 pm CT on KETWORLD
  • Tuesday April 23, 2024 5:00 am ET on KET2
  • Tuesday April 23, 2024 4:00 am CT on KET2
  • Tuesday April 23, 2024 12:00 am ET on KET2
  • Monday April 22, 2024 11:00 pm CT on KET2
  • Sunday April 21, 2024 7:00 pm ET on KET2
  • Sunday April 21, 2024 6:00 pm CT on KET2
  • Friday April 19, 2024 3:00 am ET on KET
  • Friday April 19, 2024 2:00 am CT on KET
  • Thursday April 18, 2024 5:00 pm ET on KET
  • Thursday April 18, 2024 4:00 pm CT on KET
  • Wednesday April 17, 2024 10:00 pm ET on KET
  • Wednesday April 17, 2024 9:00 pm CT on KET

Ancient Maya Metropolis - S48 E22

  • Wednesday April 17, 2024 8:00 am ET on KETWORLD
  • Wednesday April 17, 2024 7:00 am CT on KETWORLD
  • Wednesday April 17, 2024 12:00 am ET on KETWORLD
  • Tuesday April 16, 2024 11:00 pm CT on KETWORLD
  • Tuesday April 16, 2024 7:00 pm ET on KETWORLD
  • Tuesday April 16, 2024 6:00 pm CT on KETWORLD
  • Tuesday April 16, 2024 5:00 am ET on KET2
  • Tuesday April 16, 2024 4:00 am CT on KET2
  • Tuesday April 16, 2024 12:00 am ET on KET2
  • Monday April 15, 2024 11:00 pm CT on KET2
  • Sunday April 14, 2024 7:00 pm ET on KET2
  • Sunday April 14, 2024 6:00 pm CT on KET2
  • Friday April 12, 2024 3:00 am ET on KET
  • Friday April 12, 2024 2:00 am CT on KET
  • Thursday April 11, 2024 5:00 pm ET on KET
  • Thursday April 11, 2024 4:00 pm CT on KET
  • Wednesday April 10, 2024 10:00 pm ET on KET
  • Wednesday April 10, 2024 9:00 pm CT on KET

Secrets of the Forbidden City - S44 E15

  • Friday April 5, 2024 3:00 am ET on KET
  • Friday April 5, 2024 2:00 am CT on KET
  • Wednesday April 3, 2024 10:00 pm ET on KET
  • Wednesday April 3, 2024 9:00 pm CT on KET

Great American Eclipse - S51 E6

  • Wednesday April 10, 2024 8:00 am ET on KETWORLD
  • Wednesday April 10, 2024 7:00 am CT on KETWORLD
  • Wednesday April 10, 2024 12:00 am ET on KETWORLD
  • Tuesday April 9, 2024 11:00 pm CT on KETWORLD
  • Tuesday April 9, 2024 7:00 pm ET on KETWORLD
  • Tuesday April 9, 2024 6:00 pm CT on KETWORLD
  • Tuesday April 9, 2024 5:00 am ET on KET2
  • Tuesday April 9, 2024 4:00 am CT on KET2
  • Tuesday April 9, 2024 12:00 am ET on KET2
  • Monday April 8, 2024 11:00 pm CT on KET2
  • Monday April 8, 2024 8:00 am ET on KETWORLD
  • Monday April 8, 2024 7:00 am CT on KETWORLD
  • Monday April 8, 2024 12:00 am ET on KETWORLD
  • Sunday April 7, 2024 11:00 pm CT on KETWORLD
  • Sunday April 7, 2024 8:00 pm ET on KETWORLD
  • Sunday April 7, 2024 7:00 pm CT on KETWORLD
  • Sunday April 7, 2024 7:00 pm ET on KET2
  • Sunday April 7, 2024 6:00 pm CT on KET2
  • Friday April 5, 2024 1:00 am ET on KET
  • Friday April 5, 2024 12:00 am CT on KET
  • Thursday April 4, 2024 5:00 pm ET on KET
  • Thursday April 4, 2024 4:00 pm CT on KET
  • Wednesday April 3, 2024 8:00 pm ET on KET
  • Wednesday April 3, 2024 7:00 pm CT on KET

A.I. Revolution - S51 E5

  • Wednesday April 3, 2024 5:00 pm ET on KET
  • Wednesday April 3, 2024 4:00 pm CT on KET
  • Wednesday April 3, 2024 8:00 am ET on KETWORLD
  • Wednesday April 3, 2024 7:00 am CT on KETWORLD
  • Wednesday April 3, 2024 12:00 am ET on KETWORLD
  • Tuesday April 2, 2024 11:00 pm CT on KETWORLD
  • Tuesday April 2, 2024 7:00 pm ET on KETWORLD
  • Tuesday April 2, 2024 6:00 pm CT on KETWORLD
  • Tuesday April 2, 2024 12:00 am ET on KET2
  • Monday April 1, 2024 11:00 pm CT on KET2
  • Sunday March 31, 2024 7:00 pm ET on KET2
  • Sunday March 31, 2024 6:00 pm CT on KET2
  • Friday March 29, 2024 2:00 am ET on KET
  • Friday March 29, 2024 1:00 am CT on KET
  • Thursday March 28, 2024 5:00 pm ET on KET
  • Thursday March 28, 2024 4:00 pm CT on KET
  • Wednesday March 27, 2024 9:00 pm ET on KET
  • Wednesday March 27, 2024 8:00 pm CT on KET

Polar Extremes - S47 E1

  • Wednesday March 27, 2024 8:00 am ET on KETWORLD
  • Wednesday March 27, 2024 7:00 am CT on KETWORLD
  • Wednesday March 27, 2024 12:00 am ET on KETWORLD
  • Tuesday March 26, 2024 11:00 pm CT on KETWORLD
  • Tuesday March 26, 2024 7:00 pm ET on KETWORLD
  • Tuesday March 26, 2024 6:00 pm CT on KETWORLD

Why Bridges Collapse - S46 E18

  • Sunday March 24, 2024 7:00 pm ET on KET2
  • Sunday March 24, 2024 6:00 pm CT on KET2
Top

Explore KET