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Human Worlds

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Season 1 Episodes

Human Worlds
S1 E5 Length 55:55 Premiere Date 08/03/22

Desert Worlds
S1 E4 Length 55:55 Premiere Date 07/27/22

Seasonal Worlds
S1 E3 Length 55:55 Premiere Date 07/20/22

Water Worlds
S1 E2 Length 55:55 Premiere Date 07/13/22

Tropical Worlds
S1 E1 Length 55:54 Premiere Date 07/06/22

How Do You Pollinate 40 Million Almond Trees?
Clip Length 02:33 Premiere Date 08/03/22

One Sharpshooter Way to Stop an Invasive Plant
Clip Length 02:20 Premiere Date 08/03/22

How "Weeds" Grow in the Sidewalk
Clip Length 02:32 Premiere Date 08/03/22

Seeds that Literally Run Away
Clip Length 02:27 Premiere Date 08/03/22

The Green Planet - Teaser
Preview Length 00:30 Premiere Date 07/06/22

Official Preview
Preview Length 00:30 Premiere Date 07/06/22

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Water Worlds - S1 E2

Sir David Attenborough discovers bizarre and beautiful water plants, which use nature's super-glue, counting, and killer spikes to get a leaf up. Some escape from animals by rolling away while others create bubbles in a magical river in Brazil.

  • Sunday April 12, 2026 10:00 pm ET on KET2
  • Sunday April 12, 2026 9:00 pm CT on KET2
  • Tuesday April 14, 2026 4:00 am ET on KET2
  • Tuesday April 14, 2026 3:00 am CT on KET2

Seasonal Worlds - S1 E3

Sir David Attenborough reveals the surprising and dramatic effects of the four seasons on plant life. To survive the challenges each season presents, plants must use strategy, deception and remarkable feats of engineering.

  • Sunday April 19, 2026 10:00 pm ET on KET2
  • Sunday April 19, 2026 9:00 pm CT on KET2
  • Tuesday April 21, 2026 4:00 am ET on KET2
  • Tuesday April 21, 2026 3:00 am CT on KET2

Desert Worlds - S1 E4

Plants can spend decades waiting for rain or travel to find it in the hostile world of the desert. Survival tactics include using weapons, camouflage and forming surprising alliances with animals.

  • Sunday April 26, 2026 10:00 pm ET on KET2
  • Sunday April 26, 2026 9:00 pm CT on KET2
  • Tuesday April 28, 2026 4:00 am ET on KET2
  • Tuesday April 28, 2026 3:00 am CT on KET2

Human Worlds - S1 E5

David Attenborough reveals how humans are helping plants, many of which face extinction, including projects in Africa and rebuilding a Brazilian rainforest tree by tree.

  • Sunday May 3, 2026 10:00 pm ET on KET2
  • Sunday May 3, 2026 9:00 pm CT on KET2
  • Tuesday May 5, 2026 4:00 am ET on KET2
  • Tuesday May 5, 2026 3:00 am CT on KET2
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Tropical Worlds - S1 E1

  • Tuesday April 7, 2026 4:00 am ET on KET2
  • Tuesday April 7, 2026 3:00 am CT on KET2
  • Sunday April 5, 2026 10:00 pm ET on KET2
  • Sunday April 5, 2026 9:00 pm CT on KET2
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