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The Ghost Tree: Bringing Back the American Chestnut

Billions of American chestnut trees once shaped life in Appalachia, but a foreign fungus erased them in a matter of decades. Today, only sickly sprouts remain — ghosts of a vanished ecosystem. Sara Fern Fitzsimmons and The American Chestnut Foundation are racing to breed resistance and restore the tree's ecological role. It’s slow, painstaking work — but it may hold the key to revival.
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Clip Season 2 Episode 6 Length 08:15 Premiere: 07/30/25

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Specials

Season 2 Episodes

Vanishing Act
S2 E6 Length 55:39 Premiere Date 07/30/25

Dammed If You Do
S2 E5 Length 55:08 Premiere Date 07/23/25

The Honey Trap
S2 E4 Length 55:09 Premiere Date 07/16/25

Dressed to Kill
S2 E3 Length 55:09 Premiere Date 07/09/25

The Enemy of My Enemy
S2 E2 Length 55:13 Premiere Date 07/02/25

Shelf Life
S2 E1 Length 55:07 Premiere Date 06/25/25

Episode 6 Preview
Preview Length 00:30 Premiere Date 07/30/25

Fossils in the Asphalt: Unearthing LA’s Ancient Past
Clip Length 03:05 Premiere Date 07/30/25

Orca SOS: Sniffing Out Clues to Save the Southern Residents
Clip Length 03:07 Premiere Date 07/30/25

The Ghost Tree: Bringing Back the American Chestnut
Clip Length 08:15 Premiere Date 07/30/25

Can We Live with Giants?
Clip Length 05:14 Premiere Date 07/30/25

The Northern White Rhino Rescue Mission
Clip Length 11:04 Premiere Date 07/30/25

Season 2 Preview
Preview Length 00:30 Premiere Date 06/25/25

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The Honey Trap - S2 E4

Shane investigates the future of bees, from honey bees to wild native species.

  • Sunday August 30, 2026 10:00 pm ET on KET2
  • Sunday August 30, 2026 9:00 pm CT on KET2
  • Tuesday September 1, 2026 4:00 am ET on KET2
  • Tuesday September 1, 2026 3:00 am CT on KET2

Dammed If You Do - S2 E5

A journey down the Colorado River reveals the ripple effects of humanity's quest to conquer water.

  • Sunday September 6, 2026 10:00 pm ET on KET2
  • Sunday September 6, 2026 9:00 pm CT on KET2
  • Tuesday September 8, 2026 4:00 am ET on KET2
  • Tuesday September 8, 2026 3:00 am CT on KET2

Vanishing Act - S2 E6

Tracing the arc of extinction from prehistory to the present, from fossils entombed in tar to cells frozen in hope.

  • Sunday September 13, 2026 10:00 pm ET on KET2
  • Sunday September 13, 2026 9:00 pm CT on KET2
  • Tuesday September 15, 2026 4:00 am ET on KET2
  • Tuesday September 15, 2026 3:00 am CT on KET2
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Recent

Dressed to Kill - S2 E3

  • Tuesday August 25, 2026 4:00 am ET on KET2
  • Tuesday August 25, 2026 3:00 am CT on KET2
  • Sunday August 23, 2026 10:00 pm ET on KET2
  • Sunday August 23, 2026 9:00 pm CT on KET2

The Enemy of My Enemy - S2 E2

  • Tuesday August 4, 2026 4:00 am ET on KET2
  • Tuesday August 4, 2026 3:00 am CT on KET2
  • Sunday August 2, 2026 10:00 pm ET on KET2
  • Sunday August 2, 2026 9:00 pm CT on KET2

Shelf Life - S2 E1

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