Einstein’s Thought Experiment

Upcoming

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.

• Sunday June 14, 2026 7:00 pm ET on KET2
• Sunday June 14, 2026 6:00 pm CT on KET2
• Tuesday June 16, 2026 1:00 am ET on KET2
• Tuesday June 16, 2026 12:00 am CT on KET2

Secrets of the Forest - S52 E8

Scientists gather data on how forests work and try to figure out how they can help tackle the twin threats of climate change and species extinction.

• Wednesday June 17, 2026 9:00 pm ET on KET
• Wednesday June 17, 2026 8:00 pm CT on KET
• Thursday June 18, 2026 5:00 pm ET on KET
• Thursday June 18, 2026 4:00 pm CT on KET
• Friday June 19, 2026 2:00 am ET on KET
• Friday June 19, 2026 1:00 am CT on KET
• Sunday June 21, 2026 7:00 pm ET on KET2
• Sunday June 21, 2026 6:00 pm CT on KET2
• Tuesday June 23, 2026 1:00 am ET on KET2
• Tuesday June 23, 2026 12:00 am CT on KET2

Ancient Desert Death Trap - S52 E17

Archaeologists investigate strange Stone Age megastructures in the Arabian desert, built by a mysterious people 9000 years ago.

• Wednesday June 24, 2026 9:00 pm ET on KET
• Wednesday June 24, 2026 8:00 pm CT on KET
• Thursday June 25, 2026 5:00 pm ET on KET
• Thursday June 25, 2026 4:00 pm CT on KET
• Friday June 26, 2026 2:00 am ET on KET
• Friday June 26, 2026 1:00 am CT on KET
• Sunday June 28, 2026 7:00 pm ET on KET2
• Sunday June 28, 2026 6:00 pm CT on KET2
• Tuesday June 30, 2026 1:00 am ET on KET2
• Tuesday June 30, 2026 12:00 am CT on KET2

Athens: Birth of Democracy - S53 E7

Archaeologists investigate the dramatic origins of democracy in ancient Greece 2,500 years ago. Mass graves and ancient ruins where tyrants were murdered shine new light on the birth of a revolutionary form of government.

• Wednesday July 1, 2026 8:00 pm ET on KET
• Wednesday July 1, 2026 7:00 pm CT on KET
• Thursday July 2, 2026 4:00 pm ET on KET
• Thursday July 2, 2026 3:00 pm CT on KET
• Friday July 3, 2026 1:00 am ET on KET
• Friday July 3, 2026 12:00 am CT on KET

Revolutionary War Weapons - S52 E7

American and British archaeologists and historians reveal the technology, innovation and luck that determined the outcomes of key battles of the Revolutionary War.

• Wednesday July 1, 2026 9:00 pm ET on KET
• Wednesday July 1, 2026 8:00 pm CT on KET
• Thursday July 2, 2026 5:00 pm ET on KET
• Thursday July 2, 2026 4:00 pm CT on KET
• Friday July 3, 2026 2:00 am ET on KET
• Friday July 3, 2026 1:00 am CT on KET
• Sunday July 5, 2026 7:00 pm ET on KET2
• Sunday July 5, 2026 6:00 pm CT on KET2
• Tuesday July 7, 2026 1:00 am ET on KET2
• Tuesday July 7, 2026 12:00 am CT on KET2

Black Hole Apocalypse - S45 E1

Premiered On: 01/10/2018

Join astrophysicist and novelist Janna Levin on a mind-blowing voyage to the frontiers of black hole science, which is shining new light on the most powerful and mysterious objects in the universe.

• Wednesday July 8, 2026 9:00 pm ET on KET
• Wednesday July 8, 2026 8:00 pm CT on KET
• Thursday July 9, 2026 5:00 pm ET on KET
• Thursday July 9, 2026 4:00 pm CT on KET
• Friday July 10, 2026 2:00 am ET on KET
• Friday July 10, 2026 1:00 am CT on KET
• Sunday July 12, 2026 7:00 pm ET on KET2
• Sunday July 12, 2026 6:00 pm CT on KET2
• Tuesday July 14, 2026 1:00 am ET on KET2
• Tuesday July 14, 2026 12:00 am CT on KET2

Recent

Alaskan Dinosaurs - S48 E21

• Friday June 12, 2026 2:00 am ET on KET
• Friday June 12, 2026 1:00 am CT on KET
• Thursday June 11, 2026 5:00 pm ET on KET
• Thursday June 11, 2026 4:00 pm CT on KET
• Wednesday June 10, 2026 9:00 pm ET on KET
• Wednesday June 10, 2026 8:00 pm CT on KET

Can Dogs Talk? - S53 E3

• Tuesday June 9, 2026 1:00 am ET on KET2
• Tuesday June 9, 2026 12:00 am CT on KET2
• Sunday June 7, 2026 7:00 pm ET on KET2
• Sunday June 7, 2026 6:00 pm CT on KET2

Great Mammoth Mystery - S49 E3

• Tuesday June 2, 2026 1:00 am ET on KET2
• Tuesday June 2, 2026 12:00 am CT on KET2
• Sunday May 31, 2026 7:00 pm ET on KET2
• Sunday May 31, 2026 6:00 pm CT on KET2
• Friday May 29, 2026 2:00 am ET on KET
• Friday May 29, 2026 1:00 am CT on KET
• Thursday May 28, 2026 5:00 pm ET on KET
• Thursday May 28, 2026 4:00 pm CT on KET
• Wednesday May 27, 2026 9:00 pm ET on KET
• Wednesday May 27, 2026 8:00 pm CT on KET

When Whales Could Walk - S51 E1

• Tuesday May 26, 2026 1:00 am ET on KET2
• Tuesday May 26, 2026 12:00 am CT on KET2
• Sunday May 24, 2026 7:00 pm ET on KET2
• Sunday May 24, 2026 6:00 pm CT on KET2
• Friday May 22, 2026 2:00 am ET on KET
• Friday May 22, 2026 1:00 am CT on KET
• Thursday May 21, 2026 5:00 pm ET on KET
• Thursday May 21, 2026 4:00 pm CT on KET
• Wednesday May 20, 2026 9:00 pm ET on KET
• Wednesday May 20, 2026 8:00 pm CT on KET

Decoding the Universe: Quantum - S51 E14

• Tuesday May 19, 2026 1:00 am ET on KET2
• Tuesday May 19, 2026 12:00 am CT on KET2
• Sunday May 17, 2026 7:00 pm ET on KET2
• Sunday May 17, 2026 6:00 pm CT on KET2
• Friday May 15, 2026 2:00 am ET on KET
• Friday May 15, 2026 1:00 am CT on KET
• Thursday May 14, 2026 5:00 pm ET on KET
• Thursday May 14, 2026 4:00 pm CT on KET
• Wednesday May 13, 2026 9:00 pm ET on KET
• Wednesday May 13, 2026 8:00 pm CT on KET

Decoding the Universe: Cosmos - S51 E8

• Tuesday May 12, 2026 1:00 am ET on KET2
• Tuesday May 12, 2026 12:00 am CT on KET2