Season 21
Episode 1:
The Intelligence Man
Episode 2:
Microworld!
Episode 3:
A New Green Revolution?
Episode 4:
Spies in the Wires
Episode 5:
Valley of the Inca
Episode 6:
The Conquest of Parasites
Episode 7:
Reflections on a River
Episode 8:
A Normal Face
Episode 9:
Prisoners of Incest
Episode 10:
Signs of the Apes, Songs of the Whales
Episode 11:
Professor Bonner and the Slime Moulds
Episode 12:
The Mind of a Murderer: The Case of the Hillside Strangler
Episode 13:
The Mind of a Murderer: The Mask of Madness
Episode 14:
A Cruel Inheritance
Episode 15:
The Malvern Link
Episode 16:
Contented Cows and Other Animals
Episode 17:
Picking Winners
Episode 18:
The Brain Puzzle
Episode 19:
Global Village
Episode 20:
Ivan
Episode 21:
A Mathematical Mystery Tour
Episode 22:
Supercharged
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Horizon
Overview:
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
First Air Date: 1964-02-04
Genre:
Seasons: 62
Episodes: 1173
Episode Duration: 60 min
Status: Returning Series
Production: N/A
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