Join or Sign In
Sign in to customize your TV listings
By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.
Horizon Season 25 Episodes
Season 25 Episode Guide
20 Episodes 1989 - 1989
Episode 1
The Book of Man
Episode 2
The Poison That Waits
Episode 3
Perils of the Deep
Episode 4
Smart Weapons
Episode 5
Wasting the Alps
Episode 6
In the Last Resort
Episode 7
Gaze in Wonder
Episode 8
In My Lifetime?
Glyn Worsnip investigates potential cures for the brain disease with which he was diagnosed in 1986.
Episode 9
Concerto
Episode 10
Black Schizophrenia
Episode 11
Trial in the Jungle
Episode 12
Who Will Make Me Better?
Episode 13
A Wonderful Life
Episode 14
Why Buildings Make You Sick
Episode 15
Jubilee
On its 25th anniversary, Horizon looks back over its past films, some of which have had a profound affect on the scientific world.
Episode 16
Crash
Episode 17
The New Sixth Sense
Episode 18
Clive Sinclair: The Anatomy of an Inventor
Episode 19
Newpin: A Lifeline
Episode 20
Time of Darkness