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Horizon

Season 16 · Episode 21

A Treasury of Trees

0.01h 0mNovember 12, 1979

Horizon investigates how the British landscape is changing its appearance with native trees being replaced by imported species.

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Episode 1The Forever Fuel
Episode 2In Search of Pegasus
Episode 3The Keys of Paradise
Episode 4Sweet Solutions
Episode 5Bronze Age Blast-Off
Episode 6The Real Bionic Man
Episode 7A Mediterranean Prospect
Episode 8Elements of Risk
Episode 9Mr. Ludwig's Tropical Dreamland
Episode 10Where Nothing Happens Twice
Episode 11Journey Through the Human Body
Episode 12The Fight to Be Male
Episode 13The Robots Are Coming
Episode 14Mexican Oil Dance
Episode 15Tracks on the Oregon Trail
Episode 16The Race to Reshape Cars
Episode 17Dragnet for Diabetes
Episode 18The Lost Waters of the Nile
Episode 19Survival of the Fastest
Episode 20A Touch of Sensitivity
Episode 21A Treasury of Trees
Episode 22Darkness Visible
Episode 23Uranium Goes Critical
Episode 24The Fat in the Fire
Episode 25Decade