S14 · E14

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S14 · E14

The Green Machine

Aug 5, 19771h

Horizon makes an investigation into plant biology.

‹ E13 All episodes E15 ›

Episodes

Feb 18, 1977 · 1h

S14 · E06

Hunters of the Seal

Feb 25, 1977 · 1h

S14 · E07

The Red Planet

Mar 4, 1977 · 1h

S14 · E08

One of Nature's Hotels

Mar 11, 1977 · 1h

S14 · E09

Dawn of the Solar Age

Mar 18, 1977 · 1h

S14 · E10

Genetic Roulette

Apr 1, 1977 · 1h

S14 · E11

The Amazing Doctor Newton

Jul 15, 1977 · 1h

S14 · E12

The Trouble with Medicine

Jul 22, 1977 · 1h

S14 · E13

Silent Speech

Jul 29, 1977 · 1h

S14 · E14

The Green Machine

Aug 5, 1977 · 1h

S14 · E15

The River That Came Clean

Sep 2, 1977 · 1h

S14 · E16

Blueprints in the Bloodstream

Sep 9, 1977 · 1h

S14 · E17

40 Years of Murder

Sep 16, 1977 · 1h

S14 · E18

The Cry for Help

Sep 30, 1977 · 1h

S14 · E19

The Sunspot Mystery

Oct 7, 1977 · 1h

S14 · E20

The Rhine's Revenge

Oct 21, 1977 · 1h

S14 · E21

Icarus' Children

Dec 2, 1977 · 1h

S14 · E22

The Healing Nightmare

Dec 9, 1977 · 1h

S14 · E23

The Great Wine Revolution

Dec 23, 1977 · 1h

The Green Machine

Episodes

A Smile for a Crocodile

The Pill for the People

The Ape That Stood Up

The Human Animal

The Guinea Pig and the Law

Hunters of the Seal

The Red Planet

One of Nature's Hotels

Dawn of the Solar Age

Genetic Roulette

The Amazing Doctor Newton

The Trouble with Medicine

Silent Speech

The Green Machine

The River That Came Clean

Blueprints in the Bloodstream

40 Years of Murder

The Cry for Help

The Sunspot Mystery

The Rhine's Revenge

Icarus' Children

The Healing Nightmare

The Great Wine Revolution