Horizon
Season 7 Episode 22 - Crown of Thorns
7.4 ?
1964
Documentary
The population explosion of the Crown of Thorns starfish is investigated by Horizon.
Episodes in Season 7
1
Just Another World
60 min
2
Henry Royce, Mechanic
60 min
3
A Disease of Our Time - Stress
60 min
4
A Disease of Our Time - Heart Attacks
60 min
5
Sex and Sexuality
60 min
6
Whose Coast?
60 min
7
A Much Wanted Child
60 min
8
The Expert Witness
60 min
9
After the Iron Age
60 min
10
Let the Therapy Fit the Crime
60 min
11
The World Outside
60 min
12
In the Beginning was the Word
60 min
13
The Drifting of the Continents
60 min
14
A Case of Priority
60 min
15
The Fretful Elements
60 min
16
One Man's Meat
60 min
17
Only Skin Deep
60 min
18
Wolves and Wolfmen
60 min
19
A Measure of Uncertainty
60 min
20
The Manhunters
60 min
21
Don't Get Sick in America
60 min
22
Crown of Thorns
60 min
NOW PLAYING
23
Noah's Ark in Kensington
60 min
24
Virus
60 min
25
Water, Water
60 min
26
All Creatures Great and Small
60 min
27
A Child for a Lifetime
60 min
28
Something for Our Children
60 min
29
Million Ton Tanker
60 min
30
The Insect War
60 min
31
The Savage Mind
60 min
32
Tanks
60 min
33
Mind the Machine
60 min
34
Square Pegs
60 min
35
Earthquakes, The City that Waits to Die
60 min
36
The Man who Talks to Frogs
60 min
37
The Gargantuan Triumph of Science
60 min
