Horizon
S11E1 · A Matter of Self-Defense
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Episodes
A Matter of Self-Defense
1974-01-07
Bird Brain - The Mystery of Bird Navigation
1974-01-14
Never Too Late to Learn
1974-01-21
The Great Fish Hunt
1974-01-28
Pedal Power
1974-02-04
The Writing on the Wall
1974-02-11
Where Did the Colorado Go?
1974-02-18
The Future Goes Boom
1974-03-04
Fusion: The Energy Promise
1974-03-11
The First Ten Years
1974-04-22
This Yankee Dodge Beats Mesmerism Hollow
1974-04-29
The Hunting of the Quark
1974-05-06
A Noah's Ark for Europe
1974-05-13
Bridges: When It Comes to the Crunch
1974-06-03
Search for Life
1974-06-10
The Secrets of Sleep
1974-06-10
Who Needs Skills?
1974-06-24
Hills of Promise
1974-07-01
The Race for the Double Helix
1974-07-08
The Immigrant Doctors
1974-07-15
Mines, Minerals and Men
1974-07-22
What Price Steak?
1974-07-29
Listen and Be Loyal
1974-08-05
Adam or Eve?
1974-08-12
An Unholy Scramble
1974-09-02
Do as You Are Told
1974-10-28
The First Signs of Washoe
1974-11-04
The Other Way
1974-11-11
The Greatest Advance Since the Wheel?
1974-11-25
Joey
1974-12-09
The Neglected Harvest
1974-12-16
How on Earth Did They Do That?
1974-12-23
The Lysenko Affair
1974-12-30