Air date: 1974-01-07

Runtime: 60 min

This episode of Horizon explains how our body fights infections and cancers and brings us up-to-date on recent research in immunology.

Air date: 1974-01-14

Runtime: 60 min

This episode of Horizon is about various experiments on migratory birds and homing pigeons to try and discover how they navigate.

Air date: 1974-01-21

Runtime: 60 min

Horizon reports on the British Open University and how it operates.

Air date: 1974-01-28

Runtime: 60 min

Horizon investigates how Britain has hunted fish in the past and how improved fish catching techniques have severely reduced fish stocks.

Air date: 1974-02-04

Runtime: 60 min

This episode of Horizon is about the history of the bicycle and the possibility of it being able to ease the traffic problems in Britain.

Air date: 1974-02-11

Runtime: 60 min

In this episode, Horizon looks at connections between crime and poor housing design in the USA.

Air date: 1974-02-18

Runtime: 60 min

Horizon investigates reports of abuse of the Colorado river in the USA.

Air date: 1974-03-04

Runtime: 60 min

Horizon examines the British Hudson Institute's methods and predictions for the future of economics.

Air date: 1974-03-11

Runtime: 60 min

In this Horizon episode, we look at attempts by scientists to solve the energy crisis of future by building nuclear fusion reactors.

Air date: 1974-04-22

Runtime: 60 min

In this report, Prof. John Maynard Smith looks back at some of the subjects Horizon has presented since 1964.

Air date: 1974-04-29

Runtime: 60 min

Horizon looks back at the discovery and the development of anesthesia.

Air date: 1974-05-06

Runtime: 60 min

This Horizon episode is about the search for quarks, thought to be the substance of which electrons, protons, and neutrons are made of.

Air date: 1974-05-13

Runtime: 60 min

Horizon investigates captive animal breeding to prevent extinction of animal species in the wild.

Air date: 1974-06-03

Runtime: 60 min

Horizon reports on bridges in Britain...how safe are they?

Air date: 1974-06-10

Runtime: 60 min

Documentary about the origins of life which attempts to find out what happened in the one billion years before fossil evidence begins.

Air date: 1974-06-10

Runtime: 60 min

Horizon investigates the subject of sleep in Britain and the USA.

Air date: 1974-06-24

Runtime: 60 min

In this episode of Horizon, you learn about transferring the basis of modern industry production from human skills to computer programmed machines.

Air date: 1974-07-01

Runtime: 60 min

In this report, Horizon presents the state of hill farming in Wales.

Air date: 1974-07-08

Runtime: 60 min

This documentary of Horizon reports on the discovery of the structure of DNA in 1953 by Dr. Francis Crick and Prof. James Watson.

Air date: 1974-07-15

Runtime: 60 min

In this episode, Horizon reports on the rising number of imigrant doctors working in the National Health System of Britain.

Air date: 1974-07-22

Runtime: 60 min

Horizon explores the technological and economic reasons for the mining revival in Britain.

Air date: 1974-07-29

Runtime: 60 min

Horizon reports on the beef crisis and rising prices.

Air date: 1974-08-05

Runtime: 60 min

Horizon brings you a report by Tom Harrison on anti-nazi propaganda in Britain during World War II.

Air date: 1974-08-12

Runtime: 60 min

This episode of Horizon investigates the role that hormones play in the stages of mammalian sexual development.

Air date: 1974-09-02

Runtime: 60 min

Horizon investigates some of the risks and problems involved in bringing oil from the North Sea ashore.

Air date: 1974-10-28

Runtime: 60 min

This report by Horizon explores how far people are prepared to suppress their own moral scruples in the face of necessity to obey authority.

Air date: 1974-11-04

Runtime: 60 min

Horizons reviews the scientific work of Americans in the field of research in communication with animals.

Air date: 1974-11-11

Runtime: 60 min

Horizon presents Dr. Schumacher's theory that use of modern technology could make the working week a creative experience.

Air date: 1974-11-25

Runtime: 60 min

Sixty years ago a Dutch scientist discovered a phenomenon that overturned the electrical rule book. By cooling certain metals to incredibly low temperatures he found they could continue to carry an electric current for ever, even when the power supply was switched off. Today, developments of these metals - called superconductors-have led to trains that fly, magnets that could depollute rivers and machines that promise cheaper power.

Air date: 1974-12-09

Runtime: 60 min

This story by Horizon reconstructs the true life story of Joey Deacon.

Air date: 1974-12-16

Runtime: 60 min

Horizon investigates the developments and research in forestry which may now help to overcome shortage of timber.

Air date: 1974-12-23

Runtime: 60 min

This documentary by Horizon reports on the development of cinematographic special effects from 1890's to date.

Air date: 1974-12-30

Runtime: 60 min

Horizon presents a dramatized documentary on the rise to power of Trofim Denisovich Lysenko, a young Ukrainian agriculturalist.