January 4, 1973 9:00 pm
Horizon examines sources of infection that have, and could still, cause epidemics in Britain.
January 11, 1973 9:00 pm
This episode of Horizon features Immanuel Velikovsky and his theories about the solar system.
January 18, 1973 9:00 pm
Horizon examines the doctrines and military strategies of the rival alliances of NATO and the Warsaw Pact countries.
January 25, 1973 9:00 pm
Horizon looks into the problem of deafness in Britain.
February 1, 1973 9:00 pm
No description available.
February 8, 1973 9:00 pm
No description available.
February 15, 1973 9:00 pm
In this documentary by Horizon, we look at chemical warfare and the associated environmental problems that have given science a bad name.
March 1, 1973 9:00 pm
Horizon explores how to make the future livable and prevent the effects of urban sprawl.
March 8, 1973 9:00 pm
Horizon explains acupuncture theories and examines its validity in modern medicine.
March 22, 1973 9:00 pm
Horizon illustrates the Circadian Cycle of your body clock as it relates to physical and mental efficiency.
April 5, 1973 9:00 pm
In this episode, Horizon investigates the chances of survival and chances of a normal life for babies who are born underweight.
April 12, 1973 9:00 pm
This Horizon documentary shows the work of the Cambridge Coral Starfish Research Group off of Port Sudan in the Red Sea.
April 26, 1973 9:00 pm
In this report, Horizon studies the problem of backache and investigates some remarkable new spine research.
May 3, 1973 9:00 pm
Horizon covers Heathrow Airport in England and in particular, the work which is being done to make it safe.
May 17, 1973 9:00 pm
Horizon looks at the phenomena of memory and some recent discoveries about it made by scientists.
May 24, 1973 9:00 pm
Horizon investigates the various ways of dealing with the growing problem of garbage.
June 7, 1973 9:00 pm
In the episode, Horizon investigates modern intensive farming methods.
June 14, 1973 9:00 pm
Horizon takes a realistic look at the new ideas and technology threatening Britain's railway system.
June 21, 1973 9:00 pm
In this Horizon documentary, it deals with the expansion of television in Britain and the USA, especially with the growth of cable television.
June 28, 1973 9:00 pm
A dramatised reconstruction of Dr Freud's treatment of an obsessive neurotic who is frustrated, suicidal and terrified that rats are going to eat his father and girlfriend.
July 5, 1973 9:00 pm
In this episode of Horizon, you will find that many people suffer chronic pain and yet others cannot feel anything.
August 9, 1973 9:00 pm
This report by Horizon examines the work of Sir Alister Hardy who has set up a research unit to examine religious experience.
September 24, 1973 9:00 pm
Horizon presents a portrait of Konrad Lorenz and a review of his career and personal interests.
October 1, 1973 9:00 pm
This episode of Horizon takes a look at the medical and educational treatment of spastics in Britain.
October 8, 1973 9:00 pm
Horizon presents a documentary on the developments in botany resulting in new flowers and the mass production of plants from single cells.
October 15, 1973 9:00 pm
In this episode of Horizon, Prof. John Taylor of the London University looks at the effects of gravity and the forces it exerts on the universe.
October 22, 1973 9:00 pm
Horizon investigates the plight of the Pygmies, on the verge of extinction as a racial group.
October 29, 1973 9:00 pm
This Horizon documentary is a biography of the Danish nuclear physicist, Nils Bohr, and his efforts to internationally control atomic energy.
November 5, 1973 9:00 pm
Horizon looks at the rise in the number of people who smoke and the real health risks.
November 26, 1973 9:00 pm
In this report, Horizon investigates why airplanes crash and shows accident investigators at work analyzing a film of an actual crash.
December 3, 1973 9:00 pm
This episode of Horizon documents the sources, uses, and properties of the element mercury and examines its role in modern society.
December 17, 1973 9:00 pm
No description available
December 24, 1973 9:00 pm
Horizon reports on the inhabitants islands east of New Guinea who have evolved a system of intercommunication called the Kula.