Air date: 1969-01-02

Runtime: 60 min

Horizon probes into the problems of obesity and investigates cures for obesity using diets and drugs.

Air date: 1969-01-09

Runtime: 60 min

A report by Horizon examining animal intelligence and looking at the reasons why no other animal has matched man in mental ability.

Air date: 1969-01-16

Runtime: 60 min

Horizon investigates the importance of the eye, diseases of the eye, and current research on sight.

Air date: 1969-01-23

Runtime: 60 min

In this episode, Horizon reports on how in the last 2 years, the desert locust has been breeding in Southern Arabia by the Red Sea.

Air date: 1969-01-30

Runtime: 60 min

Horizon reports on the problems associated with raising and educating children of very high intelligence.

Air date: 1969-02-06

Runtime: 60 min

This episode is a biography of the late professor J. B. S. Haldane whose life is described by his family, friends, and critics.

Air date: 1969-02-13

Runtime: 60 min

Horizon looks into music therapy used in the treatment of mental disorders.

Air date: 1969-02-20

Runtime: 60 min

This investigation by Horizon centers on the problems caused by venerial disease both in detection and cure.

Air date: 1969-02-27

Runtime: 60 min

In scientific circles extra-sensory perception is a subject which has never failed to arouse controversy and skepticism. Cecil King, having spent a lifetime in Fleet Street, discusses, with due caution, a subject which he believes might be of primary importance to scientists in the coming century.

Air date: 1969-03-06

Runtime: 60 min

This report by Horizon examines the reason for a fall in the percentage of school children doing science.

Air date: 1969-03-13

Runtime: 60 min

This episode of Horizon is about advertising, looking at how it works and the application of scientific methods to persuade us to buy.

Air date: 1969-03-20

Runtime: 60 min

Horizon looks into what man has seen and done during 10 years of space exploration.

Air date: 1969-03-27

Runtime: 60 min

Horizon investigates new medical techniques to diagnose and treat unborn infants leading to a higher survival rate.

Air date: 1969-04-03

Runtime: 60 min

Nicholas Kurti, Professor of Physics at the Clarendon Laboratory, Oxford, specializes in the field of low temperature science. He is acknowledged among his friends as an expert in the kitchen.

Air date: 1969-04-10

Runtime: 60 min

This episode of Horizon looks at the communication systems of animals.

Air date: 1969-04-24

Runtime: 60 min

Horizon investigates pollution problems in Britain with sewage and industrial wastes, and at the health risks associated with the pollution.

Air date: 1969-05-01

Runtime: 60 min

In this episode, Horizon examines our attempts to understand one of the oldest inhabitants of the sea, the shark.

Air date: 1969-05-15

Runtime: 60 min

Sebastian Z. de Ferranti gives the Royal Society lecture for 1969 on technological development.

Air date: 1969-05-22

Runtime: 60 min

The US spent $40 billion to put man on the moon, yet the real objectives of the space program remain obscure.

Air date: 1969-05-29

Runtime: 60 min

Horizon reports on the research being carried out in the fields of botany, astronomy, biochemistry, meteorology, and zoology.

Air date: 1969-06-05

Runtime: 60 min

The Honorable A. W. Benn addresses young art and technology students on the implications of increased technology.

Air date: 1969-09-15

Runtime: 60 min

The Honorable A. W. Benn addresses young art and technology students on the implications of increased technology.

Air date: 1969-09-22

Runtime: 60 min

Schizophrenia is an unsolved mystery of modern medicine. Horizon looks at some of the possible explanations and their relevance not only to schizophrenics but to the mystery of the human mind.

Air date: 1969-09-29

Runtime: 60 min

In this episode, Horizon reports on the problems of pain, and the theory put forward that pain is closely connected with personality.

Air date: 1969-10-06

Runtime: 60 min

Horizon explores "man's best friend", the dog, and examines its origins and how its special relationship with men came about.

Air date: 1969-10-13

Runtime: 60 min

Horizon investigates surveys being carried out on British children to test Freud's theories.

Air date: 1969-10-20

Runtime: 60 min

In this episode, Roman Vishniac talks about his study of living things in their natural habitat as his life's work.

Air date: 1969-10-27

Runtime: 60 min

Horizon reports on the research into high-energy physics carried on at C.E.R.N. laboratory located near Geneva, Switzerland.

Air date: 1969-11-03

Runtime: 60 min

The props for this programme are pistols, muskets and, above all, explosives. For 30 years now these are what Colonel Brian Shaw, marksman and lecturer in chemistry, has been using in his now famous lecture on explosives. He gave it once again for Horizon before an invited audience at University College, London.

Air date: 1969-11-10

Runtime: 60 min

A report on current research into cancer and the subsequent knowledge and problems it brings.

Air date: 1969-11-17

Runtime: 60 min

For some time now rhinos have been disturbing the workers in the Tanzanian sugar plantation and ripping open the plastic water pipes to get at the water. These incidents, and the hunting of the rhinos by helicopter, are typical of the increasing conflict between wildlife and man for land in East Africa.

Air date: 1969-11-24

Runtime: 60 min

Horizon investigates the limits of survival under extreme and normal environmental conditions.

Air date: 1969-12-01

Runtime: 60 min

Horizon reports on the development of the Dutch nation's continuing fight against the encroachment of the sea.

Air date: 1969-12-08

Runtime: 60 min

Horizon investigates how drinking affects human behavior.

Air date: 1969-12-15

Runtime: 60 min

Horizon covers a simulated war game of a Middle East crisis, with different teams playing the roles of the major parties involved.

Air date: 1969-12-22

Runtime: 60 min

Horizon explores the problem of feeding the growing world population.

Air date: 1969-12-29

Runtime: 60 min

Horizon investigate the dilemma of whether a scientist should put his loyalty to mankind before his loyalty to his country.