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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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

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

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

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

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.

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

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