Air date: 1972-01-03

Runtime: 60 min

In this episode of Horizon, you find out how feasible it is to build a 35 mile long tunnel between Britain and France.

Air date: 1972-01-10

Runtime: 60 min

Horizon explores the American Navajo indian tribe of New Mexico, in the United States.

Air date: 1972-01-17

Runtime: 60 min

Why do humans have such a poor sense of smell as compared to animals? Horizon investigates why.

Air date: 1972-01-31

Runtime: 60 min

This story by Horizon reports on Malaria in the country of Gambia, in West Africa.

Air date: 1972-02-07

Runtime: 60 min

Horizon investigates reports of strange phenomena and about what the scientific theory is about these phenomena.

Air date: 1972-02-14

Runtime: 60 min

Horizon explores if a doctor's treatment of the patient is always in the best interest of the patient.

Air date: 1972-02-21

Runtime: 60 min

In this episode, Horizon looks the the ecological movement, and the resistance against the movement in Britain, and the USA.

Air date: 1972-02-28

Runtime: 60 min

In this report by Horizon, the effect of boring jobs on industrial relations is looked at, along with work and job satisfaction.

Air date: 1972-03-06

Runtime: 60 min

Horizon looks at the life of whales and dolphins, and how they interact with man.

Air date: 1972-03-13

Runtime: 60 min

Horizon investigates the various conceptions of "race" that have arisen since the 17th century.

Air date: 1972-03-20

Runtime: 60 min

Horizon investigates the use of hydroelectric power in Africa, at Lake Kariba, Lake Volta, and Lake Nasser.

Air date: 1972-03-27

Runtime: 60 min

This episode of Horizon follows the expedition of two German naturalists exploring the Northwestern desert of the Sahara in Africa.

Air date: 1972-04-10

Runtime: 60 min

This story by Horizon is about American research into techniques for controlling bodily functions with the mind.

Air date: 1972-04-17

Runtime: 60 min

In this report, Horizon looks at the various aspects of volcanoes and explaining the views of some vulcanologists.

Air date: 1972-05-01

Runtime: 60 min

Horizon presents a study of Thomas Alva Edison and his achievements as an inventor.

Air date: 1972-05-08

Runtime: 60 min

Horizon reviews the history of train accidents and the new safety precautions to prevent them.

Air date: 1972-05-22

Runtime: 60 min

Horizon investigates the threat to the Snowdonia National Park in Britain, from mining companies.

Air date: 1972-06-12

Runtime: 60 min

Horizon reports on modern research in the prevention of tooth decay.

Air date: 1972-07-03

Runtime: 60 min

How do muscles contract and how are they are controlled from the brain through nerve fibers are the subjects of this Horizon episode.

Air date: 1972-07-10

Runtime: 60 min

This episode of Horizon explores bacteria and other creatures that live on our skin and in our hair.

Air date: 1972-07-24

Runtime: 60 min

In this episode by Horizon, we take a look at sexual problems, particularly for impotence, frigidity, and premature ejaculation.

Air date: 1972-07-31

Runtime: 60 min

Horizon explores the development and techniques of brain surgery from the 1950's to present-day in Britain and the USA.

Air date: 1972-10-12

Runtime: 60 min

Horizon reconstructs a day in the life of the old Charing Cross Hospital in Britain just fifty years ago.

Air date: 1972-10-19

Runtime: 60 min

This episode of Horizon looks the how the ice age physically shaped the British landscape.

Air date: 1972-10-26

Runtime: 60 min

This episode of Horizon illustrates the ideas of Prof. W.G. Hoskins on the development of the English landscape from Iron Age times to the present.

Air date: 1972-11-02

Runtime: 60 min

Horizon reports that High Energy Physics shows a pattern of thought that challenges the very roots of commonplace belief.

Air date: 1972-11-09

Runtime: 60 min

This episode of Horizon is about the east coast marshes of America, called the "Wetlands" and the effects of urban development on the wildlife.

Air date: 1972-11-16

Runtime: 60 min

Horizon investigates the research that is going into the ageing process to find out its causes and possible prevention.

Air date: 1972-11-23

Runtime: 60 min

This epidsode of Horizon reports on how a group of zoologists at Oxford Scientific Films in England makes films.

Air date: 1972-11-30

Runtime: 60 min

Horizon documents fire prevention, and fire fighting.

Air date: 1972-12-07

Runtime: 60 min

This episode of Horizon centers on the exploitation of oil in Alaska, and the effects of it on the Eskimoes and the local wildlife.

Air date: 1972-12-21

Runtime: 60 min

Horizon reports on people suffering from kidney diseases and the current forms of treatment.

Air date: 1972-12-28

Runtime: 60 min

Horizon documents how in Europe, they are using water canals for industrial transport, as an alternative to roads.