S9E1 - The Missing Link
In this episode of Horizon, you find out how feasible it is to build a 35 mile long tunnel between Britain and France.
Jan. 3, 1972, midnight
S9E2 - Navajo - The Last Red Indians
Horizon explores the American Navajo indian tribe of New Mexico, in the United States.
Jan. 10, 1972, midnight
S9E3 - How Much Do You Smell?
Why do humans have such a poor sense of smell as compared to animals? Horizon investigates why.
Jan. 17, 1972, midnight
S9E4 - The Parasite of Paradise
This story by Horizon reports on Malaria in the country of Gambia, in West Africa.
Jan. 31, 1972, midnight
S9E5 - The Day it Rained Periwinkles
Horizon investigates reports of strange phenomena and about what the scientific theory is about these phenomena.
Feb. 7, 1972, midnight
S9E6 - Are You Doing This for Me Doctor, or Am I Doing It for You?
Horizon explores if a doctor's treatment of the patient is always in the best interest of the patient.
Feb. 14, 1972, midnight
S9E7 - How They Sold Doomsday
In this episode, Horizon looks the the ecological movement, and the resistance against the movement in Britain, and the USA.
Feb. 21, 1972, midnight
S9E8 - For Love or Money?
In this report by Horizon, the effect of boring jobs on industrial relations is looked at, along with work and job satisfaction.
Feb. 28, 1972, midnight
S9E9 - Whales, Dolphins and Men
Horizon looks at the life of whales and dolphins, and how they interact with man.
March 6, 1972, midnight
S9E10 - What Is Race?
Horizon investigates the various conceptions of "race" that have arisen since the 17th century.
March 13, 1972, midnight
S9E11 - The Man-Made Lakes in Africa
Horizon investigates the use of hydroelectric power in Africa, at Lake Kariba, Lake Volta, and Lake Nasser.
March 20, 1972, midnight
S9E12 - Survival in the Sahara
This episode of Horizon follows the expedition of two German naturalists exploring the Northwestern desert of the Sahara in Africa.
March 27, 1972, midnight
S9E13 - Mind Over Body
This story by Horizon is about American research into techniques for controlling bodily functions with the mind.
April 10, 1972, midnight
S9E14 - Out of Volcanoes
In this report, Horizon looks at the various aspects of volcanoes and explaining the views of some vulcanologists.
April 17, 1972, midnight
S9E15 - The Wizard Who Spat on the Floor
Horizon presents a study of Thomas Alva Edison and his achievements as an inventor.
May 1, 1972, midnight
S9E16 - Rail Crash
Horizon reviews the history of train accidents and the new safety precautions to prevent them.
May 8, 1972, midnight
S9E17 - Do You Dig National Parks?
Horizon investigates the threat to the Snowdonia National Park in Britain, from mining companies.
May 22, 1972, midnight
S9E18 - Sorry I Opened My Mouth
Horizon reports on modern research in the prevention of tooth decay.
June 12, 1972, midnight
S9E19 - The Way We Move
How do muscles contract and how are they are controlled from the brain through nerve fibers are the subjects of this Horizon episode.
July 3, 1972, midnight
S9E20 - The Life that Lives on Man
This episode of Horizon explores bacteria and other creatures that live on our skin and in our hair.
July 10, 1972, midnight
S9E21 - Sex Can Be a Problem
In this episode by Horizon, we take a look at sexual problems, particularly for impotence, frigidity, and premature ejaculation.
July 24, 1972, midnight
S9E22 - The Surgery of Violence
Horizon explores the development and techniques of brain surgery from the 1950's to present-day in Britain and the USA.
July 31, 1972, midnight
S9E23 - Hospital, 1922
Horizon reconstructs a day in the life of the old Charing Cross Hospital in Britain just fifty years ago.
Oct. 12, 1972, midnight
S9E24 - When Polar Bears Swam in the Thames
This episode of Horizon looks the how the ice age physically shaped the British landscape.
Oct. 19, 1972, midnight
S9E25 - The Making of the English Landscape
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.
Oct. 26, 1972, midnight
S9E26 - Shadows of Bliss
Horizon reports that High Energy Physics shows a pattern of thought that challenges the very roots of commonplace belief.
Nov. 2, 1972, midnight
S9E27 - The Billion-Dollar Marsh
This episode of Horizon is about the east coast marshes of America, called the "Wetlands" and the effects of urban development on the wildlife.
Nov. 9, 1972, midnight
S9E28 - Do You Sincerely Want a Long Life?
Horizon investigates the research that is going into the ageing process to find out its causes and possible prevention.
Nov. 16, 1972, midnight
S9E29 - The Making of a Natural History Film
This epidsode of Horizon reports on how a group of zoologists at Oxford Scientific Films in England makes films.
Nov. 23, 1972, midnight
S9E30 - Fire
Horizon documents fire prevention, and fire fighting.
Nov. 30, 1972, midnight
S9E31 - Alaskan Pipe-Dream
This episode of Horizon centers on the exploitation of oil in Alaska, and the effects of it on the Eskimoes and the local wildlife.
Dec. 7, 1972, midnight
S9E32 - Their Life in Your Hands
Horizon reports on people suffering from kidney diseases and the current forms of treatment.
Dec. 21, 1972, midnight
S9E33 - Navigating Europe
Horizon documents how in Europe, they are using water canals for industrial transport, as an alternative to roads.
Dec. 28, 1972, midnight