Series synopsis
Horizon is a British documentary television series that premiered on BBC Two on February 4, 1964.
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Premise
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Cast and characters
Guest cast
Episodes
This series spans 20 seasons with 620 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 0 | 111 | December 25, 1966 | June 16, 2021 |
| Season 1 | 9 | February 4, 1964 | December 14, 1964 |
| Season 2 | 24 | January 6, 1965 | September 25, 1966 |
| Season 3 | 23 | January 2, 1966 | December 19, 1966 |
| Season 4 | 23 | January 17, 1967 | December 24, 1967 |
| Season 5 | 24 | January 2, 1968 | December 24, 1968 |
| Season 6 | 37 | January 2, 1969 | December 29, 1969 |
| Season 7 | 37 | January 5, 1970 | December 28, 1970 |
| Season 8 | 32 | January 4, 1971 | December 27, 1971 |
| Season 9 | 33 | January 3, 1972 | December 28, 1972 |
| Season 10 | 32 | January 4, 1973 | December 24, 1973 |
| Season 11 | 33 | January 7, 1974 | December 30, 1974 |
| Season 12 | 26 | January 20, 1975 | December 29, 1975 |
| Season 13 | 30 | January 5, 1976 | December 20, 1976 |
| Season 14 | 23 | January 7, 1977 | December 23, 1977 |
| Season 15 | 24 | January 6, 1978 | December 29, 1978 |
| Season 16 | 25 | February 26, 1979 | December 17, 1979 |
| Season 17 | 25 | January 14, 1980 | December 15, 1980 |
| Season 18 | 27 | January 5, 1981 | December 21, 1981 |
| Season 19 | 22 | January 11, 1982 | December 20, 1982 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Horizon Christmas Special: Hand me my Sword, Humphrey It is Christmas Day in the house of Hastings. The time (the 1830s), the place (a suburban Victorian home), and the atmosphere (after the pudding with the children waiting to be entertained) are ripe for father to stun his audience with his knowledge of the world of natural philosophy. It is a world of exploding biscuit tins, unpredictable hard-boiled eggs, singing drainpipes, and enough amateur science to make young enthusiasts reach for their bunsen burners, and mothers for their smelling salts. |
December 25, 1966 |
| 2 |
The Case of the Ancient Astronauts In this special episode, Horizon reports on Erich von Däniken and his theories about astronauts visiting Earth long ago. |
November 25, 1977 |
| 3 |
The Mind's Eye This special episode of Horizon shows the latest advances in research into how the visual eyesight system of humans and animals work. |
January 28, 1980 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The World of Buckminster Fuller Horizon follows the work of R. Buckminster Fuller and his research of the geodesic dome. |
February 4, 1964 |
| 2 |
Pesticides and Posterity Dr. Frank Darling and Dr. Eric Edson discuss different environmental priorities. |
May 30, 1964 |
| 3 |
A Candle to Nature A reconstruction of a Michael Faraday lecture last given in December 1860. |
June 27, 1964 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Learning from Machines At a time when the use of teaching machines is fast expanding, Horizon looks at the principles behind them and enquires into their success |
January 6, 1965 |
| 2 |
The Technique of Change Horizon profiles the Bell Laboratories in the United States. They are one of the most important research and development centers where more than 4000 scientists work with a budget of one hundred million pounds every year. Horizon investigates the possibility of setting up a similar research station in Britain. |
January 20, 1965 |
| 3 |
Star Gazers Horizon explores American plans to launch a space observatory to map the universe and learn how stars are created. |
February 3, 1965 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Windows of the Soul / Elixir of Youth Horizon follows experiments on the eyes being undertaken at the Department of Psychology at the University of Chicago. The purpose of the experiments are to discover if our eyes can tell us things we might prefer to keep secret. In Romania, more than forty thousand people have been given Gerovital H3, in the belief that it will make them younger. |
January 2, 1966 |
| 2 |
The Troubled Mind / Triple-A. S. Horizon explores an American mental hospital, observing schizophrenic patients under treatment with remarkable new drugs. The American equivalent of the British Association, the American Association for the Advancement of Science, met in Berkeley, California between Christmas and New Year. |
January 16, 1966 |
| 3 |
A Man of Two Visions / The Scientist Applied A profile of Dr. Albert Copley, the famous hematologist, who is also known as an accomplished artist under the name of Alcopley. For a country striving to raise its productivity, the supply of applied scientists is tremendously important. Professor S. A. Tobias, an engineer, and Lord Todd, ex-chairman of the Scientific Advisory Council, discuss the problems of educating them and their importance in society. |
January 30, 1966 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Sons of Cain Horizon probes into whether aggressiveness is our birthright and can society live without violence? |
January 17, 1967 |
| 2 |
When Is a Body Dead? / How to Win Friends and Influence People Medical advances have made it possible for 'life' to be maintained in an unconscious patient who has irrevocable brain damage and who might also be dependent on artificial aids to circulation and respiration. Is it now meaningless to define 'death' as the cessation of a heart beat? Why do so many people have difficulty In communicating, or in simply getting-on with other people? Psychologists have now begun to analyse aspects of social behaviour in a way which they believe will lead to more pleasant and more effective human relationships. |
January 31, 1967 |
| 3 |
How Best to Make a Man / How Best to Make a Scientist In this episode, Horizon looks at a new school of mathematics and physics near Novosibirsk in Siberia, Russia. This school uses a competition held for Russian school children to qualify new students. |
February 14, 1967 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
An Ingenious Man - Sir H. John Baker Horizon reports on Prof. Sir John Baker who is a distinguished British engineer, tracing his career beginning from his early work on airships. |
January 2, 1968 |
| 2 |
Man's Best Friend This episode covers interviews with surgeons and research workers discussing the need for animal experimentation in medical work. |
January 30, 1968 |
| 3 |
Once a Junkie In England addicts get their heroin, and often cocaine, on the National Health Service: our system has prevented the growth of a drug-based criminal world, but Americans say that our system only worked when we did not have a serious addiction problem. Now we do. Does our present system make it too easy for the casual drug experimenter to become a hard-core addict? Is there anything we can learn from the American situation? |
February 13, 1968 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Inside Every Fat Man Horizon probes into the problems of obesity and investigates cures for obesity using diets and drugs. |
January 2, 1969 |
| 2 |
If Only They Could Speak A report by Horizon examining animal intelligence and looking at the reasons why no other animal has matched man in mental ability. |
January 9, 1969 |
| 3 |
The Miraculous Wonder: The Human Eye Horizon investigates the importance of the eye, diseases of the eye, and current research on sight. |
January 16, 1969 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Just Another World This episode of Horizon centers on the study of the moon rock samples brought back to the earth by the Apollo 11 flight to the moon. |
January 5, 1970 |
| 2 |
Henry Royce, Mechanic Horizon investigates the history of the life and work of Sir Henry Royce, co-founder of the firm Rolls Royce Royce. |
January 12, 1970 |
| 3 |
A Disease of Our Time - Stress This is the first part of a two-part episode on diseases afflicting people today. Horizon looks at the issue of stress on the body. |
January 19, 1970 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Wildlife - The Last Great Battle In this episode, Horizon looks a the efforts of zoos to save animal species from extinction by breeding enough to ensure their survival in captivity |
January 4, 1971 |
| 2 |
Great Ormond Street In this episode, Horizon looks at the renowned British hospital for children, Great Ormond Street, and the Institute of Child Health. |
January 18, 1971 |
| 3 |
A Bulldozer Through Heaven Horizon explores the island of New Guinea and its cultural changes going on there. |
January 25, 1971 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
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. |
January 3, 1972 |
| 2 |
Navajo - The Last Red Indians Horizon explores the American Navajo indian tribe of New Mexico, in the United States. |
January 10, 1972 |
| 3 |
How Much Do You Smell? Why do humans have such a poor sense of smell as compared to animals? Horizon investigates why. |
January 17, 1972 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Epidemic Horizon examines sources of infection that have, and could still, cause epidemics in Britain. |
January 4, 1973 |
| 2 |
Worlds in Collision This episode of Horizon features Immanuel Velikovsky and his theories about the solar system. |
January 11, 1973 |
| 3 |
The Military Necessity Horizon examines the doctrines and military strategies of the rival alliances of NATO and the Warsaw Pact countries. |
January 18, 1973 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
A Matter of Self-Defense This episode of Horizon explains how our body fights infections and cancers and brings us up-to-date on recent research in immunology. |
January 7, 1974 |
| 2 |
Bird Brain - The Mystery of Bird Navigation This episode of Horizon is about various experiments on migratory birds and homing pigeons to try and discover how they navigate. |
January 14, 1974 |
| 3 |
Never Too Late to Learn Horizon reports on the British Open University and how it operates. |
January 21, 1974 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Killer Dust This investigative report by Horizon covers an investigation into the deaths of people who inhaled asbestos dust at Acre Mill, Yorkshire, England. |
January 20, 1975 |
| 2 |
A Time to Be Born Investigates the growing tendency in hospitals to induce childbirth by injecting hormones into mothers. The practice has become increasingly widespread in recent years, and this film asks if induction is desirable, necessary, and safe. |
January 27, 1975 |
| 3 |
The Unsafe Sea This episode of Horizon examines the problems of ship safety in the English Channel. |
February 10, 1975 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Transplant Experience Horizon investigates heart transplant research and techniques perfected and currently used by Dr. Norman Shumway in Britain. |
January 5, 1976 |
| 2 |
Intimate Strangers This episode of Horizon is about symbiosis - the close association between two or more species for their mutual benefit. |
January 12, 1976 |
| 3 |
A Fair Share of What Little We Have Horizon reports on the country of Tanzania, a country that spends only one dollar per person on health services, and more than half of all children born there die before the age of five. |
January 19, 1976 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
A Smile for a Crocodile Horizon documents the life of crocodiles and alligators, and their breeding and exploitation. |
January 7, 1977 |
| 2 |
The Pill for the People Horizon traces the history of the oral contraceptive pill through the last 60 years as told by its pioneers. |
January 14, 1977 |
| 3 |
The Ape That Stood Up Horizon looks at how recent excavations in Africa have changed the accepted ideas of man's origins and age. |
January 21, 1977 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Living Machines Horizon investigates how biologists and engineers are pooling their ideas to understand how nature's machines work. |
January 6, 1978 |
| 2 |
A Land for All Reasons In this episode, Horizon examines the need for an objective approach to land management in Britain. |
January 20, 1978 |
| 3 |
I Don't Want to Be a Burden Horizon explores community and residential services available to the elderly in South Hampton, England. |
January 27, 1978 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Forever Fuel Horizon presents an investigation into the potential and problems of using hydrogen as an alternative to existing fuels. |
February 26, 1979 |
| 2 |
In Search of Pegasus In this program, Horizon looks at the effort and money spent on the horse to produce the perfect specimen. |
March 5, 1979 |
| 3 |
The Keys of Paradise Horizon follows the discovery of a chemical in the brain which has morphine-like properties. |
March 12, 1979 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Ghost Of The Amoco Cadiz Documentary examination of the causes and conditions of the sinking of the Amoco Cadiz oil-tanker, in 1978. |
January 14, 1980 |
| 2 |
You Are Old, Father William Documentary examination on the process of ageing and some things that can be done about the problems of senility in old people. |
January 21, 1980 |
| 3 |
Cleared for Take-Off Documentary which looks at the danger points in flying an airliner on a routine flight from Gatwick to Los Angeles. Danger points are identified and we see research into airtraffic control, aircraft design, the role of the stewardess, avoiding mid-air collisions, electronic flight desks, whirlwind vortices and a new fuel additive that may virtually eliminate the instant conflagrations. |
February 4, 1980 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Spend and Prosper Horizon presents a portrait of the renowned economist John Maynard Keynes, Cambridge Don, and Bloomsbury intellectual. |
January 5, 1981 |
| 2 |
A Whole New Medicine This episode of Horizon is about holistic medicine, health for the whole person, which uses unorthodox therapies. |
January 12, 1981 |
| 3 |
The Qualyub Project Horizon explores the research of Egyptian doctors in trying to control bilharzia, a disease caused by parasitic worms. |
January 19, 1981 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Secret of the Snake Profile of the snake, which presents a close-up look at how it kills and digests it's prey. Also shows how snake venom could be used in the treatment of many human ailments. |
January 11, 1982 |
| 2 |
Finding a Voice An examination of computer-based communication aids for the severely speech impaired. Follows the trip to America of Dick Boydell, a cerebral palsy sufferer without the power of speech. At the Artificial Language Research Laboratory in Michigan, he tries out some of the machines developed the re to help him find his own voice. |
January 18, 1982 |
| 3 |
The Sea Beyond the Dunes Documentary which looks at the wildlife of Pleasant Bay in New England marshland s of the Eastern USA, and their habitat. |
January 25, 1982 |
Production
Release
| Original network/platform | BBC Two |
|---|---|
| First aired | February 4, 1964 |
| Last aired | October 6, 2025 |
| Runtime | 60 minutes |
| Status | Returning Series |
| Schedule | Thursday at 21:00:00 |