- 1 Learning from Machines
Horizon looks into the principles behind machines and investigates why they are so successful.
Air Date: 1965-01-06
- 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.
Air Date: 1965-01-20
- 3 Star Gazers
Horizon explores American plans to launch a space observatory to map the universe and learn how stars are created.
Air Date: 1965-02-03
- 4 Science and Art
Horizon looks at the relationship between science and art, and also explores artists attitudes towards science.
Air Date: 1965-02-17
- 5 The Great Computer Scandal
Horizon investigates the states of big research computers in Britain. Also, Horizon looks at the H-Bomb Detectors and how British scientists have developed a nuclear explosion detector which has changed the political outlook for nuclear test controls.
Air Date: 1965-03-03
- 6 Title Unknown - 17 March 1965
The episode was shot from a biplane taking off and flying over the CERN Nuclear Physics Laboratory in Switzerland. Colin Riach interviews Dr. Lipman from the Rutherford High Energy Laboratory where an experiment is running to find out if there is a fifth force in the Universe. Colin Riach also interviews De Vos by Gordon Rattray Taylor on his theories about mental illness and geographical location.
Air Date: 1965-03-17
- 7 Title Unknown - 31 March 1965
Prof. Andrade presents a tribute to Robert Hooke: architect, astronomer, geologist, and meteorologist who discovered the cell. This episode also includes a report on a 36 year study of the cell wall by Prof. Preston.
Air Date: 1965-03-31
- 8 Title Unknown - 14 April 1965
Horizon considers the safety of 'The pill'.
Air Date: 1965-04-14
- 9 Title Unknown - 12 May 1965
This episode features an atomic bomb exploding into a mushroom cloud. Also, Horizon reports on the work of Dr. Homi Bhabha, head of India's Atomic Research center, and his work on atomic bombs.
Air Date: 1965-05-12
- 10 Title Unknown - 26 May 1965
Horizon interviews Dr. Lawther about his research into air pollution. He demonstrates various models and experiments on the constrictions of the lungs caused by air pollution. This episode also features a talk by Dr. Norman Dibelius of the General Electrics Company about his research into possibility of fitting man with artificial gills to enable them to work under water.
Air Date: 1965-05-26
- 11 Title Unknown - 09 June 1965
Horizon looks at Prof. Perry Gilbert's research on captured sharks and meets with the eminent physiologist Sir Henry Dale as he celebrates his 90th birthday and looks back on his career in medical research.
Air Date: 1965-06-09
- 12 Title Unknown - 23 June 1965
Horizon looks into the study of a total eclipse, and reports on a new machine and its potential to teach deaf children to speak.
Air Date: 1965-06-23
- 13 Dr. Joseph Needham
This episode of Horizon features Dr. Joseph Needham, an eminent scientist and humanist who is perhaps the greatest living authority on China.
Air Date: 1965-07-14
- 14 Title Unknown - 28 July 1965
Desmond Morris interviews naturalist George Schaller about his work with gorillas studying their behavior in the wild, and work studying tigers in the wild.
Air Date: 1965-07-28
- 15 Certain of Uncertainty
The four men who opened up a new field of physics: Max Born, Paul Dirac, Werner Heisenberg and George Thompson meet and discuss topic with John Charap at the annual science conference in Lindau, Germany.
Air Date: 1965-08-11
- 16 Title Unknown - 25 August 1965
Prof. Harold Edgerton of the Massachusetts Institute of Technology speaks about his ultra high speed photography.
Air Date: 1965-08-25
- 17 Fuel for the Future
Horizon interviews Prof. Andrade about his collection of rare scientific books which he was about to sell.
Air Date: 1965-09-08
- 18 Let Newton Be
On the 300th anniversary of Isaac Newton's greatest year of discovery, one of his most ardent disciples, Prof. Julius Summer-Miller, comes from California to illustrate the excitement of seeing Newton's principles in action.
Air Date: 1965-09-22
- 19 Special Senses
Horizon investigates Dr. Gregory's viaduct experiment which involved looking at an object at night through the arches of a viaduct in order to test the effects of night on the accuracy of human vision.
Air Date: 1965-10-10
- 20 An Affair of the Heart
Horizon explores heart attacks and thrombosis.
Air Date: 1965-10-24
- 21 Ten Thousand Tombs
Horizon probes into the Etruscan tombs in Italy.
Air Date: 1965-11-07
- 22 Title Unknown - 21 November 1965
Horizon profiles the scientist, polymath, and Nobel prize winner Prof. Albert Szent-Gyorgi.
Air Date: 1965-11-21
- 23 The Big Dishes and the Living Stream
Horizon looks into radio telescopes.
Air Date: 1965-12-05
- 24 Title Unknown - 19 December 1965
Professor Charles Vernon Boys gives a Christmas lecture on bubbles.
Air Date: 1965-12-19