S20E1 - Sizewell Under Pressure
Horizon investigates if Britain should build a United States designed nuclear power station that uses a pressurized water reactor at its core.
Jan. 10, 1983, midnight
S20E2 - The Tropical Time Machine
Horizon presents a report by Dr. Alison Jolly who discusses the country of Madagascar, just off of the west coast of Africa. Madagascar's ecology and conservation programs are in conflict with most third world economies.
Jan. 17, 1983, midnight
S20E3 - The Geneva Event
Horizon brings you a report about the discovery of two new, and unimaginably short-lived, subatomic particles called "W" and "Z".
Jan. 24, 1983, midnight
S20E4 - How Much Can You Drink?
Horizon examines some of the effects that moderate amounts of alcohol can have on the body.
Feb. 7, 1983, midnight
S20E5 - Talking Turtle
In the Horizon documentary, we look new ways of using computers in classroom and to what effect computers in our schools will have in future.
Feb. 14, 1983, midnight
S20E6 - What Little Girls are Made of
Horizon investigates the way girls and boys were taught science and related subjects at schools.
Feb. 21, 1983, midnight
S20E7 - British Science - On the Wrong Track?
Horizon reports on the state of scientific research in Britain and the past blunders of the National Research Development Council.
Feb. 28, 1983, midnight
S20E8 - The Great Plains Massacre
In this Horizon documentary, we look back at the event surrounding the near extermination of the North American bison (buffalo) in the 1880's.
March 7, 1983, midnight
S20E9 - Hard Rock
The Horizon episode is about the Carsington Aqueduct Scheme in Derbyshire, England, and the massive excavation problems encountered during construction.
March 14, 1983, midnight
S20E10 - Better Mind the Computer
Horizon presents a look at the current research into artificial computer intelligence.
March 21, 1983, midnight
S20E11 - Madness on Trial
Horizon looks at the mental problem of schizophrenia and how madness is medically diagnosed.
April 11, 1983, midnight
S20E12 - Sixty Minutes to Meltdown
In this episode, Horizon investigates the nuclear accident which took place in the United States at the Three Mile Island nuclear power plant during March 1979.
April 18, 1983, midnight
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S20E13 - Killer in the Village
In this report, Horizon looks at the spread of the AIDS virus in the United States and their search for the cause and cure of the deadly disease.
April 25, 1983, midnight
S20E14 - The Case of ESP
n this documentary, Horizon investigates the power of the mind for psychic phenomena; telepathy, clairvoyance, precognition, and psychokinesis.
Sept. 26, 1983, midnight
S20E15 - The Artificial Heart
Horizon investigates the current research into development and use of an artificial heart.
Oct. 3, 1983, midnight
S20E16 - Dr. Priestley and the Breath of Life
This report by Horizon examines the experiments of Joseph Priestly on blood and oxygen in photosynthesis.
Oct. 10, 1983, midnight
S20E17 - Professor Hawking's Universe
This episode of Horizon features Prof. Stephen Hawking and how he copes with his severe disability, his scientific career, and his relationship with his students.
Oct. 17, 1983, midnight
S20E18 - The Cruel Choice
Horizon presents a discussion on the use of animals for experiments.
Oct. 24, 1983, midnight
S20E19 - A Child's Guide to Languages
Looks at different ways of teaching a foreign language and contrasts them with the way babies and young children pick up their native language, without formal teaching.
Oct. 31, 1983, midnight
S20E20 - China's Child
Horizon examines how the government of China presents the "one child per family" population policy to the people.
Nov. 7, 1983, midnight
S20E21 - The Earthquake Connection
Horizon investigates today's research into earthquakes and the usefulness of the findings.
Nov. 14, 1983, midnight
S20E22 - Prisoner or Patient?
Horizon presents this documentary on how Britain deals with its mentally ill criminal offenders.
Nov. 28, 1983, midnight
S20E23 - Cancer: The Pattern in the Genes
In this report, Horizon outlines the latest research into cancer with specific reference to oncogenes.
Dec. 5, 1983, midnight
S20E24 - The Academy
Horizon follows group of men and women going through basic training in Federal Bureau of Investigation (FBI) methods at the Academy in the United States.
Dec. 12, 1983, midnight