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The Best Episodes of Horizon Season 20

Every episode of Horizon Season 20 ranked from best to worst. Discover the Best Episodes of Horizon Season 20!

Binge this in 1d 0h•Peaking at 5.5/10

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

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Episode Rankings

  1. #1 Fan Favorite
    Horizon Season 20 Episode 4 - How Much Can You Drink?
    5.5/10(13 votes)

    S20:E4

    Horizon examines some of the effects that moderate amounts of alcohol can have on the body.

    Director:Unknown
    Writer:Unknown

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  2. Horizon Season 20 Episode 13 - Killer in the Village
    1.0/10(1 votes)

    S20:E13

    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.

    Director:Unknown
    Writer:Unknown

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  3. Horizon Season 20 Episode 1 - Sizewell Under Pressure
    0.0/10(0 votes)

    S20:E1

    Horizon investigates if Britain should build a United States designed nuclear power station that uses a pressurized water reactor at its core.

    Director:Unknown
    Writer:Unknown

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  4. Horizon Season 20 Episode 2 - The Tropical Time Machine
    0.0/10(0 votes)

    S20:E2

    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.

    Director:Unknown
    Writer:Unknown

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  5. Horizon Season 20 Episode 3 - The Geneva Event
    0.0/10(0 votes)

    S20:E3

    Horizon brings you a report about the discovery of two new, and unimaginably short-lived, subatomic particles called "W" and "Z".

    Director:Unknown
    Writer:Unknown

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  6. Horizon Season 20 Episode 5 - Talking Turtle
    0.0/10(0 votes)

    S20:E5

    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.

    Director:Unknown
    Writer:Unknown

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  7. Horizon Season 20 Episode 6 - What Little Girls are Made of
    0.0/10(0 votes)

    S20:E6

    Horizon investigates the way girls and boys were taught science and related subjects at schools.

    Director:Unknown
    Writer:Unknown

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  8. Horizon Season 20 Episode 7 - British Science - On the Wrong Track?
    0.0/10(0 votes)

    S20:E7

    Horizon reports on the state of scientific research in Britain and the past blunders of the National Research Development Council.

    Director:Unknown
    Writer:Unknown

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  9. Horizon Season 20 Episode 8 - The Great Plains Massacre
    0.0/10(0 votes)

    S20:E8

    In this Horizon documentary, we look back at the event surrounding the near extermination of the North American bison (buffalo) in the 1880's.

    Director:Unknown
    Writer:Unknown

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  10. Horizon Season 20 Episode 9 - Hard Rock
    0.0/10(0 votes)

    S20:E9

    The Horizon episode is about the Carsington Aqueduct Scheme in Derbyshire, England, and the massive excavation problems encountered during construction.

    Director:Unknown
    Writer:Unknown

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  11. Horizon Season 20 Episode 10 - Better Mind the Computer
    0.0/10(0 votes)

    S20:E10

    Horizon presents a look at the current research into artificial computer intelligence.

    Director:Unknown
    Writer:Unknown

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  12. Horizon Season 20 Episode 11 - Madness on Trial
    0.0/10(0 votes)

    S20:E11

    Horizon looks at the mental problem of schizophrenia and how madness is medically diagnosed.

    Director:Unknown
    Writer:Unknown

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  13. Horizon Season 20 Episode 12 - Sixty Minutes to Meltdown
    0.0/10(0 votes)

    S20:E12

    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.

    Director:Unknown
    Writer:Unknown

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  14. Horizon Season 20 Episode 14 - The Case of ESP
    0.0/10(0 votes)

    S20:E14

    n this documentary, Horizon investigates the power of the mind for psychic phenomena; telepathy, clairvoyance, precognition, and psychokinesis.

    Director:Unknown
    Writer:Unknown

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  15. Horizon Season 20 Episode 15 - The Artificial Heart
    0.0/10(0 votes)

    S20:E15

    Horizon investigates the current research into development and use of an artificial heart.

    Director:Unknown
    Writer:Unknown

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  16. Horizon Season 20 Episode 16 - Dr. Priestley and the Breath of Life
    0.0/10(0 votes)

    S20:E16

    This report by Horizon examines the experiments of Joseph Priestly on blood and oxygen in photosynthesis.

    Director:Unknown
    Writer:Unknown

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  17. Horizon Season 20 Episode 17 - Professor Hawking's Universe
    0.0/10(0 votes)

    S20:E17

    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.

    Director:Unknown
    Writer:Unknown

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  18. Horizon Season 20 Episode 18 - The Cruel Choice
    0.0/10(0 votes)

    S20:E18

    Horizon presents a discussion on the use of animals for experiments.

    Director:Unknown
    Writer:Unknown

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  19. Horizon Season 20 Episode 19 - A Child's Guide to Languages
    0.0/10(0 votes)

    S20:E19

    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.

    Director:Unknown
    Writer:Unknown

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  20. Horizon Season 20 Episode 20 - China's Child
    0.0/10(0 votes)

    S20:E20

    Horizon examines how the government of China presents the "one child per family" population policy to the people.

    Director:Unknown
    Writer:Unknown

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  21. Horizon Season 20 Episode 21 - The Earthquake Connection
    0.0/10(0 votes)

    S20:E21

    Horizon investigates today's research into earthquakes and the usefulness of the findings.

    Director:Unknown
    Writer:Unknown

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  22. Horizon Season 20 Episode 22 - Prisoner or Patient?
    0.0/10(0 votes)

    S20:E22

    Horizon presents this documentary on how Britain deals with its mentally ill criminal offenders.

    Director:Unknown
    Writer:Unknown

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  23. Horizon Season 20 Episode 23 - Cancer: The Pattern in the Genes
    0.0/10(0 votes)

    S20:E23

    In this report, Horizon outlines the latest research into cancer with specific reference to oncogenes.

    Director:Unknown
    Writer:Unknown

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  24. Horizon Season 20 Episode 24 - The Academy
    0.0/10(0 votes)

    S20:E24

    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.

    Director:Unknown
    Writer:Unknown

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Season 20 Ratings Summary

"How Much Can You Drink?" is the best rated episode of "Horizon" season 20. It scored 5.5/10 based on 13 votes. Directed by Unknown and written by Unknown, it aired on 2/7/1983. This episode is rated 4.5 points higher than the second-best, "Killer in the Village".