Horizon backdrop
Documentary

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 6.0/10

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

Airs on
BBC Two
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons61

All12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061

Episode Rankings

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

    #1 - Sizewell Under Pressure

    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

    Be the first to start the conversation for this episode

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

    #2 - The Tropical Time Machine

    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

    Be the first to start the conversation for this episode

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

    #3 - The Geneva Event

    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

    Be the first to start the conversation for this episode

  4. Horizon Season 20 Episode 4 - How Much Can You Drink?
    6.0/10(11 votes)

    #4 - How Much Can You Drink?

    S20:E4

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #5 - Talking Turtle

    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

    Be the first to start the conversation for this episode

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

    #6 - What Little Girls are Made of

    S20:E6

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

    7. Trending NowTRENDING NOW

    The 20 BEST Episodes of Horizon

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

    #7 - British Science - On the Wrong Track?

    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

    Be the first to start the conversation for this episode

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

    #8 - The Great Plains Massacre

    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

    Be the first to start the conversation for this episode

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

    #9 - Hard Rock

    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

    Be the first to start the conversation for this episode

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

    #10 - Better Mind the Computer

    S20:E10

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #11 - Madness on Trial

    S20:E11

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #12 - Sixty Minutes to Meltdown

    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

    Be the first to start the conversation for this episode

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

    #13 - Killer in the Village

    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

    Be the first to start the conversation for this episode

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

    #14 - The Case of ESP

    S20:E14

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #15 - The Artificial Heart

    S20:E15

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #16 - Dr. Priestley and the Breath of Life

    S20:E16

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #17 - Professor Hawking's Universe

    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

    Be the first to start the conversation for this episode

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

    #18 - The Cruel Choice

    S20:E18

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #19 - A Child's Guide to Languages

    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

    Be the first to start the conversation for this episode

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

    #20 - China's Child

    S20:E20

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #21 - The Earthquake Connection

    S20:E21

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #22 - Prisoner or Patient?

    S20:E22

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #23 - Cancer: The Pattern in the Genes

    S20:E23

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

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

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

    #24 - The Academy

    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

    Be the first to start the conversation for this episode

Season 20 Ratings Summary

"Sizewell Under Pressure" is the best rated episode of "Horizon" season 20. It scored /10 based on 0 votes. Directed by Unknown and written by Unknown, it aired on 1/10/1983. This episode is rated 0.0 points higher than the second-best, "The Tropical Time Machine".