• Air date: 20 Jan '75 26 episodes
      Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
  • List of Episodes (26)
    • 1. The Killer Dust

      20 Jan '75
      This investigative report by Horizon covers an investigation into the deaths of people who inhaled asbestos dust at Acre Mill, Yorkshire, England.
    • 2. A Time to Be Born

      27 Jan '75
      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.
    • 3. The Unsafe Sea

      10 Feb '75
      This episode of Horizon examines the problems of ship safety in the English Channel.
    • 4. The Change of Life

      17 Feb '75
      Horizon investigates the symptoms of menopause and the various degrees in which it occurs.
    • 5. Project Fido

      24 Feb '75
      This episode of Horizon shows the peril to man of the ever increasing dog population in the western world.
    • 6. The Planets

      10 Mar '75
      By the end of 1974, Mars, Venus, Mercury and Jupiter had all been visited by spacecraft. For the first time scientists saw in sharp detail the continents, mountains, valleys and volcanoes of other worlds. Tonight's programme shows how these geological features give clues to the way the planets evolved; how they have helped scientists in their attempt to reach back 5,000 million years to understand the formation of the solar system itself.
    • 7. The Long, Long Walkabout

      07 Apr '75
      This report by Horizon covers an investigation by a group of Australian scientists that looks into the origins and history of the Australian Aborigines.
    • 8. The Overworked Miracle

      14 Apr '75
      This report by Horizon describes the resistance to antibiotics, fast growing in all countries, and the dangers it could mean for the future.
    • 9. Not the Cheapest, But the Best

      21 Apr '75
      Horizon investigates the life and work of the great engineer, Isambard Kingdom Brunel.
    • 10. A Spoonful of Roughage

      28 Apr '75
      Horizon explores the effect of fibre in diet on the diseases of western world.
    • 11. Brain Poison

      05 May '75
      Horizon presents an investigation into the effects on health of lead in the urban atmosphere.
    • 12. The Bulldog's Last Bark?

      12 May '75
      This is a Horizon report on the building of the British military deterrent from the first decision to make it in 1941 until the present state of lethargy.
    • 13. Benjamin

      19 May '75
      This episode of Horizon follows the progress of Benjamin Pile, born on 22 November, 1974, at Oxford in Britain.
    • 14. The McMaster Experiment

      02 Jun '75
      This report by Horizon covers an experiment at McMaster University Medical School, in Ontario, Canada.
    • 15. The Glazed Outlook

      09 Jun '75
      Horizon investigates the attempts by the University of Newcastle in England to define and create an ideal living and working environment.
    • 16. The Three Chord Trick

      16 Jun '75
      Horizon explores the psychology of music, as it explains why music has such a powerful emotive effect in every society.
    • 17. The Cleanest Place in the World

      23 Jun '75
      This report by Horizon brings you scientists that are using Antarctica as a giant natural lab to study who has polluted Earth most; man or nature.
    • 18. Strange Sleep

      30 Jun '75
      Horizon investigates the discovery of gaseous anaesthetic from 1840 until the early years of 20th century.
    • 19. The Greatest Advance Since the Wheel?

      07 Jul '75
      Horizon reports on the history of superconductivity, from discovery, to the present.
    • 20. How Do You Read?

      14 Jul '75
      In this documentary, Horizon reports on the reading process; how it works for the fluent, and how it should be taught.
    • 21. The Sickly Sea

      21 Jul '75
      This episode of Horizon describes the various aspects of the pollution problem of the Mediterranean Sea.
    • 22. Happy Catastrophe

      28 Jul '75
      In this Horizon episode, Rene Thom's mathematical discovery of the catastrophe theory is investigated.
    • 23. To Die, to Live - The Survivors of Hiroshima

      04 Aug '75
      This documentary by Horizon commemorates the dropping of the A-bomb on Hiroshima, Japan on August 6, 1945.
    • 24. Cannabis

      11 Aug '75
      Horizon takes a look at the history of cannabis and the research on the effects of smoking marijuana.
    • 25. Meditation and the Mind

      18 Aug '75
      This is a report by Horizon on Transcendental Meditation, or TM, brought to the West by the Maharishi Mahesh Yogi.