Horizon: 1991
Season 28 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Horizon Season 27.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 28 Progress Shield
Sudden Death
Jan 7, 1991 · 60 min
Documentary considering the nature of sudden death, the effects of coronary heart disease and the part they play.
Keen as Mustard
Jan 14, 1991 · 60 min
This Horizon episode tells the story of the top secret experiments carried out to test the effects of mustard gas.
Smokers Can Harm Your Health
Jan 21, 1991 · 60 min
Horizon investigates the case against passive smoking and reveals new evidence of its danger.
Coming In from the Cold
Jan 28, 1991 · 60 min
Horizon reports on the new arms verification industry emerging due to the new arms control treaties.
Small Problems with the Mirror
Feb 4, 1991 · 60 min
Horizon follows astronomer's efforts to rescue the Hubble space telescope and restore its original planned performance.
Two Weeks to Save the Earth
Feb 10, 1991 · 60 min
Looks at the work of Earthwatch, and some of the many people who spend their holidays contributing to learning about the planet by helping on prehistoric digs, recording fish noise
California Dreaming
Feb 11, 1991 · 60 min
This Horizon documentary presents the US auto industry's response to clean-up the air in Los Angeles, California by the year 2007.
The Day the Earth Melted
Feb 25, 1991 · 60 min
This episode of Horizon examines 20 years of research which has led to a new theory on how the earth's crust was made.
The Curse of Karash
Feb 25, 1991 · 60 min
Looks at the phenomenon of the outbreaks of a lethal kidney disease amongst groups of people scattered around an area of the Balkans, covering Yugoslavia, Romania and Bulgaria, ove
Playing at Noah
Mar 4, 1991 · 60 min
This Horizon interview presents Dr. Ulysses Seal who believes the "frozen zoo" concept is the best way to save vanishing species for the future generations.
Cashing in on Paradise
Mar 11, 1991 · 60 min
This Horizon episode considers the pros and cons of "ecotourism" and the effects of tourism on the environment. The coral reefs of areas of Belize are suffering already from the ef
The Terracotta Time Machine
Mar 18, 1991 · 60 min
This episode of Horizon explores the Natural History Museum and its philosophy, both past and present. We look at some of the recent innovations that have been introduced in the pa
Measuring the Roof of the World
Mar 25, 1991 · 60 min
Horizon examines the problems and cartography involved in mapping mountains such as Mount Everest. They follow the history of of mapping from those surveys conducted by mountaineer
The First Americans
Apr 15, 1991 · 60 min
Horizon looks at archaeologist's new theories surrounding the population of the New World over 11,000 years ago
Inside Chernobyl's Sarcophagus
Apr 22, 1991 · 60 min
Documentary following the clean-up operation at Chernobyl and the elite team of Soviet scientists working in areas of radiation that would be considered lethal in the West, whilst
Colonising Cyberspace
Apr 29, 1991 · 60 min
Horizon presents a documentary on how virtual reality can make humans feel as if they are present in the computer simulated artificial world. What is the future of all this powerfu
Emerging Viruses
May 13, 1991 · 60 min
In this report, Horizon follows a group of eminent scientists who believe we have become too complacent about infectious diseases.
Camelford - A Bitter Aftertaste
May 20, 1991 · 60 min
Horizon explores the Camelford disaster, in which aluminium sulphate was accidentally added to drinking water in Cornwall in 1988.
Of Big Bangs, Stick Men and Galactic Holes
Jun 3, 1991 · 60 min
Several astronomers and scientists explore the concepts of "hot/cold dark space" and whether or not the "Big Bang" theory is actually correct, as well as considering the structures
Food For Thought
Jun 10, 1991 · 60 min
This story by Horizon looks at the expanding and controversial area of "smart drugs".
The Long Road to the West
Jun 17, 1991 · 60 min
In this Horizon episode, we look at the problems facing the Carl Zeiss optics company of Jena and other companies in the scientific sector of the former Eastern block countries. Fo
Half Hearted About Semi-Skimmed
Jun 24, 1991 · 60 min
Horizon examines the social and scientific issues around the cholesterol debate.
T-Rex Exposed
Jul 1, 1991 · 60 min
Considers some of the different theories surrounding the Tyrannosaurus Rex dinosaur, and other members of the same family, and shows how calculations about size, speed, weight, etc