S27E1 - Oil Spill
After the Exxon Valdez oil spill in 1989, Horizon looks at tanker design and the technology used for dealing with major oil slicks.
Jan. 8, 1990, midnight
S27E2 - Medicine 2000
Horizon reports on medical developments in Britain which could mean by the year 2000, health care will be very different.
Jan. 15, 1990, midnight
S27E3 - Food Irradiation: Would You Buy It?
Horizon examines the history of research into irradiated food.
Jan. 22, 1990, midnight
S27E4 - From Earth to Miranda
In this Horizon documentary, we look at how NASA launched the Voyager space probes to explore the planets of the outer solar system.
Jan. 29, 1990, midnight
S27E5 - Encounter With Neptune
This report by Horizon presents the Voyager space probe close up encounter with the planet Neptune.
Feb. 5, 1990, midnight
S27E6 - Guess What's Coming to Dinner?
Horizon looks at the potential implications of genetically engineering plants.
Feb. 12, 1990, midnight
S27E7 - The First 14 Days
Horizon brings you a documentary on embryology - the branch of biology that studies the formation and early development of living organisms from the moment of conception.
Feb. 19, 1990, midnight
S27E8 - The 10,000 Year Test
Horizon reports on how America has chosen to bury all of its most lethal radioactive waste under Yucca mountain in the state of Nevada.
March 5, 1990, midnight
S27E9 - Hurricane!
Horizon explores the inside of Hurricane Gilbert as it neared Jamaica on a direct course for the United States.
March 12, 1990, midnight
S27E10 - The Britannic Greenhouse
Horizon investigates how British scientists have begun to experiment to predict the effects of a changing climate from Greenhouse gases.
March 19, 1990, midnight
S27E11 - Cold Fusion
This story by Horizon investigates cold fusion
March 26, 1990, midnight
S27E12 - The Quake of '89 - The Final Warning?
Horizon presents the real story of seismic neglect and the failure of the San Francisco city government to protect its citizens.
April 2, 1990, midnight
S27E13 - The Sharpest Shot of the Universe
In this episode, Horizon looks at the Hubble space telescope, hailed as the greatest advance in astronomy since Galileo.
April 9, 1990, midnight
S27E14 - The Company of Ants and Bees
What can we learn from insects? Professor James Gould explains on Horizon that the human society may be able to predict their own future based on the society structure of ants and bees.
April 23, 1990, midnight
S27E15 - The Intelligent Island
This Horizon documentary looks at the radical transformations in the Singapore society as its technology extends into monitoring, logging, and linking up all businesses, information, and aspects of life on computer systems. The country's ultimate plan is to link the entire population electronically through the world's most advanced videotext system called Teleview. The report raises the question of what type of society this may create and also the political implications of such a system.
April 30, 1990, midnight
S27E16 - Legacy of a Volcano
Horizon looks at the area around Mt. St. Helens 10 years after the volcanic eruption that devastated more 500 square kilometres of forest land in just minutes.
May 14, 1990, midnight
S27E17 - Do Cows Make You Mad?
This episode of Horizon is about BSE transmitted in cattle feed and causing the fatal Creutzfeldt-Jakob syndrome in humans.
May 21, 1990, midnight
S27E18 - The Child Mothers
Horizon investigates how teenage pregnancy is now posing massive health and social problems in many societies.
June 4, 1990, midnight
S27E19 - Signs of Life
Horizon examines the possibility of scientists, either intentionally or unintentionally, creating living forms which could enjoy an independent existence, initially confined to computers and telephone networks, and in the form of computer viruses.
June 11, 1990, midnight
S27E20 - AIDS: A Quest for a Cure
Horizon investigates new breakthroughs in the scientific study, analysis, and reproduction of cells and their compounds, which may lead to the development of a cure for the AIDS virus.
June 25, 1990, midnight