Air date: 1989-01-09

Runtime: 60 min

Horizon looks again at the Human Genome Project which aims to decipher or sequence all genes.

Air date: 1989-01-16

Runtime: 60 min

Horizon reports on the abnormally high incidence of and the early onset of diseases such as senile dementia and Parkinson's disease on the island of Guam in the Pacific. Scientists have now linked the diseases to a poison in the native cycad fruit.

Air date: 1989-01-23

Runtime: 60 min

In this episode, Horizon presents evidence that even diving in relatively shallow waters can cause serious long term damage to the brain and spinal cord.

Air date: 1989-01-30

Runtime: 60 min

This documentary by Horizon demonstrates how smart Weapons use computers to destroy targets, that until now, were only able to be threatened by nuclear weapons.

Air date: 1989-02-06

Runtime: 60 min

Horizon looks at the damaging effects of pollution and tourism on the Swiss Alps in Europe.

Air date: 1989-02-13

Runtime: 60 min

Horizon answers the question: What are the alternatives for the elderly in Britain who can't live at home, or in a rest home or nursing home, or part of a sheltered accommodation?

Air date: 1989-02-20

Runtime: 60 min

Horizon brings you an interview with Prof. Eric Laithwaite who presents an engineer's personal view of nature and how new inventions already exist in nature.

Air date: 1989-02-27

Runtime: 60 min

In this episode, Horizon presents an investigation into the state of medical research in neurological disorders and the issues with its funding in Britain.

Air date: 1989-03-06

Runtime: 60 min

This documentary by Horizon investigates new technology applied to music.

Air date: 1989-03-13

Runtime: 60 min

Horizon covers the story of the Nottingham psychiatrists who study the human race to see who is mostly likely to develop schizophrenia.

Air date: 1989-03-20

Runtime: 60 min

This Horizon report covers the Tasaday, a remote Philippine tribe apparently living in the stone age, who are now seen as a hoax. How did they do it?

Air date: 1989-04-03

Runtime: 60 min

Horizon explores three types of alternative medicine; homoeopathy, acupuncture, and diagnosing food allergies by testing your toes.

Air date: 1989-04-17

Runtime: 60 min

Horizon presents a biography of the philosopher Ludwig Wittgenstein who lived from 1889 to 1951.

Air date: 1989-04-24

Runtime: 60 min

This is a Horizon documentary about an investigation into the so-called "sick building syndrome" where occupants contract illnesses because of the environment within the building.

Air date: 1989-05-08

Runtime: 60 min

How valid have been Horizon's criticisms of scientific orthodoxy and to what effect have the programs had?

Air date: 1989-05-15

Runtime: 60 min

Horizon investigates how many of the tragedies on our roads in Britain could be avoided by the introduction of technical and legislative changes.

Air date: 1989-05-22

Runtime: 60 min

Horizon follows J. Hooper, a diabetic, as she explores various aspects of biosensor technology.

Air date: 1989-06-12

Runtime: 60 min

Horizon presents a profile of noted inventor Clive Sinclair with his family and colleagues reminiscing and analysing his successes and failures.

Air date: 1989-06-19

Runtime: 60 min

In this story, Horizon explores how the destructive patterns of child abuse and depression can be broken by concentrating on the mothers of young children.

Air date: 1989-06-26

Runtime: 60 min

In this Horizon episode, we look at the effects on the climate from volcanic eruptions.