Season 21

Sir Cyril Burt died in 1971, the most eminent psychologist of his age. Within two years the most bitter and disturbing scientific controversy since Piltdown Man saw Burt accused of lifelong faking and manipulation of phoney data. How and why was Burt allowed to get away with this?

Horizon looks at the research advances in physics and technology of microelectronics.

This episode of Horizon looks at the role of scientists in agriculture throughout the Third World countries.

Horizon examines the various ways of committing computer fraud and at the efforts to prevent it and preserve our privacy.

In this documentary, Horizon examines the work at an archaeological project in the Cusichaca Valley, Peru.

Horizon presents this report on parasites, their life styles, and the diseases they cause in Third World countries.

Horizon investigates the life for various civilizations along the river Waveney in east Angola.

Horizon presents a report on current research and trends in facial reconstructive surgery.

In this documentary, Horizon reconstructs a therapy session where a man imprisoned for incest meets his family for first time in two and one half years.

Horizon investigates the linguistic potential of non-human species.

In the documentary, Horizon reports on the life of slime moulds and how they provides clues to cell differentiation.

Horizon presents the first of a two-part documentary about Kenneth Bianchi, the Los Angeles Hillside Strangler, who was convicted of the murder of 12 women even though his defence was that he had no memory of the crimes.

Horizon presents the second part of a two-part documentary about Kenneth Bianchi, the Los Angeles Hillside Strangler, who was convicted of the murder of 12 women even though his defence was that he had no memory of the crimes.

Horizon reports on new medical techniques to diagnose the inherited diseases; sickle cell anaemia and cystic fibrosis.

Horizon investigates the military bias of British scientific industries and the possible consequences if the bias continues.

Horizon explores the behavioural patterns of sheep, cows, chickens, and pigs under both natural and intensive farming conditions.

Horizon reports on the decline in the amount of gambling leading to a severe reductions in money to fund the scientific research in Britain.

Horizon documents the current medical research into finding new ways of repairing damage to the brain and the central nervous system.

Horizon examines the concept and implications of a global village in Third World countries.

In this documentary, Horizon spends a week with a victim of Parkinson's disease and how he has to use considerable muscular effort in order to cope with day-to-day life.

Horizon attempts to explain some of the theories proposed by pure mathematicians over the ages.

Horizon presents a chronological history of the development of the racing car during the 15 years prior to World War II.