Documentary about colour perception based on the theories of Dr. Edwin Land, which oppose the long-held three-receptor theory of colour vision

Horizon takes a look at consultant psychiatrists.

Horizon looks at the way modern archaeologists extract information from a site dig.

This Horizon episode is about a hospital in the African country of Kenya where the medical staff tells of a new approach to health care among the Pokot tribe.

In this episode, Horizon explores the characteristics of left-handed people.

Horizon examines new military technology which will come to dominate the battlefields of the future.

This episode of Horizon is about the controversial policy in African nation of Zimbabwe of encouraging villagers to allow wild animals back onto their land.

This documentary by Horizon attempts to explain the advances in physics in the search for the ultimate equation that explains the meaning of life, the universe, and everything else in existence.

Horizon brings you a report by Robert Symes who offers ten golden guidelines on how to be a successful inventor.

This is a Horizon follow-up report on the careers of seven British teenagers studying Science 'O' levels back in 1978.

Horizon investigates how food allergy has developed from the 1950's to the present.

Horizon examines a hypothesis that life itself manipulates the planet to enhance it's own survival.

This Horizon documentary examines the Infra-Red Astronomical Satellite (IRAS) which has detected evidence of planetary systems around distant stars.

Horizon reports on the current medical treatment of Malaria and Leukemia.

Eighty per cent of all crashes are caused by 'human error'. Finding out what that means in terms of human behaviour has been called the last great frontier in aviation safety.