This episode of Horizon looks at a new approach that holds hope for the treatment of Parkinson's Disease.

Horizon documents the first sighting of a star in supernova at its initial stages. The study of the spacial event provides fascinating insight into the life of our own universe.

In the report by Horizon, they looks at manic depression and how is now known that it has a strong genetic component.

This episode of the Horizon explores the Panama Canal, now a billion dollar commercial sea crossroad between continents. The future of the canal is in danger because of damage to rain forests.

Horizon investigates how those who are born into a working class family are at greater risk of dying early than if born a child of the professional classes.

This documentary report by Horizon examines the devastating effects of the Greenhouse Effect (earth's temperature rising) and how man is causing it.

This is a Horizon report on Britain's air traffic control capabilities and the use of outdated and unreliable equipment.

Explores the limits of digital computers and artificial intelligence. Includes the views of John Searle, a philosopher at the University of California who refutes the claims for 'thinking' machines.

Horizon looks at the experimental treatment of four cancer patients in the USA who have volunteered to try the LAK/Interleuken 2 treatment.

This is part one of a two-part series by Horizon reporting on a military exercise code named Purple Warrior which is designed to test lessons learned during the Falklands war.

This is part two of a two-part series by Horizon reporting on a military exercise code named Purple Warrior which is designed to test lessons learned during the Falklands war.

Horizon looks at the progress of two heart disease patients at Montreal's Royal Victoria Hospital in Britain.

This is part one of a two-part Horizon series about the mystery of Easter Island, the stone statues, and the civilization that erected them.

This is part two of a two-part Horizon series about the mystery of Easter Island, the stone statues, and the civilization that erected them.

Horizon presents part one of a three-part series on the education of doctors in Britain. In this episode, we look at the ordeal of an interview faced by two potential students applying to St. Mary's Medical School.

Horizon presents part two of a three-part series on the education of doctors in Britain. In this episode, we examine the first two years of education at St. Mary's Medical School and at the exams that have to be passed.

Horizon presents part three of a three-part series on the education of doctors in Britain. In this episode, a group of medical students are followed from the beginning of their third year of medical education up to the point where they meet patients for the first time.

Horizon investigates if changes in lifestyle could reduce the risks of cancer.

In this documentary, Horizon explores how to solve murder cases with the help of new technology.

Horizon interviews the scientist and Nobel prize winner, Peter Medawar.

This report by Horizon covers how the electronic revolution in television news affects the way it is gathered, edited, and presented.

Horizon investigates the use of psychological techniques in job recruitment and career development.

This Horizon episode presents the breakthroughs in superconductivity research in several countries.

Horizon brings you a report on Myalgic Encephalomyelitis which is a neurological disease that has been puzzling doctors for more than 30 years.

Richard Feynman was not only an iconoclastic and influential theoretical physicist and Nobel laureate but also an explorer at heart. Feynman through video recordings and comments from his friend and drumming partner Ralph Leighton tell the extraordinary story of their enchantment with Tuva, a strange and distant land in the centre of Asia.