Documentary considering the nature of sudden death, the effects of coronary heart disease and the part they play.

This Horizon episode tells the story of the top secret experiments carried out to test the effects of mustard gas.

Horizon investigates the case against passive smoking and reveals new evidence of its danger.

Horizon reports on the new arms verification industry emerging due to the new arms control treaties.

Horizon follows astronomer's efforts to rescue the Hubble space telescope and restore its original planned performance.

Looks at the work of Earthwatch, and some of the many people who spend their holidays contributing to learning about the planet by helping on...

This Horizon documentary presents the US auto industry's response to clean-up the air in Los Angeles, California by the year 2007.

This episode of Horizon examines 20 years of research which has led to a new theory on how the earth's crust was made.

Looks at the phenomenon of the outbreaks of a lethal kidney disease amongst groups of people scattered around an area of the Balkans, covering...

This Horizon interview presents Dr. Ulysses Seal who believes the "frozen zoo" concept is the best way to save vanishing species for the future...

This Horizon episode considers the pros and cons of "ecotourism" and the effects of tourism on the environment. The coral reefs of areas of Belize...

This episode of Horizon explores the Natural History Museum and its philosophy, both past and present. We look at some of the recent innovations that...

Horizon examines the problems and cartography involved in mapping mountains such as Mount Everest. They follow the history of of mapping from those...

Horizon looks at archaeologist's new theories surrounding the population of the New World over 11,000 years ago

Documentary following the clean-up operation at Chernobyl and the elite team of Soviet scientists working in areas of radiation that would be...

Horizon presents a documentary on how virtual reality can make humans feel as if they are present in the computer simulated artificial world. What is...

In this report, Horizon follows a group of eminent scientists who believe we have become too complacent about infectious diseases.

Horizon explores the Camelford disaster, in which aluminium sulphate was accidentally added to drinking water in Cornwall in 1988.

Several astronomers and scientists explore the concepts of "hot/cold dark space" and whether or not the "Big Bang" theory is actually correct, as...

This story by Horizon looks at the expanding and controversial area of "smart drugs".

In this Horizon episode, we look at the problems facing the Carl Zeiss optics company of Jena and other companies in the scientific sector of the...

Horizon examines the social and scientific issues around the cholesterol debate.

Considers some of the different theories surrounding the Tyrannosaurus Rex dinosaur, and other members of the same family, and shows how calculations...