This episode of Horizon explains how our body fights infections and cancers and brings us up-to-date on recent research in immunology.

This episode of Horizon is about various experiments on migratory birds and homing pigeons to try and discover how they navigate.

Horizon reports on the British Open University and how it operates.

Horizon investigates how Britain has hunted fish in the past and how improved fish catching techniques have severely reduced fish stocks.

This episode of Horizon is about the history of the bicycle and the possibility of it being able to ease the traffic problems in Britain.

In this episode, Horizon looks at connections between crime and poor housing design in the USA.

Horizon investigates reports of abuse of the Colorado river in the USA.

Horizon examines the British Hudson Institute's methods and predictions for the future of economics.

In this Horizon episode, we look at attempts by scientists to solve the energy crisis of future by building nuclear fusion reactors.

In this report, Prof. John Maynard Smith looks back at some of the subjects Horizon has presented since 1964.

Horizon looks back at the discovery and the development of anesthesia.

This Horizon episode is about the search for quarks, thought to be the substance of which electrons, protons, and neutrons are made of.

Horizon investigates captive animal breeding to prevent extinction of animal species in the wild.

Horizon reports on bridges in Britain...how safe are they?

Documentary about the origins of life which attempts to find out what happened in the one billion years before fossil evidence begins.

Horizon investigates the subject of sleep in Britain and the USA.

In this episode of Horizon, you learn about transferring the basis of modern industry production from human skills to computer programmed machines.

In this report, Horizon presents the state of hill farming in Wales.

This documentary of Horizon reports on the discovery of the structure of DNA in 1953 by Dr. Francis Crick and Prof. James Watson.

In this episode, Horizon reports on the rising number of imigrant doctors working in the National Health System of Britain.

Horizon explores the technological and economic reasons for the mining revival in Britain.

Horizon reports on the beef crisis and rising prices.

Horizon brings you a report by Tom Harrison on anti-nazi propaganda in Britain during World War II.

This episode of Horizon investigates the role that hormones play in the stages of mammalian sexual development.

Horizon investigates some of the risks and problems involved in bringing oil from the North Sea ashore.