Air date: 1977-01-07

Runtime: 60 min

Horizon documents the life of crocodiles and alligators, and their breeding and exploitation.

Air date: 1977-01-14

Runtime: 60 min

Horizon traces the history of the oral contraceptive pill through the last 60 years as told by its pioneers.

Air date: 1977-01-21

Runtime: 60 min

Horizon looks at how recent excavations in Africa have changed the accepted ideas of man's origins and age.

Air date: 1977-02-04

Runtime: 60 min

Horizon investigates Sociobiology, which is a study of human social behaviour based on zoological research into animal behaviour.

Air date: 1977-02-18

Runtime: 60 min

In this episode, Horizon explores how animal experiments are carried out in Britain.

Air date: 1977-02-25

Runtime: 60 min

Horizon presents a story that depicts an astonishingly harsh way of life of the Netsilik Eskimos whose whole life is based on seal hunting.

Air date: 1977-03-04

Runtime: 60 min

This story by Horizon traces the efforts of astronomers and scientists through history to prove the existence of life on Mars.

Air date: 1977-03-11

Runtime: 60 min

Horizon looks at an ecological study of the Ythan estuary in Scotland.

Air date: 1977-03-18

Runtime: 60 min

In this episode, Horizon investigates research into solar energy in the USA, Japan, and the UK.

Air date: 1977-04-01

Runtime: 60 min

Horizon explores the debate on human genetic engineering.

Air date: 1977-07-15

Runtime: 60 min

BBC television documentary which explores, using live-action dramatisation, the life's work of Sir Isaac Newton, emphasising his sources of inspiration.

Air date: 1977-07-22

Runtime: 60 min

In this episode, Horizon looks at how, despite the high costs of the National Health System of Britain, more money doesn't mean better health.

Air date: 1977-07-29

Runtime: 60 min

This Horizon report is about Prof. Hubert Montagner and his study of non-verbal communication in young children, along with his findings.

Air date: 1977-08-05

Runtime: 60 min

Horizon makes an investigation into plant biology.

Air date: 1977-09-02

Runtime: 60 min

This is a report by Horizon on the successful clean-up of the River Thames in Britain.

Air date: 1977-09-09

Runtime: 60 min

This Horizon episode reports on research by scientists into identifying a system of markers, such as tissue types on blood cells, which indicate the human being's vulnerability to a whole range of diseases like multiple sclerosis and diabetes, and the possibilities this presents for preventive medicine.

Air date: 1977-09-16

Runtime: 60 min

Horizon presents a profile on one of the UK's leading pathologists, Keith Simpson.

Air date: 1977-09-30

Runtime: 60 min

This Horizon episode examines the growing British problem of attempted suicide by an overdose of drugs.

Air date: 1977-10-07

Runtime: 60 min

Horizon presents evidence that links the drought cycle with the number of magnetically-hyperactive sunspots.

Air date: 1977-10-21

Runtime: 60 min

Horizon presents the story of how the river Rhine has defended itself against progress.

Air date: 1977-12-02

Runtime: 60 min

Horizon presents a report on the prize offered to the first person who could fly a prescribed figure of eight course.

Air date: 1977-12-09

Runtime: 60 min

This episode of Horizon is a dramatized reconstruction of breakdown of Carl Gustav Jung on the road to insanity.

Air date: 1977-12-23

Runtime: 60 min

Horizon explores a new science-based revolution in the production of wine.