Debuting on Wednesday 17 May 1972, Down to Earth was introduced by veteran interviewer and newsman Kenneth Allsop and looked at the kind of Britain being built to pass on to future generations.
The programme had a magazine format and reported on conservation, pollution and environmental issues ranging from urban slum clearance to plastic milk bottles to saving Dartford Warblers.
Spike Milligan appeared in the first episode, and other guests in the series included Harry Secombe, Chris Brasher and Polly Elwes.
