Apparently this video has now been pulled. It was a mixed bag both talking about global cooling and possible global warming. I wondered if I spotted Hansen in the first scene but was going to take a closely look later. I guess from the mix of themes it was produced around 1980. The title suggested it might have been shown on the BBC, but it was long and I didn’t get to the part I remember most distinctly which would be the last 10 minutes, so I still don’t know if this is the film they showed. However I didn’t obviously recognise it.
Video has been pulled.