Sir David Attenborough looks back almost four decades to the week in 1973 when he took up the mantle of Royal Institution Christmas Lecturer.
Billed as the "One hundredth and forty-fourth course of six lectures for young people" the series was made up of six hour-long lectures and filmed live between Friday 23 December 1973 and Friday 4 January 1974.
Speaking in the Faraday Theatre, Sir David describes the difficulty of working with animals in a live broadcast and the trepidation he felt on taking on the project.
