Lectures and broadcasts, presents some of Needham's public and invitation lectures delivered on scientific, philosophical, political and religious subjects 1921-1977. There is also a little material relating to broadcasts. Among Needham's lectures documented here are the Terry Lectures on 'Order and Life' at Yale University, 1935, the Herbert Spencer lecture on 'Integrative levels', Oxford, 1937, the Schiff Foundation Lecture on 'The position of science in Europe today', delivered at Cornell University, October 1940, and his 1961 commemorative lecture on 'The Life and Work of Sir Frederick Gowland Hopkins' delivered at Cambridge. The section also includes invitations either declined or for which there is no evidence or acceptance, 1927-1974. Broadcasts material includes a BBC radio talk by Needham on 'Recent advances in medical science', broadcast from Glasgow, 19 August 1923.