What are the factors that assist man to survive in difficult conditions, and under extreme physical pressure? Dr Ralph Johnson, Dean of St. Peter's College, Oxford and Lecturer in Clinical Neurology at the University talks about some of the recent research into this problem, particularly in athletics and exploration.

Special contributions by Brian B. Lloyd of the University Laboratory of Physiology at Oxford and Vice-President of Magdalen College, Wilfred Thesiger, Arabian explorer and author, and Sir Vivian Fuchs

From the BBC Sound Archives the voices of Admiral Sir Edward Evans, Sir Arthur Porritt, Sir Raymond Priestley, Tom Bourddion, Robbie Brightwell, Kenneth Cooke, Arthur Lydiard, Jim Peters, and Jim Wilson

(To be repeated on July 15)
See page 36

followed by an interlude at 7.55