(See panel below)

A second showing of the world-wide report on Scientific Research "What is Life?"
The scientist looks at the living cell and the mysteries of the origins of life on earth.

Professor Michael Swann and Raymond Baxter introduce contributions from:
Europe
Dr. S. Brenner and Robert Horne, The Cavendish Laboratory, University of Cambridge
Professor F.G. Young, F.R.S., Department of Biochemistry, University of Cambridge
Professor L.S. Penrose, The Galton Laboratory, University College, London
Dr. M. Mitchison, Department of Zoology, University of Edinburgh
Dr. M. Grunberg-Manaco, Inst. de Biologie Physico-Chimique, Paris

United States of America:
Dr. M. Meselson, California Institute of Technology
Dr. David E. Green, Inst. of Enzyme Research, University of Wisconsin
Dr. Harold C. Urey, University of California, La Jolla
Dr. Melvin Calvin, University of California, Berkeley

(American film sequences directed by Derek Burrell-Davis and made in co-operation with the United States Information Services)

U.S.S.R.:
Academician A.I. Oparin, A.N. Back Institute of Biochemistry
(Filming arranged for the BBC by Moscow Radio)

(A BBC recording of the programme first shown on December 1)