Professor Carl Sagan argues that:
A long-range search for extraterrestial civilisations should start now.
Carl Sagan is director of the Laboratory for Planetary Studies at Cornell University and has been actively involved in the American space programme, including the search for life on Mars. He believes there may be one million advanced civilisations in our galaxy and that some may already be sending us radio signals - high time therefore that we got ourselves organised to receive them!
He argues his case at the Royal Institution, London, with D. Bates, Professor of Theoretical Physics, Queen's University, Belfast; C. Longuet-Higgins, Royal Society Professor, Sussex University; J. Z. Young, Professor of Anatomy, London University
Chairman Sir George Porter