Th;s week Professor E. N. da C. Andrade F R S,... introduces: W. E. Le Gros Clark F R.s. ,, Professor of Anatomv in the University of Oxford, and F. E. Zeuner , d.sc... Professor of Environmental Archteology in the University of London, on ' The Link between Man and the Apes-New Light on Human Ancestry': also J D. Cockcroft. C.B.E., F.R.S., Director of the Atomic Energy Experimental Station at Didcot. who talks about atomic energy