Answers to listeners' questions about science and technology put to a panel of experts by DR. PETER SYKES
Panel:
T. F. GASKELL , geophysicist R. J. C. HARRIS , virologist
B. J. MASON , physicist
W. T. WILLIAMS , botanist
Arranged by ARCHIE CLOW
Questions for future programmes to ' Who Knows? ' BBC, Broadcasting House, London. W.I.