Professor David Nutt - Professor David Nutt was dismissed as the governments chief drug adviser last year, after stating that the use of certain illegal drugs - such as LSD, ecstasy and cannabis - is statistically less harmful than alcohol and tobacco. The resignation of several members of the advisory board followed, in the controversy over "the line between science and policy". Guest Interviewer: Dr Stephen Webster -head of Science Communication Group at Imperial College. science-writer and a prize-winning playwright. Join us as special guest interviewer Dr. Stephen Webster interviews the former chief drug adviser to the British government, Professor David Nutt, on what he thinks are the roles and responsibilities of science to society.