The late show.

Mark Lawson chairs a debate between Steve Connor ("Observer" Science Correspondent) and Jonathan Miller (Assistant Editor "Sunday Times") over the "Sunday Times" consistent support of Prof. Peter Duesberg's theory that HIV is not the cause of AIDS. Also in this programme is a discussion about how far computers resemble the human brain, with Prof. Gerald Edelman and Prof. Igor Aleksander (Imperial College, London) and a report by Prof. Richard Dawkins on his "viral theory" of human belief systems.