I predict a riot... or not. This week we're joined by crowd control experts Dr Clifford Stott, from Liverpool University, and Dr John Drury, from Sussex University, wholl be discussing why violence kicks off at football matches, how to spot a spat and the science of mass evacuation. Taking us on a flight of fancy, Dr Gay Gibson, from the University of Greenwich, who describes her research into the harmonious music of mosquitoes, and in Kitchen Science, Derek Thorne bangs out a tune from an oven shelf...