The recent devastating earthquakes in Haiti and Chile were reminders of the power of the Earth and what terrible damage can be caused by such tremors. But what do we know about earthquakes? And can we predict when they might occur? A special event was held to discuss these questions at the 2010 British Science Festival in Birmingham, bringing together scientists from across the UK. Julia Graham speaks to quake experts, Professors Roger Musson, Barry Parsons and Ian Main to find out more...