This explosive episode is all about the effects of Icelandic volcanoes on us all. In 1783 a massive eruption of Lakagígar volcano nearly forced the abandonment of Iceland as 15 cubic kilometres of lava was blown into the air. The greatest single amount ever recorded. The effects of this eruption caused enormous death and destruction in Iceland but also led to the failure of crops across northern Europe causing the deaths of 25,000 Britains and helping to cause the French revolution. Whilst this latest eruption seems rather tame by comparison it gave Dan the perfect excuse to speak to Páll Einarsson, who works at the Institute of Earth Sciences, University of Iceland, about the history of Iceland's volcanoes and how their presence continues to be felt both in Iceland and around the world.