Helen Czerski and Tom Heap investigate the environmental impact of volcanoes from prehistory to the present day, and find out about their cultural significance in art and literature.

On today's panel: Dr Will Hutchison, volcanologist at the University of St Andrews; Hólmfríður Sigurðardóttir, who chairs the Surtsey Research Society in Iceland; and Fiona Stafford, Professor of English Language and Literature at Oxford University. Producer: Emma Campbell

Assistant Producer: Toby Field