Volcanologist, author and filmmaker Clive Oppenheimer's career has taken him to the edge. From dodging lava bombs at Stromboli to facing AK-47s in the Danakil Depression, Clive shares gripping stories from his fieldwork and the unexpected human side of volcanoes. We explore his acclaimed book, "Mountains of Fire: The Secret Lives of Volcanoes" and discover how volcanic eruptions can alter climate, tell us a lot about our planet's past. In his typical self-deprecating humour Clive instills an infectious sense of wonder, something he credits to his mother.