University of Bristol professor and Volcanologist Jenni Barclay joins WIRED to answer the internet's lava-hot questions about volcanoes. How do volcanoes cause lightning? What would happen if you fell into a volcano? What do volcanologists study day-to-day? Are there any super volcanoes in the world overdue for an eruption? Why does Iceland have so many active volcanoes? These questions and many more are answered on Volcano Support.