From the Weather Geeks Archives - Dr. Shepherd is joined by Dr. Alexa Van Eaton, a physical volcanologist interested in explosive eruptions. Her work examines how volcanic plumes evolve and interact within a complex atmosphere and biosphere. Her current projects include studying volcanic lightning and perhaps most interesting of all, examining “the strange story of volcanic hail."See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.