Learn how gas drives volcanic eruptions in this videos from NATURE: Living Volcanos. Join Dr. Salvatore Giammanco and his team as they explore the gases released by Mount Etna in Sicily, Italy. Based on the presence of water vapor during an eruption, Dr. Giammanco explores how volcanoes may have been the origin of water on earth. In the accompanying classroom activity, students conduct an inquiry-based investigation of how to maximize gas production during a baking soda and vinegar eruption. Additional support materials are available including discussion questions and vocabulary.