An introduction to earthquakes and volcanoes, primarily through case studies. Using the basic principles of plate tectonics, students will learn why, where and how earthquakes and volcanoes occur. The hazards associated with earthquakes and volcanic eruptions will be discussed at length, as well as their societal implications in both the United States and developing world. Earthquake and volcanic hazard mitigation techniques will be addressed. Finally, earthquake hazards in the central United States will be discussed.