ESRI Virtual Campus presents Spatial Analysis of Geohazards using ArcGIS, a new course that teaches how to use ArcGIS software to explore geologic hazards and analyze their potential effects on people, property, and the environment. With this knowledge, earth scientists, public sector professionals, students, and others can better understand the nature of geohazards, which is the first step toward effective disaster planning. This six-module course (the first module is free) focuses on earthquakes, volcanoes, floods, coastal geohazards, and tsunamis. Participants get an overview of the causes of these phenomena, explore them in depth using three-dimensional visualization, perform spatial analysis to explore the relationship between a hazard’s location and its effects, and create hazard maps to identify at-risk areas and features. Additionally, participants learn how to calculate valuable information such as how long it will take a tsunami to reach shore based on distance and ocean depth measurements.