This article describes various materials on the World Wide Web that can be effectively utilized in courses on natural hazards and physical geography. Specific Internet addresses are provided for teachers who wish to access various hazard warnings, satellite images, hazard vulnerability maps, reports, and other data concerning geophysical, hydrologic, and meteorological hazards. Suggested strategies for classroom use of this information are also provided. References are made to previous articles in the Journal of Geography that can provide guidance for teachers using the abundant hazards data accessible via the Internet.