USGS Geologic Hazards at Volcanoes
Nice visual displaying the geologic hazards at volcanoes by the United States Geological Survey (USGS)
MTU Volcanoes Page
The Michigan Technological University has a great volcanoes page. Lots of great information and links – an excellent resource to get started learning about volcanoes!
Doomsday Volcanoes
Doomsday Volcanoes is a great 30-minute video from PBS’ NOVA that explores if the explosion of Iceland’s ticking time bombs could cause cold and famine worldwide.