This is the homepage of the United States Geological Survey's (USGS) Cascades Volcano Observatory (CVO). The site features news and events, updates on current activity of Cascade Range volcanoes, and information...

At Craters of the Moon National Monument and Preserve visitors can explore cinder cones, lava tubes, lava flows, and other volcanic features. Craters of the Moon is run by the National Park Service and offers a variety...

What goes on during an earthquake? Who came up with the theory of plate tectonics? What can the fossil record tell us about the evolution of life on Earth? These are all fine questions, and students and educators with a...

This unit provides an introduction for younger students on earthquakes, volcanoes, and how they are related. Topics include evidence of continental drift, types of plate boundaries, types of seismic waves, and how to...

According to theory of plate tectonics, Earth is an active planet -- its surface is composed of many individual plates that move and interact, constantly changing and reshaping Earth's outer layer. Volcanoes and...