To say that the National Geophysical Data Center (NGDC) brings a wide range of scientific materials together in one location online would perhaps be a bit of an understatement. This site brings together over 300 digital...

In this activity, students plot daily earthquake locations on a world map. They will understand that earthquakes are not randomly distributed around the Earth, but occur at plate interfaces, and learn to identify the...

This website, authored and curated by David Stern, provides an outline of the motion of charged particles in the Earth's magnetic fields, and the Van Allen and outer radiation belts. It summarizes their discovery, their...