This animation shows the movement of seismic waves as they moved from Bolivia to San Juan Puerto Rico during a 1994 earthquake.

Earth Day grew out of the environmental movement in the late 1960s in response to a series of environmental disasters that took lives, marred natural beauty and threatened animal species. An estimated 20 million Americans participated in...

Find an interrelated set of tools--maps, animations, diagrams, photographs, and text--to help you understand tectonic plates and how they move.

View a brief animation that explains the science behind a tsunami.

Animated simulations showing the three types of plate movements: divergent, convergent, and lateral plate boundaries.

This site from PBS provides a description of the mechanisms behind the plate movements, types of movements, and the resulting earthquakes, faults, and images and animations of several of the topics presented.

Discussion of liquefaction and landslides which are two of the many effects of earthquakes.

Virtual reality animation map showing continental drift from 200mya to the present. The animation map is small but effective in showing the positions of the land masses.