Recordings on this site present 164 aftershocks as they were heard at one seismic recording station. They occurred after an earthquake with a magnitude of 6.2 beneath and near New Zealand. All events are heard in rapid sequence, without the true time intervals between them. The main shock was at a depth of 30 kilometers, 10 kilometers below the interface between the subducting Pacific Plate and the ... Full description.

The Earth hums, emitting a tone too low for human ears to detect. Geophysicists have finally located the source of the noise. As this radio broadcast reports, it comes from the largest oceans during winter, apparently the result of powerful winter storms. The hum comes from the surface of the Earth rising and falling less than a millionth of a meter, vibrating once per 300 seconds. The clip is 3 minutes ... Full description.

This set of animations, accompanied by an audio narrative, shows the four types of wave motion seen in an earthquake: P waves, S waves, Love waves, and Rayleigh waves. A brief written narrative and a set of study questions are also included. Full description.

This video from the Scholarly Kitchen features striking video footage of planet Earth filmed from orbit. The images are accompanied by narration from Dr. Justin Wilkinson of Crew Earth Observations Office, NASA Johnson Space Center. Full description.

This is an amazing set of time-lapse videos of the skies over Chile. Full description.

A comprehensive collection of Kingdom Animalia species accounts with information on distributions, natural history, conservation, and economic importance. Site features a wealth of information, pictures, and sounds. Entries are arranged in a taxonomic hierarchy. Educator resources are available for grades K-college, and feature a species account or photo submission section. Full description.

This site provides a description of a cabin in Tofte, MN on the North Shore of Lake Superior. The new owner of the cabin decided to remake it into a model of sustainable building practices. The site includes several dozen flash animations looking at sustainability from many angles as well as the specifics of the house and its surroundings. Full description.

With the intent to publicize information on the National Oceanic and Atmospheric Administration's (NOAA) major ocean exploration efforts, the Ocean Explorer Website provides a platform to follow such explorations in near real-time, learn about ocean exploration technologies, observe remote marine areas through multimedia technology, and review NOAA's 200-year history of ocean exploration. Additional ... Full description.

This Discovery Channel website explores the features of our universe. There are three sections covering various aspects of the universe, as well as a section for teachers with tips for using the website in the classroom. The Stargazers section discusses the top ten astronomers who have contributed to our current understanding of the universe: Kepler, Galileo, Brahe, Copernicus, Hubble, Einstein, Newton, ... Full description.

This database contains detailed information on hundreds of dinosaurs and dinosaur related topics. It features a dinosaur dictionary, dinosaur clip art and flex-art, and links to lesson plans and dinosaur experiments for teachers. Full description.