American Geological Institute resources for teachers and students. Includes searchable database of earth images, geologic time scale, and interactive features.

Earth science and natural science resources, articles and online education.

General geology portal site, including links, products, and a discussion forum for professionals and students.

Geologic and natural history landscape photography of the western United States and Pacific islands.

An information system aimed at archiving, publishing and distributing data from global change research with special emphasis on geological, marine and environmental sciences.