This is a collection of high-quality photographs of Mars, showing evidence of water. Each photo is available in multiple versions, and is accompanied by a detailed description of what it illustrates. Full description.

This article describes the ongoing research on the possible presence of water on Jupiter's moon Europa. It includes satellite images of Europa, scientific illustrations, and extensive text. It also discusses similar research being done on Lake Vostok in Antarctica. It also offers a variety of related links. Full description.

Students will utilize the Internet to take a virtual field trip to visit a glacier and discover what physical effects glaciers have on the land. They will also have the opportunity to virtually visit Vermont and trace the pictorial history of how a whale's fossils were found there. The site also contains a student worksheet for their visual field trip. The site also provides an explanation of the ... Full description.

This booklet provides a brief introduction to the concept of plate tectonics and complements the visual and written information in This Dynamic Planet, a map published in 1994 by the U.S. Geological Survey (USGS) and the Smithsonian Institution. The booklet highlights some of the people and discoveries that advanced the development of the theory and traces its progress since its proposal. Although ... Full description.