This impressive source for information about endangered mammals is the result of more than a decade of research by Dr. Paul Massicot, who spent 30 years working at the Maryland Department of Natural Resources. Site...

Created by author Nick Strobel, "Astronomy Notes" is an educational resource for introductory astronomy classes for undergraduates. This section describes: the celestial sphere, coordinate systems, the motion of the...

This collection, created and maintained by Harald Edens, contains photographs of many different atmospheric optical phenomena. Those phenomena include ice crystal halos, light scattering, and atmospheric refraction,...

Mish Denlinger of San Francisco's Exploratorium created Auroras: Paintings in the Sky, a Web exhibit devoted to this beautiful celestial phenomenon. Visitors are introduced to how auroras are created, what they look from...

The AVS is an organization dedicated to advancing the science and technology of vacuum, materials, surfaces, interfaces, thin films, and plasmas, and to provide a variety of educational opportunities. There are 8...