Geo/Physical Sciences 

Academic Info: Geography A clearinghouse of links dealing with all aspects of geography.

Map Projections Map projections that attempt to portray the surface of the earth on a flat surface. Also related links.

Physical Geography Resources Provides access to a mixture of images, datasets, and data libraries of potential use to physical geographers.

Scirus A science-specific search engine indexing and providing links to journals and websites. Some articles are available in full text, and some require a fee.

U. of Colorado at Boulder Dept. of Geography Another clearinghouse of links on various aspects of geography.

Academic Info: Geology & Geological Sciences A clearinghouse of academic links on all aspects of geology and the earth sciences.

EarthTrends Comprehensive on-line database focusing on environmental, social and economic trends shaping our world.

FirstGov for Science Science.gov is a gateway to authoritative selected science information provided by U.S. Government agencies, including research and development results.

Geologic Time Scale

Geological Society of America Online Publications; Non-members can search only for abstracts

National Geophysical Data Center

National Oceanic and Atmospheric Administration (NOAA)

Science Week A high-level digest of new research in the sciences. All current and back issues are free.

Scirus A science-specific search engine indexing and providing links to journals and websites. Some articles are available in full text, and some require a fee.

U.S. Geological Survey