Earth Science and Map Library Links - extensive list of web links from Univ. Calif. Berkeley for the following subjects: oceanography, climatology, geography, geophysics/seismology, planetary sciences, and earth sciences.
Geosciences Research Division - includes geoscience news, web based directory, jobs, mailing lists and more.
Global Gazetteer - over 2 million place names and information throughout the world.
National Snow and Ice Data Center - is a United States information and referral center in support of polar and cryospheric research.
Paleontology Without Walls
U.S. Geological Survey Library - provides access to the US Mapping Geologic DB, USGS publications, and more.
USGS Water Data for the Nation