Adirondack Science Online
   Educational program using the Adirondack mountains. Includes areas for contributing data, reporting events, discussing observations, and learning from findings.
   http://www.adkscience.org/

California Underground: Our Caves and Subterranean Habitats
   Educational materials and photographic tours on the formation and occurrence of different types of caves, cave biology, and cave conservation.
   http://www.museumca.org/caves/onli_realm.html

Earth Fact Sheet
   Basic earth statistics from the NSSDC.
   http://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html

Earth Science Resource Center
   A division of the Office of Special Programs and Continuing Education at the Colorado School of Mines. The ESRC publishes relevant science-related materials.
   http://www.mines.edu/Outreach/Cont_Ed/esrc.shtml

Earth Science from Moorland School
   Earth science for schools including the rock cycle, plate tectonics, planetary structure and origins, volcanoes, atmosphere, fossil fuels and polymers.
   http://www.moorlandschool.co.uk/earth/

EarthNet
   Earth science information for both teachers and students. Glossary, lesson plans, extensive links, lists of topics, and other resources.
   http://earthnet-geonet.ca/

Exploration of the Earth's Magnetosphere
   Detailed non-mathematical introduction to the research on the Earth's magnetic environment in space and its history. Contains master directory of more than 70 related text files.
   http://www-spof.gsfc.nasa.gov/Education/Intro.html

International Geoscience Education Organisation
   Goal is to work for the improvement of education within the earth science fields, especially in K-12 grades. Page includes newsletters and conference schedule.
   http://www.geoscied.org/

Museums Teaching Planet Earth
   Educational earth science resources and software produced by Rice University in collaboration with the Houston Museum of Natural Science, funded by NASA under the Office of Earth Science
   http://earth.rice.edu/mtpe/

NASA Planetary Science Research Discoveries
   An educational on-line magazine describing discoveries in planetary and space sciences. Written for teachers, students, and the general public.
   http://www.psrd.hawaii.edu/index.html

Our Dynamic Earth
   Interactive exhibits about planet earth. Utilises the QuickTime, Shockwave and Acrobat Reader plug-ins.
   http://www.dynamicearth.co.uk/

Science for Everyone
   Collections of recent articles on topics related to the science of planet Earth. From AGU.
   http://earth.agu.org/sci_soc/everyone.html

USGS Learning Web
   Educational resources for the earth sciences from the U.S. Geological Survey.
   http://education.usgs.gov

Water Science for Schools
   Information on many aspects of water, along with pictures, data, maps, and an interactive center.
   http://ga.water.usgs.gov/edu/