AGRICULTURE NETWORK INFORMATION CENTER
http://www.agnic.org

AGRIPEDIA: ENCYCLOPEDIA OF AGRICULTURE
http://agripedia.iftopic.com/forum

ANTARCTIC CONNECTION
http://www.units.miamioh.edu/cryolab/education/antarctic.htm

CASCADES VOLCANO OBSERVATORY
http://vulcan.wr.usgs.gov/home.html

DINOBASE
http://www.bristol.ac.uk/earthsciences/

CENTER FOR OCEAN-ATMOSPHERIC PREDICTION STUDIES
http://www.coaps.fsu.edu/

FEMA: DISASTER INFORMATION
  https://www.ready.gov/

HAWAIIAN VOLCANO OBSERVATORY
http://hvo.wr.usgs.gov

HURRICANE & EXTREME STORM IMPACT STUDIES
http://coastal.er.usgs.gov/hurricanes/

INTERNATIONAL COLORED GEMSTONES ASSOCIATION
http://www.gemstone.org

CLIMATE DATA SOURCES
http://rainbow.ldeo.columbia.edu/datasources.html

MINERALS YEARBOOK
http://minerals.er.usgs.gov/minerals/pubs/myb.html

MOUNT ST. HELENS VOLCANOCAMS
http://www.fs.fed.us/gpnf/volcanocams/msh/

NASA EARTH OBSERVATORY
http://earthobservatory.nasa.gov

NATIONAL CLIMATIC DATA CENTER
http://lwf.ncdc.noaa.gov/oa/ncdc.html

NATIONAL GEOGRAPHIC SOCIETY
http://www.nationalgeographic.com

NATIONAL GEOLOGIC MAP DATABASE
http://ngmdb.usgs.gov

NATIONAL HURRICANE CENTER
http://www.nhc.noaa.gov

NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION
http://www.noaa.gov

NOAA CENTRAL LIBRARY
http://www.lib.noaa.gov

OCEAN PLANET
http://seawifs.gsfc.nasa.gov/ocean_planet.html

U.S. CORAL REEF TASK FORCE
http://www.coralreef.gov

U.S. ENVIRONMENTAL PROTECTION AGENCY
http://www.epa.gov

U. S. G. S. EARTHQUAKE HAZARDS PROGRAM
http://quake.usgs.gov

U. S. G. S. VOLCANO HAZARDS PROGRAM
http://volcanoes.usgs.gov