• Alternative Energy
• American Mineralogist Crystal Structure Database University of Arizona
• Athena Mineralogy
• Atlas of Rocks, Minerals, and Textures  Univ. of North Carolina
• Canyons, Cultures and Environmental Change: An Introduction to the Land Use History of the Colorado Plateau. Engaging, informative and well-organized.
• Climate Change: Methane and other Green House Gases  EPA
• Climate Diagnostics Center NOAA; the pages are current and the text is well supported with informative images, graphs and diagrams.
• Digital Earth: GeoWeb maintinaed by SRI International, a non profit reserach institute; very experimental interface; "flawed and at times frustrating, [the site] will interest those fascinated with cutting-edge technologies and the Web's potential"; graduate students and professionals, others may be confused by the "cutting-edge"
• Digital Library Earth Science Education
• Earth Science World
• EROS Data Center  The Earth Resources Observation Systems (EROS) Data Center (EDC) is a data management, systems development, and research field center for the U.S. Geological Survey's (USGS) National Mapping Division.
• Fundamentals of Remote Energy 
• How Volcanoes Work San Diego State Univ.
• Hydrology Web
• Globalchange.gov 
• Links for Mineralogists
• Mineral Industry Surveys Full-text from USGS; Acrobat Reader required; downloading can be slow
  
  Mineral Industry Surveys (MIS) are periodic statistical and economic publications designed to provide timely statistical data on production, distribution, stocks, and consumption of significant mineral commodities. These publications are issued monthly, quarterly, or annually for commodities and annually for States and countries. All monthly and quarterly materials available full-text on the USGS web site.

  Minerals Information [USGS] 
  

  Statistics and information on the worldwide supply, demand, and flow of minerals and materials. Main directory for USGS Minerals Information.

  National Climatic Data Center  a NOAA site which focuses on historical archives of weather and climate data of all types

  National Geophysical Data Center

  Nerd World: Geology

  NOAA Paleoclimatology 

  NWISWeb Data for the Nation U.S. Geological Survey's National Water Information System

  Palentology Without Walls Includes a section on Geology and Geologic Time

  Periodic Table of the Elements 

  Sandia National Labs Geoscience & Environment Center

  Soil Series Classification

  Structural Geology on the Web 

  Structural Geology and Metamorphic Petrology on the WWW  Canadian Tectonics Group

  United States Geological Survey

  U.S. Geological Survey Library

  U.S. Geological Survey Water Resources Applications Software

  WWW Virtual Library: Earth Science

  Wind and Sea: The Oceanic & Atmospheric Sciences Internet Locator

  World Data Centers

Visitors since 5/5/2006