Geology
- Climate of the Past
- free online open access journal on climate history of the earth, sponsored by the European Geosciences Union, started with volume one in 2005.
- Encyclopedia of earth
- articles on climate change, greenhouse effect, recycling, alternative fuel, etc.
- Environmental Protection Agency
- Air and water quality, wastewater management, pollutants, etc.
- Geological Society of America (GSA)
- table of contents for GSA journals, membership, and meeting information
- Intergovernmental Panel on Climate Change
- Climate change and water 2007 full-text multi-lingual technical report, assessment, impacts, renewable energy, etc. for policymakers
- Mineralogy database
- dictionary listing A to Z of mineral species, classification, images
- National Geophysical Data Center
- information on solid earth geophysics, marine geology, paleoclimatology program, and contents and links to other sources
- Paleontology without walls
- online exhibits, geologic time machine, online glossary, animal and plant fossils, evolution, history of biology, marine biology, etc.
- U.S. Geological Survey
- search by state, earthquakes, floods, maps
- Weather Underground
- current US weather conditions & forecasts; search by three letter city code or by state.