Planetpals - Ecology Dictionary
- Terms explained in everyday language.
- http://www.planetpals.com/ecodictionary.html

Water Environment Glossary
- Commonly used terms described.
- http://www.wef.org/LearnAboutWater/ForThePublic/WaterTerms/

Carbon Dioxide Information Analysis Center
- Abbreviations and acronyms relating to carbor dioxide research and analysis used at the Oak Ridge National Laboratory.
- http://cdiac.ornl.gov/pns/acronyms.html

Carbon Dioxide and Climate
- Glossary of carbon dioxide and climate terms.
- http://cdiac.esd.ornl.gov/glossary.html

Atmospheric Chemistry Air Quality Glossary
- By the Sam Houston State University air quality and atmospheric chemistry students. Sources are quoted, and hyperlinks to relevant Internet sites are included.
- http://www.shsu.edu/~chemistry/Glossary/glos.html

Climate Change Terms
- Glossary of "global warming" and general climatology terms.
- http://yosemite.epa.gov/oar/globalwarming.nsf/content/Glossary.html