- 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.
- Carbon Dioxide and Climate - Glossary of carbon dioxide and climate terms.
- Carbon Dioxide Information Analysis Center - Abbreviations and acronyms relating to carbor dioxide research and analysis used at the Oak Ridge National Laboratory.
- Climate Change Terms - Glossary of "global warming" and general climatology terms.
- Environmental Sciences Dictionary - Selected terms used in this field, from greennature.com. Browsable by first letter.
- Water Environment Glossary - Water Environment Federation glossary of terms.
