- Eco Index
- A database of conservation and related research projects in Mexico and Central America, with project descriptions, goals, achievements, lessons learned and internet links. Maintained by the Rainforest Alliance.
- Database of magnethydrodynamic (MHD) information systems that are used for water treatment. Page includes list of conferences, research centers, scientists, careers, and publication search. Has a European focus.
- Urban Streams
- Directory of links to information to assist volunteers working to protect and restore streams and salmon habitat in the Pacific Northwest.