River Fields
- Protects, preserves and enhances natural and cultural resources on the Ohio River between Westport and West Point. Includes staff profiles and membership form.
- http://www.riverfields.org/

The Louisville Astronomical Society
- Observations, calendar, gallery, deepsky atlas, FAQ, classroom, and sky events.
- http://home.insightbb.com/~lasweb/

Louisville Science Center
- Experience science, mathematics and technology through hands-on exhibits, IMAX films, educational programs and a gift shop.
- http://www.louisvillescience.org/

Louisville Nature Center
- Features native wildflower gardens, trails, indoor exhibits and children's activities. Includes membership details, events, volunteer opportunities, hours and directions.
- http://louisvillenaturecenter.org/