- Dallas County Lepidopterists' Society - Promotes the study of butterflies and moths. Newsletter, checklists with images, resources and hot spots.
- Dallas Regional Science and Engineering Fair - Open to seventh- through 12th-graders. Overview, testimonials from past participants, information on Southern Methodist University's fall workshop, news stories and calendar.
- Green Dallas - City environmental initiative; includes topics and tips.
- Groundwork Dallas - Works to improve and maintain the Great Trinity Forest and surrounding communities. Overview, board, news, hiking trails and pictures.
- Sustainable Skylines - Dallas - Three-year partnership to promote and improve air quality. Overview, work groups and calendar of events.
- Texas Astronomical Society - News, calendar, gallery, store, library, and bulletin board.
- Urban Solutions Center - Texas A&M Extension center fcused on planning and implementing strategies to make cities more livable, convenient, economically attractive and sustainable. Includes information on personnel, projects, departments and topic pages.
- Winston Science - Annual 20-day series of student events and competitions sponsored by the Winston School. Also includes details on the school's Saturday Science Academy, its solar car team and the Dell-Winston Solar Car Challenge.
