Duwamish River Cleanup Coalition
- An alliance of community, environmental and small business groups affected by ongoing pollution and cleanup plans for the Duwamish River, with the mission to ensure a cleanup that is accepted by and benefits the community and is protective of fish, wildli
- http://www.duwamishcleanup.org/

Thornton Creek Alliance
- Promotes community-based education and restoration in support of the Thornton Creek Watershed.
- http://www.scn.org/earth/tca/index.htm

Views of Seattle From Space
- From NASA, a number of satellite images of Seattle.
- http://svs.gsfc.nasa.gov/search/Keyword/Seattle.html

Thornton Creek Project
- An environmental education program in North Seattle: students, teachers, and residents all working together to understand and actively care for the watershed.
- http://www.homewatersproject.org/

Northwest Biodiesel Network
- Advocates the use of biodiesel as an alternative to diesel fuel. Upcoming events, mailing list, news links, and a list of biodiesel-compatible vehicles.
- http://www.nwbiodiesel.org/

Long Live the Kings
- Organization restoring wild salmon in the Pacific Northwest. Includes an overview of hatchery reform, events, merchandise, background on salmon biology, and links.
- http://www.lltk.org/

University of Washington Medicinal Herb Garden
- A resource for herbalists, medics, and botanists. Hypertext tour and partial catalogue.
- http://nnlm.gov/pnr/uwmhg/

Pacific Science Center
- An independent, not-for-profit educational foundation dedicated to increasing the public's understanding and appreciation of science, mathematics, and technology through interactive exhibits and programs.
- http://www.pacsci.org/

Save Seattle Center
- Highlights alternatives to the approved Monorail Project through Seattle Center, providing information in support of the preservation of Seattle Center as a city park.
- http://www.exordia.net/saveseattlecenter/

IEEE Seattle Section
- Includes a list of members, meeting dates, and links.
- http://www.ieee-seattle.org/

Society for the Advancement of Material and Process Engineering - Seattle Chapter
- Includes news, calendar, mission statement, employment opportunities, links, members, history, and archives.
- http://www.seattlesampe.org/

Seattle Robotics Society
- Founded in 1982, the SRS is one of the oldest and largest robotics groups in the world. Membership is open to everyone. The group holds monthly meetings and several competitions. Site includes the Encoder online newsletter.
- http://www.seattlerobotics.org/

Seattle Biomedical Research Institute
- Includes a list of research labs and topics, seminars, job opportunities, and a history of the organization.
- http://www.sbri.org/

Seattle Sundial Trail
- A list of sundial locations around Seattle.
- http://www.sundials.co.uk/~seattle.htm

Seattle Astronomical Society
- Includes a calendar of events, newsletter, links, and member gallery.
- http://www.seattleastro.org/

Institute for Systems Biology
- Research institute dedicated to the integration of technology, computation, biology and medicine.
- http://systemsbiology.org/

Friends of Discovery Park
- Volunteer organization committed to defending the integrity of Discovery Park, an urban forest located in the Magnolia neighborhood of Seattle. Includes a newsletter, current campaigns, and a newsletter.
- http://www.discoveryparkfriends.org/

Friends of the Cedar River Watershed
- Describes the watershed including its plants and animals, history, recreational opportunities, and an educational center. Also offers contacts, info on how to get involved, and a kids page.
- http://www.cedarriver.org/

Seattle Urban Nature Project
- Surveys urban wildlife habitat and maps open space and parks in Seattle to foster understanding, stewardship, and conservation of public lands. Includes an overview of the mapping process, tips to identifying habitats, and volunteer opportunities.
- http://www.seattleurbannature.org

Woodland Park Zoo
- A conservation and education institution demonstrating value, beauty and interdependence of all living things
- http://www.zoo.org/