- www.anacostiaws.orgBladensburg, MD
For 25 years, the Anacostia Watershed Society has been a primary force behind all of the major initiatives to restore the Anacostia—from cleaning up trash, sewage, toxics and polluted runoff, to advancing recreation, environmental education, and river-friendly development.
- www.buildingbiology.netSanta Fe, NM
Education about healthy homes and workplaces. Courses, online study, certification. Seminars on indoor air, water, materials, electromagnetic radiation, construction, land design. Services: consulting, measuring instruments, literature.