Planning Professor William Hanna is a strong believer in the learning power of active involvement in planning, combining university education, scholarly research, and community activism. Much of his work focuses on the majority- immigrant neighborhood of Langley Park, MD located immediately West of College Park. Hanna serves as the director of Action Langley Park, a nonprofit organization of residents, businesspeople, workers, social service personnel, and other members of the community. The group co- sponsors health and other community events, publishes the biweekly Barrio de Langley Park newsletter, and advocates for positive public sector action pertaining to immigrant welfare. Hanna is currently completing a book-length report on the marginalization of working class immigrant neighborhoods.