Kingsville, Ontario, Canada

Mediation developed as a professional field through experimentation and practice.

East Greenbush, NY USA

As a sport often played with no referees, ultimate frisbee has developed a strong set of norms for addressing conflict and self-governing.

Chicago, USA

After widespread resistance to codes of conduct in open-source software communities, Coraline Ada Ehmke's Contributor Covenant became the most popular code of conduct in the ecosystem.