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Rio de Janeiro
Initiatives by topic
Catalytic Communities (CatComm/ComCat) (a.k.a.: Comunidades Catalisadoras (ComCat))
Sustainable transport activism
Walkable city streets are commonly closed on Sunday in major cities (of Brazil), one notable example being Avenida Atlântica in Copacabana, Rio De Janeiro. 
Towards sustainable economies: solidary enterprises, Rio de Janeiro