When Rio de Janeiro won the bid to host the 2016 Summer Olympic Games — set to begin on August 5th — the Brazilian government committed itself to cleaning up the city’s notoriously dirty waters as part of its Olympics legacy. These goals were institutionalized in the Responsibility Matrix, a document that gathers together commitments made by the federal, state, and municipal governments presented to the International Olympic Committee (IOC). (Fuente: Mongabay)