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A demonstrator wears a gas mask during an anti-World Cup protest in Rio de Janeiro on June 12 ... Rio causing upwards of 75 per cent of the air pollution. Inea did not respond to Reuters ...

One year before the Rio 2016 Olympic games, three bodies of water slated to be used for water sports have been found to be dangerously filthy. Scientists have found bacteria and viruses in the ...

With just four days until the start of the Olympic Games in Brazil, reports indicate that levels of pollution in Rio de Janeiro remain ... promise to clean up Rio's air quality.