Rio Olympics pollution problem worsens as raw sewage pours into Guanabara Bay
More problems for Rio as oil turns white boats to brown at Olympic sailing venue – New York Daily News
Don't put your head underwater': visitors warned over Olympics pollution, Rio 2016
Final goodbye: Recalling influential people who died in 2019
Serbian Olympic rowers sink in ferocious conditions on Rio waters, Rio 2016
More problems for Rio as oil turns white boats to brown at Olympic sailing venue – New York Daily News
Trash creates obstacles for Rio 2016 Olympic sailors
Filthy Rio de Janeiro Water a Threat at 2016 Olympics - The New York Times
Rio 2016 Olympics: Pollution threat muddies waters as Games draw near