Swimming danger in Rio Olympic venues.
Keep your mouth closed: Aquatic Olympians face an even worse toxic stew than previously thought
Andrew Jacobs, The New York Times | July 27, 2016 3:50 PM ET
RIO DE JANEIRO — Health experts in Brazil have a word of advice for the Olympic marathon swimmers, sailors and windsurfers competing in Rio de Janeiro’s picture-postcard waters next month: Keep your mouth closed.
