Missing about four months for the 2016 Olympic Games and the levels of pollution in Guanabara Bay remains critical, Rio de Janeiro, Brazil, 30 March 2016. The site will be used for sailing competitions. This image, captured on the afternoon of Wednesday, is a common scene in the vicinity of Museum of Tomorrow, which is bathed by the putrid waters of Guanabara Bay. (Photo by Luiz Souza/NurPhoto via Getty Images)
