thousandsofdThousands of dead fish have begun mysteriously washing up in the polluted Rio bay that will host sailing events at the 2016 Olympics — and experts are at a loss to explain why. Guanabara Bay has already been the subject of concern amongst sailors who are to compete in Rio because of the human sewage that gets pumped into its waters. The International Olympic Committee (IOC) has expressed confidence that Guanabara will be fit for purpose by the time of the games. More