 The mayor of Paris, Anne Hidalgo, is due to go for a swim in the River Seine this morning, in a bid to show that the water is clean enough for the Olympic Games. In recent weeks, several tests have revealed abnormally high levels of bacteria in the river, raising concerns about the swimming events that are scheduled to take place in the Seine. The French sports minister, Amélie Odea-Castera, took a dip in the river last weekend. She says it'll be ready for the Games.