By Manuel Silvestri VENICE, Italy (Reuters) -At least 21 people died on Tuesday after a city bus carrying tourists to a campground crashed off an overpass near Venice in northern Italy and caught fire, the city's prefect Michele Di Bari said. The bus veered off the road and fell close to railway lines in the district of Mestre, which is connected to Venice by a bridge. The cause of the accident was still unclear. Officials said the vehicle fell 30 metres (98 feet) onto electricity lines and caught fire at around 7:45 p.m. local time (1745 GMT). "It's an apocalyptic scene. I am speechless," Ven...
