Eight American tourists have been killed and 21 injured when their bus collided with a truck near the southern Egyptian city of Aswan. The official MENA news agency today said the bus, which was carrying 37 tourists from the United States, was headed to the ancient Egyptian Abu Simbel temples when it collided with a truck laden with sand parked on the side of the road. Six of the dead were reported to be women. The bus driver and a tourist guide were among the injured.