Rescuers in Nepal used helicopters on Thursday to scour for hundreds still missing after a wall of mud and rock collapsed into a river on the Himalayan border with China's Tibet, sending catastrophic floods through towns and valleys, killing 162.More than 400 foreigners were among 579 tourists missing, Nepal tourism officials said, after the disaster swept a region thronged by trekkers and pilgrims, while police said they expected the death toll to rise beyond 162."This will go up, as we have...
