Rescue efforts enter fifth day on Nepal-Tibet border after flash floods

Rescue efforts have entered their fifth day in Nepal and Tibet after flash flooding devestated a border area on Wednesday. The US Geological Survey and local officials believe the devestating flow of water, mud and debris was caused by a glacier collapsing. In Nepal, at least 675 people have died, according to the country's disaster response agency. It says more than 2,400 people are missing, and more than 18,700 rescuers have been deployed. In Tibet, the official death toll is seven, with 554 r