A recent disaster has resulted in significant loss of life and many people missing. At least 273 people have died and over 1,300 are unaccounted for. Among those missing are foreigners and pilgrims, including 65 Americans.

Scientists are working to determine the cause of the disaster, using satellite and ground-level data. Preliminary findings suggest a large chunk of a glacier broke off, blocking a river and causing a massive surge of water downstream.

Further information is available from the source, including details of the ongoing investigation into the disaster.