A Nepali school principal swiftly evacuated 1,643 children to safety as glacier-triggered floods surged toward their school, preventing a catastrophic loss of life in the region.

The flash flood, triggered by a glacier collapse, tore through mountain river systems, killing over 700 people in Nepal and 16 in Tibet. | World News

Rajendra Dawadi, the principal of Tribhuvan Trishuli secondary school, received a phone call on Wednesday morning telling him the village five miles upstream had been taken by the…