A catastrophic flash flood tore through Nepal's Bhotekoshi river basin on Wednesday, killing 162 people, destroying villages, and crippling infrastructure along the Nepal-China border. Yet, officials on both sides remain baffled by what triggered the disaster—one of the country's worst since the 2015 earthquakes.The leading theory points to a glacial outburst possibly set off by a magnitude 4.4 earthquake that struck neighbouring Tibet at 8:37 am, according to the US Geological Survey. The flood...
