Dozens of Americans among those missing after catastrophic Nepal flooding: What to know

A deadly flash flood that tore through Nepal and Tibet early Wednesday killed hundreds and left thousands missing, including dozens of U.S. citizens. The Bhotekoshi River flooded around 9 a.m. local time, ravaging villages, roads and hydropower projects, officials said. The death toll is not yet clear.  Here’s what to know about this catastrophic event:…