A day before a wall of ice, rock and muddy water tore through Himalayan valleys along the Nepal-China border, Dipesh Chapagain was discussing with a colleague just how devastating such a disaster could be.A day before a wall of ice, rock and muddy water tore through Himalayan valleys along the Nepal-China border, Dipesh Chapagain was discussing with a colleague just how devastating such a disaster could be. Read MoreUN News – Global perspective Human stories

