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සිවුමංසල කොලූගැටයා #250: සුනාමි උවදුරකට හරි හැටි මුහුණ දීමට දැන්වත් අප සූදානම්ද?
Managing disaster early warnings is both a science and an art. When done well, it literally saves lives — but only if the word quickly reaches all those at risk, and they know how to react. W…