Re: earthquake warning system
What Pakistan needs, and realistically can be done, is proper city planning and proper strong construction. The buildings that fell, many of them, the construction wasn't strong enough to resist the force of the quake.
Especially if we're talking about a mountainous area.
And most importantly, Pakistan needs an official national disaster team that can handle and coordinate disaster relief efficiently. As best as people and organizations are working right now, there is much room for improvement. The national disaster team needs to be equipped with proper relief equipment (removing rubble, etc to recover bodies for example), and also manpower.