Deadly Warnings for Earthquakes

The Great Hanshin-Awaji Earthquake in 1995 exposed the threat of active faults lurking beneath our feet that can generate a city-destroying quake in an instant. Recent studies show that certain kinds of jolts caused by the faults could bring down high-rises. Where will a mega-quake hit next? 20 years after the Hansin-Awaji disaster, scientific surveys across Japan have brought new warnings.