Desperate Hours - Episode 2 12

Earthquakes have always been with us, but only in recent decades has their devastating impact been captured so vividly on film and online. In this episode, we explore scenes from some of the most destructive natural cataclysms. Of all disasters, none releases more energy than an earthquake?caused when Earth's plates grind and snap, shaking hundreds of square miles. Most occur in the Pacific "Ring of Fire." Alaska sees a 7.0 quake yearly, while California experiences about 10,000, most too small to notice.