What are mankind's chances for survival? We talk about the balance of power, and the spread of nuclear weapons, but there is another voice at the table. This is the voice of nature. We all have our pet fears, darkness, thunder, but perhaps the most terrifying of all is the earthquake. The thought that the solid earth on which we stand, could suddenly divide beneath our feet and swallow us, is so horrifying, we refuse even to think about it! Right now, we're in a monitoring station on the west coast...