Before I go much further, I want to stress how serious earthquakes are. It's not really a laughing matter if you live as I do in earthquake country. Millions of people have died from earthquakes in the last century or two, and they are still recovering bodies in Venezuela from the quake last June (6,500 dead so far with tens of thousands still missing).San Francisco after the 1906 earthquakeStill, it is important to be reminded about the threat that we in California live under. Quakes happen regularly in this state, and sometimes they are catastrophic. It's best to know the...