Tornadoes I know about - we had one go through our backyard when I was a kid. Then we moved to the East Coast - so I also got the opportunity to get acquainted with hurricanes. But there is one natural disaster I do not know much about - and that's just fine - earthquakes. What I know I have learned from people who have been through them - like Mike, for example, the man in the seat next to me on a long airplane flight recently. Until recently, he lived in Northridge, CA - remember, that was the epicenter of a major quake not long ago. He told me he and his family were lucky to be alive after that quake. And the day after he was out in his backyard, cleaning up some of the damage. Suddenly, he said, the ground started moving around him - and he literally saw the ground moving in waves toward him. Now it was an aftershock - and it was scary to see. And he summed up what he had learned from that earthquake in just a few words - "Things you're sure will always be there - may not be."