Floods and Earthquakes

We have been inundated with news of the flooding of the Mississippi River and its tributaries the past several months. We have seen the pictures, over and over again, of homes washed away, of possessions destroyed, of croplands covered with water. We are told that, as far as damage is concerned, this flood has been the most costly disaster in the history of our country. It is said that, this is the kind of flood that might strike once every 500 years. Some have described it as a "flood of...