for anyone that watches the news all the time and is terrified of natural disasters and such; I urge you to watch this whole speech (there are four parts). Micheal Crichton is an American author and doctor. He is one of the few famous people I listen to.
http://www.youtube.com/watch?v=9qtgQXtrl4Q&feature=results_main&playnext=1&list=PLB3DB7F94B51C3335