I don't know what causes some people to believe it possible, but Ian over at WaferBaby thinks he has some important points for people to remember in order to survive a nuclear strike. 'WTF?' youre thinking? Yeh, me too. :)
here are some general pointers: newspaper or cloth won't help much. ducking under a desk won't be of much use. ducking in the middle of a field isn't a priority.