It's amazing what people worry about. Amazing. Terrorism (what do you have, a 1 in 100 million chance of getting hurt by a terrorist?). Their kids smoking pot or having sex. But mercury in their mouths or in the air? Eh, whatever, ya gotta live and not worry, right?

A friend here in the office told me she's scared of germs on the subway. When I told her she should be more scared of the amalgams in her mouth, she told me I was crazy.