Nad R writes:

Even in Michigan, very small minute amounts radioactive materials from
Japan have also been detected in the air. In the back of my mind, if trace
amounts can be detected half way around the world, Japan must be in really
bad shape.

Well Japan is having it's problems, but the ability to detect very small
amounts of substances has improved immensely.

Somehow I lived through open air A-bomb and H-bomb testing.
I suppose I'll live through this too.

They say it's less of a worry, the older you are.
Small solace, I was young during the open air testing.