NOTE: I checked with SNOPES and this really does work.
With all the fear of radiation fallout from Japan I thought it
might be useful to tell you about a cheap, effective, homemade
radiation tester you can easily assemble and rely upon.
Follow these simple instructions, IT REALLY WORKS!!
OPEN A BAG OF ORVILLE REDENBACHER MICROWAVE POPCORN.
LEAVE IT ON YOUR KITCHEN COUNTER.
IF IT STARTS POPPING, YOU'RE SCREWED!
I swear, by my life and my love of it, that I will never live for the sake of another man, nor ask another man to live for mine. - Ayn Rand