The thing that worries me more is the plutonium. Apparently you only need to breathe or ingest the slightest particle for it to be lethal.
The problem is that there is now no way of cooling the reacters, because nobody can get near, so an explosion when the meltdown mass reaches the water table seems highly likely (sending a MASSIVE plutonium cloud into the atmosphere).
As I say, if anybody can reassure me that I'm worrying for nothing please do.
Incidentially, a Japanese cargo ship has already been turned away from China because of radioactivity - this will certainly kill the Japanese economy - and have global economic repurcussions too.