Web guide to radiation exposure

A colleague directed me to this online graphic, which aims to put different magnitudes of radiation exposure in context. While not taking anything away from the heroic efforts of the on-site engineers and technicians who are battling to prevent further meltdown, or how scary it must be to find radioactive iodine in your spinach, the (highly caveated) message seems to be that we're an order of magnitude or more from Chernobyl or any level of serious danger to populations beyond the immediate vicinity.