Not good for Nuclear Power

Not exactly the news the U.S. nuke power industry wants to see:

Edano said the radiation around the Fukushima Dai-ichi plant had not risen after the blast, but had in fact decreased. He did not say why that was so.
The explosion was caused by hydrogen interacting with oxygen outside the reactor. The hydrogen was formed when the superheated — and increasingly brittle — metal container of the fuel rods came in contact with water being poured over it to prevent a meltdown.
Officials have not given specific radiation readings for the area, though they said they were elevated before the blast: At one point, the plant was releasing each hour the amount of radiation a person normally absorbs from the environment each year.
Virtually any increase in ambient radiation can raise long-term cancer rates, and authorities were planning to distribute iodine to residents in the area, according to the International Atomic Energy Agency. Iodine counteracts the effects of radiation.
The pressure in the reactor was also decreasing after the blast, according to Edano.

I don't know how well the "at least it didn't meltdown" argument will work for people.