Apparently, the Japanese nuclear crisis was worse than we thought. The Guardian reports:
Molten nuclear fuel in three reactors at the Fukushima Daiichi power plant is likely to have burned through pressure vessels, not just the cores, Japan has said in a report in which it also acknowledges it was unprepared for an accident of the severity of Fukushima.
It is the first time Japanese authorities have admitted the possibility that the fuel suffered “melt-through” – a more serious scenario than a core meltdown.
In addition, according to the Guardian, radiation levels during the first week of the nuclear crisis were apparently twice as high as originally reported.
This is not good.