Correct me if I am wrong, but in that facility they had at least 8 reactors, which 5 of them were off( i think is some other number) for maintenance and the other three were still on, from what I read in other sites is that all three reactors got unstable, and they were running on backup generators(which fail'd too). ok lets go through how reactors work, for people who don't know, they are big steam engines, steam engines use steam to generate electricity, when the water evaporates, it turns into a gaseous state called(steam) and that steam forces a big turbine to move, and in that turbine there is magnets moving around copper wire(or vice versa) and thats how they make energy, the water pump that was pumping water into the reactor's core, fail'd due to that big 8.9 mag. earthquake, and as that fail'd also, well the water levels were decreasing, and the bars that i mentioned above, started getting hotter, and hotter, and it got to a point where ithey almost melted down, but what happens if it melts down? Well there is no turning off switch because the bars will fuse together and the chain reaction will get a boost because they have nothing, not even air, in between them, in turns, it could explode. getting on back on topic, They were using generators, they couldn't use other plants near by because, the reactors were off, and 3 were unstable, so, what they did, they started getting sea water in, because the generators that run the pumps were out, but anyway, my idea is, so many engineers, and no brains? who will place a nuclear plant a few miles off a fault line? Knowing the risks?