Perhaps a summary of the events at Fukushima is best summed up here;

http://vimeo.com/22062314

I find this very concerning as well;

http://www.cnn.com/2011/WORLD/asiapcf/04/07/japan.quake/index.html?hpt=T2

Looks like a criticality event (the bluish ball of light on the horizon) has been recorded at the beginning of the above video. I hope I am very wrong on this one.

http://en.wikipedia.org/wiki/Criticality_accident#Blue_glow