If you would like to follow along as an engineer discusses, in a calm rational, manner the radiation situation in Japan, click here.
I especially like this comment:
“The important lesson from Japan is that we took obsolete reactors with old designs and safety features, and subjected them to a 9.0 quake and a very large tsunami, and the damage to the planet is an unfortunate but hardly decisive event. It is now time to stop worrying about this mess until things settle and we can see precisely what we have learned, and factor that into the next generation designs. Note that almost everywhere in the world we are building reactors with much better design and far better safety features than those being destroyed now. Concentration on how awful is the nuclear mess takes our attention off the economic and human disasters from the earthquake and tsunami.”