Q-

Radioactive cesium has a half-life of 30 years, which doesn't mean that it's harmless after 30 years but that half its radioactivity has dissipated.

"If the Fukushima complex can be stabilized in the next couple of weeks, no sky is falling scenario need be invoked."

That seems a big "IF" to me given what has already happened at the Fukushima-1 nuclear complex:

Three reactors are partially melted down
Three reactor buildings have their upper sections and roofs badly damaged
Four spent fuel pools are most likely low on coolant and are still boiling away.

The best case scenario will be stabilization known as "cold shutdown."

However, the clean-up costs will be billions of dollars and, if Three Mile Island can be used as a guide, more than ten years to accomplish.

Charley Noble