Nuclear nomads: A look at the subcontracted heroes

In the days after the earthquake and tsunami that devastated the Fukushima Daiichi Nuclear Power Station last March, the international media celebrated the heroism of the "Fukushima 50" -- the plant and emergency workers who exposed themselves to extremely high radiation levels to get the reactors under control. Their efforts, it seems, were doomed from the start. Three of the reactor cores melted down anyway. And the cleanup will take decades.