After many long months of repair work and planning, Japan is now entering the most critical stage of clean up after the worst nuclear accident in all of history. Engineers have spent month’s carefully removing rubble and debris from inside the #4 reactor pool and reinforcing its structure. They are now prepared to begin moving 400 tons of radioactive fuel out of the crippled reactor and into safe storage, the first of many steps on the long road to clean up. Engineers have no