Could the Nuclear Meltdown be Japan's Black Swan Moment?

There have been many conflicting reports about the nuclear problems in Japan. 


One report says everything is fine. The next asks if this is Japan's Black Swan Event?


From Energy Bulletin.net:


"If this accident stops right now it will already be one of the three worst accidents we have ever had at a nuclear power plant in the history of nuclear power," said Joseph Cirincione, an expert on nuclear materials and president of the U.S.-based Ploughshares Fund, a firm involved in security and peace funding.