The last step in a nuclear meltdown is the breaching of the containment vessels. The fact that at least two containment vessels are damaged makes nuclear experts nervous."We have cracks now, cracks in the containment vessels...and if those cracks grow or if there's an explosion, we're talking a full blown Chernobyl, something beyond Chernobyl.
Will falling snow be radioactive?
Something maybe beyond Chernobyl if containment fails.