.  RT:Finally, what is the worst case scenario? What level of contamination are we looking at and how dire would the consequences be for the long-term health of the region?  CC: Extremely dire. This is a terrible answer to have to give, but the worst case scenario could play out in death to billions of people. A true apocalypse. Since we have been discussing Reactor 0, I'll stick to that problem in particular, but also understand that a weather event, power outage, earthquake, tsunami, cooling system failure, or explosion and fire in any way, shape, or form, at any location on the Fukushima site, could cascade into an event of that magnitude as well.  