Yeah I've been wondering how bad it is exactly for a little while now. I'm curios why they're not sure if it's MOX fuel and whether that can be confirmed. I don't know how much deadlier than other forms of fuel (or what the other forms of fuel are) MOX fuel is. I'm also not sure how they decided one MOX fuel rod could kill nearly 3 billion people and how that's related to its expected dispersion method (as in, I imagine a MOX rod could be divided into 2.89 billion lethal doses if directly ingested, but how does that relate to them burning and entering the atmosphere?).
What a mess with the near certainty for a significant global disaster that no one's really doing anything about.