workers risked their lives staying behind to prevent a complete meltdown. officials have told other workers and everyone else living nearby to get themselves out. now, i know people are extremely concerned about this, and i want to tell you a little bit about what you need to know. first of all when talking about the radiation levels, the way that they're measuring it is with something gnome as millie see verts. it's looking at the amount absorbed and the type of radiation. what is the damage or potential health effects on the body. we know at one point the levels got up to around 400 millisieverts. the point is that 400 is obviously very high, but that was just inside the plant area as that radioactive particle started to disperse, those