leaving, the train stations, the airports are crowded, now long lines. would you stay in tokyo if you were here? >> i think i would. i think there's no real likelihood of a significant radiation exposure to tokyo. it's 150 miles away, roughly. and the amount of disbursal of the radioactive cloud you're going to get in that distance is going to make the doses very low indeed. that being said, as i alluded to, we really need to monitor the doses in a more scientific way than we're doing right now. it's been done in a very ad hoc manner. something systematic needs to be done with the doses on the ground. not in the air. the air doses is not relevant to human exposure. we need to know the doses on the ground. >> and that information so far hasn't been released. >> i'm not even sure -- >> thank you for being with us.