good idea not to breathe the dust to keep the windows closed and the doors closed because the wind could shust at any time. right now from the images that i've seen just a few minutes ago, the wind is still carrying east to west and carrying material out to sea. and you know, it's thousands and thousands of nautical miles to the next landfall. so this material hasn't been thrown that high in the air. so it will probably fall at least as far as humans are concerned harmlessly in the sea. >> france has encouraged its citizens who are in tokyo to leave, which is far from the immediateç evacuations zone. so should people in tokyo be concerned about the low levels of radiation detected so far? >> i think the reason if you're a foreign national, a good reason to leave is if the situation gets worse and so far the last week it always has, you don't want to be involved in another panic or another bunch of local people trying to leave