atmosphere. they say that the radiation levels have been decreasing. but of course at the same time there is this 20-kilometer exclusion zone. thousands have been evacuated from their homes around there. and the effort continues to try to cool this reactor and that's something they've been unable to do since it first flared after the quake and that's more than 24 hours ago. becky? >> that's right, stan. this has to be one of the authority's biggest concern. let's remind our viewers there are 55 nuclear reactors in japan. 11 went off yesterday. five have had coolant problems. and this is one of those. we are some 30 hours or more in to the aftermath of this earthquake and tsunami. at this point, are you feeling more aftershocks? are you finding out about any more people who may have survived this? because the numbers are very, very thin on the ground at the moment. >> yes, very thin on the ground.