decreasing throughout the day there. but at the same time, four people were injured in that explosion, and there is a 20 kilometer, 12 to 13-mile exclusion zone which has now been set up around the perimeter and tens of thousands of people have been evacuated from their homes. also reports of iodine beingi h issued as well to guard against the impact if anyone does come in contact with radiation. the government is being very, very careful to try to give the impression that this is under control, they're trying to get people to stay calm despite the sense of crisis. this is what the prime minister had to say. >> translator: we have also evacuated 20 kilometers away from the first nuclear reactor. and i would like to give careful