radiation exposure
From Time/CNN:
The ongoing struggle to snuff out the nuclear crisis occurred amid mounting confusion about key elements of risk now in play. At a hearing in Washington on Wednesday, the chairman of the U.S. Nuclear Regulatory Commission (NRC), Gregory Jaczko, called the radiation levels at one of the plant's units "extremely high." He added that "for a comparable situation in the United States, we would recommend evacuation for a much larger radius than is currently being provided in Japan." And he said his information suggested that there was no water left in the pool containing the spent…