Damage at a nuclear power plant has made leaking radiation the primary threat facing a country grappling with devastation from a 9.0-magnitude earthquake and tsunami. For a narrated animation of what happened, click here. The highest reported level of radiation released from the Daiichi plant was 1,000 millisieverts per hour on March 27.
How the nuclear emergency unfolded | The Washington Post http://t.co/8syYvRM