Tokyo (CNN) -- Japan's nuclear safety agency on Friday worsened its assessment of problems at the Fukushima nuclear power plant as soldiers and utility workers continued a frantic effort to hose down overheating nuclear fuel with water cannons.
The Nuclear and Industrial Safety Agency raised...
accident assessment
cooling system
crisis management
emergency services
engineering challenges
environmental impact
evacuation
fukushima
international response
nuclear crisis
nuclear safety
power restoration
public health
radiation
radiation levels
reactor damage
safety
seawaterinjection
three mile island
Full or partial meltdowns possible at some reactors; radioactive steam releases might go on for months
A second hydrogen explosion rocked Japan's seaside Fukushima Daiichi nuclear complex today, this time destroying an outer building at unit 3 and injuring six workers. But officials asserted...