A: The decision was based on new assessments of radiation leaks since the crisis began, rather than on deteriorating conditions. The new data showed emissions exceeding the threshold for a "major ...

Japanese officials said the leaks from the Fukushima plant so far amount to a tenth of the radiation emitted from Chernobyl, but about 10 times the amount needed to reach the level 7 threshold. They ...

Two workers at Japan's crippled Fukushima Daiichi Nuclear power station have been hospitalized as radiation-contaminated water seeped into their boots while laying power cables. They join 15 who've ...

TOKYO -- Japan raised the crisis level at its crippled nuclear plant Tuesday to a severity on par with the 1986 Chernobyl disaster, citing high overall radiation leaks that have contaminated the air, ...

TOKYO - Japan's nuclear regulators raised the severity level of the crisis at a stricken nuclear plant Tuesday to rank it on par with the 1986 Chernobyl disaster, citing the amount of radiation ...

TOKYO — Japan's nuclear regulators raised the severity level of the crisis at a stricken nuclear plant Tuesday to rank it on par with the 1986 Chernobyl disaster, citing the amount of radiation ...

Japan ranked its nuclear crisis at the highest possible severity on an international scale - the same level as the 1986 Chernobyl disaster - even as it insisted Tuesday that radiation leaks are ...

Japan raised the crisis level at its crippled nuclear plant Tuesday to a severity on par with the 1986 Chernobyl disaster, citing high overall radiation leaks that have contaminated the air, tap water ...