"The Fukushima meltdown showed how some nuclear plants are vulnerable to cooling-system failures. That might be of interest to Al Qaeda, which considered attacking US nuclear facilities after 9/11, a new study says."

"Japan disclosed Monday that its nuclear accident was more severe in its first days than it had previously admitted -- casting new light on how Tokyo's early handling of the disaster briefly sent its relations with the U.S. into one of the tensest periods in years."

Radiation in the No. 1 reactor building at the stricken Fukushima nuclear plant in Japan has been measured at the highest levels ever, making it virtually impossible for human workers to do much work there.

"'I watch them die, young and old,' [Spokane tribal gravedigger Harold] Campbell said. 'I think it’s caused by the radiation.' The radiation is from the Northwest’s only open-pit uranium mines -- an all-but-forgotten chapter of Washington’s Cold War history."

"The Energy Department ignored the law by shutting down a controversial Nevada nuclear waste site because of opposition within the state, Republican and Democratic lawmakers complained at a hearing on Wednesday."

"The operator of the stricken Japanese nuclear power plant said on Friday that more radioactive water could begin spilling into the sea later this month if there is a glitch in setting up a new decontamination system."

"Japan will pay schools near the quake-ravaged Fukushima nuclear power plant to remove radioactive top soil and set a lower radiation exposure limit for schoolchildren after a growing outcry over health risks."

"Westinghouse Electric Co. and U.S. regulators are wrangling over statements made about the safety of the AP1000 nuclear reactor design, which could be used in at least 14 proposed reactors in the United States."