Fukushima nuclear reactor radiation highest since 2011 leak
Radiation levels inside a damaged reactor at Japan-based Fukushima Daiichi nuclear power station were found to be at their highest since the plant suffered a triple meltdown in 2011. Officials believe melted fuel that escaped pressure vessel is causing such toxic levels. The 2011 meltdown, considered among the worst ever, was initiated by a tsunami triggered by a 9.0-magnitude earthquake.