And in Japan, scientists say the radiation levels inside a damaged reactor at the Fukushima nuclear power plant are at the highest point since the nuclear plant’s meltdown six years ago. On March 11, 2011, a massive earthquake and tsunami hit the northeast coast of Japan, killing 20,000 people. Another 160,000 then fled the radiation in Fukushima. It was the world’s worst nuclear disaster since Chernobyl. Experts are calling the radiation levels now detected at the plant “unimaginable.”