Nuclear power is unsafe at any wattage, but especially so when multiple reactors get sited on a fault line. The radioactive contamination got carried by Pacific winds all the way to the United States, where it started killing Americans right away (.PDF):
[The authors] note that their estimate of 14,000 excess U.S. deaths in the 14 weeks after the Fukushima meltdowns is comparable to the 16,500 excess deaths in the 17 weeks after the Chernobyl meltdown in 1986. The rise in reported deaths after Fukushima was largest among U.S. infants under age one. The 2010-2011 increase for infant deaths in the spring was 1.8 percent, compared to a decrease of 8.37 percent in the preceding 14 weeks.
That’s what, nearly five 9/11s? Why yes it is.