Reuters: In the three years since the Fukushima disaster, Japan's utilities have pledged $15 billion to harden their nuclear plants against earthquakes, tsunamis, tornadoes and terrorist attacks.
But as Japan's nuclear safety regulator prepares to rule on whether the first of the country's 48 idled reactors is ready to be come back online, the post-Fukushima debate about how safe is safe enough has turned to a final risk: volcanoes.
The Nuclear Regulation Authority (NRA) has already said the chance...