THE CIRCLE (China ) Panicked shoppers thronged supermarket aisles, grabbing bags of salt by the armful. They queued six deep outside wholesalers. Most went home with only one or two bags; the lucky ones managed to snag a five-year supply before stocks ran out. This was China in the days after Japan's Fukushima nuclear disaster, when people in cities up and down the country's highly populated east coast bought huge quantities of iodized salt in the misguided belief it would protect them from radiation. The 2011 disaster — the worst nuclear accident in 25 years — threw a major wrench into China's ambitious nuclear plans . It sent authorities scrambling to reassure people that they were not at risk of a similar catastrophe and sparked an immediate moratorium on new power plants. That ban was lifted this year. Now, China is gradually ramping up construction again. With around a dozen nuclear power plants in th...