Fukushima 101: 5 questions answered about Japan's crippled nuclear reactors

Two-and-a-half years after the disaster, the nuclear plant continues to pose problems. Here's what you need to know now. 

By Justin McCurry,
http://www.csmonitor.com/World/Asia-Pacific/2013/1005/Fukushima-101-5-questions-answered-about-Japan-s-crippled-nuclear-reactors