While the world is focusing on the radioactive water released from the Fukushima nuclear plant in Japan, the country is grappling with other big questions about its use of nuclear energy. Japan dramatically changed its attitudes after Fukushima melted down in 2011. But since then, it's faced its share of problems with other energy sources and prices. Science correspondent Miles O'Brien reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders