Summary: Japan on Thursday marked another grim anniversary: 10 years since a magnitude 9.0 earthquake off the nation's coast triggered a 130-foot-high tsunami that crashed ashore at more than 500 miles per hour. It killed thousands and triggered a nuclear disaster at a plant in Fukushima. Nick Schifrin looks at that nuclear explosion in detail, and Grace Lee reports from Tokyo on the quake's aftermath. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
