Return to Fukushima. Journalists are taken on a tour of the Fukushima Daiichi nuclear power plant, the site of the world's worst nuclear accident since Chernobyl 25 years ago. A year ago a mega earthquake and tsunami knocked out the six-reactor plant on the coast some 150 miles northeast of Tokyo. 　　The backup power systems meant to keep its radioactive fuel cool were disabled during last year's earthquake and tsunami. That lead to meltdowns, explosions and radiation spewing into the environment and forcing the evacuation of more than 80,000 residents. Some recovery workers still fear the future. 　　Recovery Worker, Kazumaru Sasaki: "I'm worried about harmful effects of the radiation that may come to effect in the future." 　　Recovery Worker, Tatsuya Tamaki: "We will end this crisis in our generation and will not let our children take over this work." Last year, a corps of workers dubbed the "Fukushima Fifty" by media stayed behind at the facilty as they risked their lives to contain the crisis. Their names were never made public. (Deborah Lutterbeck, Reuters)