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Now Playing: 02-21-12 Marketplace

"Burn" host Alex Chadwick discusses the newly released audio recordings from the day of the Fukushima Daiichi nuclear meltdown last year. Walmart's fourth quarter earnings slumped by nearly 15 percent due to its low prices. Sony will soon release its handheld gaming device, Playstation Vita. Will it be a success? Journalist Tracie McMillan talks about her journey to see what it takes to eat well in America. And we visit the high school where "Ferris Bueller's Day Off" was filmed to learn more about how life turned out for the actual students there.