Roberto de Carvalho (left), who maintains a truck fleet in Recife, Brazil, is shown here with his daughter Sandra, 22, wife Enilda and daughter Susana, 16. The family makes just enough to belong the rapidly expanding ranks of the country's middle class, though they still can't afford a house or even a car. Melissa Block/NPR hide caption

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Microwave pralines are easier to make than stovetop pralines, and just as tasty. Ed Anderson/Chronicle Books hide caption

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The new Moto X launched Thursday in New York City. Bryan Bedder/Getty Images hide caption

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Born in Texas and settled in Nashville, Tenn., Guy Clark has mentored generations of artists, including Rodney Crowell, Lyle Lovett and Steve Earle — all of whom cite his keen editing skills and prize his stamp of approval. Jim McGuire/Courtesy of the artist hide caption

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ATF Special Agent Charles Houser runs the National Tracing Center in Martinsburg, W.Va. Melissa Block/NPR hide caption

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Gun enthusiast Paul Gwaltney at Blue Ridge Arsenal, in Chantilly, Va. Gwaltney, an NPR listener, agreed to host a discussion about guns with friends and colleagues. Becky Lettenberger/NPR hide caption

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Led by the Rev. Willie Phillips (center), protesters march in February against violence in and around Club Majestic. Mike Haskey/Courtesy of The Ledger Enquirer hide caption

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Grapes, a spiky cluster of wooden stools from the Qing Dynasty (1644-1911), is part of Ai Weiwei's repurposed furniture series. Cathy Carver/Courtesy Hirshhorn Museum hide caption

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Heidi Accola works a stand at the farmers market in Baraboo, Wis. She runs a 1-acre organic farm with her husband, but she says they don't talk politics at home because it gets too heated. Melissa Block/NPR hide caption

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Wisconsin Senate candidate Tammy Baldwin sits with state delegates during the Democratic National Convention in Charlotte, N.C., on Sept. 5. David Goldman/AP hide caption

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The buildings will be incorporated into a multimillion-dollar construction project on the same site. Doriane Raiman/NPR hide caption

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