Afghan brothers Barangai (R), 6, and Shaista Khan, 4, pose for a portrait just outside a U.S. Marines combat outpost in Marjah, Helmand province, southern Afghanistan, on April 11, 2010. Maurico Lima/AFP/Getty Images hide caption

Retired cosmetics executive Mark Goldsmith, who runs the nonprofit Getting Out and Staying Out, gives inmates tips about how to handle job interviews. "People usually make up their minds in the first 30 seconds or minute," he says. Jim Zarroli/NPR hide caption

On their rides to school in the morning, Shelby Lynne says, her mother taught her daughters to sing harmony. Victory Tischler-Blue/Courtesy of the artist hide caption

In the early 1900s, Machu Picchu -- an Inca site perched high in the Andes mountains -- was well known to locals, but largely forgotten internationally. In 1911, explorer Hiram Bingham wrote about the site in National Geographic magazine and refocused international attention on the ruins. Eitan Abramovich/AFP/Getty Images hide caption

Tom Waits onstage in 2004, six years into his eligibility for induction into the Rock and Roll Hall of Fame. Michael Kappeler/Getty Images hide caption

Emily Fernandez, holding her daughter Bethany, uses her Nook e-reader to browse some books at a Barnes & Noble in Hackensack, N.J. Privacy advocates are concerned about the data that manufacturers may be able to collect from e-readers. Mark Lennihan/AP hide caption

Aretha Franklin and John Hammond in 1961. Sony BMG Music Entertainment/Getty Images hide caption