In the future, a hard drive full of photographs may serve as the digital analog of a pile of old pictures. iStockphoto.com hide caption

itoggle caption iStockphoto.com

A Union Army band marches into the "Crossroads of Destiny" battle at the 150th Gettysburg Anniversary National Civil War Battle Re-enactment, on Thursday. The re-enactment activities officially began Thursday and last through Sunday. Chloe Coleman/NPR hide caption

itoggle caption Chloe Coleman/NPR

A young man stitches decorative seat covers and curtains in Rawalpindi, where he works for more than 12 hours a day. Noor Za Din hide caption

itoggle caption Noor Za Din

Bobbie Hanvey and his son Steafán Hanvey, in Northern Ireland. Courtesy of Peter Muhly hide caption

itoggle caption Courtesy of Peter Muhly