Lively is a sensor that can be attached to a pill box, keys or doors. It lets people know whether aging parents are taking their medicines or sticking to their routines. Courtesy of Lively hide caption

itoggle caption Courtesy of Lively

Minnesota, Washington and Oregon topped the ranking, which looked at 26 variables, including affordability and whether patients could get good paid care at home. Alabama and Kentucky came in last. Fred Froese/iStockphoto hide caption

itoggle caption Fred Froese/iStockphoto

The Liftware device, shown here as an early prototype (left) and the final design, starts up automatically when it's lifted from the table. There's no "on" switch to fumble with. Ina Jaffe/NPR hide caption

itoggle caption Ina Jaffe/NPR

With their matching blue wigs, the dancers in the Palm Springs Follies chorus (they're called the "long-legged lovelies") give a whole new meaning to the cliche "blue-haired old ladies." Ina Jaffe/NPR hide caption

itoggle caption Ina Jaffe/NPR

More and more older adults are becoming entrepreneurs instead of retiring, like Paul Tasner of Pulpworks, who spoke at the 2013 Global Social Venture Competition in California. Courtesy of Kevin Warnock hide caption

itoggle caption Courtesy of Kevin Warnock

Manuel "Manny" Aguirre, 80, has been mixing cocktails at Musso and Frank Grill in Los Angeles for more than two decades. He works part time and could retire — but he doesn't want to. Courtesy of Musso and Frank Grill hide caption

itoggle caption Courtesy of Musso and Frank Grill