Nancy Cartwright voices the mischievous 10-year-old son, Bart, in the animated TV show, The Simpsons. "I don't know of any other character that has more catch-phrases than Bart," she says. Courtesy of FOX hide caption

itoggle caption Courtesy of FOX

Is science more like a pyramid, or a sun-dappled patch of ground? Fayez Nureldine/AFP/Getty Images hide caption

itoggle caption Fayez Nureldine/AFP/Getty Images