Natalie Hill, 16, standing, who is president of the Pleasant Hill Teen Advisory Group works with a group of teens planning "World Party -- A Multiethnic Extravaganza" at the Pleasant Hill Library in Pleasant Hill, Calif., on Thursday, July 11, 2013. Hill will be the one of the subjects in the national project "StoryCorps," which provides Americans from varied backgrounds and beliefs the opportunity to share, record and preserve stories of their lives. Hill has been volunteering at the library for over two years. Teens working on the project are from left Dean Shim, 19, Alanna Dangerfield, 13, and Abhinav Singh, 13, all of Pleasant Hill. (Susan Tripp Pollard/Bay Area News Group)