Teen Trailblazers: 30 Fearless Girls Who Changed the World Before They Were 20True stories of young women who made a big difference! From authors to activists, painters to politicians, inventors to icons, these inspiring teenagers are proof that girls can change the world. Joan of Arc. Anne Frank. Cleopatra. Pocahontas. Mary Shelley. Many of these heroines are well known. But have you heard of Sybil Ludington, a 16 year old daughter of an American colonel who rode twice as far as the far better remembered Paul Revere to warn