Book excerpt: Read Along or Enhanced eBook: The first African American woman to travel in space, Mae Jemison has broken barriers in science and medicine to become one of the most admired women worldwide. This fascinating book describes how Jemison refused to let anyone stand in the way of her dreams. She became a doctor and worked in the Peace Corps until NASA invited her to join the astronaut program. Today, she is an important advocate for science in education—especially for girls and women. Jemison also continues to push scientific research to improve life in developing countries.