Henrietta spent years measuring star positions and sizes from photographs taken by the telescope at the Harvard College Observatory, where she worked. After Henrietta observed that certain stars had a fixed pattern to their changes, her discovery made it possible for astronomers to measure greater and greater distances—leading to our present understanding of the vast size of the universe.An astronomer of her time called Henrietta Leavitt “one of the most important women ever to touch astronomy,” and another close associate said she had the “best mind at the Harvard Observatory.” Henrietta Leaveitt's story will inspire young women and aspiring scientists of all kinds and includes additional information about the solar system and astronomy.

    Elizabeth came from a struggling middle-class family in Oklahoma City. After a heart attack put Elizabeth’s father out of work, she helped out by babysitting, waitressing, and sewing, all while shining as a star member of her school’s debate team. Debate taught Elizabeth how to fight with her words, a skill that eventually won her a state championship and a college scholarship. As a lawyer and law professor, Elizabeth learned why it was so difficult for working-class families like her own to advance economically, and today she continues to fight (with her words) for the poor and middle-class in her role as a senator. Releasing in time for the 2018 election season, Elizabeth Warren emphasizes the importance of being outspoken—of using your words to fight for both yourself and for those who need your help.

    In rural Ohio, she managed a household of 11 kids alongside a less-than-supportive husband. One day, at age 67, she decided to go for a nice long walk . . . and ended up completing the Appalachian Trail.   With just the clothes on her back and a pair of thin canvas sneakers on her feet, Grandma Gatewood hiked up ridges and down ravines. She braved angry storms and witnessed breathtaking sunrises. When things got particularly tough, she relied on the kindness of strangers or sheer luck to get her through the night. When the newspapers got wind of her amazing adventure, the whole country cheered her on to the end of her trek, which came just a few months after she set out. A story of true grit and girl power at any age, Grandma Gatewood proves that no peak is insurmountable.