Ruth is an award-winning author of books and articles, mainly for children and young adults. Her three companion novels...Blue Thread, The Ninth Day, and Seven Stitches...combine speculative and historical fiction with a time travel twist. Blue Thread won the Leslie Bradshaw Award for Young Adult Literature in 2012 and was listed by the American Library Association as one of the best feminist books for young adults. Ruth's 10 nonfiction books focus on history and biography, while her articles range from leeches to Einstein’s refrigerator. She lives in Portland, Oregon, with her husband, innumerable dust mites, and a vivid imagination.