"Inspiring profiles of six 20th-century trailblazers."-Kirkus Reviews Break through the glass ceiling with six incredible women whose scientific research changed the world. Katherine Coleman Johnson. Eugenie Clark. Marie Tharp. Gertrude Elion. Florence Hawley Ellis. Eleanor Margaret Burbidge. Acclaimed author Laurie Lawlor deftly paints portraits of each of these figures who refused to take no for an answer, pursuing their passions through fieldwork, observations, laboratories, and research vessels in the face of sexism, racism, and more. This diverse group of women, all with awe-inspiring accomplishments, were active mentors and determined people who wouldn't take no for an answer. The beautifully written book includes key photographs, a glossary, and source notes. A 2018 NSTA-CBC Outstanding Science Trade Book for Students K-12!