Unsung Heroes shines a spotlight on underrepresented voices throughout history. Featuring women and minorities who are often left out of history books, this biography series examines the work of professionals throughout US history and in the fields of science, technology, and social justice. Each book profiles 12 individuals and their impressive contributions as well as the challenges they faced. Yvonne Brill invented a rocket thruster. Katherine Johnson calculated the flight path for the first American sent to space. And Jerry Lawson created the first video game console. Often forgotten by historians, these women and minorities played incredible roles in advancing technology, but they were often not recognized or given the credit they deserved due to their gender or race. These mini biography collections introduce middle-grade readers to 12 remarkable individuals, profiling their life's work and the challenges they faced. A hi-lo reading format is paired with colorful spreads and insightful features, like stat boxes and sidebars, that engage striving readers and celebrate each hero's achievements. Includes a table of contents, captions, a glossary, resources, and an index.