Their names may not be familiar, but their work is recognizable around the world. These titles in the STEM Trailblazer Bios series introduce cutting-edge engineers and scientists through accessible text and high-quality color photographs. Each biography traces the engineer's or scientist's childhood, guiding ambitions, education, and indomitable spirit that led them to succeed in a STEM career. Aerospace Engineer Aprille Ericsson examines how she didn't let her race or gender stop her from becoming the first African American woman at Goddard Space Flight Center to earn a PhD in engineering or beginning a career at NASA, working on space missions and studying Earth's climate change. With a focus on modern engineers and scientists, this series fills a gap in STEM collections.