Qianna and her diverse group of friends meet famous scientists, inventors, and engineers by traveling through time and space on the Quantum Train. Readers follow along on these adventures as the kids visit Dr. Wu, George Washington Carver, and other greats of STEM history. These time travel adventures introduce students to physics, the creation of the artificial heart, and biochemical and electrical engineering. The graphic novels have a “hip-hop spin,” and the friends meet a diverse range of science heroes from various eras. The stories are supported by back matter including a glossary, suggested books and websites for further reading, explanations of key concepts such as particle accelerators, and biographical profiles on the featured scientists. VERDICT An engaging series perfect for fans of Max Axiom and other STEM graphic series. Great for encouraging readers who may be reluctant scientists, but who enjoy the graphic novel presentation.