Carla Mooney has written more than 70 books for children and young adults. She is the author of several books for Nomad Press, including Terrorism: Violence, Intimidation, and Solutions for Peace; Evolution: How Life Adapts to a Changing Environment; The Holocaust: Racism and Genocide in World War II; and Comparative Religion: Investigate the World through Religious Tradition. She lives in Pittsburgh, Pennsylvania.

Sam Carbaugh has illustrated several books for Nomad Press, including Forensics: Uncover the Science and Technology of Crime Scene Investigation and Shakespeare: Investigate the Bard's Influence on Today's World. He wrote and illustrated Comics: Investigate the History and Technology of American Cartooning. Sam lives in Grand Rapids, Michigan.