Retraces the paths taken by humanity's prehistoric ancestors to explain the role of migration in human history, describing how scientists are forging new understandings about ancestry and civilization, and explores the future of human migration.

Judy Dodge Cummings has taught American history for 25 years. She has a BA in Broadfield Social Studies and an MFA in Creative Writing for Children and Teens. She is the author of The American Revolution: Experience the Battle for Independence for Nomad Press, plus numerous articles and books including The Civil War and Exploring Polar Regions. Judy lives in Reedsburg, Wisconsin.

Tom Casteel is an illustrator and cartoonist with a master's degree from the Center for Cartoon Studies. Tom has illustrated several books for Nomad Press, including Natural Disasters: Investigate Earth's Most Destructive Forces; Cities: Discover How They Work; and Explorers of the New World: Discover the Golden Age of Exploration. Tom lives in South Bend, Indiana.