In this lesson, the third in a set of lessons exploring migration, genetic markers, markers in context, and the Genographic Project (a five-year study of human origins and migration based on genetic markers), students will examine other markers of human migration, uncovered by such fields as archaeology, paleontology, cultural anthropology, linguistics, and history. Students will begin by conducting a hands-on study of patterns of genetic markers. They will consider ways in which contextual information provides scientists with clues about ancient migratory patterns. An extension activity provides an opportunity for students to investigate the controversy of who first migrated to the Americas and develop hypotheses based on scientific research using a collection of websites and the Atlas of the Human Journey.