Revealing the truths of ancient North America, which include pyramids, state-of-the-art highways and productive innovators; how the societies seemed destined to remain a mystery due to European conquerors and no written records.

DNA evidence pointing to Asia as the origin of all human migration to North America; migration passages across the Bering Strait; ancient habitation sites across the continent; why scientists cannot yet agree on the ages of the sites.

Exploring the very first American culture, which is identified by a specialized hunting tool called the Clovis point; how the Clovis populated the Americas from coast to coast; how some of the Clovis people evolved into the last Paleo-Indians.

How the creative yet disparate peoples of North America developed innovations such as corn agriculture, permanent houses and religion about 5,000 years ago; exploring the only innovation common to these many different cultures.

How a group of ancient people developed a planned community on more than 900 acres of land to accommodate 4,000 to 5,000 inhabitants; how the city of Poverty Point functioned for 1,000 years and included one of the world's oldest pyramids.

The evolution of the continent's first coherent civilizations in Ohio about 3,000 years ago; studying the Adena, the first ancient American culture with a wide-ranging influence; the Adena's conical burial mounds and shared concept of an afterlife.