The US' history goes back thousands of years, thanks to a wealth of archaeological sites that give insight into the first humans in North America.

Archaeological sites older than the Roman Empire and the pyramids can be found in many US states. These sites shed light on the first humans who arrived in North America. Some are closed to the public ...

“Cahokia had to be created by large-scale migration from other places,” says Tom Emerson, director of the state transportation department’s archaeological program. “Nobody can breed that fast.” Why ...

Native American oral history and archaeological data alike suggest that farmers in parts of North America began abandoning major settlements such as Mesa Verde in Colorado and Cahokia in Illinois ...

The U.S. is full of archaeological sites, "but in most cases you could be standing right on top of one and never know it," Elic Weitzel told Newsweek.

Cahokia Mounds is the largest archaeological site in the Americas north of Mexico. 80 mounds remain from an original tally of 120.