BATON ROUGE, LOUISIANA—According to a statement released by Louisiana State University, professor emeritus Brooks Ellwood and his colleagues have radiocarbon dated microscopic bits of charred mammal ...

This UNESCO World Heritage site in Collinsville, Illinois, lets visitors climb a 100-foot earthen mound built nearly a thousand years ago.

The enormous earthen monument Poverty Point, built on a Mississippi River bayou some 3,200 years ago, is an impressive feat of engineering. Hunter-gatherers moved more than 26.5 million cubic feet ...

Get exclusive reporting, live Q&As and ad-free reading. LiveScience The enormous earthen monument Poverty Point, built on a Mississippi River bayou some 3,200 years ago, is an impressive feat of ...

Before our nation was formed with its institutions of economy, justice, religion and foreign relations, there were other nations here long before us - with their institutions of economy, justice, ...