Some of the most mysterious ancient artifacts ever discovered were found in the US. Deep beneath the soil of North America lies a ... this perfectly circular structure known as the Miami Circle ...

New research shows that North America is slowly sinking into the earth, and there's nothing we can do to stop it.

During the Cretaceous, a shallow inland sea called the Western Interior Seaway split North America into two landmasses—and the giant reptile’s fossils have been found on both sides of it.

In the Triassic era, North America was part of Pangea, a supercontinent whose massive scale sparked extreme monsoons that ...

Scientists have discovered that a tooth found near Old Crow, Yukon, in 2018 belonged to the oldest known woolly mammoth in North America ... track the movements of ancient mammoths from hundreds ...

He found nearly 300 tools on Parsons Island and says they're around 22,000 years old. That's thousands of years before many ...