Once in North America, T. rex evolved and became widely distributed across Laramidia, the western half of the continent ...

Scientists thought the Bering Land Bridge mirrored the dry grassy plains found in the nearby Siberian steppe ecosystem. But ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study.

This roadless wilderness sits on the western edge of Alaska in an area known as the Seward Peninsula. Though few people travel here today, archaeologists believe that ancient populations migrated from ...

It says that the first Americans were the Clovis people—named for an archeological site located near Clovis, New Mexico—and that they walked across the Bering Land Bridge and spread into what ...