Ancient Americans Crossed Back into Siberia in a Two-Way Migration, New Evidence Shows

[Scientific American Content: Global]

Scientists have long known that ancient people living in Siberia made their way into what is now North America. Mounting DNA evidence suggests migration also happened in the opposite direction
The sun rises over the Continental Divide in Bering Land Bridge National Preserve in Arctic Alaska.
Natural History Library/Alamy Stock Photo

https://www.scientificamerican.com/article/ancient-americans-crossed-back-into-siberia-in-a-two-way-migration-new-evidence-shows/