The first Americans may have traveled to their new home along the coast, new research suggests. The findings clash with long-held views that the first Americans traveled through the interior of the continent from Siberia into North America, as textbooks have taught for decades.
The timeline Rasmus and his colleagues propose goes something like this: About 23,000 years ago, a single group splintered off from an East Asian population. The group, hailing from northeast Asia, crossed the Bering Land Bridge between northeast Asia and Alaska, eventually making their way to the rest of the Americas.
