Once Humans Crossed the Bering Land Bridge to America, Where Did They Go?

When the first bands of early humans made their intrepid journey into the Americas, they found plenty of room to spread out, according to a new study. Researchers who conducted a genetic analysis of Native Americans say that they can trace their ancestry back to two groups of migrants who arrived in America around the same time, between 15,000 and 17,000 years ago, but took distinctly different routes. The researchers argue that one group moved down the Pacific coastline all the way to the tip of South America, and the other group crossed into North America through an open land corridor between ice sheets and settled near the Great Lakes. Along the Pacific coastal route,