View Full Version : Ancient DNA suggests the first Americans sidestepped the glaciers

08-10-2016, 08:58 PM

Ask any schoolkid how the first people came to the Americas, and you might get some version of the following: They crossed a spit of land connecting Alaska and Siberia and made their way south between melting glaciers at the end of the last ice age. Until recently, science agreed. But mounting evidence has shown that the dry land exposed by the melted route—known as the ice-free corridor—may not have been passable until long after humans had already settled the Americas. So when did it become a viable route for people? Using ancient DNA, along with the remains of pollen, plants, and animals collected from lake sediments, a new study has an answer: about 12,600 years ago. This suggests that the earliest humans to make their homes in the New World, including people from the Clovis civilization, must have taken a very different route.

08-11-2016, 03:06 PM
The first Americans may not have been the ancestors of today's Amerindians, but another people who came from Southeast Asia. Do you believe in that?