DNA Puts Humans in the Americas at the Height of the Last Ice Age, but the Debate Isn’t Over

Compared to the rest of the world, the American continent welcomed its first humans relatively later. You’d think that this (relative) proximity to modern times should make it easier to study—but reality isn’t so straightforward, it seems.

At least, that’s one takeaway from a recent review of genomic research on the arrival of humans in the Americas based on a collection of relevant papers and datasets. From the analysis, the University of Kansas (KU) researchers outlined three migration models for…