What's the difference between ancient Romans and present-day Italians?

The first paper on the genomics of ancient Romans was finally published today at Science [LINK]. It's behind a paywall, but the supplementary info is freely available here. Below is a quick summary of the results courtesy of the accompanying Ancient Rome Data Explorer. I'm told that the genotype data from the paper will be online within a day or so at the Pritchard Lab website here. I'll have

* This article was originally published here