This was a nice ten-year old book that segued nicely with the plague book, about what we can tell about human history from “DNA stuff.” It’s a pop science book so not too in the weeds and combines the things we know from science with anecdotes about why individual people might care, or stories about using DNA to find long-lost family, that sort of thing. The author is Australian so there’s more about Australian history than US stuff which was just fine by me.