Genealogy is the study of family lineage. While it is not a new practice, developments in DNA testing in recent decades brought a boom in enthusiasm about genealogy, with businesses using test results to provide clues about consumers’ genetic relatives and their geographic origins. There are a variety of reasons people might be drawn to genealogy, such as curiosity about a family’s deeper history among those who feel that they lack knowledge of or cultural ties to the past. One of the broader lessons of genealogy may be that far-flung people are more related than they might seem.