Giant Human Family Tree Traces How People Moved and Married Over 300 Years

Giant human family tree traces how people moved and married over 300 years

Using crowdsourced data from a social genealogy site, a team of geneticists put together a family tree that includes 13 million people. Researchers used this behemoth of a family tree to investigate how much heredity influences longevity and to track shifts in migration habits and marriage taboos in Europe and North America over the last 300 years.