For millennia, couples have had to decide where to live. "For the vast majority of human history," says Lara Cassidy, a geneticist at Trinity College Dublin, "societies were centered around ties ...

Geneticist Lara Cassidy wasn't surprised to find several generations of the same family buried in an Iron Age cemetery near Dorset, England. But she was quite surprised to find most of them were ...

"That was really jaw-dropping — it's never been observed before in European prehistory," said study co-author Lara Cassidy, a geneticist at Trinity College Dublin.

LARA CASSIDY: And for the vast majority of human history, societies were sort of centered around ties of kinship. So you're deciding whose family you're going to live with.

For millennia, couples have had to decide where to live. "For the vast majority of human history," says Lara Cassidy, a geneticist at Trinity College Dublin, "societies were centered around ties ...

For millennia, couples have had to decide where to live. "For the vast majority of human history," says Lara Cassidy, a geneticist at Trinity College Dublin, "societies were centered around ties ...

Ancient DNA reveals that during the Iron Age, women in ancient Celtic societies were at the center of their social networks — unlike previous eras of prehistory.