This is why Cassidy and her colleagues were surprised to find remains of a Celtic tribe that lived during the Iron Age in Britain from around 100 BCE to 100 CE where it appeared, after studying their ...

This is why Cassidy and her colleagues were surprised to find remains of a Celtic tribe that lived during the Iron Age in Britain from around 100 BCE to 100 CE where it appeared, after studying ...

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 ...