Twins are pretty rare, accounting for just 3% of births in the U.S. these days. But new research shows that for primates 60 million years ago, giving birth to twins was the norm. When you purchase ...

Methods: We use data on dizygotic (DZ) and monozygotic (MZ) twins and singleton births from the first two waves of the Early Childhood Longitudinal Study—Birth Cohort (ECLS-B), a nationally ...

On November 20, Farrah Larry went in for her cesarean section knowing she was about to give birth to four healthy ... come out as two sets of identical twins. In conversation with People, the ...

who died of a heart condition days after Christmas and just over a week after giving birth to twins. Morgan Aubrey Hughes, 23, died Dec. 28 at Utah Valley Hospital in Provo after welcoming son ...