On National Twin Day and beyond, a story about identical twins who married identical twins; their babies are biological ...

The Salyher family is a set of female twins who married male twins and now raise their children as siblings. ABC News medical correspondent and twin himself Dr. Darien Sutton takes a closer look.

Harry Poorman, and the latter's twin brother, Philip, married Miss Sadie, the twin sister of Miss Florence Poorman. View Full Article in Timesmachine » Advertisement ...

The twins were so alike despite having never met each other, that they both drew the same thing when asked to by a doctor ...

Even in our final school exams, Hussaina was registration number 010 while I was 011,” said Hassana, adding that “for a long time, we planned to marry twins and even our family members ...

Why is the connection between twins so strong? Created with Sketch. Twins are born married. They share a primary attachment that is irreplaceable and forms a lifelong attachment and bond as well ...

About 33 in every 1,000 human births in the US are twins, a rate that has climbed in recent decades as more women marry later and take fertility drugs or employ in vitro fertilization. Identical ...

Why is the connection between twins so strong? Created with Sketch. Twins are born married. They share a primary attachment that is irreplaceable and forms a lifelong attachment and bond as well ...

After identical twin sisters from Delaware married identical twin brothers from Tennessee, the children they are raising together share in a rare biological phenomenon. When identical twin sisters ...