Twins have been rare in human history and for that reason can seem special. Many cultures associate twins with health and ...

A metro couple is facing uncertainty after they found out their pregnancy is an extremely rare form of twins called mono chorionic monoamniotic twins. OU Health says Oklahoma hasn't seen a case of ...

Conjoined twins—the rare identical twins who fail to separate completely--represent a form of human life that should be respected. There are many variations on typical human development of which we ...

From Romulus and Remus—the myth of the twin brothers who founded the city of Rome—to the synchronized speech of Australia's "Twinnies" Paula and Brigette Powers, identical siblings have long inspired ...

Mono-mono twins are an incredibly rare type of identical twins who share both a placenta and an amniotic sac. While this makes for a high-risk pregnancy, advances in monitoring and treatment have ...