A recent surgery in the U.S. saw a parasitic twin being successfully removed from a 10-month-old girl.
When a twin is diagnosed with cancer, the sibling has a much higher probability of developing cancer as well, according to a recent study.
Twenty-two-year-old Maribel Valencia gave birth to twins that were just minutes apart but also born in different years.
A new government report released by the Centers for Disease Control and Prevention's National Center for Health Statistics shows that the rate of twin births has hit an historic high.
A new study examines how genes and environment both play a critical role in shaping an individual's intelligence. The findings are published in the journal Psychological Science.
Link and Logan Gorveatt are identical twins. However, the two boys were born 18 days apart, thanks to a very unusual delivery.
Is beauty really in the eye of the beholder?
The "twinning effect"--a language phenomenon that can disadvantage some twins as opposed to their single-born counterparts--can result in developmental delays. However, a recent study published in the Journal of Speech, Language and Hearing Research found that the issue was more common among identic...