Twins appear to be unusually abundant in Nigeria's southwestern city of Igbo-Ora. For the past 12 years, the community has organized an annual festival to celebrate twins.
The twin birthrate nearly doubled between 1980 and 2014. Now it's going down among white mothers. What's behind the change?
Photographer Anush Babajanyan discovered an unusual belief about twins when she visited the Ivory Coast.
Molly McCully Brown, who has cerebral palsy, says that if she'd been born in a different era, she might have been sent to the "Virginia State Colony," an early landmark of the U.S. eugenics movement.
Say hello to Sir Carter and Rumi.
The newborns were evacuated from a rebel stronghold to the capital, Damascus, after lengthy negotiations earlier this month. Today, they died of heart failure as they awaited surgery.
Conjoined twin boys Moaz and Nawras have been evacuated out of one of Syria's most embattled areas for urgent medical treatment, following an international appeal to save their lives.
Scientists identified two genetic variants that make it more likely that a woman will give birth to fraternal twins. Knowing this might help develop safer fertility treatments.