World at 'peak twin' as birth rates reach historic high, study finds

Matching sets of siblings and pose for a group photo during the annual Twins Days festival in Twinsburg, Ohio. Photograph: AFP/Getty Images

Matching sets of siblings and pose for a group photo during the annual Twins Days festival in Twinsburg, Ohio. Photograph: AFP/Getty Images

source https://www.theguardian.com/science/2021/mar/12/world-peak-twin-global-twinning-birth-rates-reach-historic-high-study-ivf-fertility-services