Shiva Khademi

Aug 2, 2023 | nationalgeographic.com | John Perritano |Jason Reed |Shiva Khademi

Each year, twin brothers and sisters from across the planet travel to Twinsburg, Ohio, to participate in the Twins Days Festival, taking place this year on August 4-6. It is the largest gathering of twins in the world, and it will get even larger if current trends prevail. From about 1915 to 1980, one out of every 50 babies born in the United States was a twin. That number has since skyrocketed to one out of 30, and there’s no indication it is abating.