The Twins Days Festival bills itself as the largest annual gathering of twins in the world. While the festival celebrates the unique bond between twins, it's also a hub for scientists studying what makes them so alike – and so different. Deema Zein reports from Twinsburg, Ohio. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy