Though rare, twins can be born with different skin ... These twins, called biracial twins, are a great example of how unique and diverse human genetics can be. Women in their 30s and 40s have ...

An ancient Roman cemetery in Trogir, Croatia, revealed a rare twin burial. Mana5280 via Unsplash In 2016, construction on a private parking lot in Trogir, Croatia, destroyed layers of an ancient ...