In this episode of Fringe Beyond Limits, the hosts explore the medieval mystery of the Green Children of Woolpit — two green-skinned siblings who appeared in 12th-century England. They discuss eyewitness accounts, the girls haunting description of a perpetual twilight world, and multiple theories: alien visitors, interdimensional crossings, fairy folk, or more mundane historical explanations like refugee displacement and malnutrition. Through lively banter, the hosts weigh evidence, folklore, and modern science, leaving listeners with more questions than answers about this enduring riddle.