We see it a lot in films where someone's life splits into two timelines and it features in the Marvel universe, but is the mutiverse real? Laura and Emma T. talk about quantum physics and the various theories that predict the multiverse as well as discussing practical applications of concepts related to physics such as finding probabilities and quantum entanglement. They also talk about some of the ways that multiverses are represented in the movies and whether they match with what physics predicts.