Astrophysicist and folklorist Moiya McTier reveals that there are potentially too many galaxies for us to comprehend. Sara Kiley dives into the evolutionary history of ancient sharks and how climate changes shaped their adaptations. Rachel explains how ants act as mini surgeons, performing intricate procedures to help injured colony mates. Discover the surprising possibilities that ant saliva holds for future research and intriguing parallels between ancient and modern marine life amidst current climate challenges.

PopSci's Laura Baisas discusses ancient tweezers and screams, Rachel explains leprosy past, present, and future, and Sara Kiley talks about tools and weapons made from space rocks. They delve into the mystery of ancient iron artifacts and explore the use of meteorites in construction. The podcast also addresses the increase in leprosy cases and dispels misconceptions about the disease. Additionally, they uncover Roman tweezers and ancient hair removal practices, discussing cultural reasons and comparing them to modern methods.

Danielle Bainbridge delves into the chilling world of forbidden experiments, discussing the ethical dilemmas of language deprivation studies and their implications for human development. Sara Kiley brings a lighter touch, arguing that sometimes being annoying can be preferable to being deadly, offering surprising insights on human behavior. The conversation weaves through dark historical experiments and the nuances of social interaction, making for a captivating exploration of the bizarre sides of science and humanity.