 Genetically stylish heads rock the most fashionable hats. This is Sandra Tsing Lo with the Lowdown on Science. Have you ever wondered why people's heads are shaped differently? The portion of the skull that protects the brain is the cranial vault. Its shape is inheritable and can have implications on health. But why is it so variable? Enter Seppa Govarts and team from KU Leuven in Belgium. They analyze the genes involved in shaping our heads.