Bong Ng Kho, an author focused on skull bone marrow's role in aging, discusses how this area becomes vital for blood-cell production as we age, offering potential insights into neuroinflammation. Guy Leckenby, a researcher studying lead-205 isotopes, illuminates new methods for dating the Solar System, showcasing how stellar conditions influence their decay. Together, they highlight the surprising resilience of skull marrow and innovative cosmic dating techniques, leaving listeners intrigued by aging and the cosmos.