Our Guest This Week, Dr. Rachel Armstrong, is a Senior Lecturer at the University of Greenwich and Head of Project Persephone (Part of The 100 Year StarShip, Icarus Project). We Discuss, her work and perspective as well as topics that include the oldest form of dentistry, Life amongst the stars, Warp Drive Tech, and Bacteria and their place in our world. We also Discuss how meaningful it is for scientists to look outside their own discipline and ask the question "Is the World we live in constructed in the correct and most efficient way?"