To engage the ships of Byzantine Empire was to risk the horrors of Greek fire, a medieval weapons system that empowered ships to spew forth flaming liquid on enemy ships and crew members. The secrets of Greek fire are lost to history, but historians and scientists continue to theorize its formula and deployment details. Join Robert Lamb and Joe McCormick as they discuss the weapon’s history, predominant theories on its specifics and the risks and rewards of secret keeping. (Originally published Aug. 22, 2017)