Our colleague Andrew Cohen popped in the other day asking if we heard a This American Life episode that re-aired recently about “shipwrecks or something.” We had not and he was good enough to send it. What we got was a fascinating fifteen or so minutes hearing about two men who basically created underwater archeology starting in the late 1960s. One took a chance dive on a wreck in Turkey and, 50 years later, they are still unraveling clues about what they came to discover was an important Byzantine ship. Along the way the rewrote our understanding of Byzantine shipbuilding and commerce. This story is definitely worth a listen.