Professor John Lampropoulos of the University of Rochester on engineering in the ancient world and mysteries still unsolved
It was so refreshing to have David K Johnston substitute for Bob Smith. I often have to check what station I am listening to when Bob is on. David had interesting guests and steared stimulating discusions. Unfortunately, I often find myself turning the radio off when Bob and his guests begin their "rants". A great example was Monday 8-13 at noon. Please pass my thanks and appreciation on to David.
A long time listener.