A new history podcast will explore the 20th century in a novel way – by using Billy Joel’s “We Didn’t Start The Fire”. The show, titled WDSTF, will spend each episode taking a line from the song and diving into the history of each reference. The first episode – covering former President Harry Truman – is out now, with new episodes every week. How much of ‘We Didn’t Start The Fire’ can you recite from memory?  Are there any references you never got?