While reading 8 Historical Mysteries That Would Make Great 'Doctor Who' Episodes, I came across the following:
Doctor Who has co-opted a number of historical figures and events, putting the Time Lord in position to explain some of the world’s biggest mysteries. We’ve had Agatha Christie’s disappearance, Shakespeare’s missing play, and the Mary Celeste’s missing crew.
I was a little confused as I had no idea those were real life mysteries. It got me thinking, which Doctor Who episodes "explain" real life mysteries?