They were the heroes to our modern-day superheroes, precursors to the action star. They’re making a comeback in characters such as Robert Downey Jr’s Iron Man, because swashbucklers don’t die. They just retreat for a while, before returning in triumph.
Researcher Michael Scullin of Baylor University, Texas, was so annoyed at waking up time and again with a song stuck in his head, that he decided to delve into the science behind earworms. Here’s what he found.