How Five Comic Book Characters Changed the World

Okay, it's time for some fun stuff. How did these five comic book characters -- Superman, Popeye, Captain Marvel Jr, Donald Duck and Spider-Man's nemesis, Kingpin --change the world?

To find out the scientific, sociological and lasting pop-culture effects on the rest of the world of these particular characters, drop by Mental Floss and read 5 Comic Superheroes Who Made a Real-World Difference.