10 People You Probably Didn’t Know Made a Positive Impact on the Planet

History doesn’t remember them all so fondly.

Clockwise from top left: President Richard Nixon (flickr), Marilyn Monroe (Wikimedia Commons), and King Henry VIII (Snappy Goat)

We’re all aware of the good deeds done by the likes of Florence Nightingale and Mother Teresa, but Benedict Arnold? Wasn’t he the guy whose name, like Judas Iscariot’s, is synonymous with traitor? History is filled with unlikely heroes and heroines — some of whom have…