Paul Butler, an extremely smart Facebook intern, created the map of the world above by plotting the friendships that exist between different cities; the brighter the lines, the more connections there are. “What really struck me, though, was knowing that the lines didn’t represent coasts or rivers or political borders, but real human relationships,” he explains. “Each line might represent a friendship made while traveling, a family member abroad, or an old college friend pulled away by the various forces of life.” Warm fuzzies, anyone? [via The Hairpin]