How do these seven Korean men generate about half a percent of the entire South Korean economy? No, it isn't the boxes and boxes of hair dye BTS members must go through.
The answer: They do it through their intensely devoted fans.
NPR's The Indicator from Planet Money went searching for what's behind the world-conquering k-pop band's massive influence. They found it all comes back to the symbiotic relationship between BTS and their fanbase, called ARMY.