In this week’s World in Words, writer Dave Tompkins on how the sound-distorting vocoder morphed from a wartime security device into one of Hip Hop’s favorite toys. Also, English teachers in South Korea don’t come cheap. One Korean school is trying an alternative: a robot. Plus, new limits for foreign reporters in China, and the man who brought Jägermeister out of the forests of Saxony onto campus parties everywhere […]