To the dismay of insomniacs and shift workers across the country, CBC Radio One has quietly dropped an unassuming but prized corner of its schedule: the carousel of highlights from public broadcasters around the world that ran from 1 to 5:30 am. CBC Radio Overnight offered listeners welcome—and rare—insight into the perspective on other countries on world news. A  few remnants remain, including a half hour of the BBC at 4 am, and something called The World, at 1 am. Contrarian counts this a big loss....