Ted Turner’s vision of news as global and continuous changed both the industry and society itself

NEW YORK, May 8: When the Space Shuttle Challenger exploded in 1986, Beth Knobel, a future TV news correspondent, was in graduate school. Emerging from class, she saw TV sets had been set up in the lobby. They were tuned to CNN, the 24/7 news channel that Ted Turner had launched about five years earlier, which was carrying the launch live.