2+ day, 8+ hour ago  (31+ words) Historian chronicles how debates that define U.S. history can help us navigate today's politics'CBS News Historian chronicles how debates that define U.S. history can help us navigate today's politics...

2+ week, 4+ day ago  (45+ words) While Thomas Edison's cylinders were the first to play recorded sound, they were impractical " leading Emile Berliner to come up with a better way to play music: The gramophone, invented in 1887, which played flat discs. Jane Pauley reports. These United…...