History.com: 8 Moments When Radio Helped Bring Americans Together

These are just a few of the historic radio broadcasts that seemed to have the whole nation listening. This article discusses eight of the most seminal moments in radio -- from KDKA's 's live nighttime Fireside Chats, the 'Fight of the Century,' live report from Pearl Harbor, reports under Nazi bombfire and baseball's 1951 "Shot Heard 'Round the World."