III. TV set. Television is the main source of news for many households around the world. TV does what none of the other media can: it brings the sight and sounds of some important news events by means of filmed, taped or live reports. Like regular radio news bulletins, daily TV news programmes provide only brief accounts of relatively new stories. But the visual aspect of TV news story can often help viewers understand the story. In addition to daily news reports, television covers special news events. Coverage of such an event may replace many hours of regular TV shows. Television also broadcasts in-depth programmes that help explain a story or subject. Such programmes, which run from half an hour to three hours, include documentaries and interview programmes. Most documentaries are filmed or taped. They may perform such subjects as crime, foreign policy, or race relations. Interview programmes, which are usually broadcast live, may consist of a panel of journalists who ask questions of a major figure in the news.