Broadcast journalism is the field of news and journals which are broadcast by electronic methods instead of the older methods, such as printed newspapers and posters. It works on radio (via air, cable, and Internet), television (via air, cable, and Internet) and the World Wide Web. Such media disperse pictures (static and moving), visual text and sounds. Description Broadcast articles can be written as "packages", "readers", "voice-overs" (VO) and "sound on tape" (SOT). A "sack" is an edited set of video clips for a news story and is common on television. It is typically narrated by a reporter. It is a story with audio, video, graphics and video effects. The news anchor, or presenter, usually reads a "lead-in" (introduction) before the package is aired and may conclude the story with additional information, called a "tag". A "reader" is an article read without accompanying video or sound. Sometimes an "over the shoulder digital on-screen graphic" is added. A voice-over, or VO, is a video article narrated by the anchor. Sound on tape, or SOT, is sound or video usually recorded in the field. It is usually an interview or soundbite. Radio was the first medium for broadcast journalism. Many of the first radio stations were co-operative community radio ventures not making a profit. Later, radio advertising to pay for programs was pioneered in radio. Later still, television displaced radio and newspapers as the main news sources for most of the public in industrialized countries. Some of the programming on radio is locally produced and some is broadcast by a radio network, for example, by syndication. The "talent" (professional voices) talk to the audience, including reading the news. People tune in to hear engaging radio personalities, music, and information. In radio news, stories include speech soundbites, the recorded sounds of events themselves, and the anchor or host. Some radio news might run for just four minutes, but contain 12–15 stories. These new bulletins must balance the desire for a broad overview of current events with the audience's limited capacity to focus on a large number of different stories. The radio industry has undergone a radical consolidation of ownership, with fewer companies owning the thousands of stations. Large media conglomerates such as Clear Channel Communications own most of the radio stations in the United States. That has resulted in more "niche" formats and the sharing of resources within clusters of stations, de-emphasizing local