A television station is a business organization or other enterprise which transmits or broadcasts various contents on a television. Television stations must be authorized by the government. Pertinent rules and regulations vary around the world. Television stations need a broadcast license by the government, which sets limits on what types of television programs can be programmed for broadcast. Television stations broadcast a minimum amount of certain programs types, such as public affairs messages among other conditions. Commercial television stations are owned independently or else affiliated with a television network. Television stations broadcast programs on entertainment, health, world affairs apart from holding talk shows on current news.