CBS Corporation operates as a mass media company worldwide. The company operates in four segments: Entertainment, Cable Networks, Publishing, and Local Media. The Entertainment segment distributes a schedule of news and public affairs broadcasts, and sports and entertainment programming; produces, acquires, and/or distributes programming, including series, specials, news, and public affairs; operates online content networks for information and entertainment; produces theatrical films; and digital streaming services. This segment also operates CBS Sports Network, a 24-hour cable program service that provides college sports and related content. The Cable Networks segment offers subscription program services, such as original series, theatrical feature films, documentaries, boxing and other sports-related programming, and special events, as well as a direct-to-consumer digital streaming subscription. This segment also operates Smithsonian Networks, which operates a channel featuring cultural, historical, scientific, and educational programs. The Publishing segment publishes and distributes adult and children's consumer books in printed, digital, and audio formats; develops special imprints and publishes titles based on the products of the company, as well as that of third parties; and distributes products for other publishers. This segment also delivers content; and promotes its products on its Websites, social media, and general Internet sites, as well as those related to individual titles. The Local Media segment owns 29 broadcast television stations; and operates local Websites, including content from its television stations. The company was founded in 1986 and is headquartered in New York, New York.