CBS Corporation operates as a mass media company in the United States and internationally. It operates in five segments: Entertainment, Cable Networks, Publishing, Local Broadcasting, and Outdoor Americas. The Entertainment segment distributes a schedule of news and public affairs broadcasts, and sports and entertainment programming; produces, acquires, and distributes programming, including comedy and drama series, reality-based programming, specials, children's programs, daytime dramas, game shows, and late-night programs; produces and distributes theatrical motion pictures; and operates online content networks for information and entertainment. The Cable Networks segment owns and operates multiplexed channels that offer subscription program services, including theatrical feature films, original series, documentaries, boxing and other sports-related programming, and special events; and CBS Sports Network, a 24-hour cable program service that provides college sports and related content. This segment also owns and manages 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. The Local Broadcasting segment owns 30 broadcast television stations; owns and operates 127 radio stations in 28 U.S. markets and related online properties; operates local Websites in various U.S. markets, which combine the company's television and radio local media brands online to provide the latest news, traffic, weather, and sports information, as well as local discounts, directories, and reviews. The Outdoor Americas segment provides advertising space on billboards, transit shelters and benches, buses, rail systems, mall kiosks, stadium signage, and in retail stores. CBS Corporation was founded in 1986 and is headquartered in New York, New York.