stations reserve the right to schedule PBS-distributed programming in other time slots or not clear it at all if they choose to do so; few of the service's members carry all its programming. Most PBS stations timeshift some distributed programs. Once PBS accepts a program offered for distribution, PBS, rather than the originating member station, retains exclusive rebroadcasting rights during an agreed period. Suppliers, however, retain the right to sell the program's intellectual property in non-broadcast media such as DVDs, books, and sometimes PBS-licensed merchandise. Programming The evening and primetime schedule on PBS features a diverse array of programming including fine arts (Great Performances); drama (Masterpiece, Downton Abbey, American Family: Journey of Dreams); science (Nova, Nature); history (American Experience, American Masters, History Detectives, Antiques Roadshow); music (Austin City Limits, Soundstage); public affairs (Frontline, PBS NewsHour, Washington Week, Nightly Business Report); independent films and documentaries (P.O.V., Independent Lens); home improvement (This Old House); and interviews (Amanpour & Company, Tavis Smiley, The Dick Cavett Show). In 2012, PBS began organizing much of its prime time programming around a genre-based schedule (for example, drama series encompass the Sunday schedule, while science-related programs are featured on Wednesdays). PBS broadcasts children's programming as part of the service's (and including content supplied by other distributors not programmed by the service, its member stations') morning and afternoon schedule. As the children's programs it distributes are intended to educate as well as entertain its target audience, PBS and its stations have long been in compliance with educational programming guidelines set by the Federal Communications Commission in response to the enactment of the Children's Television Act of 1990. Many member stations have historically also broadcast distance education and other instructional television programs, typically during daytime slots; though with the advent of digital television, which has allowed stations to carry these programs on digital subchannels in lieu of the main PBS feed or exclusively over online, many member stations/networks have replaced distance education content with children's and other programming. Unlike its radio counterpart, National Public Radio, PBS does not have a central program production arm or news division. All of the programming carried by PBS, whether news, documentary or entertainment, is created by (or in most cases produced under contract with) other parties, such as individual member stations. Boston member WGBH-TV is one of the largest producers of educational television programming, including shows like American Experience, Arthur (with Canada-based CINAR),