In 2012, "Elmo's World" was replaced by "Elmo the Musical"; even though it was designed for older viewers, the producers hoped that younger children would still enjoy it. "Elmo's World" segments continued to appear in repeats, DVDs, and on the show's website. In 2017, the 47th season of Sesame Street began airing on the cable subscription service HBO, Elmo's World returned, in a newly designed segment that ran five minutes at the end of each episode. Steve Youngwood, the Sesame Workshop's CEO, called it "fresh, contemporary". Also in 2017, in response to the changing viewing habits of toddlers, the show's producers decreased its length from one hour to thirty minutes, focused on fewer characters, removed the pop culture references "once included as winks for their parents", and focused "on a single backbone topic". See also Educational goals of Sesame Street History of Sesame Street Sesame Street research Notes References Works cited Clash, Kevin and Gary Brozek & Louis Henry Mitchell (2006). My Life as a Furry Red Monster: What Being Elmo Has Taught Me About Life, Love and Laughing Out Loud. New York: Random House. Davis, Michael (2008). Street Gang: The Complete History of Sesame Street. New York: Viking Press. Fisch, Shalom M. and Rosemarie T. Truglio, eds. (2001). "G" Is for Growing: Thirty Years of Research on Children and Sesame Street. Mahweh, New Jersey: Lawrence Erlbaum Publishers. Palmer, Edward and Shalom M. Fisch, "The Beginnings of Sesame Street Research", pp. 3–24. Fisch, Shalom M. and Lewis Bernstein, "Formative Research Revealed: Methodological and Process Issues in Formative Research", pp. 39–60. Gikow, Louise A. (2009). Sesame Street: A Celebration of Forty Years of Life on the Street. New York: Black Dog & Leventhal Publishers. . Gladwell, Malcolm (2000). The Tipping Point: How Little Things Can Make a Big Difference. New York: Little, Brown, and Company. Lesser, Gerald S. (1974). Children and Television: Lessons From Sesame Street. New York: Vintage Books. Morrow, Robert W. (2006). Sesame Street and the Reform of Children's Television. Baltimore, Maryland: Johns Hopkins University Press. O'Dell, Cary (1997). Women Pioneers in Television: Biographies of Fifteen Industry Leaders. Jefferson, NC: McFarland & Company. Sesame Street