By the end of the 1990s , '' Sesame Street '' faced societal and economic challenges , including changes in viewing habits of young children , competition from other shows , the development of cable television , and a drop in ratings . After the turn of the 21st century , '' Sesame Street '' made major structural changes . For example , starting in 2002 , its format became more narrative and included ongoing storylines . After its thirtieth anniversary in 1999 , due to the popularity of the Muppet Elmo the show also incorporated a popular segment known as " Elmo 's World " . Upon its fortieth anniversary in 2009 , the show received a Lifetime Achievement Emmy at the 36th Daytime Emmy Awards
36th Daytime Emmy Awards
36th Daytime Emmy Awards
Sesame Street