When you watch Cookie Monster on Sesame Street merrily devouring cookie after cookie, it looks utterly irresistible. That mess of crumbs, that grab of sweet dough, it all feels like pure childhood joy ...

Something must be wrong in the land of Muppets. First PBS announced that “Sesame Street” would kick off its 35th season this week with a multiyear story arc about healthy habits. No problem there; ...