How ‘Sesame Street’ is still supporting families, 50 years after its debut

November marks the 50th anniversary of public television’s “Sesame Street,” a cultural landmark widely praised for its approach to children’s programming. But beyond the songs and fun, “Sesame Street” does some serious work for those in need, providing special support and guidance for military families and addressing topics like autism and addiction. Hari Sreenivasan reports.