It would be lovely if all children could be shielded from adult problems, but that is sadly not the case. Sesame Street has never pretended it was, and since the show's inception it has discussed big problems in ways that even very little kids can understand. Now it is trying to help the 1 in 8 children who have at least one parent with a substance use disorder.

Karli is a green and yellow 6-year-old Muppet who has been in the foster care system because her mother has an addiction. Now that her mother is home, she's talking to Elmo and other Sesame Street regulars about this "grown-up problem."