Rates of depression and anxiety among adolescents shot up around the same time kids were switching from flip phones to smartphones. And as teens were moving more of their social lives online, loneliness and friendlessness surged as well. Jonathan Haidt joins John Avlon to discuss how to restore a play-based childhood—including his prescriptions for parents, schools, and members of Congress.

Haidt's book, "The Anxious Generation: How the Great Rewiring of Childhood Is Causing an Epidemic of Mental Illness"

More info on Haidt's "Let Grow" play club

Time article John referenced about uniting America