When social psychologist and professor Jonathan Haidt’s The Anxious Generation hit shelves last year, it became an instant bestseller and a call-to-action for parents, educators, and policymakers grappling with the mental health crisis among kids growing up in the age of smartphones and social media. To date, more than half of U.S. states have passed laws banning or restricting phone use in school. Australian officials announced a social media ban for those younger than 16 going into effect this year, while the European Union has been considering similar measures. What Haidt laid out in The Anxious Generation has become part of a larger movement to protect the mental health of children, especially with new threats on the horizon. Hear from Haidt on what you need to know.