A global public health emergency driven by the swift transition from a play-based to a phone-based childhood has created a “global destruction of human flourishing” among young people, according to social psychologist John Haidt. The Thomas Cooley Professor of Ethical Leadership at NYU Stern School, speaking at a recent Dartmouth-United Nations Development Programme symposium on youth wellbeing, argued that children born after 1995—Gen Z—are fundamentally different from earlier generations because they experienced puberty amid omnipresent smartphones and social media.