Like our planet, young people across the globe are heating up. As they come of age, some are boiling with outrage about the environmental toxins, unconscionable injustices, and social challenges they face. Some are setting their communities ablaze with gang warfare, bullying, hazing, or other destructive acts of violence. Others are barely flickering, having dimmed their light through self-destructive behaviors, lost in addictions or a variety of numbing habits that sublimate their life force. Many youth are simply invisible, lacking the encouragement of adults, disregarded or discarded with...