Richard Skolnik, lecturer for Yale's Essentials of Global Health course, focuses this session on the health of adolescents worldwide. He covers the leading causes of death and illness among young people, including road traffic injuries, mental health conditions, substance use, and reproductive health risks, and explains why adolescence is a distinct life stage requiring its own public health strategies. Skolnik ties adolescent health to broader themes in the course, such as nutrition and health systems, and discusses how poverty, education, and access to services shape outcomes for teenagers in low and middle income countries. The lecture is part of a module that also addresses maternal and child health, humanitarian emergencies, and immunization. Delivered in a plain classroom lecture style with slides, it gives a concise overview aimed at students new to global health rather than specialists.