This 13-minute video introduces students to the origins of the public debate on population policy. It includes recent interviews with the activists and experts who first raised awareness in the 1970s with dire predictions of catastrophe unless extreme measures were taken to curb population growth. In clarifying why some of these predictions didn’t come true, the video shows students how the Green Revolution expanded “carrying capacity,” and how some countries have adopted policies to manage population growth. A concise and vivid contextualization of policy debates on population, the video is useful as an introduction to a sequence of lessons on population growth and demographic transition, or as a way of teeing up discussion or debate at the end of the unit.