Andra Chastain gave an invited talk in Spanish, via Zoom, for an environmental studies course at the National Autonomous University of Mexico (UNAM). The title of the talk was “Infraestructura desigual: La construcción del Metro de Santiago en democracia y dictadura.” The course, taught by Dra. Natalia Verónica Soto Coloballes, was “Social and Historical Aspects of the Environmental Problem.”