This short educational documentary, produced by HHMI BioInteractive, explores how the aftermath of Mozambique’s civil war led to the rise of tusklessness in African elephants due to poaching pressure. Scientists in Gorongosa National Park uncover the evolutionary and genetic drivers behind this phenomenon, showing how natural selection—accelerated by human activity—favors tuskless females. The film serves as a real-world case study of genetics, inheritance, and evolutionary biology in action.