In this installment of the "Origin of Everything" series titled "What Can We Learn From America's Last Epidemic?", the video delves into the historical and ongoing societal impacts of the HIV/AIDS epidemic in the United States. It examines the evolution of medical treatments over time and the disparities in access due to economic and social inequalities. Key terms discussed include retroviruses, immune cells, and epidemiology. The video draws parallels between the past HIV/AIDS crisis and contemporary challenges posed by the COVID-19 pandemic. It highlights public health efforts and the importance of community action and policy changes in dealing with widespread health crises. The video's educational merit lies in its ability to connect health and historical topics to present-day contexts, enhancing understanding of ongoing public health issues.