The video "Origin of Everything: Why Do We Eat Popcorn at The Movies?" from the "Origin of Everything" series explores the historical and economic factors that have made popcorn synonymous with movie watching. It begins by tracing the early domestication of popcorn by indigenous South American populations and its journey to the U.S., gaining popularity in the 19th century. The video delves into how popcorn and movie theaters became linked, highlighting the significance of the Great Depression and the rise of 'talkies,' which expanded theater audiences. Popcorn's affordability and convenience cemented its status in cinemas. The video also cites Andrew Smith's book, "Popped Culture: A Social History of Popcorn in America," and touches on federal subsidies and the Popcorn Board's role in popcorn's ongoing prominence. This educational content enriches knowledge of U.S. cultural history and economics through popcorn's narrative.