The Evolving Cigarette chronicles the evolution of tobacco cigarette designs and packaging over the past century. It focuses on four major topics, 1) manufacturing (cigarette automation, American Tobacco monopoly and break-up), 2) engineering (tobacco blending, flavors, and additives), 3) misconceptions of reduced risk (filters, ventilation, hidden features, low tar), and 4) marketing (line extensions, advertising, products that enable smoking).