United States Surgeon General Luther Terry knew his report was a bombshell and intentionally released it on #ThisDayInHistory in 1964, a Saturday, to limit the immediate effects on the stock market. It was on this day that a definitive link between smoking and cancer was announced. The link had long been suspected and the first medical studies that raised serious concerns were published in the late 1940s. To learn more, visit https://www.history.com/this-day-in-history/surgeon-general-announces-