Today in History: Sept. 28, Alexander Fleming discovers penicillin
By The Associated Press Today is Saturday, Sept. 28, the 272nd day of 2024. There are 94 days left in the year. Today in history: On Sept. 28, 1928, Scottish medical researcher Alexander Fleming discovered penicillin, the first effective antibiotic. Also on this date: In 1781, American forces in the Revolutionary War, backed by a French fleet, began their successful siege of Yorktown, Virginia. In 1924, three U.S. Army planes landed in Seattle, having completed the first round-the-world trip by air in 175 days. In 1941, Ted Williams became the most recent American League ...