Alexander Fleming By Glo Jan 1, 1875 Disregard the month and day in the dates. Jan 1, 1881 Alexander Fleming is born in Ayrshire, England. Jan 1, 1901 Fleming starts to study medicine at St. Mary's Hospital Medical School. Jan 1, 1914 World War I starts. Jan 1, 1921 Fleming discovers lysozyme, and enzyme that dissolves some bacteria. Jan 1, 1928 Fleming discovers bacteria that would be developed into penicillin, the world's first anti-biotic. Jan 1, 1929 The Great Depression begins. Jan 1, 1939 World War II starts. Jan 1, 1945 Fleming was co-awarded the Nobel Prize in Physiology or Medicine. Jan 1, 1945 The United States dropped atom bombs on the Japanese cities of Hiroshima and Nagasaki. Jan 1, 1955 Alexander Fleming dies of a heart attack.