What Happened On This Day – April 25

  • 1953 The double helix structure of DNA described for the first time

    Francis Crick and James D. Watson published their groundbreaking findings of the molecule containing genetic information was in Nature that day.

  • 2011 The largest tornado outbreak ever recorded hits the U.S.

    348 people in six states were killed during the outbreak, which encompassed a total of 358 confirmed tornadoes.

  • 1983 The German news magazine, Stern, announces the discovery of Hitler’s diaries

    The documents were later exposed as forgeries, triggering one of the most spectacular media scandals in history. Experts believe that Hitler never kept a diary.

  • 1974 In Portugal, the fascist Estado Novo is overthrown in a bloodless coup

    The leftist Carnation Revolution was led by military officers and supported by widespread civil resistance.

  • 1859 Construction of the Suez Canal begins

    The waterway connecting the Mediterranean Sea and the Red Sea became the shortest sea link between Europe and Asia.

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