Nikola Tesla tried to explain how the phenomenon of ball lightning works.
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After a four-month journey, the Venera 14 spacecraft landed on Venus.
The battle of the Ruhr campaign began during WWII with an air raid in Essen, Germany.
The Boston Massacre occurred.
Pope Francis made history when he became the first pope to visit Iraq.
The world's favorite paper joiner, the stapler was patented by C. H. Gould in England.
