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This Day in History

The Royal Air Force Sinks German Battleship Tirpitz (1944)
The German Tirpitz, sister ship of the similarly ill-fated Bismarck, was the largest battleship ever built in Europe. Though she was sent to waters around German-occupied Norway and never really saw action in World War II, her mere presence threatened Allied convoys and tied up their naval resources. The Allies therefore launched numerous attacks on the Tirpitz in an effort to destroy her. What was the final Allied operation called? Discuss

The Great Blue Norther (1911)
The central US is no stranger to sudden changes in weather, but the temperature fluctuations and weather phenomena that struck on November 11, 1911, were about as unusual as it gets. On that day, many cities experienced record high temperatures before the mercury plummeted to record lows. Springfield, Missouri, for example, was a balmy 80°F (27°C) before the cold front passing through the region brought it down to a frigid 13°F (-11°C). What else did the front bring with it?

Mary Anderson Patents the Windshield Wiper (1903)
Today we take for granted the fact that we are able to flip a switch and clear our windshields of precipitation or debris, but this was not always the case. Early drivers were forced to manually clear their windshields of snow, rain, dirt, and the like, that is, until Mary Anderson invented the first effective windshield wiper system. It was not long before windshield wipers were standard equipment on American cars. What inspired Anderson to invent a windshield-clearing device?