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TIL the UK experiences more tornados per year than any other country in the world relative to its land area.

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4Mjo TIL that Goodyear developed a small inflatable airplane called the “Inflatoplane” with funding from the United States Army in 1956. The project was scrapped because it could not find a “valid military use for an aircraft that could be brought down by a well-aimed bow and arrow.”
EKbp TIL The United States tried to buy Greenland for $100,000,000, but Denmark refused to sell.
ZeWo TIL a husband mercy shoots his wife (who was on life support because her initial suicide attempt was interrupted) then commits suicide next to her in the hospital so that their organs could be harvested to save other people.
P1JEJ TIL about buzz pollination, or sonication—a technique in which certain bees use vibrations to remove and collect pollen from flowers.
b91nZ TIL that the first internal combustion engine was designed in 1661, and would use gunpowder to drive the pistons!