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TIL that Queen Elizabeth II was a truck mechanic in the army

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GAJw7 TIL that birds control the shape of their wings during flight using hook-shaped microstructures in their feathers to prevent them spreading too far apart. The detachment of the hooks is noisy, so they are missing from silent fliers such as barn owls.
KlQB TIL despite his notoriously foul mouth, Eminem doesn’t say the “n-word.” He hasn’t used the slur in a rap song since two decades ago (when he was nearly unknown).
VG8G TIL that due to a long controversy beginning around 2005, the Church of Scientology has been banned from editing any Wikipedia article relating to the group.
LQgA0 TIL of Captain Thomas Cochrane, who became captain of a post-ship a mere 7 years after his commission as a midshipman. He later was depicted in the naval fiction series of fame, Horatio Hornblower as a pivotal character.
b9o44 TIL That sleep washes away the toxins in your brain. This is why lack of sleep gives you a headache and can eventually kill you.