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TIL that Thomas Jefferson (yes, that one) invented American mac ‘n cheese.

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vanj TIL Contrary to popular belief, Einstein never failed math. In fact, by fifteen he had already mastered differential and integral calculus.
E1850 TIL Of Alfred Kroeber who studied a man he named Ishi, the last member of the Yahi tribe who walked into the modern world in 1911. In Ishi's culture, knowing ones name gives you power over them, so Ishi just means Man. This idea of magic in naming things influenced Kroeber's daughter Ursula Le Guin.
7bkp TIL that 3 years after illegally joining the Marines at the age of 14, Jacklyn Lucas snuck onto a ship bound for Iwo Jima, stormed the beach without a rifle, and threw himself on top of two grenades to protect his team. He survived, and earned the Medal of Honor at the age of 17.
gvmX TIL that next year, the movie industry will stop producing physical film reels, but most drive ins are still not digital and the cost to upgrade is prohibitive. Honda is trying to save some theathers by donating digital projectors and taking votes on where they will go.
ADWQn TIL a 4-month-old Cinnamon bear provided much of the voice of Chewbacca. Other Chewbacca noises were voiced by three other bears, a badger, a lion, a seal, and a walrus from Long Beach.