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TIL Breathalyzers are extremely inaccurate and overestimate the Blood Alcohol Content about 25% of the time and vary about 15% from actual BAC. People with diabetes, or a fever, or who have used chemicals like oil-based paint will register BAC over the legal limit even if they've had no drinks.

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pYWxO TIL Alpacas Need To Be Shorn Once A Year And It’s Very Satisfying To Watch!
5VR0r TIL the revolution that brought about fall of Communism in Czechoslovakia was triggered by the killing of Martin Šmíd, a student at the University of Prague who was killed during a police raid on a student demonstration on November 17, 1989. Šmíd, however, wasn't real.
k8vd TIL there is an issue called The Punisher Kills The Marvel Universe, where he kills every single Marvel Super-Hero and Villain, including himself.
ANGEo TIL that Brazil has the most native deer species in the Americas. There are eight of them, divided into four genus: White-tailed Deer, Pampas Deer, Marsh Deer, and brockets.
7rxkx TIL of the lost auto-biographical film starring Pancho Villa which incorporated live battle footage from the Mexican Revolution.