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TIL antivenom is made by injecting small amounts of venom into farm animals until they produce antibodies which are then extracted via drawing the animal’s blood.

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ne977 TIL The supreme court concluded that US citizens have the right to refuse presidential pardons. George Wilson fought a presidential pardon and won a hanging.
M4wb TIL The “Don’t tase me, bro” kid TRADEMARKED “don’t tase me, bro.”
QNK49 TIL about sesquizygotic twins, which are neither identical nor fraternal, but a rare middle ground with a split egg and two separate sperm.
DA7Y TIL During WWII, Tootsie Rolls were added to soldiers’ rations thanks to their durability in all weather conditions.
7rQeM TIL Mr. Rogers did an episode on Santa Claus and told kids the truth because he didn't like the idea that there was somebody who snuck into your house in the middle of the night. He received a lot of angry letters from parents.