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TIL Teflon’s first use was in the Manhattan project.

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JlA1 TIL that, to stop the theft of trees in public parks near Christmas time, some cities spray would-be Christmas trees with fox urine. It freezes and is odorless outdoors, but would be unbearable and irremovable if taken into someone’s home.
BgwPD TIL the Grilled Cheese sandwich was originally an open-faced sandwich called the "Cheese Dream" which became popular in the U.S. during the Great Depression
4krxN TIL Tug of war was featured at the Summer Olympics 1900 to 1920.
b6k14 TIL: 1963 San Diego Chargers were required to take anabolic steroids 3x per day during training camp. They led the league in nearly every offensive and defensive category and won the AFL championship 51-10.
9Y1jX TIL In 1739, Benjamin Franklin was pivotal in the commencement of American paper currency and anti-counterfeit measures. He even went as far as intentionally misspelling words and using leaf imprints to fool counterfeiters.