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TIL that all fourth graders in the US have free admission to national parks

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Y7mwG TIL about "The Two-Hour Rule" something the old Hollywood studios put in thier actor's contract stating they had to be within a two-hour drive of Los Angeles during production. This rule put Palm Springs on the map as a popular getaway to the stars.
Qok6 TIL In 1916 an Arctic cold front slammed through Browning, Montana, dropping the temperature from 44°F to -56°F in 24 hours. The most dramatic 24-hour drop in temperature ever recorded in the US.
a8MKN TIL the song "All Along the Watchtower" which is Jimi Hendrix's highest ranking single on the Billboard Hot 100 was written by Bob Dylan. Hendrix's version was released only 6 months after Dylan's version and Dylan's version was a top 20 single in 1968 as well.
ADRMl TIL Eleven and Twelve do not follow the teen pattern because they come from Old English terms that mean "one left after ten" and "two left after ten," or "ain-lif" and "twa-lif," due to the fact that these numbers were used commonly, unlike the other teens, and therefore developed much earlier.
R7vQ7 TIL: The term "Mad as a Hatter" was originated back in the early 1800s in Denton, Tameside (which is in northern England), where hat makers used mercury in their hat making process. The mercury in the hats would cause dementia in wearers due to the mercury leaking into the body.