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TIL National Dollar Day on August 8th commemorates the day Congress established the U.S. monetary system in 1786. In 1862, the United States printed its first dollar bill. It wasn’t George Washington face, The first dollar bill featured Salmon P. Chase, President Lincoln’s Secretary of Treasury.

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4X5xX TIL that a 70-year-old WW2 veteran stole a Soviet T-34-85 tank during a protest in Hungary, and drove it toward riot police to stop them from shooting rubber bullets into the crowd. He was later arrested, but released without charges. [video]
owyW TIL three words in English use ‘w’ as a vowel: cwm, a hollow in a mountain; crwth, an instrument similar to a violin; and cwtch, a hiding place.
nevW7 TIL exponential, log and trig functions are examples of transcendental functions, which "transcend" algebra as they can't be expressed with a sequence of the algebraic operations of addition, multiplication and root extraction. Unlike algebraic functions, they can't satisfy polynomial equations.
7rkar TIL that "sleepunders" are a thing. Kids arrive already in pajamas and do sleepover activities, but everyone leaves before bedtime.
e0pxg The ocean produces at least 50 percent of the Earth’s oxygen, and strangely enough, whale poop is the fuel that helps keep our oceans alive. In this episode of Today I Learned, Asha de Vos tell us why we should all say thanks to whales and their poop.