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TIL Sleep literally cleans your brain. During slumber, more cerebrospinal fluid flushes through the brain to wash away harmful proteins and toxins that build up during the day.

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yQW1l TIL that "Chunk" from The Goonies is now an entertainment lawyer
OoaAg TIL that in languages where spelling is highly phonetic (e.g. Italian) often lack an equivalent verb for "to spell". To clarify, one will often ask "how is it written?" and the response will be a careful pronunciation of the word, since this is sufficient to spell it.
nLRG TIL of Ken Allen (1971–2000), an orangutan at the San Diego Zoo. Not only did he escape 3 times, his peers began following his example & escaped too. He outwitted zookeepers even when they posed as visitors. During his escapes, Ken would “peacefully stroll around the zoo looking at other animals.”
gMWAX TIL deaths from breast cancer have decreased by 39% from 1989 to 2015 due to improved screening and access to treatment.
8aLRZ TIL U.S Customs seizes an average of $4.3 million in counterfeit products per day.