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TIL eigenmannia virescens fish shift their electrical frequencies to avoid interfering with each other and may hold the secret to more efficient wifi networks.

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jNlMR TIL Mark Twain made a substantial amount of money throughout his career but lost most of it. He lost the equivalent of $9,000,000 on a typesetting machine investment, his publishing company failed after selling only 200 copies of one of his books, & he was forced to sell his house in Connecticut.
LQpx9 TIL the Canadian tuxedo refers to a denim double breasted jacket and matching jeans created by Levi's for Bing Crosby. Levi's was inspired in 1951 when Crosby was nearly escorted off a hotel's premises during a hunting trip in Canada because he and his hunting buddies were wearing denim
XENXr TIL that "being on the down-low" was originally a term used by the African-American community to refer to men that identified as heterosexual but secretly had sex with men.
bN1a TIL Albuterol, one of the oldest asthma medicines, typically costs $50 to $100 per inhaler in the United States, but it was less than $15 a decade ago, before it was repatented
0wlV5 TIL with 29-hour work weeks, the Netherlands has the world's shortest week for business professionals. This allows them to dedicate at least one day per week to spend time with their kids. This time off is frequently referred to as "Papadag," which essentially means "Daddy Day."