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TIL Robin Williams was instrumental in the early success of Audible as an investor and creator of the first weekly program

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45oX TIL the ancient Babylonians worked out that there are solar eclipses that occur 18 years, 11 days, and 8 hours apart. This period, 223 lunar cycles, is called the Saros cycle. The 1999 eclipse and this year’s eclipse are Saros cycle solar eclipses.
ykOv TIL a gin & tonic will glow under a black light because tonic contains quinines , which are black light reactive.
gMo8D TIL the "Jesus Nut", sometime referred to as the "Jesus Pin", is the only component holding the rotors to some helicopters' body. If it were to fail during operation, the rotors would completely separate from the body, causing a rapid unplanned decent.
xLDD TIL that ‘Django Unchained’ was the first movie featuring Leonardo DiCaprio in 16 years in which he didn’t get the top billing
R7E54 TIL of Eleanor Jones, a librarian, who in 1916 created a chaperoned dormitory after noticing groups of vulnerable young women in search of Hollywood stardom were congregating in her library with no place to go. The Hollywood Studio Club eventually housed over 10,000 women - including Marilyn Monroe.