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407

TIL that George Washington had two stepchildren but no biological children

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VgdQ TIL Hunter S. Thompson and Richard Nixon had a conversation about football for over an hour in Nixon’s car, after which Thompson almost accidentally blew up Nixon’s plane with a cigarette
9KK6 TIL Most alarms and sirens fall into the frequency range 1-3 kHz where the human hearing is the most sensitive, but this frequency range is also a black spot in our sound location abilities.
MX6B TIL that the fibonacci sequence can be used to roughly convert between miles and kilometers. If the nth term is a number of miles, the nth+1 term is roughly how many kilometers it is.
9YJ06 TIL Penn Jillette has a patent for "the "Jill-Jet", a hot-tub jet specially angled for allowing a woman to masturbate against the water stream."
plYZ TIL of Lagrange Points 4,5: special spots in space in which any object placed there will remain locked there forever