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TIL that the Japanese created Nightingale floors that “chirped” when walked on for security.

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X0eOr TIL of the 1920 Wall Street bombing which killed 40 people and was never solved and was the deadliest terrorist attack in US then. Although investigators and historians believe it was carried out by Galleanists (Italian anarchists), a group responsible for a series of bombings the previous year.
Yp0Nx TIL George Foreman was originally paid 40% of the profits for endorsing the George Foreman Grill. At the peak of the grill’s sales, he was making 4.5 million dollars a month.
QkJM TIL that Sacha Baron Cohen is lined up to play Freddie Mercury in a movie about his life. I am elated. (1:28 long video)
KYDa TIL that scientists aren’t really sure why we require sleep. According to one researcher with 50 years of experience in the field, “As far as I know, the only reason we need to sleep that is really, really solid is because we get sleepy.”
wop8W TIL that if you have bell clapper deformity, your testicles hang in your scrotum and swing freely, like a clapper in a bell. This free-swinging can lead to testicular torsion, a painful condition in which your testicle twists and loses its blood supply, requiring emergency care.