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TIL the buzzers on "Jeopardy!" will lock contestants out for .25 seconds if they ring in before the host has finished the last syllable of the question.

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R7xgQ TIL there was a black samurai named Yasuke. He was owned by a Jesuit missionary who gave him to the Daimyo, Oda Nobunaga. Nobunaga took an interest in him and made him a samurai, teaching him Japanese and giving him a home and a katana.
wLj7M TIL One April day in 1930, the BBC reported, "There is no news." Instead they played piano music.
XjnP TIL the first time the word “astronaut” was used to refer to a human traveling in space was in Neil R. Jones’s short story “The Death’s Head Meteor,” in 1930
OoOl4 TIL microwave ovens DON’T heat food using the “resonant frequency” of water. They work by causing polar molecules (water is one, and so are some fats) to rotate back and forth quickly in an oscillating electromagnetic field, producing molecular vibrations (heat).
W7Ng9 TIL There are different rates of suicides and suicidal behavior between males and females. While females more often have suicidal thoughts, males die by suicide more frequently. In the Western world, males die by suicide three to four times more often than do females.