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TIL that the American Psychiatric Association officially banned its members from commenting on a public figure’s mental health without examining them. The policy is known as the Goldwater rule.

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KDQ6 TIL that Al Capone’s WWI draft card claimed he was a “paper cutter”
vdvx TIL that the human body may be incapable of living beyond 120 years due to genetic coding which may limit the amount of times our cells can divide.
JYjd1 TIL coffee is roasted until it "cracks." First crack (about 385 °F) = light roast, second crack (about 435 °F) = dark roast. If roasted past the second crack, the beans will fully carbonize and may combust.
v1Zwx TIL China was one of the only places in the world that did not release Elvis Presley's music at the time of its initial release. The few Elvis fans who managed to get their hands on his records often saw the material set ablaze by Red Guards and the government denounced his music as pornography
8a1BV TIL of the Great Smog of London. In 1952, several days of intense smog that killed thousands and sickened 100,000.