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TIL the average urinary flow rate for women over 66 years old is twice the rate of men the same age. (18mL/sec. vs. 9mL/sec.)

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yy18 TIL that Nazi eugenics programs had their start in the United States, with research funded by wealthy industrial leaders. A 1912 Carnegie Institute report even recommended the use of gas chambers as a solution to the problem of cleansing society of the poor, non-white, and mentally ill.
M7Nk8 TIL Abraham Lincoln and Elvis Presley were related, 3rd cousins 5 times removed. They are part of the Harrison family line, a family with medieval roots who produced a US founding father and two other US presidents besides Lincoln
yVoae TIL The Australian Parliament can't legally operate without a ceremonial mace, representing the monarch's authority, being present. In 1914 a member of parliament hid the mace and it was not found for two hours, and police were called in as it was assumed to have been stolen.
KYr7a TIL while viewing a solar eclipse on 18 August 1868, French astronomer Pierre Janssen made an observation that led to the discovery of helium. It was the first time a chemical element was discovered on an extraterrestrial body before being found on the earth.
p8noA TIL The fastest Cheetah ever recorded was named Sarah. In 2012, then-11-year-old Sarah was filmed running on a U.S.A. Track and Field-certified course at an unmatched pace of 61 miles per hour. Sarah’s 5.95 second 100-meter dash holds the known planet-wide record.