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TIL that life expectancy in the 1900 was 31–32 (world average)

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v1bNx TIL about referred itch, the phenomenon in which a stimulus applied in one region of the body is felt as an itch or irritation in a different part of the body. That’s why by plucking a hair in your arm you may feel an itch on your back.
0dpgA TIL the Army of the United States is not the same as the US Army. The Army of the US is one of four components, also including the Regular Army, the Army Reserve and the National Guard. If you're drafted you go into the Army of the US, but it's been dormant since 1973.
X0E48 TIL 250 people in the US have cryogenically preserved their bodies to be revived later.
e0D0k TIL After Col. Shaw died in battle, Confederates buried him in a mass grave as an insult for leading black soldiers. Union troops tried to recover his body, but his father sent a letter saying "We would not have his body removed from where it lies surrounded by his brave and devoted soldiers."
woZP7 TIL that the Niesen Stairway (service stairway for Niesenbahn funicular) is the longest staircase in the world with 11,674 steps. It is located on Mt. Niesen in the Bernese Oberland region of the Swiss Alps.