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TIL that approximately 7% of our weight is our blood

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via reddit.com

4kEvg TIL about the first shoot down of a stealth fighter. The pilot and leader of the SAM site that shot him down are now friends.
QJlXd TIL in 1946, a black WWII veteran was taking a bus home in uniform, and asked the driver to stop for a bathroom break. The driver called the police, and the local chief of police arrested the man, beat him, and gouged out his eyes with a nightstick. The officer was acquitted by an all-white jury.
woNw1 TIL Stephen Hawking joked that he couldn’t escape fame even with a disguise. “It is not enough for me to wear dark sunglasses and a wig. The wheelchair gives me away.” He added that people constantly wanted photos with him, which was a nuisance when he was in a hurry.
m89M TIL that the A5 Processor for Apple’s iPhone and iPad is actually manufactured by Samsung.
VaaZ TIL 10 years later, Twitter still isn’t close to making money