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TIL about Wu Lien-Teh, “The Plague Fighter,” a doctor who developed thicker, more substantial masks to be used against the pneumonic plague in Manchuria during 1910-1911. Dr. Wu identified the bacteria as airborne, and successfully contained the plague; the epidemic ended after 7 months.

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DvLp TIL that Xerox has a program it calls Social Service Leave, that allows employees to take up to a year off to work for a nonprofit organization while earning their full salary and benefits, including job security.
8e0RK TIL about Herman Davis, a World War I soldier renowned for his extraordinary marksmanship. With just his Springfield rifle and open sights, he took out five enemy soldiers from 1,000 yards away. He humbly described it as “just a good shootin' distance.”
xLB7 TIL that Native Americans use to manipulate young trees to offer direction to important battlefields, graves and other significant landmarks. After hundreds of years you can still find many of them today.
aQro TIL that in 1965, NASA tested out the effects of being in a vacuum on dogs which resulted in “simultaneous defecation, projectile vomiting and urination. They suffered massive seizures. Their tongues were often coated in ice and the dogs swelled to resemble an inflated goatskin bag”
ne78B TIL that a Harvard study followed men for 75 years, including a subject named Godfrey Minot Camille. He began the study with the lowest rating for future stability of all the subjects and he had previously attempted suicide. But at the end of his life, he was one of the happiest of all.