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TIL in a 1966 study, a group of engineers, mathematicians, artists, and architects were administered 50 micrograms of LSD and 100 milligrams of mescaline over a period of time. They then discovered solutions to professional problems that were previously unsolvable for them for 3 months

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Yp1Zd TIL of Baron Dominique-Jean Larrey, a military surgeon for Napoleon. He pioneered the first field ambulance that rushed into combat to carry both friend and foe to be medically treated. He was a humanitarian who believed in treating enemy soldiers with dignity and compassion.
4kEr6 TIL: The pre-game military fly-overs conducted while the Star Spangled Banner plays at pro sports events is actually a planned training run for flight teams and doesn't cost "extra" as many speculate, but is already factored into the annual training budget.
Zp7lR TIL that the female moorland hawker dragonfly sometimes plays dead to avoid mating. Unlike some females of some other species of dragonfly, they aren’t guarded by male mates. A single sexual encounter is enough to fertilize all their eggs, and copulating again could damage their reproductive tracts.
MylA TIL in the “Rumble in the Jungle” fight, Muhammad Ali allowed George Foreman to fruitlessly strike him in the arms and torso for 8 rounds without fighting back to tire him out, then punched Foreman ten times in a row to knock him out.
rLK0 TIL that Mark Zuckerberg, named the number 1 philanthropist by Philanthropy magazine, donated $992.2 million to Planned Parenthood in 2013, equal to roughly 18 million shares of Facebook.