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TIL John Stith Pemberton was a Confederate officer who became addicted to morphine after receiving a saber wound. Pemberton made a series of concoctions attempting to cure his addiction. Pemberton's experiments with coca and kola resulted in Pemberton's French Wine Coca and later Coca-Cola.

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wLEpY TIL President William McKinley wore a red carnation in his lapel at all times as a good luck charm. During a public meeting in his second term, he took out the flower from his lapel and gave it to a 12-year-old girl. Minutes later, he was shot. He died a week later.
nWm0d TIL - Proton-enhanced nuclear induction spectroscopy (PENIS), also sometimes called Cross Polarisation (CP), is a nuclear magnetic resonance technique invented by Michael Gibby and Alexander Pines while they were graduate students
b6VE TIL that our eyes adjust to light or dark areas by either breaking down or combining ingredients of a chemical in our eyes.
awLZ TIL an Australian journalist was kidnapped by Iraqi insurgents, but was released 24 hours later after the Iraqi insurgents used Google to verify that he’s journalist.
rR9g1 TIL that the ''I am Iron Man'' line from the first Iron Man movie is actually improvised. Downey Jr. blurted out the revelation to the surprise of Feige, who became excited by the choice and approved leaving it in before the cut to the end credits.