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TIL that a tesla coil was the first device ever made to wirelessly transmit power. Nichola tesla had dreams of putting them all over the world, before realizing they were to inefficient and trying to sell them as death rays to the soviet union

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yQP9M TIL About John Cromwell, an American WWII submarine commander who chose to go down with his submarine rather than be captured by the Japanese, fearing he wouldn’t be able to withhold secrets under interrogation
PYDxe TIL that you have about a 1/2000 chance of contracting fatal cancer from any one CT scan.
kOVbm TIL the Native American greeting of "How" in many Westerns was a real greeting used by speakers of Lakota-Sioux. The word was used only between men.
4kLOb TIL cocaine users caused McDonald's to take away their coffee spoons
LQvNr TIL cotton candy was invented by a dentist in Tennessee. He called it "Fairy floss" and sold it at the St. Louis World's Fair.