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TIL that perhaps counterintuitively, defibrillators do not shock the heart to get it to beat normally- the shock actually stops the heart from beating altogether. This allows the natural automatic pacemaker of the heart to operate again and restore the heart's rhythm back to normal.

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oRZxA TIL In an alcohol-induced blackout the subject is temporarily unable to form new long-term memories while relatively maintaining other skills such as talking or even driving.
rNB84 TIL that the reason we have blue raspberry flavor is because red dye no. 2 (the one traditionally used for raspberry) was considered harmful. The flavor was popularized by ICEE.
6N5Z TIL the girl who sings “All I Want for Christmas” in Love Actually is the voice behind Marceline the Vampire Queen in Adventure Time, and Vanessa in Phineas & Ferb (Olivia Olson)
kJG1d TIL a French occultist built a device to test the hypothesis that snails create a permanent telepathic link when they mate.
v14XK TIL that Avatar The Last Airbender’s episode, “Lake Laogai” was inspired by China’s “Laogai System” in the 1950s. The Communist Party detained those deemed disruptive to political stability to transform them to conform to socialist ideals through forced labor and political indoctrination.