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TIL Karey Mullis - the scientist who developed PCR (the technique used to detect viruses like HIV) did not believe HIV existed. He also came up with tbe idea of PCR - which garnered him the nobel prize - by conversing with a glowing alien racoon.

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via reddit.com

pjP4 TIL that Tito, tired of Stalin’s attempts to assassinate him, openly wrote: “Stop sending people to kill me. We’ve already captured five of them, one of them with a bomb and another with a rifle. (…) If you don’t stop sending killers, I’ll send one to Moscow, and I won’t have to send a second.”
7r0yZ TIL lightning can appear high above thunderstorms near the edge of space. Called "Sprites", the red lightning can be dozens of miles wide and is often shaped like jellyfish.
JW8B TIL the only tree in a 250 miles radius of the Saharian Desert was crashed into …twice
GAgRG TIL in 2016, a thunderstorm in Norway instantly killed over 300 reindeer
EZ4d TIL That the B-52 bomber (started serving in 1952) won’t be retired until the 2040s. By then, it’ll have been in continuous service for almost a century.