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TIL why noses run when it's cold out. Lungs are irritated by cold and dry air, so the nose gets more blood to keep it warm, and secretes more liquid to increase the humidity of the air you breathe in.

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j6X1E TIL Santa Claus slapped Arius the Heretic, saved girls from becoming prostitutes, and resurrected 3 "pickled children"
GYdnJ TIL The human brain weighs 3 pounds. It comprises 60% of fat and is one of the fattest organs in the human body. Human brain has the capacity to generate approximately 23 watts of power when awake. Of the total blood and oxygen that is produced in our body, the brain gets 20% of it.
R7apl TIL of the Dazexiang uprising. In Qin China, 2 generals were late for a battle. Given that the penalty for being late for a government job was death, they decided to take their soldiers and start a rebellion to fight for their freedom, as the punishment for rebellion was also death.
mxe4y TIL of underground cock-fighting arenas in Miami, Fl. Rings included small boxes with glass windows that dramatically lowered the competing cocks into the arena at the start of fights. A cock-fighting referee was even murdered at one, a pouch of ref equipment hanging from his neck.
jNkBN TIL about the Christmas pickle. A supposedly German tradition, where you hide a pickle in the Christmas tree and whoever finds it first gets a reward. Apparently this is a well known tradition in the US, but not of German origin and in fact completely unknown in Germany.