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TIL of the “second brain” in humans located in the gastrointestinal tract and called the enteric nervous system. More than 90% of the body’s serotonin lies in the gut, as well as about 50% of the body’s dopamine.

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Oyj4 TIL the Aral Sea has shrunk 80-90% since the 60s, it was formerly one of the four largest lakes in the world.
gMAXD TIL that the most successful female sniper in history, Lyudmila Pavlichenko, couldn't pull the trigger on her first kill, until she saw a German shooting a young Russian soldier. She went on to record 309 confirmed kills in WWII.
lpE1 TIL that North Korea wanted to be paid in wheat in exchange for allowing a 7'8.5" tall player to play in the NBA.
8al44 TIL up to 30% of the traffic in cities is just people driving around looking for a place to park.
wLDeJ TIL that, despite being one of the world's biggest bands ever, U2 has only had two number one hits on the Billboard Top 100: "With or Without You" and "I Still Haven't Found What I'm Looking For," both of which come from their 1987 album The Joshua Tree.