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TIL Death Valley (California) is above one of the largest aquifers in the world

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4RB5 TIL that in 2004 the company Alcoa had to officially declare the proposed site for its new aluminum smelting plant in Iceland “elf-free” before it could begin construction.
7r8ZX In this week’s Today I Learned, National Geographic Emerging Explorer Thandiwe Mweetwa explains how female lions synchronize their reproductive cycles so they have cubs around the same time.
Oodee TIL about the Chinese massacre of 1871 when a mob of around 500 White and Hispanic persons entered Old Chinatown in Los Angels and attacked, bullied, robbed, and murdered Chinese residents in cold blood.
ne0nW TIL there's seven species of dinosaur that have a 'live' appearance in the film Jurassic Park, but only two, the Brachiosaurus and Dilophosaurus were actually from the Jurassic period. The other five: Gallimimus, Parasaurolophus, Triceratops, T-Rex, and Velociraptor were all from the Cretaceous.
wAno TIL that Dr. Donald Unger won an Ig Nobel Award in medicine after systematically cracking the knuckles on his left hand and not his right hand for 60 years, demonstrating that knuckle cracking does not cause arthritis.