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TIL Fiddler crabs are asymmetrical, with one claw being much larger than the other. In most species, when the big claw is lost, it regenerates as a small claw while the small one becomes the new big claw.

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Enpo TIL Kim Ung-yong holds the record for the worlds highest IQ at 210. He was able to solve complicated calculus equations easily with no problems by age three.
e0ed6 TIL Dreams are caused by the random firing of neurons in the cerebral cortex during the REM period. The forebrain then creates a story in an attempt to reconcile and make sense of the nonsensical sensory information presented to it.
Lkw0V TIL the White Stripes only has three songs on the Billboards hot 100 chart with Seven Nations Army being the lowest ranking song at 76
b9Jg7 TIL Subotai managed to defeat Poland and Hungary in 2 days by forces over 500 kilometers apart. He directed more than 20 campaigns in which he conquered 32 nations and won 65 pitched battles, during which he conquered more territory than any other commander.
yM6p TIL There’s a shade of blue that doesn’t reproduce on a black and white copy machine or grayscale scan. It’s used extensively in the graphic design industry.