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TIL that when chimpanzees were given opportunity to watch TV, their favorite was the Playboy Channel

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wojYJ TIL that ELVES are a rare type of red lightning that involves red flashes with a radius of 350 km (220 mi) which only last for 0.001 second. They form when an electromagnetic pulse shoots upward and causes the nitrogen molecules to glow scarlet.
P1aOV TIL shrimp farmers deliberately blind female shrimp, to stimulate egg production
awAEA TIL: Isaac Newton set out the colors of the rainbow we memorize today. However, he originally didn't include orange or indigo. He only added them later because of his occult belief that there must be 7 separate colors, just like there are 7 notes in a musical scale and 7 days of the week.
p8Vw4 TIL difficulty remembering things is one common symptom of sleep deprivation. Since the brain does not have sufficient time to create new pathways for the information you’ve recently learned, sleep deprivation often affects how memories are consolidated.
oB578 TIL of the Mountain Meadows Massacre, when the Mormons killed 120-140 people of a wagon train passing through Utah