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TIL even though the half-life of LSD is only about 30 minutes, its hallucinogenic effects can last up to 18 hours because the molecule gets stuck at an angle within the brain's serotonin receptor and cannot dislodge itself.

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v16WK TIL in 2015 Starbucks tried to encourage more customers to bring their own cups but instead fewer did
gMPQW TIL of La Mancha Negra, a black substance that has oozed from roads in Caracas, Venezuela since 1986 causing multiple car accidents and claiming thousands of lives. After years of study and millions of dollars spent to identify it, there is no definitive explanation.
bg8j TIL the top 5 richest men all earned their money while the top 5 richest women inherited it (in US)
VBLJB TIL George C. Scott called the Oscars "a two-hour meat parade, a public display with contrived suspense for economic reasons," and sent a telegram to the Academy telling them that he'd be refusing the award, and didn't even want his name on the ballot.
loPAa TIL 139 diners were offered an all-you-can-eat buffet at an upscale restaurant for either $4 or $8. They ate exactly the same food and the same amount, but those who paid $8 rated their meal an average of 11 % higher. The $4 diners were more likely to feel guilty and that they'd overeaten.