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TIL the FDA requires sunscreen to remain as effective for three years after it's manufacture

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0dpY5 TIL that before the world's first nuclear explosion, the chance that the earth would be vaporized by the explosion was estimated at "slightly less than 3 in 1,000,000".
XEYNr TIL Charlie Chaplin got the inspiration for the classic Modern Times after a conversation with Mahatma Gandhi on modern technology.
4EEN TIL that human intelligence is a form of sexual ornamentation, like a Peacock’s feathers or a Deer’s antlers
7r9Gr TIL that although penalties are unenforced it is against federal law to use the United States flag for advertising purposes in any manner whatsoever.
ODWa TIL George Washington Custis Lee, the son of Confederate general Robert E. Lee successfully sued the government for its confiscation of Arlington and was paid 150,000 dollars. His lawyer was Robert Todd Lincoln the only surviving child of Abraham Lincoln.