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TIL Polaroid photos should not be shaken
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edition.cnn.com
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reddit.com
gEQA
TIL of Starfish. A 60’s US military experiment designed to see what would happen when a nuke was detonated 250 miles above Earth’s magnetic pole. It resulted in an EMP 900 miles wide, an intense artificial aurora, and a radiation belt that disabled 1/3 of the low orbit satellites and lasted 5 years.
ANGRg
TIL About the “ever presents”. A group of runners that have completed every London marathon since its inception. Now down to only 6 people.
NeoE
TIL: The average age of menarche (first period in girls) declined from 17 to 13 in Europe from 1850 to 1960, and is well documented
ADeyB
TIL about Pain Asymbolia, a brain condition that results in people being able to feel, but not be bothered by, even extreme levels of pain.
PYEZw
TIL a French man was able to successfully impersonate an American family’s lost son for 3 and a half months before being caught and deported back to France.