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TIL In the 1930s, sequins were made of gelatin coated in lead paint, and could melt if they were touched or dissolved if wet.

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QlXk TIL: Unclaimed dead in NYC are buried in a mass grave on an island run by the Dept. of Corrections and staffed by convicts; Over 50,000 bodies are buried there and the press isn’t allowed to enter.
yVaKJ TIL that paying someone to do something they already enjoy can actually make them enjoy it less - a finding known as the overjustification effect (or motivation paradox).
VMmrp TIL that muon imaging could help save the Great Dome of Florence, and might solve the secret of how the heck Brunelleschi built it in the first place
kO0o4 TIL the letter C in latin is always pronounced as a K. Famous names like Caesar was actually pronounced Kaesar and worlds like Circus is pronounced Kirkos.
oB8yE TIL about APOPO - an organization that researches and trains rats to detect land mines and tuberculosis. These rats save lives!