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TIL that around 6 million Polish citizens —nearly 21.4% of Poland's population at the time — died between 1939 and 1945 as a result of the German occupation of the country. It is estimated 90% of those deaths were non-military losses, i.e. murder.

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QNDbk TIL: There are "sniffer bees" that can be trained to sniff out various substances, including explosives, illegal drugs, and diseases in humans. Their sense of smell is so acute, they can match sniffer dogs in detection skills. However, each bee can only be trained to recognize one specific scent.
b9nya TIL that the reason mint feels cold is due to it containing menthol. Menthol activates the same receptor (TRPM8) that detects cold temperatures, so the brain will interpret it as something cold.
W7wV4 [TIL] Sack of Mecca is when the city of Mecca was raided during the Hajj by a claimant to the title Mahdi (Messiah like individual)
KYlgw TIL, In 2010, 80yr old María de Jesus suffered a heart attack and was pronounced dead at a LA morgue. Days later, morticians returned to pull her body for the funeral & found an unzipped bodybag and a corpse with bruises. It was determined that she tried to escape, broke her nose & froze to death
epOlL TIL a signed, typed letter (1983) from Steve Jobs, in which he wrote "I'm afraid I don't sign autographs", sold at auction for $478,939.