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TIL archeologists can determine the region of the world a skeleton is from by looking at the isotopes in the teeth.

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MnkA TIL Pornhub and Youporn will begin offering HTTPS encryption by default to fight against ISPs being able to sell your browsing history.
b94PZ TIL a Pantograph is the accordion-like apparatus on top of a train that draws current from the overhead wires. Its called that due to its resemblance to the other Pantograph, linked sticks which produce a duplicate copy of handwriting and artwork. The word itself means "All writing/drawing."
y4LV TIL Gordon Northcott, who molested and murdered several boys in the 1920s, and the movie The Changeling is based on, upon the day of his hanging asked, “Will it hurt?” To which the guards replied, “No one’s ever complained.”
XExoP TIL of Fordlandia, a suburban town built in the Amazon Rainforest by Henry Ford in 1928 with aims to control the rubber market.
gMkOW TIL about the Sorites Paradox, a paradox that arises from vague predicates. If you remove a grain of sand from a heap, it is still a heap of sand. When the process is repeated enough times: is a single remaining grain still a heap? If not, when did it change from a heap to a non-heap?