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TIL Teflon’s first use was in the Manhattan project.

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QR56 TIL even though Google’s self-driving cats have logged over 700,000 miles, they have yet to overcome the navigational hurdles of snow, heavy rain, open parking lots, multilevel parking garages, construction zones, and when the sun is directly behind a traffic light.
Z4bo TIL Denmark has a fat tax on butter, milk, cheese, pizza, meat, oil and processed food containing more than 2.3% saturated fat. The tax resulted in an additional $216 million in revenue.
8e0OG TIL that the Auschwitz "Arbeit macht frei" sign features an inverted "B" - Jan Liwacz, Konzentrationslager prisoner who made the sign, inverted the letter in defiance of Nazi oppression. Jan Liwacz survived Auschwitz and Mauthausen and died in 1980 a respected and well known artisan smith.
JYkM8 TIL in 2005 a Swedish ISP was sued by an anti-piracy group (supported by Paramount, EMI, and Sony) for copyright infringement. An internal investigation revealed that the incriminating material had been planted by insiders hired by the anti-piracy group. A deal was struck and the case was dropped.
ZJxa TIL Iceland has 137 prisoners, 4 of whom are women… Total.