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TIL That Genghis Khan's Tomb Has Never Been Found, Because He Chose To Be Buried In Secret. That Doesn't Mean That People Have Given Up Though. The Latest Idea Is To Find It From Space.

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ANG67 TIL that a “Jiffy” is a real unit of time. Defined by Gilbert Lewis in 1926 as the time it takes light to travel 1cm (~33.3564 picoseconds), it has since been redefined in astrophysics & quantum physics by Edward Harrison as the time it takes for light to travel 1 fermi (or, 10^-15m: ~3×10^-24sec):
7rBbP TIL that Titanium is used in the food industry as a coloring/brightener and has many more applications like sun screen, wall paint, and so on. It is used in Marshmallows and Pastry Icing as well. No downsides or risks have been found yet.
awVJb TIL that during its last season, an episode of Friends cost as much to produce as an episode of Game of Throne (10 million dollars)
WkrE8 TIL that we eat plastics and it turns out we eat as much as a credit card in a week.
wLeNo TIL that months after Dr. Martin Luther King Jr. was assassinated, Fred Rodgers and Francois Clemmons worked together to show the word how to integrate swimming pools by soaking their feet in the pool together.