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TIL about a 2021 discovery proving Italians knew about North America before Columbus's voyage

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VyQ0 TIL cracking your knuckle joints doesn’t give you arthritis. Dr Donald Unger cracked the knuckles on his left hand, twice a day for 50 years but not on his right hand. He proved his mother wrong and received the Ig Nobel Prize for his research
Rxk9 TIL there is the machine which consists of twelve pairs of worms and gears. The input gear makes 4 revolutions in a minute and the output gear thus makes 1 revolution in 2.3 trillion years and is embedded in a block of solid concrete. This machine represents time frames astrophysicist deal with.
b60Dp TIL that Seth Rogen's first ever movie role was in Donnie Darko.
J1N4m TIL comedian Ike Barinholz has won the 6th highest amount of game show winnings in America
xVAo0 TIL US has actually HSR running at max speed 240kmph, though its average speed is only 135kmph