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TIL there's a mineral element (Promethium) so rare that it's estimated there are 500-600 grams of it in the Earth's crust

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e0JP5 TIL rock band Creedence Clearwater Revival played the 1969 Woodstock festival but refused to allow their performance to be included in the movie or on the soundtrack. The Greatful Dead had just finished a long mellow set so when CCR took the stage after midnight most of the audience was asleep.
Vpym TIL: US has worse financial inequality than Ukraine…
N7ALP TIL In 2016, a monkey fell on a transformer at a Kenya hydroelectric power plant, resulting in the loss of 180 megawatts of power which caused a nationwide blackout. The monkey survived and power was restored after four hours.
v1XKr TIL that when Daler Mehndi was criticized for using beautiful women to make his music popular, he made a video featuring only himself. It rose to become a hit in India and an internet meme.
rRv91 TIL The reason Roman structures survive so long is because they used volcanic ash in their concrete, which slowly transforms to aluminum tobermorite when exposed to sea water. Something modern scientists have been trying to do for decades.