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TIL The restoration of the Sistine Chapel’s ceiling was actually botched. They mistakenly removed carbon black on the ceiling which was assumed to be pollution but was actually used as tint - making the restored frescoes far brighter than they should be.

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5VMLR TIL about the RNA world hypothesis, according to which the many key roles of RNA in protein synthesis, such as the ribozyme nature of the peptidyl transferase activity of the ribosome, suggest that RNA evolved as an informational biopolymer before proteins and even before DNA.
M7D8a TIL, Rosa Luxemburg said her famous quote "remember, those who do not move, do not notice their chains" shortly before shot and killed by a German Nationalist. The man who planned the killing was Waldemar Pabst a fanatical nationalist officer whose paramilitaries became the rank and file for Nazism.
rxXW TIL that the founding fathers officially stated in the Treaty of Tripoli that “the Government of the United States of America is not, in any sense, founded on the Christian religion”.
1nAX TIL that Cary Grant was gay, deep in mutual love with one man for his adult life
1JRW TIL Pope Benedict IX was Pope three times, sold the papacy, was the first resignation, and had homosexual orgies in the Lateran palace