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TIL That while some citric acid is derived from lemon juice, the majority of citric acid commercially sold is extracted from a black mold called Aspergillus niger, which produces citric acid after it feeds on sugar

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dA1K TIL Billy Joel pursued a music career when he realized he wasn’t going to graduate high school at the end of his senior year. As he recounted, “If I’m not going to Columbia University, I’m going to Columbia Records, and you don’t need a high school diploma over there.” Columbia ended up signing him.
YNlx TIL Venting your anger online only makes you angrier, a study found
N7YO6 TIL To combat Exploding Casket Syndrome where some caskets literally explode due to buildup of methane gas manufacturers added "burpers" to their sealer caskets, gaskets that release — or "burp" out — accumulated gases as a preventative measure.
JZQ4 TIL that it costs $30,000 to get on the Hollywood Walk of Fame. A-Listers like Julia Roberts, Denzel Washington, Clint Eastwood, and Al Pacino don’t have a star because they didn’t pay.
Z8JP4 TIL Marie Skłodowska Curie changed the world not once but twice. She founded the new science of radioactivity – even the word was invented by her – and her discoveries launched effective cures for cancer. She is the 1st woman to win a Nobel Prize, and 1st person to win a second Nobel prize.