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TIL: In 2010 competitive swimming banned polyurethane suits in swimming that could reduce drag up to 8%, after records were broken in droves. The thin layer of fabric was made up of tiny bubbles that trapped air and actually made the swimmer float higher in the water.

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9Y7YX TIL that Black Sabbath and Led Zeppelin had an improvised jam session which was recorded but never released.
pxEA TIL Anne Frank wrote in her famous diary, “When I write I can shake off all my cares. My sorrow disappears, my spirits are revived! But, and that’s a big question, will I ever be able to write something great, will I ever become a journalist or a writer?”
AN6Lg TIL the British Library must store one copy of every single book published in the UK and Ireland. It houses over 200,000,000 publications, adds 6 miles (9.65 km) of new shelf space a year, and receives over 8000 new publications daily
PYPZE TIL a study was conducted involving separating infant twins through an adoption agency to study nature vs nurture . The twins involved in the experiment were never given knowledge of the study and the findings never published. The records are contained at Yale and will not be released until 2066.
9w1OB TIL Romans were known to create tombs for their dogs and gave them epitaphs to remember them by. One such inscription read, “I am in tears, while carrying you to your last resting place as much as I rejoiced when bringing you home with my own hands 15 years ago.”