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TIL that when dust jackets were first introduced, they completely enclosed the books and were sealed shut with wax or glue like wrapping paper. The most of these jackets were torn open and thrown away.

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rWXd TIL that almost all of the stadiums used in the Beijing Olympics in 2008 are huge concrete wastelands at the moment
Vdx8 TIL that during the filming of Eastern Promises, Viggo Mortensen’s Russian Mafia tattoos were so realistic that when he walked into a Russian Diner in London, everyone fell silent out of fear.
vP61r TIL that heroin is used routinely used in clinical practice in the UK and that this is something unique to the UK.
VMjPm TIL : When suitable environment conditions are given, the probability of an American nickel landing on edge is approximately 1 in 6000 tosses.
YpQPB TIL The "Kidney bean effect" or a flying shadow blocking parts of views while looking through binoculars is majorly related to improper eye relief. This happens when the eyes are not aligned perfectly with the eyepiece optical axis