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TIL that mathematician Marina Ratner proved her most influential theorem after she turned 50, defying a common notion that only young mathematicians can do great work

Read more www-history.mcs.st-and.ac.uk

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gJXy TIL that Charlie Chaplin had almost been assassinated by the assassins of Japanese Prime Minister Inukai Tsuyoshi, hoping to instigate a war with the USA. Chaplin, however, escaped this fate as he had gone with the prime minister’s son to a sumo wrestling match.
QJgD9 TIL it was Kevin Costner who suggested his co-star Whitney Houston record "I Will Always Love You" for the soundtrack to The Bodyguard starring Costner and Houston. Her efforts were rewarded with 2 Grammy Awards and 4 million copies sold in the United States alone.
xVQg7 TIL India has the highest number of mosques in the world - 300,000
kOyo4 TIL that while men only need 8mg of iron a day, women need about 18mg a day. This is to compensate for the amount of iron women lose during menstruation. About 1mg of iron is lost for each day of a women's period.
p8KGO TIL In the mid-1800's Italy installed several British built 100-ton, 450mm black powder cannons on it's newest warships and in response the British bought several from the same manufacturer to install on the island of Malta. None of the guns were never used in any conflict and only two exist today.