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TIL that the Eiffel Tower can be 15 cm taller during the summer, due to thermal expansion meaning the iron heats up, the particles gain kinetic energy and take up more space.

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wLRa7 TIL that at the age of 10, a boy named Alexander Bell asked his father if could have a middle name. As a result, on his 11th birthday, he became Alexander Graham Bell of telephone fame.
pYG4O TIL there’s a breed of cat called the Lykoi (Greek for “wolf”). They lack undercoats, the result of a naturally-occurring genetic mutation in feral cats, which along with sparse rear guard hair and a unique hair coloration makes them look like werewolves.
ppRG TIL the city of Surprise, Arizona was named by its founder who stated she “would be surprised if the town ever amounted to much.”
rN9No TIL that President Andrew Jackson bested Charles Dickinson in a duel after he had insulted his wife. He was shot first in the duel, but won, and the bullet could not be safely removed afterward for 40 years.
yQR6v TIL There is a star that seems to have exploded 6 times in the past 70 years.