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TIL Michelangelo and Leonardo Da Vinci both lived in Rome at the same time and really disliked each other.

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4XwLo TIL William "Billy" Mitchell was an US army general who was an outspoken proponent of air power and its ability to defeat battleships. Due to his unrelenting criticism of high command's refusal to adapt, he was demoted and court martialed. Today he is regarded as the father of the US Air Force.
0w6vA TIL that aluminium in its purest form was so rare in the 19th century, it was more valuable than gold.
0wVVv TIL Most of our favorite chewing gum and bubble gum is made out of plastic.
rNWGM TIL men overestimate how fast they can run, and have an exaggerated idea of their physical fitness.
kOEn7 There's an extremely rare metallic asteroid lurking between Mars and Jupiter, and it's worth more than the entire global economy. Now, the Hubble Space Telescope has given us a closer look at the object, which is worth an estimated $10,000 quadrillion. — that's a one followed by 19 zeroes.