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TIL in 1343, while laying siege to a Genoese outpost, a Mongolian army fell ill With plague. During withdrawal, they catapulted the diseased bodies into the city. The inhabitants then also fell ill, and the merchants in the city went on to spread the plague to Constantinople and ultimately Europe.

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BwjK TIL that crows pass the ‘marshmallow test’: they resist the temptation to eat a food if they know a tastier treat is coming later. This test of self-control is used to assess mental development in humans.
8aY8a TIL that Stephen Hawking hosted a party for time travelers, but no one came. he sent the invites out after the event with the thought that anyone who could time travel would go back and show up to the party
e0Ew6 TIL that Jewel, the singer who had hits such as "Who Will Save Your Soul", "Foolish Games", and Roy and Pam's song from the office, "You Were Meant For Me", started her career in a yodeling duet with her father, until she moved to Michigan to study opera.
695G7 TIL That the concrete used by the ancient romans has self healing properties, can last thousands of years and can make construction more environmentally sustainable
mPDO TIL that there’s a Russian “platypus”, the Desman is nearly blind, aquatic and looks like a cross between an anteater, a mole and a river rat.