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TIL the Macadamia nut has the toughest shell of any nut in the world, requiring 300 pounds per square inch to crack.

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8a5a8 TIL that 19th century New York City was so lousy with oysters, they were typically sold for cheap from street carts for the working class. The remaining shells were then used as pavement for roads, crushed into mortar paste for construction, or burned for lime.
kJn6B TIL that prolific author Anne Perry was born Juliet Hulme, who with her best friend Pauline Parker murdered Parker’s mother in 1954
rNnBM TIL Papua New Guinea is the most linguistically diverse country in the world
jNXpN TIL that one of the first American spies was a women during the Revolutionary War. To this day, her identity is not known and is referred to only as Agent 355.
0wWYR TIL Leaf cutter ants learned to farm 50 million years ago, they bring back leaves to feed and grow a fungus that is their food source. They also poop and excrete chemicals around the fungus that protect it against pests.