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TIL that Evolution of grass led to the evolution of humans
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VMdj4
TIL about the TKS Tankette. This WWII era tank was about the size and weight of a large pickup truck. The Polish Army reported heavy casualties due to its size and poor armor.
QJayL
TIL the Cave of Swallows in Mexico is the largest cave shaft in the world, being almost 1,000 feet wide at the bottom and 1,100 feet deep, and it's home of many birds, but despite its name, almost no swallows
56Qn
TIL a 3rd grade teacher ran an experiment with her class after the assassination of Martin Luther King where she got kids to discriminate against each other on the basis of eye color
0wyg5
TIL Diseconomies of scale are when businesses become less efficient as they get bigger. Reasons include the increased cost of communication between workers, office politics, and social loafing.
vwAj
TIL Joshua Norton declared himself emperor of the United States in 1859. He gained such popularity, that the currency he created was widely accepted in San Francisco.