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TIL The major world leaders of WWI were all cousins. Kaiser Wilhelm of Germany, King George V of England, and Czar Nicholas II of Russia. Their grandmother was Queen Victoria.

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v1aAR TIL An $80M brand new shopping complex in Cleveland had to be almost completely abandoned because it was built on a land fill and methane was leaking into Walmart disturbing shoppers and the entire building started sinking. The EPA found methane was so high the parking lot could have exploded
0wvDp TIL: At the subatomic level, space is never truly empty. It is filled with a writhing, active population of "Virtual Particles" that pop in and out of existence. Physicists call this “quantum foam”. Physicists theorize fluctuations from this field of energy may have given rise to the Universe.
gMeVA TIL aquariums aren't allowed to pay to get animals from other aquariums as it encourages poaching. So there is a barter system in place where they swap animals. A New England aquarium traded a dozen penguins for 800 mackerel and their basic unit of trade is the jellyfish
E1Yb0 TIL that in 1856, a teacher strangled his student to death for killing his pet sparrow. The student's father shot and killed the teacher
oBE4Y TIL skateboarding started to appear in China after an American skateboarder traveled to Beijing to study Chinese in 1986. There wasn't a Chinese word for skateboarding at the time he arrived.