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TIL the reason cows are considered too sacred to eat in India is because historically a cow was more valuable there as a source of milk, labor, and dung than it could ever be as meat, so it'd be dumb to eat them. Over time this turned into a cultural taboo.

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awN0N TIL the sailfish is considered by scientists to be the fastest swimming marine creature in the world, though not all experts agree. This fish has been clocked travelling in excess of 68 mph.
vWZ7 TIL of the “Tinker” supreme court case. In 1965 as a Vietnam War protest 3 kids wore black armbands to school. The school banned the armbands. They wore them again and were suspended. The “Tinker test” is used to see if a school’s disciplinary actions violate students’ 1st Amendment rights
b9VNj TIL Cats were often mascots on Navy ships in WWII. They kept the rodent population down and improved morale for the crew!
0dE7N TIL about the “Boy in the Box” mystery, where a young boy’s body was found in 1957 in Philadelphia, and despite numerous leads, the identity of both the boy and his killer remained unknown for over 60 years. The child was discovered wrapped in a blanket inside a cardboard box, but no missing persons
Oo8Ee TIL The US Department of Defense created a supercomputer using 1,760 PS3 consoles. Compared to other supercompuing systems at the time, it cost 90-95% less to build and required only one tenth of the power to operate