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A month before (or even earlier) a heart attack, your body may warn you with 8 crucial symptoms.

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OoexL TIL that in 1888 an Egyptian farmer found a mass grave of thousands of mummified cats. Over 180,000 of them were eventually shipped to Liverpool England and used as fertilizer.
69YRl TIL that during WW2, they experimented with running London buses on gas that's produced from burning coal. The gas was produced on a trailer that was towed by the buses.
m1OVM TIL That Adermatoglyphia is an extremely rare genetic disorder that prevents the development of fingerprints. Five extended families worldwide are known to be affected by this condition.
Y7Oax TIL that operating system Linux approximates informational anarchist communism
VBBD8 TIL the price of carbon fiber for aircraft construction dropped due to innovations driven by the B-2 program in the 1980s and Boeing 777 work in the 1990s