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TIL the cracks in the sidewalk are added to allow flexibility for thermal expansion

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GYdXj TIL Insurance companies invented the “Fire Brigade” it was only later the government saw the need for the service to be available to everyone that they created the government run Fire Department around the American Civil War era.
bXr4 TIL in 1960, Singapore’s birth rate was 5.4, so the government introduced a policy to stop parents from having more than 2 kids. The fertility rate dropped to 1.44, below replacement rates so the government reversed its policy. The fertility rate has never restored back to replacement levels since
oBZ5o TIL Vince Coleman, a railway dispatcher, sacrificed his life in order to warn an incoming train of an imminent explosion. His telegraph said "Hold up the train. Ammunition ship afire in harbor making for Pier 6 and will explode. Guess this will be my last message. Good-bye boys." He saved 300 lives.
nL4d TIL America’s largest mental hospital is a jail.
RnAa TIL, that ancient sloths were as big as rhinos. They were only exceeded in size by mammoths in other land mammals. There eventual extinction was due to human hunters.