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TIL Studies have concluded that all mammals get about a billion heartbeats per lifetime. They can use them at a rate of 1,000 per minute, like the shrew, or space them out into slow, ponderous beats, over many years, as is the case for the Grey whale.

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nWWe7 TIL in 1966, Dr Cyril Wecht was the first person to discover that President JFK's brain had gone missing from the National Archives after his official autopsy at Bethesda Naval Hospital, Maryland, 1963. The chief pathologist in Kennedy’s autopsy later admitted he destroyed autopsy notes.
6EJPW TIL about the fictional South American country of "Poyais," created by scam artist Gregor MacGregor in 1821. He invented a diverse economy, a government, a history, a bustling capital city, and even set up embassies in European cities. He made millions scamming investors and enthusiastic immigrants.
97x7 TIL Cincinnati was named after Roman dictator Lucius Quinctius Cincinnatus, who is cited as an example of outstanding leadership, service to the greater good, civic virtue, lack of personal ambition and modesty.
m1EbO TIL that, in its 105 years of operating, the "Diplomatic Courier Service", a special courier service operated by the USA that can only be used by diplomats, has lost just a single package - a baby grand piano, that was stolen at a Bulgarian railway station in 1919.
neLmY TIL that there is no absorbency difference between Always Ultra Thin pads and regular maxi pads, the latter is made thick so women can feel more “secure”