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TIL that Confederate symbolism can still be seen on the official state flags of Alabama, Arkansas, Florida, Georgia, Mississippi, North Carolina, and Tennesse.

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6EJ67 TIL the Tsar Bomba, the largest ever nuclear bomb detonated, was originally designed to yield 100 megatons. However, Sakharov was very apprehensive about the amount of radiation it would create, and therefore replaced the bombs innovative uranium layers with lead, halving the size of the blast.
Z0ao TIL to open the vaults at the Bank of England you need a key which is 3 feet long
ANg0g TIL that when you donate your body to science, it can get used as a crash test dummy, for medical training, forensic research or to save a life through organ transplants.
yAaX TIL That the original Price Is Right gave a contestant a real elephant as a gag prize, and planned later to give the winner $4,000 instead. The winner complained and demanded an elephant as promised. The show finally conceded and delivered it to the contestant’s home in Texas.
Egn6X TIL about the Kent State Massacre, where the National Guard opened fire on unarmed students at Kent State University. Students were staging a peace rally (though not all of those killed were involved in the rally). Soldiers fired 67 rounds in 13 seconds.