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TIL the King of England once offered to convert England to Islam.

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VM5OG TIL Einstein’s theory of special relativity explains why a star can burn for billions of years without running out of fuel. If you can measure potential energy by multiplying mass by the speed of light squared, that means an average adult stores 30 large hydrogen bomb explosions worth of energy.
yQdZe TIL that you couldn't take a calculus classes when Harvard started because calculus hadn't been formally discovered yet.
ra4y TIL Five years ago, Billy Crystal signed a one day contract with the New York Yankees. His position: “Designated Hebrew”.
lve1 TIL that John Wilkes Booth’s brother, Edwin Booth, saved the life of Abraham Lincoln’s son, Robert Lincoln.
NaEb TIL A North Carolina town banned the use of solar panels because they thought it would “suck up all the energy from the sun”.