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TIL the solution that finally solved the BP Oil Spill was originally suggested by James Cameron

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p8BJ8 TIL due to gravitational time dilation the core of the earth is approx. 2.5 years younger than surface. Higher gravitational potential causes time to move faster. For example, over the course of earth's history, a clock at the top of Mt. Everest would be approx. 39 hours fast than at sea level.
LkJWd TIL the British Royal Navy allows sailors to have facial hair, but only if they can grow a "sufficiently thorough beard" within 14 days.
19AV TIL, Canadians, by law, have to answer skill-testing questions if they are drawn as winner for a sweepstakes.
Y7xDB TIL that the National Hobo Memorial is a cemetery in Britt, Iowa, which includes the graves of several "hobo kings", and markers such as "Pony Horse", "Minneapolis Jewel", and "Shot Down" Wills.
OoLo6 TIL that author H. G. Wells was a pioneer in miniature wargaming. In 1913 he published Little Wars, a rulebook for playing out battles using toy soldiers.