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TIL The Hubble Telescope is using Spermaceti (whale oil) to lubricate its parts due to whale oil's capacity to withstand extremely cold temperatures without coagulation.

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oZm7 TIL Hitler’s nephew wrote an article called “Why I Hate My Uncle.” He came to the U.S. and served in the navy
ADJZw TIL scientists attached stilts to the legs of ants to prove that they return to their nests by counting their steps. The regular ants walked right to the nest and went inside. The ants on stilts walked right past the nest and got lost. This was because of the change in length of the legs.
wooe6 TIL that the show "Between Two Ferns" is completely unscripted, despite what many people believe.
RKWa TIL that on March 5, 2004, there was a hockey game between the Philadelphia Flyers and Ottawa Senators where there was a total of 419 penalty minutes assessed.
kPyB TIL that until 1986 you didn’t even need to buy property in Alaska. You could build a house and it would have been yours…