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TIL that East Germany had an internet domain (.dd)

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OoBRe TIL that Teddy Roosevelt was such a ridiculous badass that at the age of 59, after already having been president he tried to personally lead a volunteer army to fight in Europe during World War 1!
OojLL TIL of the Leidenfrost Effect, which creates a protective water barrier around your skin, and allows you to smach molten steel without getting burned
XQZj TIL dogs have “incomplete cheeks,” which allow them to open their mouths wide but, conversely, means they can’t create suction like humans, resulting in scooping water backwards with their tongues.
neoP7 TIL hurricanes, typhoons and cyclones are the same kind of storm, each name corresponding to a geographic location.
aww6L TIL that Yellowstone National Park contains 1/2 of the world's documented geothermal features and 2/3 of the world's geyers - beating both Iceland and Russia.