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TIL The Washington Monument’s many blocks are held together by just gravity and friction. No mortar was used in the building process.

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MenjV TIL that the speed record for a vehicle on rails is no less than 6,416 mph, or Mach 8.4, set by a rocket sled in 2003 at Holloman Air Force Base.
LkKNV TIL that the song "Bron-Y Aur Stomp" by Led Zeppelin was about Plant walking in the woods with his dog Strider.
BromD TIL The term 'Mahoska' from 'The Untouchables', misquoted as 'mahaska', originates from the Irish phrase 'My Business'.
dDVoZ TIL about the Anglo-Zanzibar War, which took place on August 27, 1896. It was just a thirty-eight minute war between the British Empire and the East African island nation of Zanzibar, making it the shortest war in history.
0wrNj TIL that Big Bird, from the American TV show Sesame Street, does not frequently appear in international versions of the show. Instead, he is replaced with other oversized birds that vary in color and size depending on which country they air in.