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TIL: in 1968, the US Navy proposed a 6,000 mile long underground antenna system that would have covered 40% of the state of Wisconsin. It needed 100 underground power plants and was supposed to survive nuclear attacks.

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ZpXyo TIL that cows have different accents, depending on which herd they come from.
WkDOB TIL following John F Kennedy's assassination, VP Lyndon B Johnson was to take the oath of office as president. Someone found a book with a cross on it on a side table in President Kennedy's cabin on Air Force One and assumed it was a bible. It was a missal, a book of Catholic mass texts and verses.
oBKxL TIL a general rule for plants is that lighter-coloured leaves require more light and darker-coloured leaves require less light. This is due to the amount of chlorophyll a and b found in the leaves.
R7GP1 TIL There are more skyscrapers in New York City than all of Europe combined. NYC has 290, Europe has 218.
PYPDG TIL that exercise does not actually contribute much to weight loss. Simply eating better has a significantly bigger impact, even without much exercise.