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TIL - The 'Blood Falls' in Antarctica is a bright red waterfall that flows from the Taylor Glacier into Lake Bonney. Despite its eerie appearance, the red color is actually caused by iron oxide, which gives the water its rust-like hue. The water is also extremely salty, preventing it being frozen

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M7QLm TIL the US didn’t have the $15m to pay France for Louisiana, so they financed it through a banks in London. Napoleon had made the deal with the US to fund his war against Great Britain and Europe. Britain allowed this deal to go through only because they didn’t want France to have their NA territory
9Y0wm TIL In 1936 BBC broadcasted television using a mechanical spinning disc transmitter and display with a peak resolution of 240 lines. The mechanical system did not scan the televised scene directly, instead a 17.5 mm film was shot, rapidly developed and then scanned while the film was still wet.
4XBeJ TIL: That "the fist of the sender," the personality of a morse code operator in WW2, could identify allies from enemies, their locations & troop movements, and more. The pace and style of their communication allowed expert operators to track them. This was the precursor to modern keystroke dynamics.
b6J0E TIL that Starbucks incurred massive losses and failed miserably trying to expand into Australia.
rR6Oy TIL of Canada's "Apology Act" to allow habitually apologetic Canadians to say "sorry" without implying any admission of fault or liability.