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TIL that the first airline started in 1914, with scheduled service between Tampa and St. Petersburg, Florida. The flight took 23 minutes at a cruising altitude of 5 feet.

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mxdQp TIL that in 2015, Christopher Ingraham of Washington Post wrote an article about Red Lake County in Minnesota being "the absolute worst place to live in America." The unhappy county residents invited the reporter to come visit. He liked it so much, less than 1 year later he moved his family there.
Me5KA TIL that US submarine torpedos in WW II often failed to detonate due to faulty design of their firing pins. To correct the problem, Pearl Harbor workshops designed and mass produced new firing pins from the propeller blades of Japanese aircraft downed in the December 7, 1941 attack on Pearl Harbor.
VBWl0 TIL in the 1870s William Shanks spent 15 years of his life calculating pi to 707 places by hand. However, the last few years were wasted as he made a mistake after the 527th digit.
7rolp TIL that a cat named Pudding who got adopted saved the life of the woman who adopted Pudding that very night. Amy Jung experienced a seizure and Pudding went to Amy's son Ethan who followed Pudding back to his mom and found his mom having a seizure. Ethan called 911 and help soon arrived.
5VDd8 TIL you should never use hot water from your faucets for cooking or drinking. Hot water pulls minerals, metals (including lead), and other contaminants from boilers, hot water tanks and pipes. Stagnant hot water also provides a hospitable environment for harmful bacterial growth.