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TIL that 'pigeons' are domesticated rock doves

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rNmGx TIL Geologists were able to determine the origin of the 9,300+ Japanese Incendiary bomb balloons launched against the US during WWII by analyzing the sand used in the ballast of the balloons
KJ8E TIL there’s a series of 70-foot-long concrete arrows that bisects the country longitudinally all the way from SF to NYC, all designed to direct aerial traffic. They are from the pre-digital age and were installed by the Federal government in 1924, coupled with light signals to guide the way.
4opw TIL that the founder of Israel, David Ben-Gurion, was an atheist.
nepwd TIL of the Diomede Islands, despite being separated by less than 4 Km, the time difference between them is of 21 hours. In winter the sea between them freezes and one can walk from "yesterday to tomorrow" or from "tomorrow to yesterday".
W7d0X TIL the US Government once released its own video game to inform, educate, and recruit prospective soldiers.