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TIL that the original pledge of allegiance was written in 1892. It read: “I pledge allegiance to my Flag and the Republic for which it stands; one nation indivisible, with liberty and Justice for all.” Many phrases were added throughout the years, with the last phrase (“under God”) added in 1954.

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epa14 TIL Apollo 17 geologist astronaut Harrison Schmitt served in the U.S. Senate, becoming the only "natural scientist" in the Senate since Thomas Jefferson was Vice-President. Schmitt presently is Adjunct Professor of Engineering, University of Wisconsin-Madison, teaching "Resources from Space"
e0KVL TIL A man called Miyamoto Musashi is considered the greatest swordsman who ever lived and even defeated legendary swordsman Sasaki Kojiro. He arrived on the Island where they were due to fight, late, and with a wooden sword he'd carved out of an oar of the boat he used to get to the island.
YpZpW TIL that a Ha-Ha is a wall that is recessed into the ground in order to preserve an uninterrupted view of the landscape beyond. A Ha-Ha is used at the Washington Monument to reduce the visual impact of security measures following 9/11.
vP4Lx TIL that The Sound of Music’s original theatrical release lasted for 4 and a half years.
neMob TIL about Circular breathing, a technique used by players of some wind instruments to produce a continuous tone without interruption. This is accomplished by breathing in through the nose while simultaneously pushing air out through the mouth using air stored in the cheeks.