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TIL it is a myth that bats use their echolocation to deftly maneuver around one another. High speed cameras show that bats crash into each other all the time.

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D48g TIL Woodie Guthrie said of This Land is Your Land “This song is Copyrighted in U.S… and anybody caught singin it without our permission, will be mighty good friends of ourn, cause we don’t give a dern. Publish it. Write it. Sing it. Swing to it. Yodel it. We wrote it, that’s all we wanted to do”
JY8d8 TIL It is only called an acronym when you pronounce the abbreviation as a real word (ex. NASA), otherwise it's known as an initialism (ex. FBI)
7rZNp TIL in the 1950s the US Government investigated a person named Robert Dorr because he kept writing to Boeing and asking for pictures of their planes. They discovered Dorr was a just teenager who loved planes, an "average and loyal American boy." He grew up to be a diplomat, author, and TV pundit.
9w856 TIL the Peregrine Falcon was saved from extinction when scientists invented copulation hats (commonly known as "fuck hats") to mimic female mating and later collect male semen
ppGN TIL: One of the first signs of a blood type mismatch in a transfusion is ‘a feeling of impending doom.’