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TIL the name of a trace fossil is called an ichnotaxon. Genera and species known from such fossils are called ichnogenera and ichnospecies respectively, like in Linnaen taxonomy

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oBbbL TIL James Murray Spangler (1848–1915), a salesman and janitor, invented the first commercially successful portable electric vacuum cleaner that revolutionized household carpet cleaning. His device was the first to use both a cloth filter bag and cleaning attachments. His invention was patented 1908.
gMGAy TIL the video game Plants vs. Zombies originally had a zombie that resembled Michael Jackson in the "Thriller" music video. After Jackson's death just two months after the game was released, the design was changed to a disco dancer after his estate complained.
QJvb6 TIL before the 1400s, people in Korea primarily wrote using Classical Chinese alongside phonetic writing systems based on Chinese script. Due to the difficulty in learning Chinese characters, King Sejong created the Korean alphabet, Hangul to promote literacy among the common people.
AMgB TIL Paul Rudd and Jon Hamm once played each other in a game of Trivial Pursuit for the affections of a girl
LA8Q TIL Pablo Neruda always wrote in green ink because he considered it the color of hope.